CN113670180B - Oil-gas well casing distance measuring equipment and distance measuring method thereof - Google Patents

Abstract

The invention provides oil and gas well casing ranging equipment, which comprises: a nonmagnetic body; the electromagnetic distance measuring device comprises a non-magnetic extension short section, a power supply module, a power management module, a data acquisition module and a signal transmission module, and a plurality of electromagnetic distance measuring units, wherein each electromagnetic distance measuring unit comprises an electromagnetic distance measuring probe and a torque measuring assembly connected with the electromagnetic distance measuring probe, after the electromagnetic distance measuring probe is electrified, the adjacent oil-gas well casing tube enables the torque generated by the electromagnetic distance measuring probe, and the torque measuring assembly is used for measuring the torque. According to the scheme, the power supply module supplies power to the electromagnetic ranging probes at different positions, so that after the electromagnetic ranging probes are electrified, mutual attractive force is generated between the electromagnetic ranging probes and the adjacent oil-gas well casing, the torque measuring assembly measures the torque received by the electromagnetic ranging probes, and the relative positions of the adjacent wells can be calculated according to measured torque information.

Description

Oil and gas well casing ranging equipment and ranging method thereof

technical field

The invention relates to the field of oil and gas drilling, in particular to an oil and gas well casing ranging device and a ranging method thereof.

Background technique

Oil and other mineral resources buried underground are widely used in today's society. Due to the rapid development of society, a lot of resources need to be consumed, and some resources with shallow buried depth have been exploited in large quantities. In order to meet the growing energy demand, more and more buried resources have been exploited.

Due to the deep burial of resources, the drilling depth of oil and gas wells is also increasing, and some complex structure drilling requires the detection while drilling for the distance between adjacent oil and gas well casings. At present, there is no equipment that can directly and effectively detect the casing position of adjacent oil and gas wells.

Contents of the invention

The invention aims to provide an oil and gas well casing casing ranging device and a distance measuring method thereof, so as to solve the problem of detecting the casing casing adjacent to the oil and gas well.

The invention provides a casing ranging equipment for oil and gas wells, including:

non-magnetic body;

a non-magnetic extension short joint, the non-magnetic extension short joint is connected to the non-magnetic main body;

a power supply module installed on the non-magnetic extension joint;

respectively in the power management module, the data acquisition module and the signal transmission module connected to the power supply module;

N electromagnetic ranging units, each of which includes an electromagnetic ranging probe and a torque measurement component connected to the electromagnetic ranging probe, where N is an integer greater than 2;

A non-magnetic protective cover, the non-magnetic protective cover is installed outside the non-magnetic body;

The height or/azimuth of each electromagnetic ranging unit on the non-magnetic body is different;

Each of the torque measurement components is set in the non-magnetic body and connected with the power management module, the data acquisition module and the signal transmission module; after the electromagnetic ranging probe is powered on, the adjacent oil and gas well casing The tube makes the electromagnetic ranging probe generate torque, and the torque measurement component is used to measure the torque and send the measured torque information to the data acquisition module and the signal transmission module.

As a preferred technical solution, the electromagnetic ranging probes are equidistantly distributed in the circumferential direction of the non-magnetic body to form a detection group.

As a preferred technical solution, there are at least two detection groups.

As a preferred technical solution, the distance between two adjacent detection groups is not less than 3 meters.

As a preferred technical solution, the torque measurement assembly includes a torque transmission rod, a torque measurement rod, and a strain sensor, the torque measurement rod is fixedly installed in the non-magnetic body, and the strain sensor is connected to the torque measurement rod;

One end of the torque transmission rod is connected to the electromagnetic distance measuring probe, and the other end is connected to the torque measuring rod.

As a preferred technical solution, there are at least two non-magnetic extension short joints.

