CN119102563A - Dosing device and oil and gas production system - Google Patents

Abstract

The application relates to the technical field of oil and gas extraction, and provides a dosing device and an oil and gas extraction system. The medicine dispensing structure comprises a medicine dispensing end for temporarily storing and protecting medicine, and the medicine dispensing end is communicated with a sleeve annulus of the acquisition device. The circulation structure comprises an air inlet end and an air outlet end which are communicated, wherein the air inlet end is communicated with the annular space of the sleeve, the air outlet end is communicated with the medicine outlet end, and the circulation structure further comprises a driving assembly, and the driving assembly is in a first motion state and a second motion state. When the driving assembly is in the first motion state, gas in the annular space of the sleeve can be extracted, and when the driving assembly is in the second motion state, the extracted gas can be driven to flow back to the annular space of the sleeve through the gas outlet end and the medicine outlet end in sequence. Accidents such as natural gas leakage and the like are avoided, and the environment inside the casing annulus cannot be polluted.

Description

Chemical dosing device and oil and gas extraction system

Technical Field

The application relates to the technical field of oil and gas extraction, in particular to a dosing device and an oil and gas extraction system.

Background

With the development of oil fields entering the middle and later stages, chemical corrosion damage often occurs to the production and collection device of the oil and gas well. After the collection device is severely corroded, great potential safety hazards can be generated, and even the oil gas well cannot perform normal production operation. The annulus of the collection device is typically filled with a protective agent to protect the collection device from severe corrosion. The protective medicament contains chemical medicament components, the chemical components can be slowly consumed for a long time, so that the anti-corrosion effect of the protective medicament on the acquisition device is reduced, and the protective medicament is put into the acquisition device by using the administration device in the related technology in order to ensure the anti-corrosion effect of the acquisition device.

The chemical dosing device in the related art not only easily causes environmental pollution inside the collection device, but also easily causes leakage accidents of the collection device when the collection device is put in the protective chemical.

Disclosure of Invention

The application provides a dosing device and an oil and gas extraction system, wherein the dosing device can avoid the occurrence of natural gas leakage accidents when the dosing device doses drugs for a collecting device, and can also ensure the purity of the internal environment of the collecting device.

A first aspect of the present application provides an administration device for delivering a protective agent to a collection device having a cannula annulus for storing the protective agent, comprising:

the medicine dispensing structure comprises a medicine dispensing end for temporarily storing and protecting medicine, a sleeve ring space communicated with the collecting device, and

The circulating structure comprises an air inlet end and an air outlet end which are communicated, wherein the air inlet end is communicated with the annular space of the sleeve, the air outlet end is communicated with the medicine outlet end, and the circulating structure further comprises a driving assembly, and the driving assembly is provided with a first motion state and a second motion state;

when the driving assembly is in a first motion state, gas in the annular space of the sleeve can be extracted, and when the driving assembly is in a second motion state, the extracted gas can be driven to flow back to the annular space of the sleeve sequentially through the gas outlet end and the medicine outlet end, and the temporary storage protection medicament at the medicine outlet end is positioned on a path of gas flow.

When the administration device provided by the application is used for administration of the acquisition device, the driving assembly is started, the first movement state of the driving assembly is utilized to suck the gas in the annular space of the sleeve to the circulation structure, after enough gas is sucked, the driving assembly is changed to the second movement state of the driving assembly, at the moment, the driving assembly can drive the sucked gas to flow towards the medicine outlet end, the gas flows into the annular space of the sleeve again from the medicine outlet end, and the gas can drive the medicine at the medicine outlet end to move into the annular space of the sleeve when passing through the medicine outlet end. Therefore, the scheme of the application can throw the medicament in the administration structure into the casing annulus without externally introducing gas, so that the increase of the internal gas pressure of the casing annulus caused by externally introducing gas is avoided, and further, the accidents of damage of a collecting device, natural gas leakage and the like caused by the increase of the pressure are avoided.

In one possible implementation, the driving assembly includes a housing and a driving body having a first position and a second position relative to the housing, the driving body forming the first motion state relative to the housing during movement from the first position to the second position, the driving body forming the second motion state relative to the housing during movement from the second position to the first position.

In one possible implementation manner, the driving main body includes a driving rod movably connected to the housing, the driving rod is capable of moving between the first position and the second position, the housing has an air cavity, the air cavity is communicated with the air inlet end and the air outlet end, one end of the driving rod is located in the air cavity, and a peripheral wall of the end portion of the driving rod located in the air cavity is attached to an inner wall of the air cavity.

In one possible implementation manner, the end part of the driving rod, which is positioned at the air cavity, is provided with a pressing head, a sealing ring is arranged on the peripheral wall of the pressing head in a surrounding manner, and the sealing ring is attached to the inner wall of the air cavity.

In one possible implementation manner, the housing includes an outer cylinder, a containing groove is formed in the outer cylinder, the containing groove forms the air cavity, and the air inlet end and the air outlet end are both arranged in the outer cylinder.

In one possible implementation manner, the air cavity is provided with an opening at one end, the outer cylinder is further provided with a dust cap covering the opening end of the air cavity, and the driving rod penetrates through the dust cap.

In one possible implementation, the housing further includes a base plate, the base plate being connected to the outer barrel.

In one possible implementation manner, the air inlet end is provided with a first check valve, the first check valve limits the unidirectional flow of the gas in the sleeve annulus to the air inlet end, the air outlet end is provided with a second check valve, and the second check valve limits the unidirectional flow of the gas in the air outlet end to the medicine outlet end.

In one possible implementation manner, the administration structure includes a medicine storage box and an administration part, the administration part is connected to the medicine storage box, the medicine outlet end is arranged on the administration part, the administration part can be opened and closed, and when the administration part is opened, the protection medicine of the medicine storage box can fall to the medicine outlet end through the administration part.

