A logging pipe clamping and straightening mechanism

Abstract

This invention discloses a logging probe clamping and straightening mechanism, belonging to the field of logging probe technology. It includes a base component, a correction assembly, a push rod mechanism, and a stacking assembly. The base component includes a main cylinder and an inner pipeline. Several correction assemblies are mounted on the main cylinder. Each correction assembly includes a correction arm housing, which is circumferentially arranged on the outer wall of the main cylinder. The push rod mechanism includes a guide rod, a piston, and a rotating arm. The guide rod is mounted inside the correction arm housing, with a piston at one end and a rotating arm at the other. The stacking assembly includes several stacked secondary cylinders, each equipped with several correction assemblies. This invention, by sequentially stacking and assembling several staggered secondary cylinders within the main cylinder, allows the push rod mechanism to move against the inner wall of the wellbore when the logging probe is inserted into the wellbore. This achieves straightening and clamping of the logging probe through the correction assemblies arranged on the main and secondary cylinders. The operation is convenient and easy to use.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of logging probe, and particularly relates to a logging probe clamping and righting mechanism. BACKGROUND

[0002] The logging probe is a device for checking the technical condition of the oil well pipe column, and is used for measuring the pipe column structure by using a magnetic positioner logging instrument, measuring the casing inner diameter by using a micro well diameter instrument, measuring casing deformation by using a two-way well diameter instrument, measuring corrosion and perforation position by using a magnetic logging instrument, and comprehensively checking the technical condition of the oil pipe and the casing, so that the inner diameter, corrosion, perforation, perforation hole, cracking, thickening and other data of the oil pipe or the casing in the oil well can be calculated.

[0003] The existing logging probe is prone to tilting and approaching to the inner wall of the shaft when measuring in the shaft, because the shaft is not necessarily a standard linear shaft, so that the position of the probe descending is affected, and the measuring accuracy is affected, and therefore a mechanism capable of limiting the descending position of the logging probe is required. SUMMARY

[0004] In view of the problems in the prior art, the purpose of the embodiments of the present application is to provide a logging probe clamping and righting mechanism to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] The logging probe clamping and righting mechanism comprises a base member, the base member comprises a main cylinder and an inner pipe line, a plurality of correction assemblies are fixedly assembled on the outer wall surface of the main cylinder, a plurality of inner pipe lines are arranged on the inner wall of the main cylinder, and the number of the inner pipe lines is matched with the number of the correction assemblies;

[0007] The correction assembly comprises a correction arm shell, an oil pressure cavity, a movable cavity and a communication hole, the correction arm shell is circumferentially arranged on the outer wall surface of the main cylinder and fixedly connected with the main cylinder, the oil pressure cavity and the movable cavity are arranged in the correction arm shell, a U-shaped groove is further arranged at one end of the movable cavity, one end of the communication hole is in communication with the oil pressure cavity, and the other end is in communication with the inner pipe line;

[0008] The pull rope assembly comprises an elastic wire reel and a pull rope, two groups of the elastic wire reels are arranged on both sides of the U-shaped groove, and the pull rope is elastically and rotatably arranged in the elastic wire reel;

[0009] The top rod mechanism comprises a guide rod, a piston and rotating arms, the guide rod is slidingly assembled between an oil pressure cavity and a movable cavity, one end of the guide rod is further fixedly assembled with the piston, the piston is arranged in the oil pressure cavity, the other end of the guide rod is further rotatably assembled with two groups of rotating arms, the two groups of rotating arms are respectively connected with two groups of pull ropes, and the two groups of rotating arms are mirror image arranged.

[0010] The nested assembly comprises a secondary cylinder, an outer groove and an inner convex tube, a plurality of secondary cylinders are sequentially nested in a primary cylinder, one end of the secondary cylinder is circumferentially assembled with a plurality of correction assemblies, a plurality of outer grooves are arranged on the outer wall surface of the secondary cylinder, and a plurality of inner convex tubes are arranged on the inner wall surface of the secondary cylinder.

[0011] The well logging probe is assembled in the secondary cylinder with the smallest diameter among the plurality of secondary cylinders.

