Multi-phase compensation wireless resistivity logging-while-drilling instrument

Abstract

The utility model provides a multi-phase compensation wireless logging-while-drilling resistivity logging instrument. The multi-phase compensation wireless logging-while-drilling resistivity logging instrument comprises an outer sleeve, an inner sleeve, a logging instrument body, a mounting base, a damping assembly, a baffle, a fixing disc and a sealing assembly. The inner sleeve is arranged in the outer sleeve; the logging instrument is mounted between the outer sleeve and the inner sleeve; the mounting seat is arranged on the logging instrument, and the logging instrument is slidably connected between the outer sleeve and the inner sleeve through the mounting seat; the damping assembly is arranged on the mounting seat; the fixed disc is arranged between the outer sleeve and the inner sleeve; and the sealing assembly is arranged between the mounting seat and the fixed disc. Through the structural design of the outer sleeve, the inner sleeve, the logging instrument body, the mounting base, the damping assembly, the baffle, the fixing disc and the sealing assembly, the damping effect of the multi-phase compensation wireless logging-while-drilling resistivity logging instrument in the complex underground environment is improved, and meanwhile the sealing effect of the logging-while-drilling resistivity logging instrument is improved; and the service life of the resistivity logging-while-drilling instrument is prolonged.

Description

Technical Field

[0001] The utility model relates to a multi-phase compensation wireless resistivity logging while drilling instrument. Background Art

[0002] In order to improve the oil and gas recovery rate, the drilling technologies of inclined wells, horizontal wells and extended reach wells are widely used in oil field exploration and development in my country. Measurement while drilling (MWD) and logging while drilling (LWD) are indispensable technical means for drilling azimuth guidance and geological guidance.

[0003] The formation resistivity logging while drilling instrument is an important measuring instrument for geological guidance of horizontal well drilling. It can also be used to determine the oil saturation, permeability, intrusion of drilling fluid, etc. of the formation. It is one of the important means to find oil and gas. The logging while drilling instrument is installed between the outer drill collar and the inner drill collar and is a detection tool lowered into the well with the drill bit. The logging while drilling instrument sends signals through the gamma sensor to detect the content of elements in the formation and ultimately achieve the purpose of detecting drilling parameters and formation parameters.

[0004] At present, resistivity logging while drilling instruments generally rely on shock-absorbing rubber rings for vibration reduction. However, the complex downhole environment makes it impossible to achieve a good vibration reduction effect by relying solely on shock-absorbing rubber rings. In addition, when the existing resistivity logging while drilling instruments are working underground, the sealing effect is poor, resulting in a low service life of the resistivity logging while drilling instruments. Utility Model Content

[0005] The utility model provides a multi-phase compensation wireless resistivity logging while drilling to solve the technical problems that the current resistivity logging while drilling instrument generally relies on a shock-absorbing rubber ring for shock absorption, but the downhole environment is complex so that it is impossible to achieve a good shock absorption effect by relying solely on the shock-absorbing rubber ring, and the existing resistivity logging while drilling instrument has a low service life due to poor sealing effect when working in the downhole.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] The utility model provides a multi-phase compensation wireless resistivity logging tool while drilling, comprising an outer sleeve and an inner sleeve, wherein the inner sleeve is arranged inside the outer sleeve, and further comprising:

[0008] A well logging instrument installed between the outer sleeve and the inner sleeve;

[0009] A mounting seat, wherein the mounting seat is arranged on the well logging instrument, and the well logging instrument is slidably connected between the outer sleeve and the inner sleeve via the mounting seat;

[0010] A shock absorbing assembly, wherein the shock absorbing assembly is arranged on the mounting seat;

[0011] a baffle plate slidably connected to the outer side of the inner sleeve;

[0012] A fixed plate, the fixed plate is arranged between the outer sleeve and the inner sleeve;

[0013] A sealing component is arranged between the mounting seat and the fixing plate.