In one possible implementation, the administration structure further includes a pressure equalization tube connected between the drug storage tank and the administration portion, a valve connected between the pressure equalization tube and the drug storage tank, and the pressure equalization tube and the sleeve annulus are in communication.

In one possible implementation, a vent pipe is provided between the sleeve annulus and the pressure balancing pipe, one end of the vent pipe is communicated with the sleeve annulus, and the other end of the vent pipe is communicated with the pressure balancing pipe.

In one possible implementation, a third check valve is connected to the vent pipe, and the vent pipe is communicated with the pressure balance pipe through the third check valve, so as to limit the gas in the casing annulus from flowing into the pressure balance pipe in a unidirectional manner.

In one possible implementation manner, the medicine outlet end is connected with a mixing tee, and the medicine outlet end is respectively communicated with the air outlet end and the sleeve annulus through the mixing tee.

In one possible implementation, the device further comprises a pipeline assembly, the pipeline assembly comprises a plurality of pipelines, the air inlet end is communicated with the sleeve annulus through part of pipelines, and the air outlet end is communicated with the medicine outlet end through the other part of pipelines.

In one possible implementation, the pipeline assembly includes a first gas pipe, one end of the first gas pipe is communicated with the gas inlet end, the other end of the first gas pipe is directly or indirectly communicated with the sleeve annulus, the pipeline assembly further includes a second gas pipe, one end of the second gas pipe is communicated with the gas outlet end, and the other end of the second gas pipe is communicated with the medicine outlet end.

The second aspect of the application provides an oil and gas extraction system, which comprises an acquisition device and the drug administration device.

In one possible implementation, the collection device includes an oil pipe and a sleeve, the sleeve is sleeved outside the oil pipe, and the sleeve and the oil pipe are arranged at intervals to form the sleeve annulus.

In one possible implementation manner, the collecting device further comprises a tube head, the tube head is connected with the sleeve and the oil tube, a feeding tube and an air outlet tube are arranged on the tube head, one end of the feeding tube can be communicated with the medicine outlet end, the other end of the feeding tube is communicated with the sleeve annulus, one end of the air outlet tube can be communicated with the air inlet end, and the other end of the air outlet tube is communicated with the sleeve annulus.

In one possible implementation manner, the feeding pipe is provided with at least one first gate for controlling the opening and closing of the feeding pipe, and the air outlet pipe is provided with at least one second gate for controlling the opening and closing of the air outlet pipe.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application. Other figures may be derived from these figures without inventive effort for a person of ordinary skill in the art.

FIG. 1 illustrates a schematic diagram of a collection device provided in some embodiments according to the application;

FIG. 2 illustrates a schematic diagram of a system for producing oil and gas provided in accordance with some embodiments of the present application;

FIG. 3 illustrates another structural schematic of an oil and gas recovery system provided in accordance with some embodiments of the present application;

FIG. 4 illustrates a cross-sectional view of a drive assembly provided in accordance with some embodiments of the application;

Fig. 5 illustrates a schematic of a medication administration structure provided in some embodiments according to the present application.

Reference numerals:

01-a medication administration device;

10-of a dosing structure, 110-of a medicine storage box, 120-of a valve, 130-of a pressure balance pipe and 140-of a third check valve;

150-of a medicine administration part, 151-of a medicine outlet end, 160-of a mixing tee joint, 170-of a medicine delivery pipe and 180-of a ventilation pipe;

20-circulation structure, 210-driving assembly, 211-housing, 2111-outer cylinder, 2112-air cavity, 2113-dust cap, 2114-base plate, 2115-inlet end, 2116-outlet end, 212-driving body, 2121-driving rod, 2122-handle, 2123-pressurizing head, 2124-tightening nut, 2125-sealing ring, 213-first check valve, 214-second check valve, 220-pipeline assembly, 221-first gas pipe, 222-first gas pipe

Three air delivery pipes, 223-pipeline tee joint, 224-second air delivery pipe;

02-a collection device;

30-sleeve, 40-oil pipe, 50-sleeve annulus, 60-tube head, 610-feed pipe, 620-outlet pipe, 630-first gate and 640-second gate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Oil gas exploitation means that substances such as fluid minerals, natural gas and the like buried underground are excavated out and applied to industrial production and daily life, and energy convenience is provided for people's life. The underground oil gas is lifted by using an artificial means through advanced technology, and finally converted into important energy through a filtering and separating process.

The application provides an oil and gas extraction system which can be used for oil and gas extraction of an oil and gas field, when the oil and gas field is prepared to be extracted after the oil and gas field is surveyed, drilling operation is needed to be carried out on the oil and gas field, and the underground operation can be carried out after the drilling is finished.

Specifically, fig. 1 is a schematic structural diagram of the collecting device according to the present application, and referring to fig. 1, it can be seen that the collecting device 02 includes an oil pipe 40 and a sleeve 30, and the sleeve 30 and the oil pipe 40 are hollow structures. In order to protect the casing 30 and the oil pipe 40, the casing 30 is sleeved outside the oil pipe 40, and the casing 30 and the oil pipe 40 are arranged at intervals, so that an annular space can be formed between the casing 30 and the oil pipe 40, and the annular space can form a casing annulus 50, namely a space for containing a protective agent, of the casing annulus 50. In use, the combined structure of the casing 30 and the oil pipe 40 is lowered into the well, the hollow structure of the oil pipe 40 can be used as a passage for oil and gas, and the oil and gas can be conveyed to the surface through the oil pipe 40.

It should be noted that, the collecting device 02 further includes a tube head 60, the tube head 60 is connected to the casing 30 and the oil tube 40, the tube head 60 can be used to fix the relative positions of the casing 30 and the oil tube 40, and the tube head 60 can seal the casing annulus 50.

