Centralizing device of directional well measurement-while-drilling instrument

Abstract

The utility model relates to the technical field of oil field exploration, in particular to a centering device for a directional well measurement-while-drilling instrument, which comprises a central shaft, a sliding frame and a top plate assembly, the sliding frame is sleeved on the periphery of the central shaft, one end of the central shaft is connected with the top plate assembly through a bolt, and the other end of the central shaft is connected with a bottom plate through a bolt. Righting assemblies are connected to the two sides of the sliding frame in a sliding mode; sliding grooves are formed in the two sides of the interior of the sliding frame, righting assemblies are slidably connected into the sliding grooves, inflatable cushions are connected to the positions, located on the inner sides of the righting assemblies, in the sliding grooves in a gluing mode, and reset springs are arranged on the positions, located on the peripheries of the righting assemblies, in the sliding grooves in a sleeving mode. The centralizing range adjusting mechanism is additionally arranged, and the position of the centralizing mechanism is adjusted according to the actual internal space environment of the directional well, so that different working environments and using requirements are met, using flexibility and centralizing stability are improved, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil field exploration, in particular to a directional well drilling measurement instrument straightening device. Background Art

[0002] Directional drilling technology is one of the most advanced drilling technologies in the field of oil exploration and development in the world today. It is a drilling technology that uses special downhole tools, measuring instruments and process technologies to effectively control the wellbore trajectory, so that the drill bit can drill in a specific direction to reach the predetermined underground target. In order to ensure that the while-drilling measurement instrument is centered and avoid affecting the accuracy of the measurement, the measuring instrument needs to be assisted by a straightening device.

[0003] At present, when using a righting device, there is a lack of a righting range adjustment mechanism. Usually, after entering a directional well, it is necessary to use spring force to push the righting mechanism to adapt to the internal environment of the directional well. However, when the space in the directional well is too large, due to the limited spring force, it is difficult to maintain a stable righting effect during actual use. Therefore, a righting device for a directional well while-drilling measurement instrument is proposed to increase a righting range adjustment mechanism, adjust the position of the righting mechanism according to the actual internal space environment of the directional well, thereby adapting to different working environments and use requirements, improving the flexibility of use and the stability of the righting, and improving the use effect. Summary of the invention

[0004] In view of the problems in the prior art, the utility model provides a directional well drilling measurement instrument straightening device, which adjusts the position of the straightening mechanism according to the actual internal space environment of the directional well, so as to adapt to different working environments and usage requirements.

[0005] The utility model solves the technical problem by adopting a technical solution of a directional well drilling measurement instrument straightening device, comprising a central shaft, a sliding frame and a top plate assembly, wherein the sliding frame is sleeved on the periphery of the central shaft, one end of the central shaft is connected to the top plate assembly by bolts, and the other end of the central shaft is connected to the bottom plate by bolts, and both sides of the sliding frame are slidably connected with straightening assemblies;

[0006] Sliding grooves are provided on both sides of the sliding frame, and the sliding grooves are slidably connected to the straightening components. An inflatable cushion is glued to the inner side of the straightening components in the sliding grooves, and a return spring is provided on the outer sleeve of the straightening components in the sliding grooves.

[0007] By adopting the above technical solution, the use position and range of the straightening assembly can be controlled and adjusted by utilizing deformation and elastic force, thereby adapting to different directional well working environments and improving the flexibility of use.

[0008] Specifically, the top plate assembly includes a top plate, and the center axis is connected to the top plate by bolts, and extension plates are slidably connected on both sides of the top plate. A slideway is opened on the inner side of the top plate, and a slider is slidably connected in the slideway, and the slider is connected to the extension plate by bolts, and an air cushion strip is gluingly connected to the outer side of the slider in the slideway.

[0009] By adopting the above technical solution, it is convenient to add an auxiliary installation mechanism to adapt to measuring instruments of different sizes.

[0010] Specifically, a guide groove is opened in the sliding frame, and the guide groove is connected to the air inlet end of the inflatable cushion through a hose, and the outer surface of the sliding frame is threadedly connected to an air nozzle through a reserved groove, and the air outlet end of the air nozzle is connected to the guide groove.

[0011] By adopting the above technical solution, it is convenient to connect an external air pump to perform inflation and deflation operations.

[0012] Specifically, the top of the extension plate is connected to the limit plate by welding.

[0013] By adopting the above technical solution, it is convenient to improve the stability of instrument installation by clamping.

[0014] Specifically, the straightening assembly includes a telescopic sleeve, one side of the telescopic sleeve is sleeved and connected to a telescopic rod, one end of the telescopic rod is connected to a rotating seat by welding, and one side of the rotating seat is rotatably connected to a roller via a rotating shaft.

[0015] By adopting the above technical solution, it is convenient to form a straightening mechanism to assist in straightening the measuring instrument.

[0016] Specifically, a shock-absorbing spring is installed on the inner side of the telescopic rod in the telescopic sleeve through a spring seat.