[0014] In the present technical solution, the shock absorbing assembly is provided to facilitate longitudinal and lateral shock absorption of the logging instrument, and the shock absorption effect is good. The sealing assembly is provided to enhance the sealing of the logging instrument inside the drill bit, thereby increasing the service life of the logging instrument.

[0015] Preferably, the shock absorbing assembly includes a slide groove, a first spring, a slider, a support rod, a connecting sleeve and a second spring, the slide groove is opened on one side of the inner part of the mounting seat, the slider is slidably connected to the slide groove, the support rod is fixedly connected between the two sliders, the first spring is fixedly connected between the inner wall of the slide groove and the slider, the connecting sleeve is slidably connected to the support rod, the second spring is sleeved on both ends of the support rod, and one end of the connecting sleeve is fixedly connected to the outer side wall of one end of the logging instrument.

[0016] In the present technical solution, when the drill bit encounters lateral vibration and longitudinal vibration, the logging instrument slides along the support rod inside the mounting seat through the connecting sleeve in the shock absorbing assembly, and the connecting sleeve drives the second spring to compress or stretch, thereby buffering and shock absorbing the longitudinal vibration encountered by the logging instrument, thereby reducing the impact of the longitudinal vibration on the logging instrument, and the support rod drives the slider to slide along the slide groove, and the slider compresses or stretches the first spring, thereby shock absorbing the lateral vibration of the logging instrument and improving the protection of the logging instrument.

[0017] Preferably, the number of the support rods is four, the four support rods surround the outside of the logging instrument, and the second springs at both ends of the four support rods are fixedly connected between the slider and the connecting sleeve.

[0018] In the technical solution, four support rods are provided to facilitate shock absorption and buffering around the logging instrument, thereby improving the shock absorption effect of the logging instrument.

[0019] Preferably, the baffle is located between the mounting seat and the fixed plate, one end of the baffle is fixedly connected to one end of a third spring, the other end of the third spring is fixedly connected to the outer wall of the mounting seat, and the third spring is sleeved on the outer side of the inner sleeve.

[0020] In this technical solution, by providing the baffle and the third spring, the mounting seat slides along the inner sleeve and squeezes the third spring, and the third spring pushes the baffle to press against the fixed plate, thereby quickly suppressing the longitudinal vibration of the logging instrument.

[0021] Preferably, the sealing assembly includes an inner gasket, an outer gasket, a fixed sleeve, a sealing gasket, a sealing groove and a limiting plate, the inner gasket is arranged on the outer side of the inner sleeve, the outer gasket is arranged on the inner side of the outer sleeve, the fixed sleeve is threadedly connected to the outer side of the inner sleeve, the limiting plate is sleeved on the outer side of the inner sleeve and pressed against the outer side of the fixed plate, the sealing groove is arranged inside the limiting plate, and the sealing gasket is arranged in the sealing groove.

[0022] In the present technical solution, the sealing effect of the well logging instrument is improved by setting a fixed plate, an inner gasket and an outer gasket, and the fixed sleeve is used to push the limit plate against the sealing gasket, the sealing groove and the fixed plate, thereby strengthening the connection sealing between the fixed plate and the inner sleeve and the outer sleeve, ensuring that the well logging instrument is in a high sealing environment and improving the service life of the well logging instrument.

[0023] Preferably, the inner gasket and the outer gasket are respectively arranged on the inner side wall of the fixed plate and the outer side wall of the fixed plate, and the fixed plate, the fixed sleeve and the limiting plate are all surrounded between the inner sleeve and the outer sleeve.

[0024] In the technical solution, the sealing performance between the fixed disk and the inner sleeve and the outer sleeve is improved by arranging the inner gasket and the outer gasket on the inner side wall and the outer side wall of the fixed disk.

