Bus modular trajectory measurement tool

Abstract

The invention relates to the technical field of trajectory measurement in the oil drilling industry, in particular to a bus modular trajectory measurement tool which comprises an MWD (measurement while drilling) inclinometer probe, a conversion sleeve, a supporting sleeve and a tubular non-magnetic drill collar body arranged in the left-right direction. The right end of the MWD inclinometer probe is fixedly provided with a supporting sleeve which is arranged on the inner side of the right portion of the non-magnetic drill collar body in a sleeved mode, and the left end of the MWD inclinometer probe is fixedly provided with a conversion sleeve which is arranged on the inner side of the left portion of the non-magnetic drill collar body in a sleeved mode. The non-magnetic drill collar is reasonable and compact in structure, the right end of the non-magnetic drill collar body can be connected with various underground measuring tools, after the non-magnetic drill collar body is connected with the underground measuring tools, measuring parameters measured by the MWD inclinometer probe measuring module can be transmitted to a system platform, well track parameters are provided for ground engineers in real time, and the non-magnetic drill collar serves as an independent module of the system and is convenient to use. The problem of poor contact of butt joint lines under the vibration condition is solved, the maintenance cost is low, the interchangeability is high, standardized process operation is achieved, and the maintenance time can be shortened.

Description

Technical Field

[0001] The invention relates to the technical field of trajectory measurement in the oil drilling industry, and is a bus modularized trajectory measurement tool. Background Art

[0002] Conventional MWD measuring instruments are often used alone in the drilling industry. The measured trajectory inclination, azimuth and tool face angle are sent to the ground. The ground engineer adjusts the direction of the downhole bent screw according to the trajectory parameters to meet the needs of sliding directional drilling. As the functions of downhole tools become increasingly powerful, MWD needs to be connected with many tools with different functions to form a unified platform system. Conventional MWD measuring instruments all use a central probe tube mechanical structure and are independent entities. The connection methods with other tools are as follows: (1) The spiral wire harness soft connection method is used. When the spiral wire is connected and rotated with other tools, it is relatively twisted and deformed, resulting in the hidden danger of virtual connection of the connecting pin. Under the vibration conditions of the downhole, the MWD instrument and the docking tool are in poor contact. (2) The multi-core rotating pin method is used. Before the axial connection of other tools, the axial length of the MWD instrument and the docking tool needs to be measured, and the transition short section is adjusted with a gasket. Since the measured axial length will produce errors, the axial deviation of the multi-core rotating pin will be misaligned, resulting in poor contact between the MWD instrument and the docking tool. Summary of the invention

[0003] The present invention provides a bus modular trajectory measurement tool, which overcomes the above-mentioned deficiencies of the prior art and can effectively solve the problem of poor contact between the existing conventional MWD measuring instrument and other tools.

[0004] The technical solution of the present invention is achieved through the following measures: a bus modular trajectory measurement tool, including an MWD inclination probe tube, a conversion sleeve, a support sleeve and a tubular non-magnetic drill collar body arranged in left and right directions, the non-magnetic drill collar body is coaxially sleeved with an MWD inclination probe tube, the right end of the MWD inclination probe tube is fixedly installed with a support sleeve sleeved on the inner side of the right part of the non-magnetic drill collar body, the left end of the MWD inclination probe tube is fixedly installed with a conversion sleeve sleeved on the inner side of the left part of the non-magnetic drill collar body, and the right part of the non-magnetic drill collar body is provided with a platform The non-magnetic drill collar body has a step surface, a wire hole is provided at the left end of the non-magnetic drill collar body and the right end extends to the step surface, a test slot connected with the wire hole is provided on the outer side of the left part of the non-magnetic drill collar body, a test hole connected with the inner inside of the non-magnetic drill collar body is provided on the lower inner wall of the test slot, a positioning hole is provided on the outer side of the conversion sleeve corresponding to the position of the test hole, a connecting hole is provided at the center of the right end of the conversion sleeve and the left end is connected with the positioning hole, a hollow positioning pin is provided in the test hole and the end is screwed into the positioning hole, and a plurality of first flow holes that pass through the left and right sides are provided at intervals on the left end of the conversion sleeve.