The present invention also provides a method for measuring the distance of an oil and gas well casing, including:

The power supply module supplies power to at least two electromagnetic ranging units in response to preset detection instructions;

Each torque measurement component obtains the torque information of each of the electromagnetic ranging probes, and sends each of the torque information to the data acquisition module and the signal transmission module;

The data collection module and the signal transmission module send the torque information to the processing module, and the processing module obtains the position information of the adjacent oil and gas well casing according to the torque information.

The power supply module of this solution supplies power to the electromagnetic ranging probes at different positions on the non-magnetic body according to the preset detection instructions. After the electromagnetic ranging probe is powered on, it will generate mutual attraction with the casing of the adjacent oil and gas well. The torque received by the electromagnetic ranging probe is different due to the different torques received by the electromagnetic ranging probe at different positions and different azimuth angles. The relative position of the adjacent well can be calculated according to the measured torque. The problem of position detection between adjacent wells is effectively solved, and the equipment has simple structure and low cost.

As a preferred technical solution, the power supply module supplies power to at least two electromagnetic ranging units in response to preset detection instructions, including:

The processing module receives a control instruction;

According to the control instruction, the processing module searches for a preset detection instruction corresponding to the control instruction in a preset instruction comparison table;

The processing module sends a preset detection instruction to the power management module;

The power management module controls the power supply module to supply power to at least two electromagnetic ranging units.

During the detection of adjacent wells, there are often different requirements for the detection of adjacent wells according to the actual situation, such as the depth of drilling, the type of drilling, etc. For common, deep wells, if a small number of electromagnetic distance measuring probes are used for measurement, or electromagnetic distance measuring probes with similar positions, the measurement results will occasionally deviate. Therefore, this scheme arranges the power supply sequence of multiple electromagnetic distance measuring probes to form a variety of preset detection instructions, and the operator can input control instructions according to the actual situation. These control commands and preset detection commands constitute a command comparison table, which is pre-stored in the processing module. The operator inputs the control command to the processing module, and the processing module can search for the corresponding preset detection command in the command comparison table according to the control command, and send The preset detection command is sent to the power management, data acquisition and signal transmission module, and the power management, data acquisition and signal transmission module controls and controls the power supply module to supply power to the electromagnetic distance measuring probe.

As a preferred technical solution, the preset detection instructions include a first power supply sequencing instruction, a second power supply sequencing instruction, and a third power supply sequencing instruction;

The first power supply sequencing instruction is to sequentially supply power to the electromagnetic ranging probes at the same azimuth angle along the axial direction of the non-magnetic body, from bottom to top;

The second power supply sequencing instruction is to sequentially supply power to the electromagnetic ranging probes in the same circumferential direction of the non-magnetic body;

The third power supply sequencing instruction is to simultaneously supply power to the electromagnetic distance measuring probes located in the same circumferential direction of the non-magnetic body.

In summary, due to the adoption of the above technical solution, the beneficial effect of the present invention is: through the power supply module, power is supplied to the electromagnetic ranging probes at different positions, so that after the electromagnetic ranging probe is powered on, there is mutual interaction with the casing of the adjacent well. Attractive force, torque measurement component measures the torque received by the electromagnetic distance measuring probe. Since the torque received by the electromagnetic distance measuring probe at different positions and different azimuth angles is different, the relative position of the adjacent well casing can be calculated according to the measured torque information. The problem of position detection between adjacent wells is effectively solved, and the equipment has simple structure and low cost.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be viewed The scope is limited, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a ranging device according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of a ranging device according to a first embodiment of the present invention;

FIG. 3 is a flow chart of a ranging method according to a second embodiment of the present invention.

Icons: 1-drill pipe, 2-non-magnetic extension joint, 3-non-magnetic body, 4-electromagnetic distance measuring probe. 5-compressor, 6-bending cylinder, 7-strain sensor, 8-torque measuring rod, 9-torque transmission rod.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

As shown in Figure 1 and Figure 2, this embodiment proposes a casing ranging device for oil and gas wells, including: drill pipe 1, non-magnetic body 3, non-magnetic extension joint 2, non-magnetic protective cover, power supply module, power supply Management module, data acquisition module and signal transmission module, multiple electromagnetic ranging units.