[0025] Preferably, the multi-phase compensation wireless resistivity logging instrument also includes a buffer assembly, which includes a fixed cylinder, a connecting cylinder, a fourth spring, a first rack, a fixed shaft and a gear, the fixed cylinder is installed on the outer wall of the mounting seat, the connecting cylinder is fixedly connected to the outer wall of the fixed plate, the fourth spring is fixedly connected between the top of the fixed cylinder and the inner wall of the connecting cylinder, the first rack is installed on the outer wall of the fixed cylinder, the fixed shaft is fixedly connected to the inner wall of the outer sleeve, and the gear is installed on the fixed shaft.

[0026] In this technical solution, when the vibration is too large, the mounting seat drives the fourth spring to compress or stretch through the fixed tube, the fixed tube and the connecting tube slide, the fixed tube drives the first rack to move up and down, and the first rack drives the meshing gear to rotate, thereby enhancing the seismic effect of the logging instrument.

[0027] Preferably, the buffer assembly also includes a fifth spring, a movable block, a buffer cylinder and a second rack, the buffer cylinder is fixedly connected to the bottom end of the fixed plate, the movable block is slidably connected to the inside of the buffer cylinder, the fifth spring is fixedly connected between the movable block and the inner wall of the buffer cylinder, and the second rack is slidably connected to the side wall of one end of the fixed cylinder.

[0028] In this technical solution, the gear drives the second rack and the first rack to move in opposite directions, the second rack drives the movable block to slide along the buffer tube, and the movable block drives the fifth spring to compress or stretch, thereby fully buffering the logging instrument and enhancing the shock absorption effect.

[0029] Preferably, the gear is rotatably connected between the first rack and the second rack via a fixed shaft, and two sides of the gear are respectively meshed and connected with the first rack and the second rack.

[0030] In the technical solution, by providing a fixed shaft, a gear, a first rack and a second rack, the first rack and the second rack are adapted to move in opposite directions under the action of the gear.

[0031] Preferably, the mounting seat is slidably connected between the outer sleeve and the inner sleeve, and the inner walls of the outer sleeve and the inner sleeve are both provided with annular grooves for matching and connecting the inner gasket and the outer gasket.

[0032] In the technical solution, the sealing effect of the well logging instrument is improved by arranging a fixed disk, an inner gasket and an outer gasket.

[0033] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0034] The positive and progressive effects of the utility model are:

[0035] The multi-phase compensation wireless resistivity logging instrument improves the shock absorption effect of the resistivity logging instrument in complex downhole environments through the structural design of the outer sleeve, inner sleeve, logging instrument, mounting seat, shock absorption assembly, baffle, fixed plate and sealing assembly, while improving the sealing effect of the resistivity logging instrument and enhancing the service life of the resistivity logging instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the multi-phase compensation wireless resistivity logging while drilling tool of the utility model.

[0037] Figure 2 This is a schematic diagram of the internal front view structure of the multi-phase compensation wireless resistivity logging while drilling tool of the utility model.

[0038] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0039] Figure 4 The utility model is a schematic diagram of the positions of the logging tool and the connecting sleeve in the multi-phase compensation wireless resistivity logging tool while drilling.

[0040] Description of Reference Numerals

[0041] 1. Outer sleeve; 2. Inner sleeve; 3. Logging instrument; 4. Mounting seat; 5. Shock-absorbing assembly; 51. Slide groove; 52. First spring; 53. Sliding block; 54. Support rod; 55. Connecting sleeve; 56. Second spring; 6. Baffle; 61. Third spring; 7. Fixed plate; 8. Sealing assembly; 81. Inner gasket; 82. Outer gasket; 83. Fixed sleeve; 84. Sealing gasket; 85. Sealing groove; 86. Limiting plate; 9. Buffer assembly; 91. Fixed cylinder; 92. Connecting cylinder; 93. Fourth spring; 94. First rack; 95. Fixed shaft; 96. Gear; 97. Fifth spring; 98. Movable block; 99. Buffer cylinder; 991. Second rack. DETAILED DESCRIPTION