Referring to fig. 1, in actual situations, the protection agent does not fill the casing annulus 50, i.e. a part of the upper surface of the casing annulus 50 is not filled with the protection agent, so as to cope with thermal expansion and contraction of the protection agent. The annular structure within the casing annulus 50 that is not filled with the protective agent will typically contain a quantity of natural gas and hydrogen sulfide, and the pressure of the portion of the casing annulus 50 that is not filled with the protective agent will be relatively high, typically greater than atmospheric pressure.

If the casing annulus 50 is filled with the protection agent, that is, there is no space in the casing annulus 50 for letting out the protection agent, when the temperature rises, the protection agent expands in the casing annulus 50, at this time, because there is no redundant expansion space in the casing annulus 50, the pressure in the casing annulus 50 increases, the protection agent can easily squeeze and deform the casing 30 and the oil pipe 40, and even force the pipe head 60 to separate from the casing 30 or the oil pipe 40, which not only results in damage to the whole collecting device 02, but also easily causes a natural gas leakage accident.

In the related art, a drug delivery pipeline of the drug delivery device is connected to the tube head 60 and is communicated with the sleeve annulus 50 through a drug delivery channel inside the tube head 60, so that in order to enable a drug in the drug delivery device to smoothly enter the sleeve annulus 50, the drug delivery device of the related art generally needs to be provided with a driving structure, the driving structure is mainly an air pump, an air outlet end of the air pump is communicated with a drug outlet end of the drug delivery device, air is sucked in an external environment through the air pump, then the air is conveyed to the air outlet end of the drug delivery device, and the drug at the drug outlet end can be conveyed into the sleeve annulus 50 under the action of flowing air and air pressure.

However, the administration method in the related art often needs to use external gas to deliver the medicament into the casing annulus 50, that is, to deliver the external gas into the casing annulus 50, so that the pressure inside the casing annulus 50 is increased, and the casing 30 or the oil pipe 40 is easily extruded and deformed, so as to damage the collecting device 02. In addition, if the external gas flows into the casing annulus 50 to cause the excessive pressure in the casing annulus 50 or the connection among the pipe head 60, the casing 30 and the oil pipe 40 is not firm, the pipe head 60, the casing 30 and the oil pipe 40 are easy to break away due to the action of the pressure, gaps are further generated, and the natural gas leakage accident in the casing annulus 50 is easy to occur.

The present application provides a medication device 01, which includes a medication structure 10 and a circulation structure 20, wherein the medication structure 10 is connected to a collection device 02, and in particular, a medication outlet 151 of the medication device 01 is in communication with a cannula annulus 50 of the collection device 02, such that a medication stored in the medication device 01 can enter the cannula annulus 50 through the medication outlet 151. In addition, a part of the circulation structure 20 of the present application can be connected to the cannula space 50, another part of the circulation structure can be connected to the administration structure 10, the circulation structure 20 can directly suck the gas in the cannula space 50, and the sucked gas can be delivered to the drug outlet end 151 of the administration structure 10, and returned to the cannula space 50 through the drug outlet end 151. In this way, the circulation structure 20 of the present application can deliver the medicament at the medicament outlet end 151 into the sleeve annulus 50 by driving the flow of the gas, and the gas required for delivering the medicament comes from the gas in the sleeve annulus 50, so that the gas does not need to be sucked from the outside, and the shortfall of the administration device 01 of the related art is avoided.

Specifically, referring to fig. 2 and 3, the present application further provides an administration device 01 capable of delivering a protective agent into a sleeve annulus 50 of a collection device 02, wherein the administration device 01 includes an administration structure 10 and a circulation structure 20, the administration structure 10 is used as a structure for providing the agent, and includes a drug outlet end 151 for temporarily storing the protective agent, and the drug outlet end 151 is communicated with the sleeve annulus 50 of the collection device 02. The administration structure 10 generally has a storage structure for storing the medicament therein prior to use, and when administration is desired, the medicament in the storage structure is released to the discharge end 151 for temporary storage and then delivered to the cannula annulus 50 by pushing action of the circulation structure 20.

The circulation structure 20 includes an inlet end 2115 and an outlet end 2116 in communication, the inlet end 2115 being in communication with the sleeve annulus 50 and the outlet end 2116 being in communication with the outlet end 151. The circulation structure 20 can be used to circulate gas within the casing annulus 50 between the circulation structure 20-administration structure 10-casing annulus 50.

It should be noted that, the tube head 60 is provided with a feeding tube 610 and an air outlet tube 620, one end of the feeding tube 610 is used for communicating the medicine outlet 151, the other end of the feeding tube 610 is communicated with the sleeve annulus 50, one end of the air outlet tube 620 is used for communicating the air inlet 2115, and the other end of the air outlet tube 620 is communicated with the sleeve annulus 50. This creates a gas circulation flow system between the casing annulus 50, the circulation structure 20 and the drug outlet end 151, allowing gas within the casing annulus 50 to circulate.

In order to ensure the tightness of the collecting device 02 during operation, at least one first gate 630 is disposed on the inlet pipe 610 to control the opening and closing of the inlet pipe 610, and at least one second gate 640 is disposed on the outlet pipe 620 to control the opening and closing of the outlet pipe 620.

The circulation structure 20 further includes a drive assembly 210, the drive assembly 210 being capable of driving a circulation of gas within the casing annulus 50. The driving assembly 210 specifically has a first motion state and a second motion state, when the driving assembly 210 is in the first motion state, gas in the casing annulus 50 can be extracted, when the driving assembly 210 is in the second motion state, the extracted gas can be driven to flow back to the casing annulus 50 through the gas outlet end 2116 and the medicine outlet end 151 in sequence, the protective medicament temporarily stored in the medicine outlet end 151 is located on a path of gas flow, and the protective medicament at the medicine outlet end 151 can be conveyed to the casing annulus 50 in the gas flow process.

