CN113496643A - Control simulation system of coiled tubing drilling power drill bit and use method thereof - Google Patents
Control simulation system of coiled tubing drilling power drill bit and use method thereof Download PDFInfo
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Abstract
本发明是连续油管钻井动力钻头的控制模拟系统及其使用方法，控制模拟系统主要设有地面控制装置、滚筒、连续油管悬挂机构和模拟井筒，模拟井筒为透明状，连续油管中穿有数据电缆，连续油管的前端与动力钻具连接、中部从连续油管悬挂机构的定滑轮中绕过，连续油管的后部排在滚筒中，连续油管由滚筒下入到模拟井筒中；数据电缆的后端与地面控制装置连接、前端从连续油管中穿过与动力钻具连接。启动地面控制装置，注意观察地面控制装置中的显示和钻头的运行轨迹，能够清楚地观察到地面控制装置对连接在连续油管下端的钻头的控制情况，可以将实际的钻头轨迹与地面控制装置的控制参数进行对比和验证，用于指导生产。
The invention relates to a control simulation system for a coiled tubing drilling power drill bit and a method for using the same. The control simulation system mainly includes a ground control device, a roller, a coiled tubing suspension mechanism and a simulated wellbore. The simulated wellbore is transparent, and the coiled tubing is threaded with a data cable. , the front end of the coiled tubing is connected with the power drilling tool, the middle part is bypassed from the fixed pulley of the coiled tubing suspension mechanism, the rear part of the coiled tubing is arranged in the drum, and the coiled tubing is run down from the drum into the simulated wellbore; the rear end of the data cable It is connected with the ground control device, and the front end is passed through the coiled tubing and connected with the power drilling tool. Start the ground control device, pay attention to observe the display in the ground control device and the running track of the drill bit, you can clearly observe the control of the drill bit connected to the lower end of the coiled tubing by the ground control device, and you can compare the actual drill bit trajectory with the ground control device. Control parameters are compared and validated to guide production.
Description
Technical Field
The invention relates to a monitoring system and a monitoring method for coiled tubing drilling in the petroleum industry, in particular to a control simulation system for a power drill bit for coiled tubing drilling and a using method thereof.
Background
Shallow drilling and old well side drilling by using coiled tubing equipment are an emerging petroleum drilling technology. The coiled tubing is thin in pipe diameter and can be coiled in a roller on the ground, the coiled tubing is put into a well through the roller, drilling mud of the coiled tubing passes through a mud joint in the roller, one end of the drilling mud is connected with the tail end of the coiled tubing, the other end of the drilling mud is connected with a mud pump, and the drilling mud forms circulation with a mud pool. Because the coiled tubing is thin in pipe diameter and easy to bend when being blocked, the coiled tubing is more obviously deformed particularly when drilling. However, the coiled tubing has the advantage of continuity that a single drill rod does not need to be replaced midway, so that the drilling speed is higher, the drilling period is short, and the drilling cost is greatly reduced. At present, the technology of shallow drilling and old well sidetracking by using coiled tubing in China is just started, some key technologies are still in an exploration phase, and particularly, a ground drilling control device or system of a coiled tubing drilling power drill bit is more key technical equipment for shallow drilling and sidetracking.
In the drilling footage construction, under the influence of different geological mud layers, rock stratum structures and the like in the ground, the drilling track of the coiled tubing is controlled on the ground, sometimes, a drill bit does not even drill a drilling target layer, sometimes, the actual drilling footage is much more than the budget, and in the cluster well group, the drilling target layer is drilled. In order to better understand the drilling trajectory of coiled tubing downhole, devices have been patented, such as: the coiled tubing drilling power bit control device and the method of using the same are filed with the application number 201910852694.4. Therefore, on one hand, a coiled tubing ground control device or system which is easier to control and master needs to be developed, and on the other hand, a simulation system which can be observed on the ground is equipped for the coiled tubing drilling power drill bit control device used in the well, and is used for evaluating whether the drilling track of the drill bit controlled by the coiled tubing ground control system and the coiled tubing drilling power drill bit control device drills according to a preset design track or not and judging the coincidence rate of the drilling track.