Wherein, each electromagnetic distance measuring unit includes an electromagnetic distance measuring probe 4 and a torque measuring component connected with the electromagnetic distance measuring probe 4 .

The non-magnetic protective cover is installed on the outside of the non-magnetic body, the non-magnetic extension joint is connected to the non-magnetic body, and the power supply module is installed on the non-magnetic extension joint 2; the power management module, the data acquisition module and the The signal transmission module is connected with the power supply module; the electromagnetic ranging probe 4 is exposed from the non-magnetic body 3, and a non-magnetic protective cover is arranged on the outside, and each electromagnetic ranging probe 4 is connected with the power supply module, each of the The height and/or azimuth of the electromagnetic ranging probe 4 on the non-magnetic body 3 are different; The transmission module is connected, after the electromagnetic distance measuring probe 4 is powered on, the adjacent oil and gas well casing causes the torque generated by the electromagnetic distance measuring probe 4, and the torque measurement component is used to measure the torque and send the measured torque information Send to the data acquisition module and signal transmission module.

In the above embodiment, the power supply module supplies power to the phase torque measurement component, and supplies power to the electromagnetic distance measuring probe 4 at different positions on the non-magnetic body 3. After the electromagnetic distance measuring probe 4 is powered on, it will generate mutual attraction with the adjacent oil and gas well casing. The force and torque measurement assembly can measure the torque that the electromagnetic distance measuring probe 4 is subjected to, and, due to the different heights of the electromagnetic distance measuring probe 4 on the non-magnetic body 3 and/or the azimuth angle between the electromagnetic distance measuring probe 4 and the adjacent oil and gas well casing The difference makes the electromagnetic ranging probe 4 experience different torques, and the relative position of the adjacent well can be calculated according to the measured torque information. The problem of position detection between adjacent wells is effectively solved, and the equipment has simple structure and low cost.

The aforementioned electromagnetic ranging probe 4 has different heights and/or azimuths on the non-magnetic body 3 , including but not limited to the following implementations.

In the first type, the electromagnetic ranging probes 4 are equidistantly distributed in the circumferential direction of the non-magnetic body 3 to form a detection group. The electromagnetic ranging probes 4 on the same circumference are located at the same height, but have different azimuth angles from the adjacent oil and gas well casings. The well casing produces different torques from which the relative position of the adjacent wells can be calculated.

The second type is that the electromagnetic ranging probes 4 are equidistantly distributed in the circumferential direction of the non-magnetic body 3 to form detection groups, and there are at least two detection groups, and three detection groups are common. Since some wells are not drilled vertically, it is necessary to consider whether the adjacent wells are parallel or not. In this embodiment, two or more detection groups are set. In this way, by measuring the torque of the electromagnetic ranging probe 4 in multiple detection groups, it is possible to analyze whether the adjacent oil and gas well casing is parallel to our drilling, or according to the current drilling trend, the distance between the two drilling These data can be used as a reference for technicians to carry out subsequent construction operations. In addition, preferably, the interval between the adjacent detection groups is not less than 3 meters. Because the magnetic field generated by the electromagnetic ranging probe 4 after power-on will cause certain interference between each other, in order to reduce this interference, a certain distance will be spaced between the detection groups. Through experimental calculation, the preferred interval is 3 meters and above. The interference generated by it belongs to the tolerable range for the measurement in this embodiment.

The third type is that the electromagnetic distance measuring probes 4 are distributed in a spiral form on the non-magnetic body 3 , and the adjacent electromagnetic distance measuring probes 4 are spaced at the same distance. The effect achieved by this distribution method is similar to that of the second distribution method, and will not be repeated here.