The two states of motion of the drive assembly 210 primarily drive the gas within the casing annulus 50. It is contemplated that a first movement of the drive assembly 210 may effect drawing of gas from the cannula annulus 50 and drawing it into a portion of the circulation structure 20 for storage, and then a second movement of the drive assembly 210 may effect expelling of stored gas toward the administration structure 10 and flowing gas from the drug outlet end 151 back into the cannula annulus 50.

Therefore, when the medicine needs to be injected into the casing annulus 50, the driving assembly 210 needs to be started, the gas in the casing annulus 50 can be sucked into the circulation structure 20 by using the first movement state of the driving assembly 210, after enough gas is sucked, the driving assembly 210 is changed to the second movement state, at this time, the driving assembly 210 can drive the sucked gas to flow towards the medicine outlet end 151, the gas flows from the medicine outlet end 151 into the casing annulus 50 again, and the gas can drive the medicine in the medicine outlet end 151 to move into the casing annulus 50 when passing through the medicine outlet end 151. In this way, the scheme of the application can throw the medicament in the administration structure 10 into the sleeve annulus 50 without externally introducing gas, so that the gas pressure in the sleeve annulus 50 is prevented from being increased due to the externally introduced gas, and further, the accidents of damage to the acquisition device 02, natural gas leakage and the like caused by the increased pressure are avoided.

The driving component 210 mainly plays a role of driving the gas to flow, and the first movement state and the second movement state of the driving component are determined according to the specific structure of the driving component, so that the change of the pressure difference of the driving component 210 in the first movement state and the second movement state is mainly utilized to drive the gas to flow. For example, when the drive assembly 210 is in the first motion state, it is capable of changing the pressure inside the structure (i.e., the first gas line 221, hereinafter) in communication with the casing annulus 50 to a pressure less than the pressure inside the casing annulus 50, thereby enabling the gas inside the casing annulus 50 to flow to the circulation structure 20, and when the drive assembly 210 is in the second motion state, it is capable of enabling the pressure inside the structure (i.e., the second gas line 224, hereinafter) in communication with the drug outlet end 151 to be greater than the pressure inside the drug outlet end 151, thereby enabling the gas to be forced to flow to the drug outlet end 151 and from the drug outlet end 151 into the casing annulus 50.

In one embodiment, referring to fig. 2 and 3, the driving assembly 210 includes a housing 211 and a driving body 212, the driving body 212 has a first position and a second position relative to the housing 211, the driving body 212 moves from the first position to the second position relative to the housing 211 to form a first movement state of the driving assembly 210, and the driving body 212 moves from the second position to the first position relative to the housing 211 to form a second movement state of the driving assembly 210.

It should be noted that fig. 2 is a schematic diagram of a structure of an oil and gas production system according to some embodiments of the present application, fig. 3 is a schematic diagram of another structure of an oil and gas production system according to some embodiments of the present application, in the schematic diagram of fig. 2, the driving body 212 is located at a first position relative to the housing 211, and in the schematic diagram of fig. 3, the driving body 212 is located at a second position relative to the housing 211.

It is contemplated that the first movement state of the driving assembly 210 is that the driving body 212 moves from the first position to the second position along the direction Y to X, and the second movement state of the driving assembly 210 is that the driving body 212 moves from the second position to the first position along the direction X to Y.

In a preferred embodiment, referring to fig. 4, the driving body 212 includes a driving rod 2121 movably connected to the housing 211, the driving rod 2121 has a first position and a second position relative to the housing 211, the driving rod 2121 can move between the first position and the second position, and the driving rod 2121 can change the pressure when moving between the first position and the second position.

Specifically, the housing 211 further has an air chamber 2112, the air chamber 2112 being in communication with an air inlet end 2115 and an air outlet end 2116, the air inlet end 2115 and the air outlet end 2116 being disposed proximate to the same end of the air chamber 2112. One end of the driving rod 2121 is located within the air chamber 2112, and a peripheral wall of the end of the driving rod 2121 located at the air chamber 2112 is fitted to an inner wall of the air chamber 2112 so that a seal is formed between the end of the driving rod 2121 and the inner wall of the air chamber 2112. The first position is located where the air chamber 2112 is near the air inlet end 2115 and the air outlet end 2116, and the second position is located where the air chamber 2112 is far from the air inlet end 2115 and the air outlet end 2116.

The driving lever 2121 may be located at either the first position or the second position in the initial state. In the following description, taking the initial position of the driving rod 2121 as an example, when administration is required, the driving rod 2121 is driven from the first position to the second position, and because the peripheral wall of the end portion of the driving rod 2121 is attached to the inner wall of the air chamber 2112, a sealed space is formed between the end portion of the driving rod 2121 and the air chamber 2112, and the sealed space is communicated with the outside only through the air inlet end 2115 and the air outlet end 2116, and a suction force is generated by the movement of the driving rod 2121, so that the air in the annular space 50 of the sleeve can be sucked into the air chamber 2112. To avoid aspiration from the outlet port 2116, the outlet port 2116 needs to be closed during this process.

When the driving rod 2121 is in the second position, the gas outlet end 2116 is opened, the gas inlet end 2115 is closed, and then the driving rod 2121 is driven to move from the second position to the first position, at this time, the gas in the gas cavity 2112 flows out of the gas outlet end 2116 under the extrusion of the driving rod 2121, flows into the sleeve annulus 50 through the medicine outlet end 151, and administration is achieved.

By the relative movement of the drive rod 2121 within the air cavity 2112, the pressure within the air cavity 2112 can be varied, thereby effecting a pressure differential between the sleeve annulus 50 and the air cavity 2112, allowing the air within the sleeve annulus 50 to be drawn into the air cavity 2112, and allowing the air within the air cavity 2112 to be expelled from the air outlet end 2116. This structure is similar to the syringe structure in that the suction and exhaust functions are achieved by pushing and pulling the driving lever 2121.