[0012] As a further scheme of the present application, the number of correction assemblies arranged on the primary cylinder and the secondary cylinder is at least three.

[0013] As a further scheme of the present application, the plurality of correction arm housings are assembled on the same side of the primary cylinder and the secondary cylinder, and the assembly height of the correction arm housing is greater than the end plane height of the primary cylinder and the secondary cylinder.

[0014] As a further scheme of the present application, the plurality of correction assemblies assembled on the primary cylinder and the plurality of correction assemblies assembled on the secondary cylinder are arranged in a staggered manner.

[0015] As a further scheme of the present application, the outer grooves on the outer wall surface of the secondary cylinder and the inner convex tubes on the inner wall surface of the secondary cylinder are arranged in a staggered manner, and the inner convex tubes are in communication with the plurality of correction assemblies assembled on the secondary cylinder.

[0016] As a further scheme of the present application, the top rod mechanism further comprises a limiting block, an anti-skid groove, an elastic member and a return spring, the limiting block is arranged at one end of the guide rod to limit the sliding track of the guide rod, the anti-skid groove is assembled at one end of the rotating arm, the elastic member elastically connects the two groups of rotating arms, and the return spring is arranged in the oil pressure cavity and sleeved on the guide rod.

[0017] As a further scheme of the present application, the diameters of the plurality of secondary cylinders increase sequentially, and the diameters of the plurality of secondary cylinders are all smaller than the inner diameter of the primary cylinder, so that the plurality of secondary cylinders are nested on one side of the primary cylinder.

[0018] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0019] The application can realize the righting and clamping of the logging probe by the righting assembly arranged on the main cylinder and the auxiliary cylinder when the logging probe is sent into the shaft, and the top rod mechanism in the main cylinder is abutted on the inner wall of the shaft, thereby realizing the righting and clamping of the logging probe. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a plan view of the logging probe clamping and righting mechanism provided in an embodiment of the application.

[0021] Figure 2 The figure is a structural schematic view of the main cylinder in the logging probe clamping and righting mechanism provided in an embodiment of the application.

[0022] Figure 3 The figure is a structural schematic view of the mark A in the logging probe clamping and righting mechanism provided in an embodiment of the application.

[0023] Figure 4 The figure is a structural schematic view of the top rod mechanism in the logging probe clamping and righting mechanism provided in an embodiment of the application.

[0024] Figure 5 The figure is a three-dimensional structural schematic view of the nested assembly in the logging probe clamping and righting mechanism provided in an embodiment of the application.

[0025] The figure is a three-dimensional structural schematic view of the nested assembly in the logging probe clamping and righting mechanism provided in an embodiment of the application. DETAILED DESCRIPTION

[0026] In order to make the structural features and effects of the application clearer, the application will be described in detail below with reference to the drawings and specific embodiments.