[0017] By adopting the above technical solution, it is convenient to reduce the impact on the straightening component.

[0018] Specifically, compression springs are sleeved on the top and bottom of the sliding frame around the periphery of the central axis.

[0019] By adopting the above technical solution, the stability of the sliding frame during use can be improved.

[0020] Beneficial effects of the utility model:

[0021] The utility model discloses a directional well drilling measurement instrument straightening device, which can utilize deformation and elastic force to push through the central axis, sliding frame, sliding groove, inflatable cushion and reset spring, and adjust the use position and range of the straightening component according to actual use requirements and working environment, thereby improving the flexibility of use, making the device more applicable, and also facilitating improving the straightening effect.

[0022] The utility model discloses a directional well drilling measurement instrument straightening device, which can add auxiliary installation mechanism by means of the top plate, extension plate, slideway and air cushion strip, and can not only use deformation clamping to quickly limit the drilling measurement instrument, but also is suitable for a variety of drilling measurement instruments of different sizes, and is more flexible and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic cross-sectional structural diagram of the sliding frame of the utility model;

[0026] Figure 3 This is a schematic cross-sectional structural diagram of a top plate assembly of the utility model;

[0027] Figure 4 This is a schematic cross-sectional structural diagram of the righting assembly of the utility model;

[0028] In the figure: 1. central axis; 2. sliding frame; 201. sliding groove; 202. inflatable cushion; 203. reset spring; 204. guide groove; 3. top plate assembly; 301. top plate; 302. extension plate; 303. slideway; 304. slider; 305. air cushion strip; 306. limit plate; 4. bottom plate; 5. straightening assembly; 501. telescopic sleeve; 502. telescopic rod; 503. rotating seat; 504. roller; 505. shock-absorbing spring; 6. air nozzle; 7. compression spring. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] In order to adjust the position of the straightening mechanism according to the actual internal space environment of the directional well, so as to adapt to different working environments and usage requirements, such as Figure 1-3 As shown, the utility model discloses a directional well drilling measurement instrument straightening device, comprising a central shaft 1, a sliding frame 2 and a top plate assembly 3, wherein the sliding frame 2 is sleeved on the periphery of the central shaft 1, one end of the central shaft 1 is connected to the top plate assembly 3 by bolts, and the other end of the central shaft 1 is connected to the bottom plate 4 by bolts, and both sides of the sliding frame 2 are slidably connected to the straightening assembly 5;

[0031] Sliding grooves 201 are provided on both sides of the sliding frame 2, and the sliding grooves 201 are slidably connected to the straightening component 5. An inflatable cushion 202 is glued to the inner side of the straightening component 5 in the sliding groove 201, and a return spring 203 is provided on the outer periphery of the straightening component 5 in the sliding groove 201.

[0032] When in use, the sliding groove 201, the inflatable cushion 202 and the return spring 203 can utilize deformation and elastic force to assist in controlling and adjusting the use position of the straightening assembly 5, thereby adapting to different internal environments of directional wells and improving the flexibility of use and the stability of straightening.

[0033] In order to improve the flexibility and stability of the measuring instrument installation, for example, Figure 1 , Figure 3 As shown, the utility model also includes that the top plate assembly 3 includes a top plate 301, and the central axis 1 is connected to the top plate 301 by bolts, and the two sides of the top plate 301 are slidably connected with extension plates 302, and a slideway 303 is opened on the inner side of the top plate 301, and a slider 304 is slidably connected in the slideway 303, and the slider 304 is connected to the extension plate 302 by bolts, and an air cushion strip 305 is connected to the outer side of the slider 304 in the slideway 303 by gluing.

[0034] When in use, the deformation caused by the inflation of the air cushion strip 305 can push the slider 304 and the extension plate 302 to slide inward, thereby adapting to different sizes of measuring instruments and improving the flexibility of fixed installation. Both sides of the top plate 301 are threadedly connected to the second air nozzle through reserved grooves.

[0035] For example, Figure 1 , Figure 2 As shown, the utility model also includes that a guide groove 204 is opened in the sliding frame 2, and the guide groove 204 is connected to the air inlet end of the inflatable cushion 202 through a hose, and the outer surface of the sliding frame 2 is threadedly connected to an air nozzle 6 through a reserved groove, and the air outlet end of the air nozzle 6 is connected to the guide groove 204.

[0036] When in use, the guide groove 204 and the air nozzle 6 facilitate connection to an external air pump device to inflate and deflate the inflatable cushion 202 .

[0037] For example, Figure 3 As shown, the utility model further includes that the top of the extension plate 302 is connected to the limiting plate 306 by welding.

[0038] When in use, the limiting plate 306 is used to conveniently clamp the while-drilling measurement instrument and perform auxiliary limiting processing on it.