In order to increase the tightness, a pressing head 2123 may be further disposed at the end portion of the driving rod 2121 located at the air cavity 2112, where the pressing head 2123 is preferably made of silica gel or plastic material, and the external dimension of the pressing head 2123 needs to be consistent with the cross section of the air cavity 2112, or the dimension of the pressing head 2123 is slightly larger than the cross section dimension of the air cavity 2112, so that the peripheral wall of the pressing head 2123 can be completely attached or can be tightly attached to the inner wall of the air cavity 2112, and the air tightness can be increased.

Or a circle of sealing ring 2125 can be arranged on the peripheral wall of the pressing head 2123 in a surrounding way, the sealing ring 2125 is convexly arranged on the outer wall of the pressing head 2123, and when the pressing head 2123 is positioned in the air cavity 2112, the sealing ring 2125 can be tightly attached to the inner wall of the air cavity 2112, so that the air tightness between the pressing head 2123 and the inner wall of the air cavity 2112 can be ensured.

In a specific embodiment, the housing 211 includes an outer cylinder 2111, and the outer cylinder 2111 is provided with a receiving groove along a linear direction, the receiving groove forms an air cavity 2112, and an air inlet end 2115 and an air outlet end 2116 are provided at one end of the outer cylinder 2111. The outer cylinder 2111 is used primarily to form the air chamber 2112 and to attach the drive rod 2121, the shape and size of which are not required.

The shape and size of the receiving groove for forming the air chamber 2112 are not limited, and the cross section thereof may be circular or rectangular, and in this embodiment, the cross section of the air chamber 2112 is preferably set to be circular.

The air chamber 2112 is provided away from the inlet end 2115 and the outlet end 2116 at one end opening from which the end of the drive rod 2121 can be inserted into the air chamber 2112. The outer cylinder 2111 is further provided with a dust cap 2113 covering the open end of the air chamber 2112, and the drive rod 2121 is provided through the dust cap 2113. The dust cap 2113 is provided to prevent foreign substances such as dust and bacteria from entering the air chamber 2112, so as to prevent contamination of the environment in the air chamber 2112.

To facilitate use of the circulation structure 20, the housing 211 is further provided with a bottom plate 2114, the bottom plate 2114 being connected to the outer cylinder 2111, and the bottom plate 2114 being located at an end of the outer cylinder 2111 remote from the opening of the air chamber 2112. The area of the end surface of the base plate 2114 facing away from the outer cylinder 2111 needs to be set reasonably so that the base plate 2114 can support and place the entire outer cylinder 2111 on the work platform. By providing the bottom plate 2114, the outer tube 2111 can be supported, and the outer tube 2111 can be stably placed on the work platform. Of course, in order to ensure stability, a structure for increasing strength such as a leg structure may be provided on the bottom plate 2114, and in order to ensure anti-slip performance of the bottom plate 2114, an anti-slip structure such as an anti-slip pattern or a structure having a large friction coefficient (rubber pad or the like) may be provided at the bottom of the bottom plate 2114.

In order to drive the driving rod 2121 more conveniently, a handle 2122 may be disposed on the driving rod 2121, the handle 2122 is located at an end of the driving rod 2121 away from the pressing head 2123, and the handle 2122 is detachably connected to the driving rod 2121. Specifically, a connection part (not shown in the figure) is disposed at one end of the driving rod 2121 far away from the pressing head 2123, the circumferential dimension of the connection part is smaller than that of the driving rod 2121, an external thread is disposed on the outer surface of the connection part, the handle 2122 can be sleeved at the connection part, the end of the connection part far away from the driving rod 2121 can be protruded out of the handle 2122, the end is in threaded connection with a tightening nut 2124, and the handle 2122 can be clamped between the driving rod 2121 and the tightening nut 2124 through the screwing of the tightening nut 2124, so that the handle 2122 is installed.

In order to save effort, an elastic member may be further disposed in the air cavity 2112, where the elastic member may be a spring, and the elastic member may be located between one end of the air cavity 2112 away from the opening thereof and the pressing head 2123 of the driving rod 2121, where the elastic member can enable the pressing head 2123 to be located at the second position in an initial state, when the driving rod 2121 is driven to move from the second position to the first position, the elastic member is pressed, and when the driving rod 2121 is released, the elastic member can force the pressing head 2123 to return to the second position from the first position, so as to implement an automatic return function of the driving rod 2121. In addition, the elastic member may be further sleeved on the driving rod 2121, and the elastic member is located between the pressing head 2123 and the dust cap 2113 at this time, where the elastic member may force the pressing head 2123 to be located at the first position in an initial state. The specific manner of arranging the elastic member is not limited herein, and may be determined according to actual situations.

It should be noted that the driving assembly 210 is not limited to the above structure, and the outer cylinder 2111 may be made of an elastic material, such as a memory metal, rubber, or plastic. The outer cylinder 2111 is provided with a sealed air cavity 2112, the air cavity 2112 is only communicated with the air inlet end 2115 and the air outlet end 2116, the outer cylinder 2111 can be extruded through a pressurizing action, and the outer cylinder 2111 is elastically deformed, so that the size of the inner space of the air cavity 2112 is changed, and the pressure difference is changed. For example, when the outer cylinder 2111 is pressed to reduce the internal space of the air cavity 2112, the air in the air cavity 2112 can flow out from the air outlet end 2116, and when the outer cylinder 2111 is released, the outer cylinder 2111 is restored by self elasticity, so that the internal space of the air cavity 2112 is restored, and the air in the sleeve annulus 50 can be sucked into the air cavity 2112 in the process to be discharged next time.

In addition, not only can the air cavity 2112 be reduced and restored by elastically arranging the outer cylinder 2111, but also the outer cylinder 2111 can be provided with two ends which can be arranged relatively movably, and an elastic member is arranged between the two ends, the elastic member can provide driving force for the two ends which are relatively movable, the volume of the air cavity 2112 can be reduced by the relative movement between the two movable ends when the sleeve is pressed, the two movable ends can be driven to move oppositely by the elastic force of the elastic member so as to restore the volume of the air cavity 2112, and the reduction and restoration of the volume of the air cavity 2112 can realize the flow of air in the annular space 50 of the driving sleeve.