[0027] Please refer to Figures 1-5The well logging probe clamping and righting mechanism in an embodiment of the present application comprises a base member 1, the base member 1 comprises a main cylinder 101 and an inner pipeline 102, a plurality of correction assemblies 2 are fixedly assembled on the outer wall surface of the main cylinder 101, a plurality of inner pipelines 102 are arranged on the inner wall of the main cylinder 101, and the number of the inner pipelines 102 is matched with the number of the correction assemblies 2; the correction assembly 2 comprises a correction arm shell 201, an oil pressure cavity 202, a movable cavity 203 and a communication hole 206, the correction arm shell 201 is circumferentially arranged on the outer wall surface of the main cylinder 101 and fixedly connected with the main cylinder 101, the oil pressure cavity 202 and the movable cavity 203 are arranged in the correction arm shell 201, a U-shaped groove 204 is further arranged at one end of the movable cavity 203, one end of the communication hole 206 is in communication with the oil pressure cavity 202 and the other end is in communication with the inner pipeline 102; the pull rope assembly 3 comprises an elastic reel 301 and a pull rope 302, two groups of the elastic reels 301 are arranged on both sides of the U-shaped groove 204, and the pull rope 302 is elastically and rotatably assembled in the elastic reel 301; the jacking rod mechanism 4 comprises a guide rod 401, a piston 402 and a rotating arm 404, the guide rod 401 is slidingly assembled between the oil pressure cavity 202 and the movable cavity 203, the piston 402 is further fixedly assembled at one end of the guide rod 401, the guide rod 401 is rotatably assembled with two groups of the rotating arms 404 at the other end, the two groups of the rotating arms 404 are respectively connected with the two groups of the pull ropes 302, and the two groups of the rotating arms 404 are mirror image arranged; the nested assembly 5 comprises a secondary cylinder 501, an outer groove 502 and an inner convex tube 503, a plurality of the secondary cylinders 501 are sequentially nested in the main cylinder 101, one end of the secondary cylinder 501 is circumferentially assembled with a plurality of correction assemblies 2, a plurality of outer grooves 502 are arranged on the outer wall surface of the secondary cylinder 501, a plurality of inner convex tubes 503 are arranged on the inner wall surface of the secondary cylinder 501, the diameters of the plurality of secondary cylinders 501 are sequentially increased, and the diameters of the plurality of secondary cylinders 501 are all smaller than the inner diameter of the main cylinder 101, so that the plurality of secondary cylinders 501 are nested on one side of the main cylinder 101; and the well logging probe 6 is assembled in the secondary cylinder 501 with the smallest diameter among the plurality of secondary cylinders 501.

[0028] In actual application, when the well logging probe clamping and righting mechanism is used, the well logging probe 6 is assembled in the smallest diameter of the plurality of auxiliary cylinders 501, and because the plurality of auxiliary cylinders 501 are nested on one side of the main cylinder 101, the plurality of auxiliary cylinders 501 can be sequentially extended outward along the inner wall of the main cylinder 101. Between the sequentially extended plurality of auxiliary cylinders 501, the one end of the main cylinder 101 assembled with the plurality of auxiliary cylinders 501 is first placed into the shaft, and a certain amount of hydraulic oil is pressed into the plurality of inner pipelines 102 on the inner wall of the main cylinder 101, so that the hydraulic oil is injected into the oil pressure cavity 202 through the communication hole 206 after flowing through the inner pipeline 102, and the piston 402 inside the oil pressure cavity 202 is extruded under the pressure, so that the piston 402 pushes the guide rod 401 to slide between the oil pressure cavity 202 and the movable cavity 203. When the guide rod 401 slides towards the movable cavity 203 side, the two groups of rotating arms 404 assembled at the end of the guide rod 401 move synchronously away from the one end of the correction arm shell 201, and are pulled by the pull rope 302, so that the rotating arms 404 gradually open during the extension process, and the synchronous movement of the guide rod 401 in the plurality of correction arm shells 201 can make the plurality of rotating arms 404 extend outward synchronously and abut on the inner wall of the shaft. During the abutting process, the main cylinder 101 is driven to move towards the center point of the shaft, so that the main cylinder 101 and the shaft maintain an approximately coaxial positional relationship, ensuring that the well logging probe 6 is located at the center point of the shaft, and the plurality of auxiliary cylinders 501 can be extended outward through the main cylinder 101, and then maintain a coaxial positional relationship with the shaft through the plurality of correction assemblies 2 arranged thereon, so that the plurality of auxiliary cylinders 501 can be quickly righted and clamped in the shaft by repeating the above operation.

[0029] Please refer to Figure 2 In a preferred embodiment of the application, the number of correction assemblies 2 arranged on the main cylinder 101 and the auxiliary cylinder 501 is at least three.

[0030] In actual application, the number of correction assemblies 2 arranged on the main cylinder 101 and the auxiliary cylinder 501 is at least three. Considering that the main cylinder 101 and the auxiliary cylinder 501 need to be supported in the shaft, three correction assemblies 2 have stability, and can support the main cylinder 101 and the auxiliary cylinder 501 from three directions at the same time to make them move towards the center of the shaft.