At present, no relevant research and report exists, namely how to simulate and verify the actual drilling position of a downhole drill bit controlled by a coiled tubing drilling ground control system and judge the drilling conforming condition or conforming rate with a preset design position, which cannot be realized at present.
At present, the general verification method is to monitor the drilling track in time by using the existing wireless while-drilling system technology in normal construction, and then adjust the drilling track in time through the observation of a simulation image. In the method of the above-mentioned type,
drilling mud is used as a medium to transmit through mud waves, and the transmission rate is very low, generally a few b/min and a few bytes per minute. After the instruction of the wireless ground control device while drilling is sent out, for the construction of a drill bit for high-speed drilling, the instruction cannot be transmitted in time, and the disorder change of a drilling track can be caused by serious delay. The construction is complicated, the drilling cost is increased, the construction period is prolonged, and other negative effects are caused.
In order to change the current situation that the drilling track of the drill bit controlled by the current coiled tubing ground control system and the coiled tubing drilling power drill bit control device cannot be determined to be consistent, a control simulation system of the coiled tubing drilling power drill bit needs to be developed so as to improve the current situation, improve the drilling quality of the coiled tubing and reduce the drilling cost.
Disclosure of Invention
The invention aims to provide a control simulation system of a coiled tubing drilling power drill bit and a use method thereof, which can test and check the control effect of a coiled tubing ground control device or system and visually observe whether the control direction of the coiled tubing power drill bit is consistent with a preset direction or not, so that the drilling level and quality of the coiled tubing are improved, the idle work is reduced, and the drilling cost is reduced.
In order to solve the problems, the invention is realized as follows:
the control simulation system of the coiled tubing drilling power drill bit is mainly provided with a ground control device, a roller, a coiled tubing suspension mechanism and a simulation shaft, wherein the simulation shaft is transparent, a data cable penetrates through the coiled tubing, the front end of the coiled tubing is connected with a power drilling tool, the middle part of the coiled tubing bypasses a fixed pulley of the coiled tubing suspension mechanism, the rear part of the coiled tubing is arranged in the roller, and the coiled tubing is lowered into the simulation shaft through the roller; the rear end of the data cable is connected with the ground control device, and the front end of the data cable penetrates through the coiled tubing to be connected with the power drill.
The simulated shaft comprises a transparent pipe, a sealing cover, a dog leg support and a horizontal support, the transparent pipe is connected according to the state of the actual shaft and then serves as a casing wall, the sealing cover and the bottom plug are respectively arranged at the upper end and the tail end of the transparent pipe, and the dog leg support and the horizontal support are respectively fixed at the turning point and the horizontal section of the transparent pipe; the sealing cover is provided with a continuous oil pipe through hole and a liquid inlet pipe inserting hole, a liquid outlet pipe is installed in the liquid inlet pipe inserting hole, and the continuous oil pipe can pass through the continuous oil pipe through hole.
The liquid outlet pipe is connected with the slurry tank through a liquid outlet pipeline and forms circulation with a slurry pump and a slurry joint in the roller through the slurry tank.
The dog leg support is an L-shaped support which is matched with the inflection point of the shaft of the simulated shaft, and the dog leg support and the horizontal support are both supported below the coiled tubing.
The coiled tubing suspension mechanism comprises fixed pulleys, a fixed pulley fixing plate and a fixed rod, wherein the number of the fixed pulleys is two, namely a fixed pulley I and a fixed pulley II, the fixed pulley I and the fixed pulley II are fixed below the fixed pulley fixing plate through pulley supports, and the coiled tubing is wound from the upper parts of the fixed pulley I and the fixed pulley II and then is put into the simulation shaft; the fixed pulley fixing plate is fixed below the hoisting fixing body through a fixing rod.
The power drilling tool comprises a screw drill and a drill bit, and a releasing joint, a directional tool and a measuring tool are further connected between the screw drill and the coiled tubing.
The total height of the simulated shaft is set between 5 meters and 10 meters, and the total length of the horizontal section of the simulated shaft is set between 5 meters and 10 meters.