[0005] The following are further optimizations and / or improvements to the above technical solutions: A first conical flow dividing cone with a smaller left side and a larger right side can be fixed at the center of the left end of the conversion sleeve, and two first fan-shaped flow holes are arranged at intervals at the left end of the conversion sleeve.

[0006] A second conical flow dividing cone with a larger left side and a smaller right side can be fixed on the right end of the support sleeve, and a plurality of second flow holes in a fan-shaped shape are evenly distributed along the circumference at the right end of the support sleeve corresponding to the outer side of the second flow dividing cone.

[0007] The inner wall of the first flow hole and the inner wall of the second flow hole may be provided with an erosion-resistant layer.

[0008] The above-mentioned non-magnetic drill shank body may be provided with a first connecting hole, a second connecting hole, a third connecting hole, a fourth connecting hole and a fifth connecting hole which are connected in sequence from left to right and whose diameters gradually decrease. The MWD inclination probe tube is coaxially sleeved in the third connecting hole. At least one first sealing ring is arranged on the left and right outer sides of the conversion sleeve corresponding to the left and right positions of the locating pin. A second sealing ring is arranged between the outer side of the support sleeve and the inner side of the fourth connecting hole. An annular groove is arranged on the step surface, the opening of which faces right and the left side is connected with the right end of the wire hole, and a slip ring is fixedly installed on the inner side of the annular groove.

[0009] A plurality of straightening blocks may be evenly distributed along the circumference on the outer side of the middle portion of the MWD inclinometer probe tube.

[0010] The present invention has a reasonable and compact structure and is easy to use. The right end of the non-magnetic drill collar body can be connected to a variety of downhole measuring tools. After being connected to the downhole measuring tools, the measurement parameters measured by the MWD inclination probe measurement module can be transmitted to the system platform, and the wellbore trajectory parameters can be provided to ground 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 operations, and can also reduce maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 This is a schematic diagram of the front cross-sectional structure of Example 1 after the cover plate and the positioning pins are removed.

[0012] Attached Figure 2 It is a schematic diagram of the right side cross-sectional structure of the conversion sleeve in the first embodiment.

[0013] Attached Figure 3 It is a schematic diagram of the right side structure of the support sleeve in Example 1.

[0014] The codes in the accompanying drawings are: 1 is the MWD inclinometer probe, 2 is the conversion sleeve, 3 is the support sleeve, 4 is the non-magnetic drill collar body, 5 is the step surface, 6 is the wire hole, 7 is the test slot, 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 diverter cone, 13 is the second diverter 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 DESCRIPTION

[0015] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0016] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0017] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1: As shown in the attached Figure 1 , 2 As shown in Figure 3, the bus modular trajectory measurement tool includes an MWD inclination probe tube 1, a conversion sleeve 2, a support sleeve 3 and a tubular non-magnetic drill collar body 4 arranged in the left and right directions. The non-magnetic drill collar body 4 is coaxially sleeved with the MWD inclination probe tube 1, the right end of the MWD inclination probe tube 1 is fixedly installed with the support sleeve 3 sleeved on the inner side of the right part of the non-magnetic drill collar body 4, the left end of the MWD inclination probe tube 1 is fixedly installed with the conversion sleeve 2 sleeved on the inner side of the left part of the non-magnetic drill collar body 4, the right part of the non-magnetic drill collar body 4 is provided with a step surface 5, and the left end of the non-magnetic drill collar body 4 A wire passing hole 6 is provided, the right end of which extends to the step surface 5; a test groove 7 connected to the wire passing hole 6 is provided on the outer side of the left part of the non-magnetic drill collar body 4; a test hole 8 connected to the inner side of the non-magnetic drill collar body 4 is provided on the lower inner wall of the test groove 7; a positioning hole 9 is provided on the outer side of the conversion sleeve 2 corresponding to the position of the test hole 8; a connecting hole 10 connected to the positioning hole 9 at the left end is provided at the center of the right end of the conversion sleeve 2; a hollow positioning pin whose end is screwed into the positioning hole 9 is provided in the test hole 8; a plurality of first flow holes 11 that pass through the left and right sides are provided at intervals on the left end of the conversion sleeve 2.