In one embodiment, referring to FIG. 4, the gas outlet end 2116 is required to be closed while sucking the gas from the casing annulus 50, and the gas inlet end 2115 is required to be closed while exhausting the gas from the gas chamber 2112. In order to conveniently realize the sealing of the air inlet end 2115 and the air outlet end, a first check valve 213 is arranged on the air inlet end 2115, the first check valve 213 limits the gas unidirectional flow of the sleeve annulus 50 to the air inlet end 2115, a second check valve 214 is arranged on the air outlet end 2116, and the second check valve 214 limits the gas unidirectional flow of the air outlet end 2116 to the medicine outlet end 151.

By providing the first check valve 213, the second check valve 214 is in a closed state and the first check valve 213 is in an open state during movement of the drive rod 2121 from the first position to the second position to draw gas from the annular space 50 of the casing, such that only gas from the annular space 50 of the casing can be drawn into the gas chamber 2112, and the first check valve 213 is in a closed state and the second check valve 214 is in an open state such that only gas from the gas chamber 2112 can be drawn out of the gas outlet 2116 when the drive rod 2121 moves from the second position to the first position to draw gas from the gas chamber 2112.

In one embodiment, referring to fig. 1 and 5, the administration structure 10 includes a medicine storage tank 110 and an administration portion 150, where the medicine storage tank 110 has a medicine storage space, and the protection medicine can be stored in the medicine storage space of the medicine storage tank 110 in advance. In order to facilitate adding the protective agent in the medicine storage box 110, the medicine storage box 110 can be opened, and a dust cover is detachably connected to the opening position, so that the medicine can be added or replaced in the medicine storage box 110 by opening the dust cover.

The administration part 150 is connected to the medicine storage tank 110, the medicine outlet 151 is disposed at the administration part 150, and the administration part 150 can be opened and closed, for example, the administration part 150 can be configured as a valve structure, which has an open state and a closed state. When the administration part 150 is opened, the protective medicine in the medicine storage tank 110 can fall to the medicine outlet 151 through the administration part 150, and when the administration part 150 is closed, the medicine in the medicine storage tank 110 can freely fall to the medicine outlet 151 under the action of gravity. The administration unit 150 corresponds to a switch structure of the medicine tank 110, and can control the medicine in the medicine tank 110 to drop to the medicine outlet 151.

It should be noted that the collecting device 02 is not convenient to add the protecting agent during operation, so the protecting agent added to the casing annulus 50 at one time needs to be sufficient, if the amount is insufficient, the anti-corrosion effect is not ideal, and the collecting device 02 is likely to be corroded and damaged before the next time point of adding the protecting agent. Thus, it is desirable to accurately dose the protective agent in the drug reservoir 110, or to accurately dose the protective agent into the cannula annulus 50.

For example, it is possible to measure the amount of the protective agent added at a time in advance, then store the sufficient amount of the protective agent in the medicine storage tank 110, and then release and input all the protective agent in the medicine storage tank 110 into the sleeve annulus 50.

The drug outlet end 151 needs to be communicated with the drug outlet end 2116 and also needs to be communicated with the sleeve annulus 50, when the gas of the drug outlet end 2116 flows into the sleeve annulus 50 through the drug outlet end 151, the flow of the gas can increase the pressure of the inner space of the drug outlet end 151, so that the medicament in the drug outlet end 151 is not easy to flow into the sleeve annulus 50 along with the gas, and the medicament which can finally flow into the sleeve annulus 50 is easier to be smaller than expected.

To solve the above problem, in a preferred embodiment, the administration structure 10 further includes a pressure balance tube 130, wherein the pressure balance tube 130 is connected between the medicine storage tank 110 and the administration portion 150, and the medicine in the medicine storage tank 110 can fall freely into the pressure balance tube 130. A valve 120 is connected between the pressure balance pipe 130 and the medicine storage tank 110, and communication between the pressure balance pipe 130 and the medicine storage tank 110 can be realized by opening and closing the valve 120.

The pressure balance tube 130 communicates with the casing annulus 50, where the pressure within the pressure balance tube 130 balances the pressure within the casing annulus 50. When the driving rod 2121 is required to be driven to transport the medicament in the casing annulus 50, and the driving rod 2121 extrudes the gas in the gas cavity 2112 to flow out from the gas outlet end 2116, the gas flow is in an integral dynamic state, that is, not only the gas outlet end 2116 flows, but also the gas in the medicine outlet end 151 and the casing annulus 50 can flow under the pressure, and the gas in the casing annulus 50 can flow into the pressure balance tube 130 so as to ensure that the pressure in the pressure balance tube 130 is equal to the pressure in the casing annulus 50. The pressure balance tube 130 is further connected to the administration portion 150, so that when the administration portion 150 is in an open state and the administration end 151 is provided with the medicament, the air flow can be supplemented to the administration end 151, so that the pressure of the administration end 151 can be balanced with the pressure in the pressure balance tube 130, and the medicament at the administration end 151 can fall smoothly and flow into the sleeve annulus 50 along with the air.

Specifically, a vent pipe 180 is disposed between the casing annulus 50 and the pressure balance pipe 130, one end of the vent pipe 180 is connected to the casing annulus 50, the other end of the vent pipe 180 is connected to the pressure balance pipe 130, and gas in the casing annulus 50 can enter the pressure balance pipe 130 through the vent pipe 180.