The use method of the control simulation system of the coiled tubing drilling power drill bit comprises the following steps:
A. firstly, connecting a ground control device with a data cable in a coiled tubing;
B. the front end of the coiled tubing is output from the roller and passes over the fixed pulley I and the fixed pulley II;
C. mechanically connecting a coiled tubing with a releasing joint, connecting a data cable in the coiled tubing with a control cable in the releasing joint, and sequentially connecting the data cable with a directional tool, a measuring tool, a screw drill and a drill bit through the releasing joint;
D. operating a roller to lower a drill bit, a screw drill, an orientation tool, a measuring tool, a releasing joint and a coiled tubing into the simulated wellbore;
E. and starting the ground control device, adjusting the drilling direction and the direction of the drill bit, and paying attention to the display in the ground control device and the running track of the drill bit.
And comparing the running track, the adjusting direction and the position of the drill bit with the running track, the adjusting direction and the position of the drill bit displayed in the ground control device to obtain the difference between the running track, the adjusting direction and the position of the drill bit, and adjusting the control parameters in the ground control device according to the difference.
The invention has the following remarkable effects: in order to find out the control condition of the coiled tubing drilling power drill bit in the underground construction process, the invention manufactures a set of simulation system, a simulation shaft utilizes a transparent pipe as a casing wall, a ground control device is connected with a release joint and a power drill bit in the coiled tubing through a data cable, the ground control device is operated in an experimental place to simulate actual drilling construction, the control condition of the drill bit connected to the lower end of the coiled tubing by the ground control device can be clearly observed, and the actual drill bit track can be compared with the control parameters of the ground control device and verified.
The simulation system can design multi-angle and multi-azimuth drilling positions for the drill bit, timely compare the actual drilling position and the drilling track of the drill bit in the simulation system with track data displayed in a ground control device, monitor whether the drilling track of the ground control device and the drill bit actually controlled is consistent or not in real time, and identify the running error of the drill bit in actual drilling construction.
When the simulation test operation is carried out, according to the drilling simulation state, the implementation conditions of various working procedures of the coiled tubing in the drilling process can be observed in real time through the transparent simulation shaft according to the drilling simulation state, such as whether the releasing tool completes the releasing and the working state of the directional tool, and the like, and compared with the display in the ground control device, the error between the display in the ground control device and the actual construction is found out, so that the production can be guided, the drilling construction efficiency is improved, the reactive work is reduced, the production cost is reduced, and the method has remarkable economic benefit and social benefit, and good using effect and application value.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention and a state diagram of a simulation application in a vertical well.
Fig. 2 is a schematic structural diagram of the present invention and a state diagram of a simulation application in a horizontal well.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings, without limiting the scope of the invention, and all modifications made by the design idea of the present invention fall into the scope of the invention.
Referring to fig. 1 and 2, the control simulation system of the coiled tubing drilling power drill bit is mainly provided with a ground control device 1, a roller 3, a coiled tubing suspension mechanism and a simulation shaft 12, wherein the simulation shaft 12 is transparent, a data cable 2 penetrates through the coiled tubing 4, the front end of the coiled tubing 4 is connected with a power drill, the middle part of the coiled tubing 4 bypasses a fixed pulley of the coiled tubing suspension mechanism, the rear part of the coiled tubing 4 is arranged in the roller 3, and the coiled tubing 4 is lowered into the simulation shaft 12 through the roller 3; the rear end of the data cable 2 is connected with the ground control device 1, and the front end of the data cable passes through the coiled tubing 4 and is connected with the power drill.
The simulated shaft 12 comprises a transparent pipe, a sealing cover 11, a dog leg support 18 and a horizontal support 19, the transparent pipe is used as a casing wall after being connected according to the state of the actual shaft, the upper end and the tail end of the transparent pipe are respectively provided with the sealing cover 11 and a bottom plug, and the dog leg support 18 and the horizontal support 19 are respectively fixed at the inflection point and the horizontal section of the transparent pipe and used as supports of the continuous oil pipe 4 and the power drilling tool; the sealing cover 11 is provided with a coiled tubing passing hole and a liquid inlet pipe inserting hole, a liquid outlet pipe 10 is installed in the liquid inlet pipe inserting hole, and the coiled tubing 4 can pass through the coiled tubing passing hole.
