Magnetic positioning system signal line oil pipe tool

Abstract

This invention relates to the field of auxiliary tools for heavy oil reservoir development, specifically a signal line insertion tool for a magnetic positioning system. The tool includes a fixed sleeve, an outer cylinder, a guide head, a locking mechanism, and a launching rod. The fixed sleeve is T-shaped, with its narrow-diameter section fixedly mounted to the inner upper part of the outer cylinder. A limiting annular groove is provided along the outer bottom edge of the wide-diameter section of the fixed sleeve. The lower end of the launching rod extends into the outer cylinder from the fixed sleeve, with its outer diameter smaller than the inner diameter of the fixed sleeve. The guide head is located inside the outer cylinder below the fixed sleeve, with its outer diameter smaller than the inner diameter of the outer cylinder. The lower part of the launching rod is fixedly connected to the upper part of the guide head. This invention, combining the guide head, energy storage ejection mechanism, and launching rod, effectively improves the efficiency of signal line insertion into oil pipes during magnetic positioning system measurement operations, reduces auxiliary time, and allows for cleaning of debris inside the oil pipe, effectively protecting the signal line.

Description

Technical Field

[0001] This invention relates to the field of auxiliary tools for heavy oil reservoir development, and is a magnetic positioning system signal line insertion tool for oil pipes. Background Technology

[0002] Steam-assisted gravity drainage (SAGD) is currently the most efficient technology for heavy oil extraction. The mechanism involves drilling a pair of parallel horizontal wells in the reservoir. Steam is injected into the upper steam injection well, rising upwards and overlapping the formation to form a steam chamber. This steam chamber expands upwards and laterally, exchanging heat with the crude oil in the reservoir. The heated crude oil and steam condensate are then discharged into the lower production well by gravity. SAGD can increase the recovery rate to approximately 60%, which is 30% higher than conventional horizontal well steam injection. A magnetic positioning system is a key tool in SAGD. When using this tool, the signal line needs to be threaded through the tubing. Currently, both domestic and international tools use wire traction for this method. However, after use, heavy oil and mud cake accumulate on the inner wall of the tubing, making it more difficult to thread the wire, increasing auxiliary time and reducing operational efficiency. Meanwhile, the presence of sharp objects such as rock fragments and mud cakes may damage the signal lines during the signal line installation process. Summary of the Invention

[0003] This invention provides a tool for threading signal lines through oil pipes in a magnetic positioning system, which overcomes the shortcomings of the prior art and effectively solves the problems of easy damage to signal lines, slow threading speed, and difficulty in threading through oil pipes in existing magnetic positioning system signal line threading methods.

[0004] The technical solution of this invention is achieved through the following measures: a magnetic positioning system signal line oil pipe threading tool, comprising a fixed sleeve, an outer cylinder, a guide head, a locking mechanism, and a launching rod. The fixed sleeve is T-shaped, with the outer side of the narrow diameter section of the fixed sleeve fixedly installed with the inner side of the upper end of the outer cylinder. A limiting ring groove is provided on the outer edge of the bottom of the wide diameter section of the fixed sleeve. The lower end of the launching rod extends into the outer cylinder from the fixed sleeve, and the outer diameter of the launching rod is smaller than the inner diameter of the fixed sleeve. The guide head is located in the outer cylinder below the fixed sleeve, and the outer diameter of the guide head is smaller than the inner diameter of the outer cylinder. The lower part of the launching rod is fixedly connected to the upper part of the guide head. An energy storage ejection mechanism located in the outer cylinder is fixedly connected between the fixed sleeve and the guide head on the outer side of the launching rod. A locking mechanism that can lock the energy storage ejection mechanism in an unejected state is fixedly installed on the launching rod. A locking mechanism with a maximum longitudinal cross-sectional width smaller than the maximum longitudinal cross-sectional width of the guide head is fixedly connected to the lower end of the guide head. A signal line passing channel from top to bottom is formed inside the launching rod, the guide head, and the locking mechanism.

[0005] The following are further optimizations and / or improvements to the above-mentioned technical solution:

[0006] The aforementioned energy storage ejection mechanism uses a compression spring; the locking mechanism uses a locking pin, and a locking groove is provided radially on the outer side of the launch rod when the corresponding energy storage ejection mechanism reaches its maximum compression state, with one end of the locking pin fixedly installed in the locking groove.

[0007] The upper outer side of the aforementioned launch rod is provided with a limiting ring platform whose maximum longitudinal cross-sectional width is greater than the inner diameter of the fixed sleeve.