[0018] According to the needs, the MWD inclinometer probe 1 is an existing well-known technology. The MWD inclinometer probe 1 is equipped with a three-axis acceleration sensor and a three-axis fluxgate sensor. The MWD inclinometer probe 1 is inserted into the non-magnetic drill shank body 4 as an independent whole. A cover plate is removably sealed and fixedly installed on the outside of the non-magnetic drill shank body 4 corresponding to the position of the test slot 7.

[0019] During use, through such a setting, the right end of the non-magnetic drill shank body 4 can be connected to a variety of downhole measuring tools, such as rotary steerable drilling system tools, vertical drilling system tools, and geological steerable system tools. When connecting with the downhole measuring tool, it is only necessary to connect the non-magnetic drill shank body 4 to the downhole measuring tool through a threaded connection, and then the measurement parameters measured by the MWD inclination probe 1 measurement module can be transmitted to the system platform to provide the wellbore trajectory parameters to the ground 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 cost, strong interchangeability, realizes standardized process operation, and can also reduce maintenance time.

[0020] The above bus modular trace measurement tool can be further optimized and / or improved according to actual needs: Embodiment 2: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown, a first conical flow diverter cone 12 with a small left side and a large right side is fixed at the center of the left end of the conversion sleeve 2, and two fan-shaped first flow holes 11 are arranged at intervals on the left end of the conversion sleeve 2. During use, by providing the first flow diverter cone 12 and the first flow holes 11, the flow rate of drilling fluid can be increased, and the anti-erosion performance of the conversion sleeve 2 can also be improved, and it can be used in a large displacement environment.

[0021] Embodiment 3: As an optimization of the above embodiment, as shown in the attached Figure 1 , 3 As shown, a second conical flow dividing cone 13 with a larger left side and a smaller right side is fixed to the right end of the support sleeve 3, and a plurality of second flow holes 14 in a fan-shaped shape are evenly distributed along the circumference at the right end of the support sleeve 3 corresponding to the outer position of the second flow dividing cone 13. By providing the second flow dividing cone 13 and the second flow holes 14, the amount of drilling fluid passing through can be increased, and the anti-erosion performance of the support sleeve 3 can also be improved, and it can be used in a large displacement environment.

[0022] Embodiment 4: As an optimization of the above embodiment, as shown in the attached Figure 2 As shown, the inner wall of the first flow hole 11 and the inner wall of the second flow hole 14 are both provided with an erosion-resistant layer 15. According to requirements, the erosion-resistant layer 15 is a tungsten carbide coating sprayed on the inner wall of the first flow hole 11 and the inner wall of the second flow hole 14. During use, such a setting can improve the thermal stability, erosion resistance and impact resistance of the support sleeve 3 and the conversion sleeve 2, and extend the service life.

[0023] Embodiment 5: As an optimization of the above embodiment, as shown in the attached Figure 1As shown, the non-magnetic drill shank body 4 is provided with 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 which are connected in sequence from left to right and whose diameters gradually decrease. The MWD inclinometer probe 1 is coaxially sleeved in the third connecting hole 18. At least one first sealing ring 21 is provided on the left and right outer sides of the conversion sleeve 2 corresponding to the left and right positions of the locating pin. 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. An annular groove is provided on the step surface 5, the opening of which faces right and the left side is connected with the right end of the wire hole 6, and a slip ring 23 is fixedly installed on the inner side of the annular groove.

[0024] During use, the right end face of the conversion sleeve 2 contacts the step 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 step 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, and can transmit electrical energy to the MWD inclination probe 1. At the same time, the borehole trajectory measurement parameters measured by the measurement module in the MWD inclination probe 1 are transmitted to the docking tool. In the system, it is convenient to transmit to the ground. According to the needs, the slip ring 23 is an existing well-known through-hole slip ring. The back of the slip ring 23 is connected to the high-voltage single-core pin to play a high-voltage isolation role, so that the seal of the non-magnetic drill collar body 4 can be controlled separately to avoid affecting the operation of other systems after failure. The high-voltage single-core pin connecting wire extends all the way to the conversion sleeve 2, and is connected to the module in the MWD inclination probe 1 through a hollow locating pin. By setting the first sealing ring 21 and the second sealing ring 22, it can play a role in isolating mud. After the non-magnetic drill collar body 4 is out of the well, it is easy to disassemble it from the MWD inclination probe 1.