[0039] For example, Figure 4As shown, the utility model also includes that the straightening assembly 5 includes a telescopic sleeve 501, one side of the telescopic sleeve 501 is sleeved and connected to the telescopic rod 502, one end of the telescopic rod 502 is connected to the rotating seat 503 by welding, and one side of the rotating seat 503 is rotatably connected to the roller 504 via a rotating shaft.

[0040] When in use, the telescopic sleeve 501 and the telescopic rod 502 are connected by sleeves, so that the telescopic sleeve 501 and the telescopic rod 502 can be slidably displaced in the directional well to perform a straightening action.

[0041] For example, Figure 4 As shown, the utility model also includes that a shock absorbing spring 505 is installed on the inner side of the telescopic rod 502 in the telescopic sleeve 501 through a spring seat.

[0042] When in use, the shock absorbing spring 505 is used to improve the working stability of the straightening assembly 5 .

[0043] For example, Figure 1 As shown, the utility model also includes that compression springs 7 are sleeved on the top and bottom of the sliding frame 2 on the periphery of the central shaft 1 .

[0044] When in use, the spring 7 is compressed to improve the stability of the sliding frame 2 .

[0045] When the utility model is used, the operator first places the drilling measurement instrument on the top plate 301, connects the external air pump device through the second air nozzle, inflates the air cushion strip 305, and uses the deformation caused by the inflation of the air cushion strip 305 to push the slider 304 and the extension plate 302 to slide quickly inward, so that the measuring instrument is clamped by the limit plate 306 for rapid limit processing, and then the measuring instrument is fixedly connected to the top plate 301, which can not only improve the stability of the installation operation, but also adjust the use range of the top plate assembly 3 according to the actual size of the measuring instrument, making the use more flexible and reliable;

[0046] Then, according to the actual size of the directional well, the air nozzle 6 is connected to the external air pump equipment, and the inflatable cushion 202 is inflated by the air pump. The deformation caused by the inflation of the inflatable cushion 202 is used to push the telescopic sleeve 501 to slide outward. When the inflatable cushion 202 is deflated, the elastic force of the return spring 203 can be used to push the telescopic sleeve 501 back into the sliding groove 201. The above operation can adjust the use position and range of the straightening component 5, which can not only increase the flexibility of the device, but also improve the straightening effect for different directional well working environments.

[0047] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A directional well drilling measurement instrument straightening device, characterized in that: The invention comprises a central shaft (1), a sliding frame (2) and a top plate assembly (3); the sliding frame (2) is sleeved on the periphery of the central shaft (1); one end of the central shaft (1) is connected to the top plate assembly (3) via bolts; the other end of the central shaft (1) is connected to a bottom plate (4) via bolts; and both sides of the sliding frame (2) are slidably connected to straightening assemblies (5); Sliding grooves (201) are provided on both sides of the sliding frame (2), and a straightening component (5) is slidably connected in the sliding groove (201); an inflatable cushion (202) is connected to the inner side of the straightening component (5) in the sliding groove (201) by gluing; and a return spring (203) is provided on the outer periphery of the straightening component (5) in the sliding groove (201).

2. The device for straightening a directional well while drilling measurement instrument according to claim 1, characterized in that: The top plate assembly (3) comprises a top plate (301), and the central axis (1) is connected to the top plate (301) by bolts, and both sides of the top plate (301) are slidably connected to extension plates (302), a slideway (303) is provided on the inner side of the top plate (301), a slider (304) is slidably connected in the slideway (303), and the slider (304) is connected to the extension plate (302) by bolts, and an air cushion strip (305) is connected to the outer side of the slider (304) in the slideway (303) by gluing.

3. The device for straightening a directional well while drilling measurement instrument according to claim 1, characterized in that: A guide groove (204) is provided in the sliding frame (2), and the guide groove (204) is connected to the air inlet end of the inflatable cushion (202) via a hose; an air nozzle (6) is threadedly connected to the outer surface of the sliding frame (2) via a reserved groove, and the air outlet end of the air nozzle (6) is connected to the guide groove (204).

4. The device for straightening a directional well while drilling measurement instrument according to claim 2, characterized in that: The top of the extension plate (302) is connected to the limiting plate (306) by welding.

5. The device for straightening a directional well while drilling measurement instrument according to claim 1, characterized in that: The straightening assembly (5) comprises a telescopic sleeve (501), one side of the telescopic sleeve (501) is sleeved and connected to a telescopic rod (502), one end of the telescopic rod (502) is connected to a rotating seat (503) by welding, and one side of the rotating seat (503) is rotatably connected to a roller (504) via a rotating shaft.

6. The device for straightening a directional well while drilling measurement instrument according to claim 5, characterized in that: A shock absorbing spring (505) is installed inside the telescopic sleeve (501) and located on the inner side of the telescopic rod (502) via a spring seat.

7. The device for straightening a directional well while drilling measurement instrument according to claim 1, characterized in that: Compression springs (7) are sleeved on the top and bottom of the sliding frame (2) on the periphery of the central shaft (1).

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