[0042] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0043] Figures 1 to 4 As shown, a multi-phase compensation wireless resistivity logging tool while drilling according to an embodiment of the utility model comprises an outer sleeve 1 and an inner sleeve 2, wherein the inner sleeve 2 is arranged inside the outer sleeve 1, and further comprises:

[0044] A logging instrument 3, which is installed between the outer sleeve 1 and the inner sleeve 2;

[0045] A mounting seat 4, wherein the mounting seat 4 is disposed on the logging instrument 3, and the logging instrument 3 is slidably connected between the outer sleeve 1 and the inner sleeve 2 via the mounting seat 4;

[0046] A shock absorbing component 5, wherein the shock absorbing component 5 is arranged on the mounting seat 4;

[0047] a baffle 6, wherein the baffle 6 is slidably connected to the outer side of the inner sleeve 2;

[0048] A fixed plate 7, wherein the fixed plate 7 is disposed between the outer sleeve 1 and the inner sleeve 2;

[0049] The sealing component 8 is arranged between the mounting seat 4 and the fixing plate 7 .

[0050] Specifically, the provided shock-absorbing component 5 facilitates longitudinal and lateral shock absorption of the logging instrument 3 , and the shock-absorbing effect is good. The provided sealing component 8 enhances the sealing performance of the logging instrument 3 inside the drill bit, thereby increasing the service life of the logging instrument 3 .

[0051] like Figures 1 to 4As shown, the shock absorbing assembly 5 includes a slide groove 51, a first spring 52, a slider 53, a support rod 54, a connecting sleeve 55 and a second spring 56. The slide groove 51 is opened on one side of the inner part of the mounting seat 4, the slider 53 is slidably connected to the slide groove 51, the support rod 54 is fixedly connected between the two sliders 53, the first spring 52 is fixedly connected between the inner wall of the slide groove 51 and the slider 53, the connecting sleeve 55 is slidably connected to the support rod 54, the second spring 56 is sleeved on both ends of the support rod 54, and one end of the connecting sleeve 55 is fixedly connected to the outer wall of one end of the logging instrument 3.

[0052] Specifically, when the drill bit encounters lateral vibration and longitudinal vibration, the logging instrument 3 slides along the support rod 54 inside the mounting seat 4 through the connecting sleeve 55 in the shock absorbing assembly 5, and the connecting sleeve 55 drives the second spring 56 to compress or stretch, thereby buffering and shock absorbing the longitudinal vibration encountered by the logging instrument 3, thereby reducing the impact of the longitudinal vibration on the logging instrument 3, and the support rod 54 drives the slider 53 to slide along the slide groove 51, and the slider 53 compresses or stretches the first spring 52, thereby shock absorbing the lateral vibration of the logging instrument 3 and improving the protection of the logging instrument 3.

[0053] like Figures 1 to 4 As shown, there are four support rods 54 , which surround the outside of the logging instrument 3 , and second springs 56 at both ends of the four support rods 54 are fixedly connected between the slider 53 and the connecting sleeve 55 .

[0054] Specifically, the four support rods 54 are provided to facilitate shock absorption and buffering around the well logging instrument 3 , thereby improving the shock absorption effect of the well logging instrument 3 .

[0055] like Figures 1 to 3 As shown, the baffle 6 is located between the mounting seat 4 and the fixed plate 7, one end of the baffle 6 is fixedly connected to one end of a third spring 61, the other end of the third spring 61 is fixedly connected to the outer wall of the mounting seat 4, and the third spring 61 is sleeved on the outer side of the inner sleeve 2.

[0056] Specifically, through the baffle 6 and the third spring 61 , the mounting seat 4 slides along the inner sleeve 2 and squeezes the third spring 61 , and the third spring 61 pushes the baffle 6 against the fixing plate 7 , thereby quickly suppressing the longitudinal vibration of the logging instrument 3 .