This embodiment also provides the implementation of the torque measurement assembly, which includes a torque transmission stem 9, a torque measurement rod 8, and a strain sensor 7, and the torque measurement rod 8 is fixedly installed in the non-magnetic body 3 , the strain sensor 7 is connected to the torque measuring rod 8; one end of the torque transmission stem 9 is connected to the electromagnetic distance measuring probe 4, and the other end is connected to the torque measuring rod 8.

In addition, it is worth mentioning that the non-magnetic body 3 includes a housing, a pressing piece 5 arranged in the housing, a bearing connected to the pressing piece 5, and a bending-resistant cylinder 6 connected to the bearing; The electromagnetic ranging probe 4 is installed on the bending-resistant cylinder 6. The non-magnetic main body 3 and the non-magnetic extension short joint 2 will not be magnetized and will not interfere with the magnetic field of the electromagnetic ranging probe 4 . Generally, the non-magnetic body 3 is relatively long, but the diameter of the non-magnetic body 3 is not large. In order to prevent the electromagnetic ranging probe 4 from being deformed under a large pulling force, the rigidity of the anti-bending cylinder 6 is relatively large; and the anti-bending cylinder 6 can rotate freely. , it is convenient to pass the torque to the torque measuring rod 8 through the torque transmission stem 9, the two ends of the torque measuring rod 8 are fixed and cannot rotate, and the strain of the torque measuring rod 8 is measured by the strain sensor 7.

Specifically, the electromagnetic distance measuring probe 4 is energized to generate a magnetic field, which attracts the adjacent bushings. If the direction is not directly opposite, the electromagnetic distance measuring probe 4 tends to rotate. The electromagnetic ranging probe 4 can freely rotate around the anti-bending cylinder 6 , and its force can act on the torque measuring rod 8 which is prone to elastic deformation through the torque transmission rod 9 . The torque measuring rod 8 cannot rotate, but it will produce strain when subjected to torsional force. What we need is the torque information when the torque measuring rod 8 is subjected to a torsional force. This torque information reflects the force of the electromagnetic distance measuring probe 4 .

Due to the high rigidity of the above-mentioned anti-bending cylinder, the force on the electromagnetic ranging probe 4 is not enough to deform it. When the electromagnetic ranging probe 4 is subjected to the axial component force (pull force), the anti-bending cylinder 6 is not deformed, and the length of the moment arm of the moment acting on the torque measuring rod 8 remains unchanged.

When the electromagnetic ranging probe 4 is subjected to the peripheral force (tangential rotation component), the rotatable anti-bending cylinder 6 does not hinder this force from acting on the torque measuring rod 8 through the torque transmission rod 9 .

As a preferred technical solution, there are at least two non-magnetic extension short joints 2 .

In summary, due to the adoption of the above technical solution, the beneficial effect of the present invention is: through the power supply module, power is supplied to the electromagnetic ranging probe 4 at different positions, so that after the electromagnetic ranging probe 4 is energized, there will be a collision with the casing of the adjacent well. Mutual attraction, the torque measurement component measures the torque received by the electromagnetic distance measuring probe 4, because the torque received by the electromagnetic distance measuring probe 4 at different positions and different azimuth angles is different, the relative position of the adjacent well can be calculated according to the measured torque information . The problem of position detection between adjacent wells is effectively solved, and the equipment has simple structure and low cost.

Embodiment two

As shown in Figure 3, this embodiment provides a method for measuring the distance of an oil and gas well casing, including:

Step S1, the power supply module supplies power to at least two electromagnetic ranging units in response to a preset detection command;

Wherein, step S1 is specifically:

The processing module in S101 receives a control instruction;

S102 According to the control instruction, the processing module searches for a preset detection instruction corresponding to the control instruction in a preset instruction comparison table;

S103, the processing module sends a preset detection instruction to the power management module;

S104 The power management module controls the power supply module to supply power to at least two electromagnetic ranging units.