[0008] The outer wall of the aforementioned seeker head is provided with a guide groove running from top to bottom. A guide platform matching the guide groove is provided on the inner wall of the outer cylinder. The guide platform is located inside the guide groove. A first vertical elongated hole communicating with the interior of the seeker head is provided on the side wall of the seeker head. A second vertical elongated hole corresponding to the inner and outer sides of the first vertical elongated hole is provided on the side wall of the outer cylinder. A third vertical elongated hole communicating with the interior of the launch rod is provided on the side wall of the launch rod. The third vertical elongated hole corresponds to the inner and outer sides of the second vertical elongated hole. A centralizing sleeve is provided on the outer side of the outer cylinder. A fourth vertical elongated hole corresponding to the inner and outer sides of the second vertical elongated hole is provided on the side wall of the centralizing sleeve.

[0009] The above-mentioned locking mechanism uses a locking cap, which is inverted T-shaped. The upper part of the locking cap is fixedly installed at the lower end of the guide head, and the middle part of the locking cap is open from top to bottom.

[0010] The outer side of the narrow diameter section of the aforementioned fixing sleeve is fixedly installed to the inner side of the upper end of the outer cylinder by threads; the outer side of the lower part of the launching rod is fixedly installed to the inner side of the upper part of the guide head by threads; the upper part of the locking cap is fixedly installed at the lower end of the guide head by threads.

[0011] This invention combines a guide head, an energy storage ejection mechanism, and a launch rod, which can effectively improve the efficiency of signal line threading through oil pipes during magnetic positioning system measurement operations, reduce auxiliary time, and clean debris inside the oil pipes, effectively protecting the signal line. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention.

[0013] Appendix Figure 2 For the appendix Figure 1 Enlarged cross-sectional view of section AA.

[0014] Appendix Figure 3 For the appendix Figure 1 Enlarged cross-sectional view of the structure at point BB.

[0015] The codes in the attached diagram are as follows: 1 is the fixing sleeve, 2 is the outer cylinder, 3 is the guide head, 4 is the launching rod, 5 is the limiting ring groove, 6 is the signal line passage channel, 7 is the locking pin, 8 is the locking groove, 9 is the limiting ring platform, 10 is the compression spring, 11 is the guide platform, 12 is the first vertical long hole, 13 is the second vertical long hole, 14 is the third vertical long hole, 15 is the straightening sleeve, 16 is the fourth vertical long hole, and 17 is the locking cap. Detailed Implementation

[0016] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0017] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.

[0018] The present invention will be further described below with reference to embodiments:

[0019] Example 1: As shown in the attached document Figure 1 As shown, the magnetic positioning system signal line oil pipe threading tool includes a fixed sleeve 1, an outer cylinder 2, a guide head 3, a locking mechanism, and a launching rod 4. The fixed sleeve 1 is T-shaped, and the outer side of the narrow diameter section of the fixed sleeve 1 is fixedly installed with the inner side of the upper end of the outer cylinder 2. A limit ring groove 5 is provided on the outer edge of the bottom of the wide diameter section of the fixed sleeve 1. The lower end of the launching rod 4 extends into the outer cylinder 2 from the fixed sleeve 1, and the outer diameter of the launching rod 4 is smaller than the inner diameter of the fixed sleeve 1. The guide head 3 is located in the outer cylinder 2 below the fixed sleeve 1, and the outer diameter of the guide head 3 is smaller than the inner diameter of the outer cylinder 2. The lower part of the launch rod 4 is fixedly connected to the upper part of the guide head 3. An energy storage ejection mechanism located inside the outer cylinder 2 is fixedly connected between the fixed sleeve 1 on the outside of the launch rod 4 and the guide head 3. A locking mechanism that can lock the energy storage ejection mechanism in an unlaunched state is fixedly installed on the launch rod 4. A wire locking mechanism with a maximum longitudinal cross-sectional width smaller than the maximum longitudinal cross-sectional width of the guide head 3 is fixedly connected to the lower end of the guide head 3. The inside of the launch rod 4, the guide head 3 and the wire locking mechanism forms a signal line passage channel 6 from top to bottom.

[0020] When using this tool, the launch rod 4 is pulled upwards, and the energy storage ejection mechanism begins to store energy. After the energy storage ejection mechanism is compressed into place, it is locked by the locking mechanism. Then, the signal line is passed through the inside of the launch rod 4 and the guide head 3, so that the signal line connector is led out to the locking mechanism and fixed. Then, the lower part of this tool is inserted into the oil pipe and the fixing sleeve 1 is placed on one end of the oil pipe through the limiting ring groove 5. The locking mechanism is pulled out, the energy storage ejection mechanism is reset, and the launch rod 4 moves downwards, pushing the guide head 3 through the inner cavity of the oil pipe to the other end of the oil pipe. The locking mechanism is removed, and the threading operation of a single oil pipe is completed.

