Bus modular track measuring tool

Abstract

The application relates to the technical field of trajectory measurement in the oil drilling industry, and is a bus modular trajectory measurement tool which comprises an MWD inclinometer probe, a conversion sleeve, a supporting sleeve and a tubular non-magnetic drill collar body arranged leftward and rightward, the non-magnetic drill collar body is coaxially sleeved with the MWD inclinometer probe, the right end of the MWD inclinometer probe is fixedly installed with the supporting sleeve sleeved on the inner side of the right part of the non-magnetic drill collar body, and the left end of the MWD inclinometer probe is fixedly installed with the conversion sleeve sleeved on the inner side of the left part of the non-magnetic drill collar body. The application has reasonable and compact structure, the right end of the non-magnetic drill collar body can be connected with various downhole measurement tools, after being connected with the downhole measurement tools, the measurement parameters measured by the MWD inclinometer probe measurement module can be transmitted to a system platform, borehole trajectory parameters are provided for ground engineers in real time, as a system independent module, the application solves the problem of poor contact of the connecting line under vibration conditions, has low maintenance cost, high interchangeability, realizes standardized process operation, and can reduce maintenance time.

Description

TECHNICAL FIELD

[0001] The present application relates to the trajectory measurement technology field in the oil drilling industry, and is a bus modular trajectory measurement tool. BACKGROUND

[0002] The conventional MWD measurement instrument while drilling is often used alone in the drilling industry, and the measured trajectory inclination angle, azimuth angle and tool face angle are sent to the ground. The ground engineer adjusts the direction of the downhole bent sub based on the trajectory parameters to meet the needs of sliding directional drilling. With the increasing functionality of downhole tools, MWD needs to be connected with many tools with different functions to form a unified platform system. The conventional MWD measurement instrument while drilling adopts a central probe pipe type mechanical structure and belongs to an independent whole. The connection mode with other tools is as follows: (1) a helical wire bundle soft connection mode is adopted. When the helical wire is twisted and deformed relative to the rotation of the other tools, the connection pin is virtually connected, which causes hidden troubles. Under the vibration condition in the downhole, the MWD instrument and the connected tool are not in good contact. SUMMARY

[0003] The present application provides a bus modular trajectory measurement tool, which overcomes the shortcomings of the prior art and effectively solves the problem of poor contact between the conventional MWD measurement instrument while drilling and other tools.

[0004] The technical scheme of the present application is realized by the following measures: a bus modular trajectory measurement tool, comprising an MWD inclinometer probe pipe, a conversion sleeve, a support sleeve and a left and right directionally arranged tubular non-magnetic drill collar body, the non-magnetic drill collar body coaxially sleeving the MWD inclinometer probe pipe, the MWD inclinometer probe pipe fixedly installed with the support sleeve sleeved in the right inner side of the non-magnetic drill collar body at the right end, the MWD inclinometer probe pipe fixedly installed with the conversion sleeve sleeved in the left inner side of the non-magnetic drill collar body at the left end, the right part of the non-magnetic drill collar body being provided with a stepped surface, the left end of the non-magnetic drill collar body being provided with a wire passing hole extending to the stepped surface, the left outer side of the non-magnetic drill collar body being provided with a test groove in communication with the wire passing hole, the lower inner wall of the test groove being provided with a test hole in communication with the inner side of the non-magnetic drill collar body, the outer side of the conversion sleeve corresponding to the position of the test hole being provided with a positioning hole, the right end center of the conversion sleeve being provided with a communication hole in communication with the positioning hole at the left end, the test hole being provided with a hollow positioning pin screwed into the positioning hole at the end, and the left end of the conversion sleeve being provided with a plurality of first flow holes penetrating left and right.

[0005] The following is a further optimization or / and improvement of the above-mentioned technical scheme:

[0006] The center of the left end of the aforementioned conversion sleeve can be fixed with a tapered first diverter cone that is smaller on the left and larger on the right, and the left end of the conversion sleeve is provided with two fan-shaped first flow holes at intervals.