During the detection of adjacent wells, there are often different requirements for the detection of adjacent wells according to the actual situation, such as the depth of drilling, the type of drilling, etc. For common, deep wells, if a small number of electromagnetic distance measuring probes are used for measurement, or electromagnetic distance measuring probes with similar positions, the measurement results will occasionally deviate. Therefore, this embodiment arranges the power supply sequence of multiple electromagnetic distance measuring probes, and forms a variety of preset detection instructions by sorting the power supply, and the operator can input control instructions according to the actual situation. These control instructions and preset detection instructions constitute an instruction comparison table, which is pre-stored in the processing module. The operator inputs the control command to the processing module, and the processing module can find the corresponding preset detection command in the command comparison table according to the control command, and send the preset detection command to the power management, data acquisition and signal transmission module, power management, The data acquisition and signal transmission module controls the power supply module to supply power to the electromagnetic ranging probe. After the electromagnetic ranging probe is powered on, it will generate mutual attraction with the adjacent bushing. The torque measurement component measures the torque received by the electromagnetic ranging probe, and the torque information is collected through data. The module and the transmission module are transmitted to the processing module, and the processing module can calculate the relative distance of the casing under test according to the obtained torque information. The calculation method of the relative distance is an existing technology. Simply speaking, the experimental device is designed through the laboratory. The permanent magnet in the device represents the electromagnetic ranging probe. By changing the angle or position of the permanent magnet and the metal casing, the rotational torque of the permanent magnet is measured to obtain a large amount of data. Based on these data, the formula of the ranging model is constructed, which will not be presented here repeat.

Step S2, each torque measurement component obtains the torque information of each of the electromagnetic ranging probes, and sends each of the torque information to the data acquisition module and the signal transmission module;

Step S3, the data collection module and the signal transmission module send the torque information to the processing module, and the processing module obtains the position information of the adjacent oil and gas well casing according to the torque information.

It should be noted that there are multiple implementation manners for the preset detection instruction mentioned above, but the preset detection instruction includes but is not limited to the following implementation manners.

Specifically, the preset detection instructions include a first power supply sequencing instruction, a second power supply sequencing instruction, and a third power supply sequencing instruction;

The first power supply sequencing instruction is to sequentially supply power to the electromagnetic ranging probes at the same azimuth angle along the axial direction of the non-magnetic body, from bottom to top;

The second power supply sequencing instruction is to sequentially supply power to the electromagnetic ranging probes in the same circumferential direction of the non-magnetic body;

The third power supply sequencing instruction is to simultaneously supply power to the electromagnetic distance measuring probes located in the same circumferential direction of the non-magnetic body.

The first power supply sequence command and the second power supply sequence command supply power to and measure only one electromagnetic distance measuring probe at a time, which has the advantage of avoiding the influence of electromagnetic interference between electromagnetic distance measuring probes. Although the third power supply ordering command is to supply power to multiple electromagnetic ranging probes at the same time, since these electromagnetic ranging probes are on the same circumference, and most of them are equidistant and symmetrically distributed, the electromagnetic interference between them can cancel each other out , the impact on the detection of adjacent wells is negligible.

In addition, it is worth mentioning that the control instructions include a first execution instruction, a second execution instruction, and a third execution instruction;

The first execution instruction is that the processing module sends a preset detection instruction to the power supply module;

The second execution instruction is that the processing module sequentially sends at least two different preset detection instructions to the power supply module;

The third execution instruction is that the processing module sequentially sends all preset detection instructions to the power supply module.

The operator can select the appropriate control command according to the specific situation to meet the actual drilling needs, especially when the drilling is deep and the drilling structure is complex, the second execution command and the third execution command can make the measurement results more accurate. The first execution command is more suitable for simple adjacent well detection, which can take into account the time efficiency, because the detection environment is underground, and the transmission of signal data is limited. The detection data of the first execution command is relatively small, which is convenient for transmission.