[0031] Please refer to Figure 5In a preferred embodiment of the present application, the correction arm housings 201 are arranged on the same side of the main cylinder 101 and the auxiliary cylinder 501, and the height of the correction arm housings 201 is greater than the height of the end planes of the main cylinder 101 and the auxiliary cylinder 501.

[0032] In actual application, the correction arm housings 201 are arranged on the same side of the main cylinder 101 and the auxiliary cylinder 501, and the height of the correction arm housings 201 is greater than the height of the end planes of the main cylinder 101 and the auxiliary cylinder 501, so that the main cylinder 101 and the correction assemblies 2 on the auxiliary cylinders 501 are located on the same plane when the main cylinder 101 and the auxiliary cylinders 501 are nested, which is convenient for sending the structure into the shaft, saving space, and facilitating transportation and carrying.

[0033] Please refer to Figure 1 and Figure 5 In a preferred embodiment of the present application, the correction assemblies 2 arranged on the main cylinder 101 and the correction assemblies 2 arranged on the auxiliary cylinder 501 are arranged in a staggered manner.

[0034] In actual application, the correction assemblies 2 arranged on the auxiliary cylinders 501 are arranged in a staggered manner, so that the correction assemblies 2 are arranged in a staggered manner when the auxiliary cylinders 501 are nested, and the correction assemblies 2 are located on the same horizontal plane.

[0035] Please refer to Figure 5 In a preferred embodiment of the present application, the outer groove 502 on the outer wall of the auxiliary cylinder 501 and the inner convex tube 503 on the inner wall are arranged in a staggered manner, and the inner convex tube 503 is in communication with the correction assemblies 2 arranged on the auxiliary cylinder 501.

[0036] In actual application, the outer groove 502 on the outer wall of the auxiliary cylinder 501 and the inner convex tube 503 on the inner wall are arranged in a staggered manner, so that when the auxiliary cylinders 501 are nested, the correction assemblies 2 arranged on the auxiliary cylinders 501 are arranged in a staggered manner and are staggered in a spiral shape due to the communication between the inner convex tube 503 and the correction assemblies 2, thereby achieving staggered stacking.

[0037] In a preferred embodiment of the present application, the outer groove 502 on the outer wall of the auxiliary cylinder 501 and the inner convex tube 503 on the inner wall are arranged in a staggered manner, and the inner convex tube 503 is in communication with the correction assemblies 2 arranged on the auxiliary cylinder 501.

[0038] Please refer to Figure 4In a preferred embodiment of the application, the top rod mechanism 4 further comprises a limiting block 403, an anti-skid groove 405, an elastic member 406 and a reset spring 407. The limiting block 403 is arranged at one end of the guide rod 401 to limit the sliding track of the guide rod 401. The anti-skid groove 405 is assembled at one end of the rotating arm 404. The elastic member 406 is elastically connected to the two groups of rotating arms 404. The reset spring 407 is arranged in the oil chamber 202 and sleeved on the guide rod 401.

[0039] In actual application, when the piston 402 slides under the action of the hydraulic oil, the guide rod 401 can slide between the oil chamber 202 and the movable chamber 203 to overcome the elastic force of the reset spring 407. When the two groups of rotating arms 404 are away from the U-shaped groove 204, the elastic force of the elastic member 406 is overcome to continuously increase the opening angle of the rotating arms 404 on both sides. The anti-skid groove 405 at one end of the rotating arm 404 is pressed on the inner wall of the shaft, thereby achieving the righting of the well logging probe.

[0040] In one case of the embodiment, the inner convex tube 503 of the plurality of sub-cylinders 501 and the inner tube 102 of the main cylinder 101 can be driven by an external hydraulic oil pump pipe. The sliding between the sub-cylinders 501 can also be driven by an external driving motor, which is not limited here.

[0041] The well logging probe righting and clamping mechanism provided in the above embodiments of the application comprises a plurality of misaligned sub-cylinders 501 which are sequentially and sleevedly assembled in the main cylinder 101. When the well logging probe is sent into the shaft, the top rod mechanism 4 in the well logging probe is moved to abut against the inner wall of the shaft through the plurality of correction assemblies 2 which are circumferentially arranged on the main cylinder 101 and the sub-cylinders 501, thereby achieving the righting and clamping of the well logging probe, and having the flexible and convenient practical function.