It should be noted that, because the flow of the air depends on the movement of the driving rod 2121, the flow rate of the air generated during the process is easy to be unstable, and the opposite pressure is also unstable, in order to avoid the pressure instability in the pressure balance tube 130, the third check valve 140 is connected to the vent tube 180, and the vent tube 180 is connected to the pressure balance tube 130 through the third check valve 140, so as to limit the air in the sleeve annulus 50 from flowing into the pressure balance tube 130 in a unidirectional manner, and prevent the air in the pressure balance tube 130 from flowing backward. By providing the third check valve 140, the vent pipe 180 is communicated with the pressure balance pipe 130 by the third check valve 140, so that the air flow in the pressure balance pipe 130 cannot flow back into the casing annulus 50 through the vent pipe 180, and the pressure in the pressure balance pipe 130 is stabilized.

In order to facilitate the communication among the gas outlet end 2116, the medicine outlet end 151 and the sleeve annulus 50, a mixing tee 160 is connected to the medicine outlet end 151, and the medicine outlet end 151 is respectively communicated with the gas outlet end 2116 and the sleeve annulus 50 through the mixing tee 160. For example, the drug outlet 151 can be connected to one of the ports of the mixing tee 160, the gas outlet 2116 can be connected to one of the ports of the second gas pipe 224 appearing hereinafter, the other end of the second gas pipe 224 is connected to one of the remaining ports of the mixing tee 160, the feed pipe 610 of the collecting device 02 can be connected to one of the ports of the drug delivery pipe 170, and the other end of the drug delivery pipe 170 can be connected to the last port of the mixing tee 160.

In one embodiment, referring to fig. 1 and 2, in order to communicate the inlet end 2115 and the outlet end 2116 of the circulation structure 20 with the administration structure 10 and the casing annulus 50, the circulation structure 20 further includes a pipe assembly 220, wherein the pipe assembly 220 includes a plurality of pipes, a portion of the pipes is used to communicate the inlet end 2115 with the casing annulus 50, and another portion of the pipes is used to communicate the outlet end 2116 with the outlet end 151. The piping assembly 220 provides a flow path for the transportation of the gas so that the gas can smoothly circulate.

Specifically, the conduit assembly 220 includes a first gas delivery conduit 221, where one end of the first gas delivery conduit 221 is connected to the gas inlet 2115 and the other end is directly or indirectly connected to the sleeve annulus 50, and may be connected to the gas outlet conduit 620 of the collection device 02. The tubing assembly 220 further includes a second air delivery conduit 224, one end of the second air delivery conduit 224 being coupled to the outlet port 2116 and the other end being coupled to the outlet port 151.

The pressure balance pipe 130 is connected to the casing annulus 50 through the breather pipe 180, and the pipe assembly 220 further includes a third gas pipe 222 and a pipe tee 223 for simplifying the pipe, wherein one end of the third gas pipe 222 is connected to the casing annulus 50, and the other end is connected to one of the ports of the pipe tee 223. One end of the first air delivery pipe 221 is connected to the air inlet 2115, the other end is connected to the other port of the three-way pipe 223, one end of the air pipe 180 is connected to the pressure balance pipe 130, and the other end is connected to the last port of the three-way pipe 223.

It should be noted that the types of the feeding tube 610 and the air outlet tube 620 may be different from the types of the pipelines of the drug delivery tube 170 and the pipeline assembly 220, and at this time, the end portions of the feeding tube 610 and the air outlet tube 620 are provided with the adapter, so that the smooth connection between the feeding tube 610 and the drug delivery tube 170, between the air outlet tube 620 and the pipeline assembly 220 is realized through the adapter.

In summary, when the administration device 01 provided by the present application is administered by the collection device 02, the driving rod 2121 is driven to move in a direction away from the air inlet end 2115 to draw the air in the sleeve annulus 50 to the air chamber 2112, and in this process, the air in the sleeve annulus 50 sequentially passes through the third air pipe 222, the first air pipe 221, the first check valve 213 and the air inlet end 2115 to enter the air chamber 2112. Then, the driving rod 2121 is driven to move towards the direction close to the air inlet end 2115, under the extrusion of the pressing head 2123, the air in the air cavity 2112 can be discharged from the air outlet end 2116, and the air sequentially passes through the second check valve 214, the second air delivery pipe 224, the medicine outlet end 151 and the feeding pipe 610 to enter the casing annulus 50, so that one cycle of circulation of the air in the casing annulus 50 is realized. The medicament at the medicament outlet end 151 can be delivered into the sleeve annulus 50 during gas circulation.

When the medicine is administered, the valve 120 between the medicine storage tank 110 and the pressure balance tube 130 is opened, the medicine falls down to the pressure balance tube 130 under the action of its own weight, then the first gate 630 and the second gate 640 are opened, the air tightness of the pipes and the connection parts of the pipes are checked, after the medicine delivery tube 170 is separated from the adapter after no air leakage is determined, the driving rod 2121 is driven to reciprocate in the air cavity 2112, so that the gas in the annular space 50 of the casing can enter the interior of the circulation structure 20, the gas originally contained in the circulation structure 20 (the gas contained in the hose) can be driven to flow out from the medicine outlet end 151, the driving rod 2121 is driven in a circulation manner, the gas contained in the interior of the circulation structure 20 and the gas in the medicine outlet end 151 are replaced by the gas in the casing 50, the medicine delivery tube 170 is communicated to the adapter again after replacement is completed, and finally the medicine administration part 150 is driven to an open state, the medicine falls down to the medicine outlet end 151, and the medicine annular space 2121 is driven to be delivered into the casing 50.

Because there is a space in the casing annulus 50 and a certain amount of natural gas is present in the space, if the circulation structure 20 is connected to the casing annulus 50, the air in the circulation structure 20 itself can be mixed with the natural gas in the casing annulus 50 when the driving gas circulates, and an explosion accident can easily occur. Therefore, the above-described operation steps are required to exhaust the air in the circulation structure 20 before the administration of the medicine, and replace the air in the circulation structure 20 with the air in the sleeve annulus 50 to prevent an explosion accident.