[0007] The right end of the aforementioned support sleeve can be fixed with a tapered second flow divider cone that is larger on the left and smaller on the right. The right end of the support sleeve corresponding to the outer position of the second flow divider cone has several fan-shaped second flow holes evenly distributed along the circumference.

[0008] Both the inner walls of the first and second flow holes can be provided with an erosion-resistant layer.

[0009] The aforementioned non-magnetic drill collar body may have a first connecting hole, a second connecting hole, a third connecting hole, a fourth connecting hole and a fifth connecting hole connected sequentially from left to right and with gradually decreasing diameters. The MWD inclinometer tube is coaxially fitted into the third connecting hole. The outer left and outer right sides of the conversion sleeve corresponding to the left and right positions of the positioning pin are each provided with at least one first sealing ring spaced apart. A second sealing ring is provided between the outer side of the support sleeve and the inner side of the fourth connecting hole. An annular groove with an opening to the right and its left side connected to the right end of the wire hole is provided on the stepped surface. A slip ring is fixedly installed inside the annular groove.

[0010] The above-mentioned MWD inclinometer probe has several straightening blocks evenly distributed around its circumference on the outer side of the middle section.

[0011] This invention features a reasonable and compact structure, making it easy to use. The right end of the non-magnetic drill collar can be connected to various downhole measurement tools. After being connected to a downhole measurement tool, it can transmit the measurement parameters measured by the MWD inclination probe module to the system platform, providing wellbore trajectory parameters to surface engineers in real time. As an independent module of the system, it solves the problem of poor contact of the docking line under vibration conditions, has low maintenance costs, strong interchangeability, realizes standardized process operation, and can also reduce maintenance time. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the main sectional view of the structure after removing the cover plate and locating pin in Example 1.

[0013] Appendix Figure 2 This is a schematic diagram of the right-side cross-sectional structure of the conversion sleeve in Example 1.

[0014] Appendix Figure 3 This is a schematic diagram of the right side of the support sleeve in Example 1.

[0015] The codes in the attached diagram are as follows: 1 is the MWD inclinometer tube, 2 is the conversion sleeve, 3 is the support sleeve, 4 is the non-magnetic drill collar body, 5 is the stepped surface, 6 is the wire hole, 7 is the test groove, 8 is the test hole, 9 is the positioning hole, 10 is the connecting hole, 11 is the first flow hole, 12 is the first flow divider cone, 13 is the second flow divider cone, 14 is the second flow hole, 15 is the erosion-resistant layer, 16 is the first connecting hole, 17 is the second connecting hole, 18 is the third connecting hole, 19 is the fourth connecting hole, 20 is the fifth connecting hole, 21 is the first sealing ring, 22 is the second sealing ring, 23 is the slip ring, and 24 is the straightening block. Detailed Implementation

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

[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 front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

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

[0019] Example 1: As shown in the attached document Figure 1 , 2 As shown in Figure 3, the modular bus trajectory measurement tool includes an MWD inclinometer tube 1, a conversion sleeve 2, a support sleeve 3, and a tubular non-magnetic drill collar body 4 arranged in a left-right direction. The MWD inclinometer tube 1 is coaxially mounted inside the non-magnetic drill collar body 4. A support sleeve 3, fitted inside the right side of the non-magnetic drill collar body 4, is fixedly installed at the right end of the MWD inclinometer tube 1. A conversion sleeve 2, fitted inside the left side of the non-magnetic drill collar body 4, is fixedly installed at the left end of the MWD inclinometer tube 1. A stepped surface 5 is provided on the right side of the non-magnetic drill collar body 4. The left end of the non-magnetic drill collar body 4... The device has a wire-passing hole 6 extending to the stepped surface 5 on the right end. The outer left side of the non-magnetic drill collar body 4 has a test groove 7 that communicates with the wire-passing hole 6. The lower inner wall of the test groove 7 has a test hole 8 that communicates with the inner side of the non-magnetic drill collar body 4. The outer side of the conversion sleeve 2 corresponding to the position of the test hole 8 has a positioning hole 9. The center of the right end of the conversion sleeve 2 has a connecting hole 10 that communicates with the positioning hole 9 on the left end. The test hole 8 has a hollow positioning pin with its end screwed into the positioning hole 9. The left end of the conversion sleeve 2 has several first flow holes 11 that are spaced apart and pass through from left to right.