[0021] The seeker head 3 not only guides the signal line through the oil pipe, but also cleans the inner diameter of the oil pipe after it is ejected through the oil pipe, effectively reducing sharp debris and edges; the signal line is hidden inside the launch rod 4 and the seeker head 3, which is more conducive to protecting the signal line.

[0022] This tool makes the signal wire threading process in oil pipes more reliable, effectively solving the problems of difficulty and slow threading speed when threading signal wires into oil pipes. It is simple to operate, highly efficient, and simultaneously achieves the dual functions of duct clearance and protection.

[0023] The energy storage ejection mechanism provides power for the ejection of the signal line using this tool. The locking mechanism is used to lock the energy storage ejection mechanism.

[0024] Example 2: As shown in the attached document Figure 1 As shown, as an optimization of the above embodiment, the locking mechanism adopts a locking pin 7, and a locking groove 8 is provided radially on the outside of the launch rod 4 when the corresponding energy storage ejection mechanism reaches the maximum compression state. One end of the locking pin 7 is fixedly installed in the locking groove 8.

[0025] When the locking pin 7 is inserted into the locking slot 8, the energy storage ejection mechanism is locked; when the locking pin 7 is pulled out, the energy storage ejection mechanism is ejected.

[0026] Example 3: As shown in the attached document Figure 1 As shown, as an optimization of the above embodiment, a limiting ring platform 9 with a maximum longitudinal cross-sectional width greater than the inner diameter of the fixing sleeve 1 is provided on the outer side of the upper end of the launching rod 4.

[0027] The limiting ring 9 is designed to prevent the entire launch rod 4 from passing through the inside of the outer cylinder 2 when the energy storage ejection mechanism is launched. The limiting ring 9 of the launch rod 4 can be locked at the top of the fixed sleeve 1.

[0028] Example 4: As an optimization of the above embodiments, the energy storage ejection mechanism adopts a compression spring 10 as needed.

[0029] Example 5: As shown in the attached document Figure 2 , 3 As shown, as an optimization of the above embodiment, the outer wall of the seeker head 3 is provided with a guide groove running from top to bottom, and the inner wall of the outer cylinder 2 is provided with a guide platform 11 that matches the guide groove. The guide platform 11 is located inside the guide groove. The side wall of the seeker head 3 is provided with a first vertical elongated hole 12 that communicates with its interior. The side wall of the outer cylinder 2 is provided with a second vertical elongated hole 13 that corresponds to the inner and outer sides of the first vertical elongated hole 12. The side wall of the launch rod 4 is provided with a third vertical elongated hole 14 that communicates with its interior. The third vertical elongated hole 14 corresponds to the inner and outer sides of the second vertical elongated hole 13.

[0030] The setting of the guide platform 11 and the guide slot can, on the one hand, further prevent the guide head 3 from deviating during the ejection process, and on the other hand, keep the internal and external of each vertical long hole in a corresponding state, so that the signal line can quickly pass through this tool in front of the energy storage ejection mechanism.

[0031] Example 5: As shown in the attached document Figure 3 As shown, as an optimization of the above embodiment, a straightening sleeve 15 is provided on the outer side of the outer cylinder 2, and a fourth vertical elongated hole 16 corresponding to the inner and outer sides of the second vertical elongated hole 13 is provided on the side wall of the straightening sleeve 15.

[0032] The centering sleeve 15 is used to ensure the centering of this tool in the oil pipe, which is more conducive to protecting the seeker head 3 and ensuring successful ejection.

[0033] Example 6: As attached Figure 1 As shown, as an optimization of the above embodiment, the locking mechanism adopts a locking cap 17, which is inverted T-shaped. The upper part of the locking cap 17 is fixedly installed at the lower end of the guide head 3, and the middle part of the locking cap 17 is vertically continuous.

[0034] Example 7: As an optimization of the above embodiment, the outer side of the narrow diameter section of the fixing sleeve 1 is fixedly installed together with the inner side of the upper end of the outer cylinder 2 by threads; the outer side of the lower part of the launching rod 4 is fixedly installed together with the inner side of the upper part of the guide head 3 by threads; and the upper part of the locking cap 17 is fixedly installed at the lower end of the guide head 3 by threads.

[0035] The threaded connection method facilitates installation and disassembly.