[0057] like Figures 1 to 3As shown, the sealing assembly 8 includes an inner gasket 81, an outer gasket 82, a fixing sleeve 83, a sealing gasket 84, a sealing groove 85 and a limiting plate 86. The inner gasket 81 is arranged on the outer side of the inner sleeve 2, the outer gasket 82 is arranged on the inner side of the outer sleeve 1, the fixing sleeve 83 is threadedly connected to the outer side of the inner sleeve 2, the limiting plate 86 is sleeved on the outer side of the inner sleeve 2 and pressed against the outer side of the fixing plate 7, the sealing groove 85 is arranged inside the limiting plate 86, and the sealing gasket 84 is arranged in the sealing groove 85.

[0058] Specifically, the sealing effect of the logging instrument 3 is improved by setting the fixed plate 7, the inner gasket 81 and the outer gasket 82, and the fixed sleeve 83 is used to push the limit plate 86 against the sealing gasket 84, the sealing groove 85 and the fixed plate 7, thereby strengthening the connection sealing between the fixed plate 7 and the inner sleeve 2 and the outer sleeve 1, ensuring that the logging instrument 3 is in a high sealing environment, thereby improving the service life of the logging instrument 3.

[0059] like Figures 2 to 3 As shown, the inner gasket 81 and the outer gasket 82 are respectively arranged on the inner wall of the fixing plate 7 and the outer wall of the fixing plate 7 , and the fixing plate 7 , the fixing sleeve 83 and the limiting plate 86 are all surrounded between the inner sleeve 2 and the outer sleeve 1 .

[0060] Specifically, the inner gasket 81 and the outer gasket 82 provided on the inner and outer walls of the fixed plate 7 improve the sealing performance between the fixed plate and the inner sleeve 2 and the outer sleeve 1 .

[0061] like Figures 2 to 3 As shown, the multi-phase compensation wireless resistivity logging instrument 3 also includes a buffer assembly 9, which includes a fixed cylinder 91, a connecting cylinder 92, a fourth spring 93, a first rack 94, a fixed shaft 95 and a gear 96. The fixed cylinder 91 is installed on the outer wall of the mounting seat 4, the connecting cylinder 92 is fixedly connected to the outer wall of the fixed plate 7, the fourth spring 93 is fixedly connected between the top of the fixed cylinder 91 and the inner wall of the connecting cylinder 92, the first rack 94 is installed on the outer wall of the fixed cylinder 91, the fixed shaft 95 is fixedly connected to the inner wall of the outer sleeve 1, and the gear 96 is installed on the fixed shaft 95.

[0062] Specifically, when the vibration is too large, the mounting seat 4 drives the fourth spring 93 to compress or stretch through the fixed tube 91, the fixed tube 91 and the connecting tube 92 slide, the fixed tube 91 drives the first rack 94 to move up and down, and the first rack 94 drives the meshing gear 96 to rotate, thereby enhancing the anti-seismic effect of the logging instrument 3.

[0063] like Figures 1 to 3As shown, the buffer assembly 9 also includes a fifth spring 97, a movable block 98, a buffer cylinder 99 and a second rack 991. The buffer cylinder 99 is fixedly connected to the bottom end of the fixed plate 7, the movable block 98 is slidably connected to the inside of the buffer cylinder 99, the fifth spring 97 is fixedly connected between the movable block 98 and the inner wall of the buffer cylinder 99, and the second rack 991 is slidably connected to the side wall of one end of the fixed cylinder 91.

[0064] Specifically, the gear 96 drives the second rack 991 and the first rack 94 to move in opposite directions, the second rack 991 drives the movable block 98 to slide along the buffer tube 99, and the movable block 98 drives the fifth spring 97 to compress or stretch, thereby fully buffering the logging instrument 3 and enhancing the shock absorption effect.

[0065] like Figures 1 to 3 As shown, the gear 96 is rotatably connected between the first rack 94 and the second rack 991 via a fixed shaft 95, and two sides of the gear 96 are respectively meshed and connected with the first rack 94 and the second rack 991.