[0020] According to the requirements, the MWD inclinometer probe 1 is a known technology. The MWD inclinometer probe 1 is equipped with a triaxial acceleration and a triaxial fluxgate sensor. The MWD inclinometer probe 1 is inserted into the non-magnetic drill collar body 4 as an independent whole. The non-magnetic drill collar body 4 at the corresponding test slot 7 position is detachably sealed and fixedly installed with a cover plate.

[0021] During use, with this setup, the right end of the non-magnetic drill collar body 4 can be connected to various downhole measurement tools, such as rotary steerable drilling system tools, vertical drilling system tools, and geological steering system tools. When connecting to downhole measurement tools, simply use a threaded connection to secure the non-magnetic drill collar body 4 to the downhole measurement tool. Then, the measurement parameters measured by the MWD inclination probe 1 measurement module can be transmitted to the system platform, providing wellbore trajectory parameters to the surface engineer in real time. As an independent module of the system, it solves the problem of poor contact of the docking line under vibration conditions, has low maintenance costs, strong interchangeability, realizes standardized process operation, and can also reduce maintenance time.

[0022] The above-mentioned bus modular trajectory measurement tool can be further optimized and / or improved according to actual needs:

[0023] Example 2: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown, a tapered first diversion cone 12, smaller on the left and larger on the right, is fixed at the center of the left end of the conversion sleeve 2. Two fan-shaped first flow holes 11 are spaced apart at the left end of the conversion sleeve 2. During use, by setting the first diversion cone 12 and the first flow holes 11, the flow rate of drilling fluid can be increased, and the erosion resistance of the conversion sleeve 2 can also be improved, enabling its application in high-displacement environments.

[0024] Example 3: As an optimization of the above examples, as shown in the appendix. Figure 1 , 3 As shown, a tapered second flow divider cone 13, larger on the left and smaller on the right, is fixed to the right end of the support sleeve 3. Corresponding to the outer position of the second flow divider cone 13, a plurality of fan-shaped annular second flow passage holes 14 are evenly distributed along the circumference of the right end of the support sleeve 3. By setting the second flow divider cone 13 and the second flow passage holes 14, the flow rate of drilling fluid can be increased, and the erosion resistance of the support sleeve 3 can also be improved, enabling its application in high-displacement environments.

[0025] Example 4: As an optimization of the above examples, as shown in the appendix. Figure 2 As shown, both the inner walls of the first flow passage 11 and the second flow passage 14 are provided with an erosion-resistant layer 15. Depending on the requirements, the erosion-resistant layer 15 is a tungsten carbide coating sprayed onto the inner walls of the first flow passage 11 and the second flow passage 14. During use, this design improves the thermal stability, erosion resistance, and impact resistance of the support sleeve 3 and the conversion sleeve 2, thus extending their service life.

[0026] Example 5: As an optimization of the above examples, as shown in the appendix. Figure 1As shown, the non-magnetic drill collar body 4 has a first connecting hole 16, a second connecting hole 17, a third connecting hole 18, a fourth connecting hole 19, and a fifth connecting hole 20 connected from left to right and with gradually decreasing diameters. The MWD inclinometer tube 1 is coaxially fitted into the third connecting hole 18. The outer left and outer right sides of the conversion sleeve 2, corresponding to the left and right positions of the positioning pin, are each provided with at least one first sealing ring 21 spaced apart. A second sealing ring 22 is provided between the outer side of the support sleeve 3 and the inner side of the fourth connecting hole 19. The stepped surface 5 has an annular groove with an opening to the right and its left side connected to the right end of the wire hole 6. A slip ring 23 is fixedly installed inside the annular groove.