[0036] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A magnetic positioning system signal wire through tubing tool characterized by The device comprises a fixed sleeve, an outer cylinder, a guide head, a locking mechanism and a launching rod, the fixed sleeve is T-shaped, the outer side of the narrow diameter section of the fixed sleeve is fixedly installed with the inner side of the upper end of the outer cylinder, a limiting ring groove is arranged on the outer side of the bottom of the wide diameter section of the fixed sleeve, the lower end of the launching rod extends into the outer cylinder from the fixed sleeve, the outer diameter of the launching rod is smaller than the inner diameter of the fixed sleeve, the guide head is located in the outer cylinder below the fixed sleeve, the outer diameter of the guide head is smaller than the inner diameter of the outer cylinder, the lower part of the launching rod is fixedly connected with the upper part of the guide head, the energy storage and launching mechanism located in the outer cylinder is fixedly connected between the fixed sleeve and the guide head on the outer side of the launching rod, the locking mechanism capable of locking the energy storage and launching mechanism in the non-launching state is fixedly installed on the launching rod, the locking mechanism is fixedly connected with the guide head at the lower end, the maximum longitudinal cross-sectional width of the locking mechanism is smaller than that of the guide head, and the inside of the launching rod, the guide head and the locking mechanism forms a signal line passing channel from top to bottom.

2. The magnetic positioning system signal wire through tubing tool of claim 1, wherein The energy storage and launching mechanism adopts a compression spring, the locking mechanism adopts a locking pin, and a locking groove is arranged on the outer side of the launching rod corresponding to the maximum compression state of the energy storage and launching mechanism.

3. The magnetic positioning system signal wire through tubing tool of claim 1 or 2, wherein The outer side of the upper end of the launching rod is provided with a limiting ring table with a maximum longitudinal cross-sectional width greater than the inner diameter of the fixed sleeve.

4. The magnetic positioning system signal wire through tubing tool of claim 1 or 2, wherein The outer wall of the guide head is provided with a guide long groove from top to bottom, the inner wall of the outer cylinder is provided with a guide long table matched with the guide long groove, the guide long table is located in the guide long groove, the side wall of the guide head is provided with a first vertical long hole communicated with the inside thereof, the side wall of the outer cylinder is provided with a second vertical long hole corresponding to the first vertical long hole, the side wall of the launching rod is provided with a third vertical long hole communicated with the inside thereof, and the third vertical long hole corresponds to the second vertical long hole; the outer side of the outer cylinder is provided with a centralizing sleeve, and the side wall of the centralizing sleeve is provided with a fourth vertical long hole corresponding to the second vertical long hole.

5. The magnetic positioning system signal wire through tubing tool of claim 3, wherein The outer wall of the guide head is provided with a guide long groove from top to bottom, the inner wall of the outer cylinder is provided with a guide long table matched with the guide long groove, the guide long table is located in the guide long groove, the side wall of the guide head is provided with a first vertical long hole communicated with the inside thereof, the side wall of the outer cylinder is provided with a second vertical long hole corresponding to the first vertical long hole, the side wall of the launching rod is provided with a third vertical long hole communicated with the inside thereof, and the third vertical long hole corresponds to the second vertical long hole; the outer side of the outer cylinder is provided with a centralizing sleeve, and the side wall of the centralizing sleeve is provided with a fourth vertical long hole corresponding to the second vertical long hole.

6. The magnetic positioning system signal wire through tubing tool of claim 1 or 2 or 5, wherein The locking mechanism adopts a locking cap, the locking cap is inverted T-shaped, the upper part of the locking cap is fixedly installed at the lower end of the guide head, and the middle part of the locking cap is vertically penetrated.

7. The magnetic positioning system signal wire through tubing tool of claim 3, wherein The locking mechanism adopts a locking cap, the locking cap is inverted T-shaped, the upper part of the locking cap is fixedly installed at the lower end of the guide head, and the middle part of the locking cap is vertically penetrated.

8. The magnetic positioning system signal wire through tubing tool of claim 4, wherein The locking mechanism adopts a locking cap, the locking cap is inverted T-shaped, the upper part of the locking cap is fixedly installed at the lower end of the guide head, and the middle part of the locking cap is vertically penetrated.

9. The magnetic positioning system signal wire through tubing tool of claim 1 or 2 or 5 or 7 or 8, wherein The outer side of the narrow diameter section of the fixed sleeve is fixedly installed with the inner side of the upper end of the outer cylinder through threads; the outer side of the lower part of the launching rod is fixedly installed with the inner side of the upper part of the guide head through threads; and the upper part of the locking cap is fixedly installed at the lower end of the guide head through threads.

10. The magnetic positioning system signal wire through tubing tool of claim 6, wherein The narrow diameter section of the fixing sleeve is fixedly installed with the upper end of the outer cylinder through screw thread; the lower part of the launching rod is fixedly installed with the upper part of the guide head through screw thread; the upper part of the locking wire cap is fixedly installed at the lower end of the guide head through screw thread.

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