[0066] Specifically, by providing the fixed shaft 95 , the gear 96 , the first rack 94 and the second rack 991 , the first rack 94 and the second rack 991 can be adapted to move in opposite directions under the action of the gear 96 .

[0067] like Figures 1 to 3 As shown, the mounting seat 4 is slidably connected between the outer sleeve 1 and the inner sleeve 2 , and the inner walls of the outer sleeve 1 and the inner sleeve 2 are both provided with annular grooves for matching and connecting the inner gasket 81 and the outer gasket 82 .

[0068] Specifically, the fixing plate 7 , the inner gasket 81 and the outer gasket 82 are provided to achieve a sealing effect on the logging tool 3 .

[0069] The use principle of the present application is as follows: during use, when the drill bit encounters lateral vibration and longitudinal vibration, the logging instrument 3 slides along the support rod 54 inside the mounting seat 4 through the connecting sleeve 55 in the shock absorbing assembly 5, and the connecting sleeve 55 drives the second spring 56 to compress or stretch, thereby buffering and shock absorbing the longitudinal vibration encountered by the logging instrument 3, thereby reducing the influence of the longitudinal vibration on the logging instrument 3, and the support rod 54 drives the slider 53 to slide along the slide groove 51, and the slider 53 compresses or stretches the first spring 52, thereby shock absorbing the lateral vibration of the logging instrument 3 and improving the protection of the logging instrument 3. When the vibration is too large, the mounting seat 4 slides along the inner sleeve 2 and the outer sleeve 1, and the mounting seat 4 slides along the inner sleeve 2 and squeezes the third spring 61, and the third spring 61 pushes the baffle 6 to press against the fixed plate 7, thereby quickly suppressing the longitudinal vibration of the logging instrument 3. The fixed tube 91 drives the fourth spring 93 to compress or stretch, the fixed tube 91 and the connecting tube 92 slide, the fixed tube 91 drives the first rack 94 to move up and down, the first rack 94 drives the meshing gear 96 to rotate, and at the same time, the gear 96 drives the second rack 991 and the first rack 94 to move in the opposite direction, the second rack 991 drives the movable block 98 to slide along the buffer tube 99, and the movable block 98 drives the fifth spring 97 to compress or stretch, thereby fully buffering the well logging instrument 3, and through the set fixed plate 7, inner gasket 81 and outer gasket 82, the sealing effect of the well logging instrument 3 is improved, and the set fixed sleeve 83 pushes the limit plate 86 to press against the sealing gasket 84, the sealing groove 85 and the fixed plate 7, thereby strengthening the connection sealing between the fixed plate 7 and the inner sleeve 2 and the outer sleeve 1, ensuring that the well logging instrument 3 is in a high sealing environment.

[0070] The utility model is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the utility model, but these changes and modifications are within the protection scope of the utility model.

Claims

1. A multi-phase compensation wireless resistivity logging while drilling tool, comprising an outer sleeve (1) and an inner sleeve (2), wherein the inner sleeve (2) is arranged inside the outer sleeve (1), characterized in that: Also includes: A well logging instrument (3), the well logging instrument (3) being installed between the outer sleeve (1) and the inner sleeve (2); A mounting seat (4), wherein the mounting seat (4) is arranged on the well logging instrument (3), and the well logging instrument (3) is slidably connected between the outer sleeve (1) and the inner sleeve (2) via the mounting seat (4); A shock absorbing component (5), wherein the shock absorbing component (5) is arranged on the mounting seat (4); a baffle (6), the baffle (6) being slidably connected to the outer side of the inner sleeve (2); A fixed plate (7), wherein the fixed plate (7) is arranged between the outer sleeve (1) and the inner sleeve (2); A sealing component (8), wherein the sealing component (8) is arranged between the mounting seat (4) and the fixing plate (7).

2. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 1, characterized in that: The shock absorbing assembly (5) comprises a slide groove (51), a first spring (52), a slider (53), a support rod (54), a connecting sleeve (55) and a second spring (56); the slide groove (51) is opened on one side of the inner part of the mounting seat (4); the slider (53) is slidably connected to the slide groove (51); the support rod (54) is fixedly connected between the two sliders (53); the first spring (52) is fixedly connected between the inner wall of the slide groove (51) and the slider (53); the connecting sleeve (55) is slidably connected to the support rod (54); the second spring (56) is sleeved on both ends of the support rod (54); and one end of the connecting sleeve (55) is fixedly connected to the outer wall of one end of the well logging instrument (3).

3. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 2, characterized in that: The number of the support rods (54) is four, and the four support rods (54) surround the outside of the logging instrument (3). The second springs (56) at both ends of the four support rods (54) are fixedly connected between the slider (53) and the connecting sleeve (55).

4. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 1, characterized in that: The baffle (6) is located between the mounting seat (4) and the fixed plate (7); one end of the baffle (6) is fixedly connected to one end of a third spring (61); the other end of the third spring (61) is fixedly connected to the outer wall of the mounting seat (4); and the third spring (61) is sleeved on the outer side of the inner sleeve (2).

5. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 1, characterized in that: The sealing assembly (8) comprises an inner gasket (81), an outer gasket (82), a fixing sleeve (83), a sealing gasket (84), a sealing groove (85) and a limiting plate (86); the inner gasket (81) is arranged on the outer side of the inner sleeve (2); the outer gasket (82) is arranged on the inner side of the outer sleeve (1); the fixing sleeve (83) is threadedly connected to the outer side of the inner sleeve (2); the limiting plate (86) is sleeved on the outer side of the inner sleeve (2) and pressed against the outer side of the fixing plate (7); the sealing groove (85) is arranged inside the limiting plate (86); and the sealing gasket (84) is arranged inside the sealing groove (85).

6. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 5, characterized in that: The inner gasket (81) and the outer gasket (82) are respectively arranged on the inner side wall of the fixed plate (7) and the outer side wall of the fixed plate (7); the fixed plate (7), the fixed sleeve (83) and the limiting plate (86) are all surrounded between the inner sleeve (2) and the outer sleeve (1).

7. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 1, characterized in that: The multi-phase compensation wireless resistivity logging instrument (3) further comprises a buffer assembly (9), wherein the buffer assembly (9) comprises a fixed cylinder (91), a connecting cylinder (92), a fourth spring (93), a first rack (94), a fixed shaft (95) and a gear (96), wherein the fixed cylinder (91) is mounted on the outer wall of the mounting seat (4), the connecting cylinder (92) is fixedly connected to the outer wall of the fixed plate (7), the fourth spring (93) is fixedly connected between the top of the fixed cylinder (91) and the inner wall of the connecting cylinder (92), the first rack (94) is mounted on the outer wall of the fixed cylinder (91), the fixed shaft (95) is fixedly connected to the inner wall of the outer sleeve (1), and the gear (96) is mounted on the fixed shaft (95).

8. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 7, characterized in that: The buffer assembly (9) also includes a fifth spring (97), a movable block (98), a buffer tube (99) and a second rack (991); the buffer tube (99) is fixedly connected to the bottom end of the fixed plate (7); the movable block (98) is slidably connected to the inside of the buffer tube (99); the fifth spring (97) is fixedly connected between the movable block (98) and the inner wall of the buffer tube (99); and the second rack (991) is slidably connected to a side wall at one end of the fixed tube (91).

9. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 7, characterized in that: The gear (96) is rotatably connected between the first rack (94) and the second rack (991) via a fixed shaft (95), and two sides of the gear (96) are respectively meshed and connected with the first rack (94) and the second rack (991).

10. The multi-phase compensation wireless resistivity logging while drilling tool according to claim 1, characterized in that: The mounting seat (4) is slidably connected between the outer sleeve (1) and the inner sleeve (2); the inner walls of the outer sleeve (1) and the inner sleeve (2) are both provided with an annular groove for matching and connecting the inner gasket (81) and the outer gasket (82).

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