[0027] During use, the right end face of the conversion sleeve 2 contacts the stepped surface 5 at the second connecting hole 17 and the third connecting hole 18, and the right end face of the support sleeve 3 contacts the transition stepped surface formed by the fourth connecting hole 19 and the fifth connecting hole 20, which can play a supporting and limiting role. The slip ring 23 can not only solve the problem of difficult wire connection when the non-magnetic drill collar body 4 is docked with the docking tool, but also transmit electrical energy and carrier signals. It can transmit electrical energy to the MWD inclination probe 1, and at the same time, the wellbore trajectory measurement parameters measured by the measurement module in the MWD inclination probe 1 are transmitted to the docking tool. In the system, for easy transmission to the ground, the slip ring 23 is a known through-hole slip ring as required. The back of the slip ring 23 is connected to the high-pressure single-core pin, which plays a high-pressure isolation role, so that the sealing of the non-magnetic drill collar body 4 can be controlled independently, avoiding the impact on the operation of other systems after failure. The high-pressure single-core pin connecting wire extends all the way to the conversion sleeve 2, and is connected to the module inside the MWD inclination probe 1 through the hollow positioning pin. By setting the first sealing ring 21 and the second sealing ring 22, the mud can be isolated. After the non-magnetic drill collar body 4 is out of the well, it is easy to disassemble from the MWD inclination probe 1.

[0028] Example 6: As an optimization of the above examples, as shown in the appendix. Figure 1 As shown, several straightening blocks 24 are evenly distributed around the outer side of the middle of the MWD inclinometer tube 1. During use, this arrangement ensures that the MWD inclinometer tube 1 is located in the center of the third connecting hole 18 and also provides support for the MWD inclinometer tube 1.

[0029] 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 bus-modular trajectory measurement tool, characterized in that, The device includes an MWD inclinometer tube, a conversion sleeve, a support sleeve, and a tubular non-magnetic drill collar body arranged in a left-right direction. The MWD inclinometer tube is coaxially mounted inside the non-magnetic drill collar body. The support sleeve, which is fitted inside the right side of the non-magnetic drill collar body, is fixedly installed at the right end of the MWD inclinometer tube. The conversion sleeve, which is fitted inside the left side of the non-magnetic drill collar body, is fixedly installed at the left end of the MWD inclinometer tube. The right side of the non-magnetic drill collar body has a stepped surface. The left end of the non-magnetic drill collar body has a wire-passing hole that extends to the stepped surface at the right end. The outer side of the left side of the non-magnetic drill collar body has a test groove that communicates with the wire-passing hole. The lower inner wall of the test groove has a test hole that communicates with the inner side of the non-magnetic drill collar body. The outer side of the conversion sleeve corresponding to the test hole position has a positioning hole. The center of the right end of the conversion sleeve has a connecting hole that communicates with the positioning hole at the left end. The test hole has a hollow positioning pin that is screwed into the positioning hole at the end. The left end of the conversion sleeve has several first flow holes that are spaced apart and pass through from left to right. A first flow divider cone with a smaller left side and a larger right side is fixed at the center of the left end of the conversion sleeve, and two fan-shaped first flow holes are provided at intervals on the left end of the conversion sleeve. A tapered second flow divider cone, which is larger on the left and smaller on the right, is fixed at the right end of the support sleeve. A number of fan-shaped second flow holes are evenly distributed around the circumference at the right end of the support sleeve corresponding to the outer position of the second flow divider cone. The non-magnetic drill collar has a first connecting hole, a second connecting hole, a third connecting hole, a fourth connecting hole and a fifth connecting hole that are connected from left to right and whose diameters gradually decrease. The MWD inclinometer probe is coaxially fitted into the third connecting hole.

2. The bus modular trajectory measurement tool according to claim 1, characterized in that, The inner walls of both the first and second flow holes are provided with erosion-resistant layers.

3. The bus modular trajectory measurement tool according to claim 1 or 2, characterized in that, The outer left and outer right sides of the conversion sleeve corresponding to the left and right positions of the positioning pin are provided with at least one first sealing ring at intervals. A second sealing ring is provided between the outer side of the support sleeve and the inner side of the fourth connecting hole. An annular groove with an opening to the right and the left side communicating with the right end of the wire hole is provided on the stepped surface. A slip ring is fixedly installed inside the annular groove.

4. The bus modular trajectory measurement tool according to claim 3, characterized in that, Several straightening blocks are evenly distributed along the circumference on the outer side of the middle part of the MWD inclinometer probe.

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