In summary, the power supply module of this embodiment supplies power to the electromagnetic ranging probes at different positions according to the preset detection instructions. After the electromagnetic ranging probe is powered on, it will generate mutual attraction with the casing of the adjacent well. Measure the torque of the electromagnetic ranging probe. Since the torque of the electromagnetic ranging probe at different positions and different azimuths is different, the processing module can calculate the position information of the adjacent well according to the measured torque. The problem of position detection between adjacent wells is effectively solved, and the equipment has simple structure and low cost.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. An oil and gas well casing ranging apparatus, comprising:

a nonmagnetic body;

the non-magnetic extension short section is connected with the non-magnetic body;

the power supply module is arranged on the nonmagnetic extension short section;

the power management module, the data acquisition module and the signal transmission module are respectively connected with the power supply module;

each electromagnetic ranging unit comprises an electromagnetic ranging probe and a torque measuring assembly connected with the electromagnetic ranging probe, and N is an integer greater than 2;

the nonmagnetic protective cover is arranged on the outer side of the nonmagnetic body;

the electromagnetic ranging units are arranged on the nonmagnetic body and have different heights or/and azimuth angles;

each torque measuring assembly is arranged in the non-magnetic body and is connected with the power management module, the data acquisition module and the signal transmission module;

each electromagnetic ranging probe is connected with the torque measuring assembly;

after the electromagnetic ranging probe is electrified, the electromagnetic ranging probe generates torque adjacent to the oil-gas well sleeve, and the torque measuring assembly is used for measuring the torque and sending measured torque information to the data acquisition module and the signal transmission module.

2. The oil and gas well casing ranging apparatus of claim 1, wherein the electromagnetic ranging probes are equally distributed in a circumferential direction of the nonmagnetic body to form a probe group.

3. The oil and gas well casing ranging apparatus of claim 2, wherein there are at least two of said detection groups.

4. A hydrocarbon well casing ranging apparatus as claimed in claim 3, wherein the spacing between adjacent ones of said detection groups is not less than 3 meters.

5. The oil and gas well casing ranging apparatus of claim 1, wherein the torque measurement assembly comprises a torque transmission rod, a torque measurement rod fixedly mounted in the nonmagnetic body, and a strain sensor connected with the torque measurement rod;

one end of the torque transmission rod is connected with the electromagnetic distance measurement probe, and the other end of the torque transmission rod is connected with the torque measurement rod.

6. The oil and gas well casing ranging apparatus of claim 1, wherein at least one of the non-magnetic extension sub is provided.

7. An oil and gas well casing ranging method, comprising:

the power supply module is used for responding to a preset detection instruction and supplying power to at least two electromagnetic ranging units;

each torque measurement assembly respectively acquires torque information of each electromagnetic ranging probe and sends the torque information to the data acquisition module and the signal transmission module;

the data acquisition module and the signal transmission module send the torque information to a processing module, and the processing module acquires the position information of the adjacent oil-gas well casing according to each piece of torque information;

the preset detection instruction comprises a first power supply sequencing instruction, a second power supply sequencing instruction and a third power supply sequencing instruction;

the first power supply sequencing instruction is used for sequentially supplying power to the electromagnetic ranging probes at the same azimuth angle from bottom to top along the axial direction of the non-magnetic body;

the second power supply sequencing instruction is to sequentially supply power to the electromagnetic ranging probes positioned on the same circumference direction of the non-magnetic body;

and the third power supply sequencing instruction is to simultaneously supply power to the electromagnetic ranging probes positioned on the same circumference direction of the non-magnetic body.

8. The oil and gas well casing ranging method of claim 7, wherein the power module, in response to a preset detection command, powers at least two electromagnetic ranging units, comprising:

the processing module receives a control instruction;

according to the control instruction, the processing module searches a preset detection instruction corresponding to the control instruction in a preset instruction comparison table;

the processing module sends a preset detection instruction to the power management module;

the power management module controls the power supply module to supply power to at least two electromagnetic ranging units.

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