The outlet pipe 10 is connected to a slurry tank via an outlet line and forms a circulation with the slurry pump and the slurry connections in the drum 3 via the slurry tank. The mud pump cycle can be started when it is desired to observe the actual application of the mud in the simulated wellbore 12.
The dog leg support 18 is an L-shaped support which is matched with the inflection point of the shaft of the simulated shaft 12, and both the dog leg support 18 and the horizontal support 19 are supported below the coiled tubing 4.
The coiled tubing suspension mechanism comprises two fixed pulleys, a fixed pulley fixing plate 6 and a fixed rod 7, the two fixed pulleys are respectively a first fixed pulley 5 and a second fixed pulley 9, the first fixed pulley 5 and the second fixed pulley 9 are fixed below the fixed pulley fixing plate 6 through pulley supports, and the coiled tubing 4 is wound from the upper part of the first fixed pulley 5 and the second fixed pulley 9 and then is put into the simulation shaft 12; the fixed pulley fixing plate 6 is fixed below the hoisting fixing body 8 through a fixing rod 7. The hoisting fixing body 8 can be a bearing object such as a beam, a roof, a fixing beam and the like which can bear the coiled tubing 4.
The power drill comprises a screw drill 16 and a drill bit 17, and a releasing sub 13, a directional tool 14 and a measuring tool 15 are connected between the screw drill 16 and the coiled tubing 4 so as to observe more applications of the downhole construction tool.
The total height of the simulated wellbore 12 is set between 5 meters and 10 meters, and the total length of the horizontal section of the simulated wellbore 12 is set between 5 meters and 10 meters.
The use method of the control simulation system of the coiled tubing drilling power drill bit comprises the following steps:
A. firstly, connecting a ground control device 1 with a data cable 2 in a coiled tubing 4;
B. the front end of the coiled tubing 4 is output from the roller 3 and passes through the upper parts of the fixed pulley I5 and the fixed pulley II 9;
C. mechanically connecting the coiled tubing 4 with the releasing joint 13, connecting the data cable 2 in the coiled tubing 4 with the control cable in the releasing joint 13, and sequentially connecting the data cable with the orienting tool 14, the measuring tool 15, the screw drill 16 and the drill bit 17 through the releasing joint 13;
D. operating the roller 3 to lower the drill bit 17, the screw drill 16, the directional tool 14, the measuring tool 15, the releasing sub 13 and the coiled tubing 4 into the simulated wellbore 12;
E. the surface control device 1 is activated to adjust the drilling direction and orientation of the drill bit 17, taking care to observe the display in the surface control device 1 and the trajectory of the drill bit 17.
Comparing the running track and the adjusting direction and the direction of the drill bit 17 with the running track and the adjusting direction and the direction of the drill bit 17 displayed in the ground control device 1 to obtain the difference between the running track and the adjusting direction and the direction, and adjusting the control parameters in the ground control device 1 according to the difference to achieve the best drilling control effect for guiding the site drilling construction.
The ground control device 1 in the system is a coiled tubing drilling ground control device with the application number of 202010142988.0, the name of the ground control device is a coiled tubing drilling ground control device, and software installed in the ground control device 1 is as follows: version number V1.0, registration serial number 2020R11L07345, name "coiled tubing drilling measurement and control system".
The simulation system can observe the working process and the actual situation of the drilling track of the coiled tubing 4, the downhole tool and the power drilling tool in the drilling process in real time, compare the working process and the actual situation with the track data displayed by the ground control device 1 in time, and monitor whether the drilling tracks of the ground control device 1 and the controlled drill bit 17 in the simulated shaft 12 are consistent or not in real time.
The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Many variations, combinations, and modifications of the aspects disclosed herein are possible and are within the scope of the invention, which is, therefore, not to be limited by the above description.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115691239A (en) * | 2022-11-14 | 2023-02-03 | 西南石油大学 | Multimedia system for tripping and tripping demonstration of oil and gas drilling |
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