Locating device of logging instrument

Abstract

The utility model provides positioning equipment of a logging instrument, which is used for installing the logging instrument, and relates to the technical field of logging equipment. The positioning device comprises: a mobile station; the mounting mechanism is arranged on the moving table, is used for mounting the logging instrument and is configured to drive the logging instrument to swing around the axis of the logging instrument; the position adjusting mechanism is arranged in the moving table and is movably connected with the mounting mechanism; the position adjusting mechanism drives the mounting mechanism to swing in the first direction and the second direction so as to drive the logging instrument to move synchronously. Wherein the first direction is perpendicular to the second direction. According to the positioning equipment of the logging instrument, the positions of the mounting mechanism in the two directions are adjusted through the position adjusting mechanism of the positioning equipment, the mounting mechanism drives the position of the logging instrument to change, the precision of the actual measurement result is improved, and the operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of well logging equipment, and in particular to a positioning device for a well logging instrument. Background Art

[0002] As the main equipment for exploring and developing oil and gas fields, logging instruments play an important role in oil and gas exploration and production.

[0003] The logging instrument is lowered into the wellbore to measure and record data such as resistivity, acoustic waves, nuclear waves, electromagnetic waves, and temperature, and to determine the rock properties, porosity, permeability, location, thickness, oil and gas saturation, and other reservoir parameters of the underground reservoir. This can more accurately understand the underground geological structure and guide drilling, oil production, and production operations. Since the logging instrument is relatively large, it is usually necessary to manually build a positioning device that can support the logging instrument in the target area, and use the positioning device to assist in fixing the logging instrument and completing data measurement.

[0004] However, in actual operations, due to terrain restrictions or the accuracy of the positioning equipment itself, the manually constructed positioning equipment may have some orientation errors, affecting the actual measurement results and subsequent operations. Utility Model Content

[0005] In view of the above problems, an embodiment of the present application provides a positioning device for a well logging instrument, which can accurately adjust the position of the well logging instrument and improve the detection efficiency and detection accuracy of the well logging instrument.

[0006] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0007] The present application embodiment provides a positioning device for a well logging instrument, which is used to install the well logging instrument. The positioning device includes:

[0008] Mobile station;

[0009] The mounting mechanism is arranged on the mobile platform, used for mounting the well logging instrument, and is configured to drive the well logging instrument to swing around its own axis;

[0010] The position adjustment mechanism is arranged in the mobile platform and is movably connected with the mounting mechanism; the position adjustment mechanism drives the mounting mechanism to swing along the first direction and along the second direction to drive the logging instrument to move synchronously; wherein the first direction and the second direction are perpendicular to each other.

[0011] In a possible implementation, the position adjustment mechanism includes a drive assembly and a transmission assembly, and the transmission assembly is connected between the drive assembly and the mounting mechanism;

[0012] The driving assembly drives the transmission assembly to swing along the first direction and along the second direction, and the transmission assembly drives the installation mechanism to move synchronously.

[0013] In a possible implementation, the drive assembly includes a first drive motor and a second drive motor, the first drive motor drives the transmission assembly to swing in a first direction, and the second drive motor drives the transmission assembly to swing in a second direction.

[0014] In a possible implementation manner, the transmission assembly is connected to the second drive motor, a transmission sleeve is disposed on an outer jacket of the second drive motor, and the first drive motor is transmission-connected to the transmission sleeve;

[0015] The first driving motor drives the transmission sleeve to rotate along the first direction to drive the transmission component to swing along the first direction.

[0016] In a possible implementation, the transmission assembly includes an active rod, a transmission member, a connecting rod and a connecting seat;

[0017] The active rod is connected to the second driving motor; the transmission member is movably connected to the active rod and moves along the extension direction of the active rod; one end of the connecting rod is connected to the transmission member, and the other end of the connecting rod is movably connected to the connecting seat; the connecting seat is connected to the mounting mechanism.

[0018] In a possible implementation, the transmission assembly further includes a fixing collar, the fixing collar is sleeved on the mounting mechanism, and the connecting seat is mounted on the fixing collar.

[0019] In a possible implementation, the mounting mechanism includes a mounting seat and a guide sleeve, and the guide sleeve is slidably connected to the mounting seat;

[0020] The mounting seat is used to support the logging instrument so that the logging instrument can swing around its own axis; the guide sleeve is used for the logging instrument to pass through, and the position adjustment mechanism is movably connected to the guide sleeve.