[0042] The above description is only the preferred embodiment of the application and is not used to limit the application. Any modification, equivalent replacement and improvement within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A wellbore probe gripping and righting mechanism, comprising: The well logging probe clamping and righting mechanism comprises: a base member comprising a main cylinder and inner pipelines, a plurality of correction assemblies are fixedly assembled on the outer wall surface of the main cylinder, and a plurality of inner pipelines are arranged on the inner wall of the main cylinder, and the number of the inner pipelines is matched with the number of the correction assemblies; the correction assembly comprises a correction arm shell, an oil pressure cavity, a movable cavity and a communication hole, the correction arm shell is circumferentially arranged on the outer wall surface of the main cylinder and fixedly connected with the main cylinder, the oil pressure cavity and the movable cavity are arranged in the correction arm shell, one end of the movable cavity is further provided with a U-shaped groove, one end of the communication hole is in communication with the oil pressure cavity, and the other end is in communication with the inner pipeline; the pull rope assembly comprises elastic wire discs and pull ropes, two groups of the elastic wire discs are arranged on both sides of the U-shaped groove, and the pull ropes are elastically rotationally assembled in the elastic wire discs; the top rod mechanism comprises a guide rod, a piston and rotating arms, the guide rod is slidingly assembled between the oil pressure cavity and the movable cavity, one end of the guide rod is further fixedly assembled with the piston, the piston is arranged in the oil pressure cavity, the other end of the guide rod is further rotationally assembled with two groups of rotating arms, the two groups of rotating arms are respectively connected with the two groups of pull ropes, and the two groups of rotating arms are mirror image arranged; the nested assembly comprises a secondary cylinder, an outer groove and an inner convex tube, a plurality of secondary cylinders are sequentially nested in the main cylinder, one end of the secondary cylinder is circumferentially assembled with a plurality of correction assemblies, a plurality of outer grooves are arranged on the outer wall surface of the secondary cylinder, and a plurality of inner convex tubes are arranged on the inner wall surface of the secondary cylinder; and the well logging probe is assembled in the secondary cylinder with the smallest diameter among the plurality of secondary cylinders.

2. The well bore pipe gripping and centralizing mechanism of claim 1 wherein, The number of the correction assemblies arranged on the main cylinder and the secondary cylinder is at least three.

3. The well bore pipe gripping and centralizing mechanism of claim 1 wherein, The correction arm shells are assembled on the same side of the main cylinder and the secondary cylinder, and the assembly height of the correction arm shells is greater than the end plane height of the main cylinder and the secondary cylinder.

4. The well bore pipe gripping and centralizing mechanism of claim 1 wherein, The plurality of correction assemblies assembled on the main cylinder and the plurality of correction assemblies assembled on the secondary cylinder are arranged in a staggered manner.

5. The well bore pipe gripping and centralizing mechanism of claim 1 wherein, The outer grooves on the outer wall surface of the secondary cylinder and the inner convex tubes on the inner wall surface of the secondary cylinder are arranged in a staggered manner, and the inner convex tubes are in communication with the plurality of correction assemblies assembled on the secondary cylinder.

6. The well bore pipe gripping and centralizing mechanism of claim 1 wherein, The top rod mechanism further comprises a limiting block, an anti-skid groove, an elastic member and a return spring, the limiting block is arranged at one end of the guide rod to limit the sliding track of the guide rod, the anti-skid groove is assembled at one end of the rotating arm, the elastic member elastically connects the two groups of rotating arms, and the return spring is arranged in the oil pressure cavity and nested on the guide rod.

7. The well bore pipe gripping and centralizing mechanism of claim 1 wherein, The diameters of the plurality of secondary cylinders are sequentially increased, and the diameters of the plurality of secondary cylinders are all smaller than the inner diameter of the main cylinder, so that the plurality of secondary cylinders are nested on one side of the main cylinder.

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