In addition, after the administration is completed, the driving rod 2121 still needs to be driven to move so as to ensure that the gas in the sleeve annulus 50 continuously and circularly flows, and further ensure that the medicament at the medicament outlet end 151 can be completely transported into the sleeve annulus 50, so that the administration dosage is not influenced.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "comprises" and "comprising," and any variations thereof, as used in embodiments of the present application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly as being either permanently connected or removably connected or integrally formed, or as being directly connected or indirectly connected through an intervening medium such that two elements may be interconnected or in an interactive relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims (19)

1. An administration device for delivering a protective agent to a collection device having a cannula annulus for storing the protective agent, comprising:

the medicine dispensing structure comprises a medicine dispensing end for temporarily storing and protecting medicine, a sleeve ring space communicated with the collecting device, and

The circulating structure comprises an air inlet end and an air outlet end which are communicated, wherein the air inlet end is communicated with the annular space of the sleeve, the air outlet end is communicated with the medicine outlet end, and the circulating structure further comprises a driving assembly, and the driving assembly is provided with a first motion state and a second motion state;

when the driving assembly is in a first motion state, gas in the annular space of the sleeve can be extracted, and when the driving assembly is in a second motion state, the extracted gas can be driven to flow back to the annular space of the sleeve sequentially through the gas outlet end and the medicine outlet end, and the temporary storage protection medicament at the medicine outlet end is positioned on a path of gas flow.

2. The administration device of claim 1, wherein the drive assembly comprises a housing and a drive body having a first position and a second position relative to the housing, wherein movement of the drive body relative to the housing from the first position to the second position creates the first state of motion, and wherein movement of the drive body relative to the housing from the second position to the first position creates the second state of motion.

3. The administration device of claim 2, wherein the drive body comprises a drive rod movably connected to the housing, the drive rod being movable between the first position and the second position, the housing having an air chamber communicating with the air inlet end and the air outlet end, one end of the drive rod being located within the air chamber, and a peripheral wall of the end of the drive rod located within the air chamber being in abutment with an inner wall of the air chamber.

4. A medication dosing device as recited in claim 3, wherein a pressurizing head is provided at an end of the drive rod at the air chamber, a sealing ring is provided around a peripheral wall of the pressurizing head, and the sealing ring is attached to an inner wall of the air chamber.

5. A medication administration device as claimed in claim 3, wherein the housing comprises an outer barrel having a receiving groove formed therein, the receiving groove forming the air chamber, the air inlet end and the air outlet end both being disposed in the outer barrel.

6. The administration device as claimed in claim 5, wherein one end of the air chamber is opened, and the outer cylinder is further provided with a dust cap covering the opened end of the air chamber, and the driving rod is inserted through the dust cap.

7. The administration device of claim 5, wherein the housing further comprises a base plate, the base plate being connected to the outer barrel.

8. The medication dosing device of any one of claims 1-7, wherein a first check valve is disposed on the inlet end, the first check valve restricting unidirectional flow of gas from the sleeve annulus to the inlet end, and a second check valve is disposed on the outlet end, the second check valve restricting unidirectional flow of gas from the outlet end to the outlet end.

9. The medication dispensing apparatus of claim 1 wherein said medication dispensing structure comprises a medication storage tank and a medication dispensing portion, said medication dispensing portion being connected to said medication storage tank, said medication dispensing end being disposed at said medication dispensing portion, said medication dispensing portion being configured to be opened and closed, said medication storage tank being configured to hold a protective medication through said medication dispensing portion to said medication dispensing end when said medication dispensing portion is opened.

10. The administration set of claim 9, wherein the administration structure further comprises a pressure equalization tube connected between the drug storage tank and the administration portion, a valve connected between the pressure equalization tube and the drug storage tank, the pressure equalization tube in annular communication with the cannula.

11. The administration device as claimed in claim 10, wherein a vent tube is provided between the sleeve annulus and the pressure equalization tube, one end of the vent tube being in communication with the sleeve annulus and the other end of the vent tube being in communication with the pressure equalization tube.

12. The medication administration device of claim 11, wherein a third one-way valve is connected to the vent tube, the vent tube being in communication with the pressure equalization tube through the third one-way valve to restrict one-way flow of gas within the cannula annulus into the pressure equalization tube.

13. The medication dosing device of claim 9, wherein the medication outlet end is connected with a mixing tee, and the medication outlet end is respectively communicated with the medication outlet end and the sleeve annulus through the mixing tee.

14. The administration device of claim 1, further comprising a tubing assembly, wherein the tubing assembly comprises a plurality of tubing, wherein the inlet end is in communication with the sleeve annulus via a portion of the tubing, and wherein the outlet end is in communication with the outlet end via another portion of the tubing.

15. The administration device of claim 14, wherein the tubing assembly comprises a first air delivery conduit having one end in communication with the inlet end and another end in direct or indirect communication with the cannula annulus, and a second air delivery conduit having one end in communication with the outlet end and another end in communication with the outlet end.

16. An oil and gas recovery system comprising a collection device and an administration device according to any one of claims 1 to 15.

17. The oil and gas production system of claim 16 wherein the collection device comprises an oil tube and a sleeve, the sleeve is sleeved outside the oil tube and is spaced from the oil tube to form the sleeve annulus.

18. The oil and gas recovery system of claim 17, wherein the collection device further comprises a tube head connected to the sleeve and the oil tube, wherein a feed tube and an air outlet tube are arranged on the tube head, one end of the feed tube is capable of being communicated with the medicine outlet end, the other end of the feed tube is communicated with the sleeve annulus, one end of the air outlet tube is capable of being communicated with the air inlet end, and the other end of the air outlet tube is communicated with the sleeve annulus.

19. The oil and gas recovery system of claim 18, wherein at least one first gate is provided on the feed pipe for controlling the opening and closing of the feed pipe, and at least one second gate is provided on the outlet pipe for controlling the opening and closing of the outlet pipe.