[0025] Embodiment 6: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, a plurality of straightening blocks 24 are evenly spaced along the circumference of the outer middle part of the MWD inclination probe tube 1. In use, such an arrangement can ensure that the MWD inclination probe tube 1 is located in the center of the third connecting hole 18, and can also support the MWD inclination probe tube 1.

[0026] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A bus modular track measurement tool, characterized in that It comprises an MWD inclination measuring probe tube, a conversion sleeve, a support sleeve and a tubular non-magnetic drill collar body arranged in left and right directions, the non-magnetic drill collar body is coaxially sleeved with the MWD inclination measuring probe tube, the right end of the MWD inclination measuring probe tube is fixedly installed with a support sleeve sleeved on the inner side of the right part of the non-magnetic drill collar body, the left end of the MWD inclination measuring probe tube is fixedly installed with a conversion sleeve sleeved on the inner side of the left part of the non-magnetic drill collar body, the right part of the non-magnetic drill collar body is provided with a step surface, the left end of the non-magnetic drill collar body is provided with a wire hole extending from the right end to the step surface, the outer side of the left part of the non-magnetic drill collar body is provided with a test groove connected with the wire hole, the lower inner wall of the test groove is provided with a test hole connected with the inner side of the non-magnetic drill collar body, the outer side of the conversion sleeve corresponding to the test hole position is provided with a positioning hole, the center of the right end of the conversion sleeve is provided with a connecting hole whose left end is connected with the positioning hole, the test hole is provided with a hollow positioning pin whose end is screwed in the positioning hole, and the left end of the conversion sleeve is provided with a plurality of first flow holes passing through the left and right sides at intervals.

2. The bus modular trace measurement tool according to claim 1, characterized in that A first conical flow dividing 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 first fan-shaped flow holes are arranged at intervals at the left end of the conversion sleeve.

3. The bus modular track measurement tool according to claim 1 or 2, characterized in that A second conical flow dividing cone with a larger left side and a smaller right side is fixed to the right end of the support sleeve, and a plurality of second flow holes in a fan-shaped shape are evenly distributed along the circumference at the right end of the support sleeve corresponding to the outer side of the second flow dividing cone.

4. The bus modular track measurement tool according to claim 3, characterized in that The inner wall of the first flow hole and the inner wall of the second flow hole are both provided with an erosion-resistant layer.

5. The bus modular track measurement tool according to claim 1, 2 or 4, characterized in that The non-magnetic drill shank body is provided with a first connecting hole, a second connecting hole, a third connecting hole, a fourth connecting hole and a fifth connecting hole which are connected in sequence from left to right and whose diameters gradually decrease. The MWD inclinometer probe is coaxially sleeved in the third connecting hole. At least one first sealing ring is arranged on the left and right outer sides of the conversion sleeve corresponding to the left and right positions of the locating pin. A second sealing ring is arranged between the outer side of the support sleeve and the inner side of the fourth connecting hole. An annular groove is arranged on the step surface which opens to the right and the left side is connected with the right end of the wire hole. A slip ring is fixedly installed on the inner side of the annular groove.

6. The bus modular track measurement tool according to claim 3, characterized in that The non-magnetic drill shank body is provided with a first connecting hole, a second connecting hole, a third connecting hole, a fourth connecting hole and a fifth connecting hole which are connected in sequence from left to right and whose diameters gradually decrease. The MWD inclinometer probe is coaxially sleeved in the third connecting hole. At least one first sealing ring is arranged on the left and right outer sides of the conversion sleeve corresponding to the left and right positions of the locating pin. A second sealing ring is arranged between the outer side of the support sleeve and the inner side of the fourth connecting hole. An annular groove is arranged on the step surface which opens to the right and the left side is connected with the right end of the wire hole. A slip ring is fixedly installed on the inner side of the annular groove.

7. The bus modular track measurement tool according to claim 5, characterized in that There are several straightening blocks evenly spaced along the circumference of the outer middle part of the MWD inclinometer probe.

8. The bus modular trace measurement tool according to claim 6, characterized in that There are several straightening blocks evenly spaced along the circumference of the outer middle part of the MWD inclinometer probe.

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