[0021] In a possible implementation, the mounting seat includes a fixed sleeve and a rotating member, the fixed sleeve is connected to the moving platform, and the rotating member is disposed in the fixed sleeve and rotates in the fixed sleeve;

[0022] The guide sleeve is connected to the rotating member, and the rotating member is used for the logging instrument to pass through.

[0023] In a possible implementation, the installation mechanism further includes a clamping assembly, which is connected to the guide sleeve and is used to clamp the logging instrument.

[0024] In a possible implementation, the clamping assembly includes a fixing seat and a clamping frame, the fixing seat is connected to the guide sleeve, the clamping frame is movably connected to the fixing seat, and the clamping frame is used to clamp or release the logging instrument.

[0025] In a possible embodiment, the clamping frame includes a moving rod and two clamping arms, two sliding grooves are arranged opposite to each other in the fixed seat, the connecting ends of the two clamping arms are respectively connected to the two ends of the moving rod, and the clamping ends of the two clamping arms are respectively located in the sliding grooves;

[0026] The connecting ends of the two clamping arms move toward or away from each other along the moving rod, so that the clamping ends of the two clamping arms move toward or away from each other along the two sliding grooves respectively, so as to clamp or release the logging instrument.

[0027] In a possible implementation, from the connection end of the clamping arm to the clamping end of the clamping arm, the clamping arm includes a connecting plate, a transmission plate and a clamping plate connected in sequence;

[0028] The connecting plates of the two clamping arms are respectively located on both sides of the fixing seat, and the connecting plates move along the moving rod; the transmission plates of the two clamping arms extend to the two sliding grooves respectively; and the clamping plates of the two clamping arms slide along the two sliding grooves respectively.

[0029] The positioning device of the logging instrument provided in the embodiment of the present application includes a mobile platform, a mounting mechanism and a position adjustment structure. The mounting mechanism and the position adjustment structure are both arranged on the mobile platform, and the mounting mechanism is movably connected to the position adjustment structure. The logging instrument is installed on the mounting mechanism, and the mounting mechanism drives the logging instrument to swing around the axis of the logging instrument. The position adjustment structure can drive the mounting mechanism to swing along the first direction (front and back) and along the second direction (left and right), and the mounting mechanism drives the logging instrument to adjust its position within the range formed by the first direction and the second direction, so as to compensate for the position error of the artificially constructed positioning device, improve the accuracy of the actual measurement results of the logging instrument, and improve the operating efficiency of the logging instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A three-dimensional structural diagram of a positioning device for a well logging instrument provided in an embodiment of the present application;

[0032] Figure 2 for Figure 1 The cross-sectional structure diagram of the positioning equipment of the well logging instrument along the AA line;

[0033] Figure 3 for Figure 2 A partial enlarged view of the positioning device of the well logging instrument at position B;

[0034] Figure 4 for Figure 2 A partial enlarged view of the positioning equipment of the logging instrument at position C.

[0035] Description of reference numerals:

[0036] 1- Positioning equipment;

[0037] 10- mobile station;

[0038] 110-travel wheel; 120-drawer;

[0039] 20-installation mechanism;

[0040] 210-mounting seat; 220-guide sleeve; 230-clamping assembly;

[0041] 211-fixed sleeve; 212-rotating member; 231-fixed seat; 232-clamping frame;

[0042] 232a-moving rod; 232b-clamping arm;

[0043] 232b1-connecting plate; 232b2-transmission plate; 232b3-clamping plate;

[0044] 30-position adjustment mechanism;

[0045] 310-driving assembly; 320-transmission assembly; 330-transmission sleeve; 340-support assembly;

[0046] 311-first drive motor; 312-second drive motor; 321-active rod; 322-transmission member; 323-linking rod; 324-connecting seat; 325-fixing collar; 341-mounting plate; 342-shaft sleeve; 343-transmission shaft;

[0047] 40-control box;

[0048] 410-display screen; 420-button;

[0049] 50-Cable. DETAILED DESCRIPTION

[0050] As described in the background technology, in the related art, a positioning platform is usually built manually to support the logging instrument. Due to terrain restrictions, the manually built positioning platform may have some azimuth errors, which will affect the actual measurement results and further affect subsequent operations.

[0051] In view of this, the positioning device of the well logging instrument provided in the embodiment of the present application includes a mobile platform, a mounting mechanism and a position adjustment structure. The mounting mechanism and the position adjustment structure are both arranged on the mobile platform, and the mounting mechanism is movably connected to the position adjustment structure. The well logging instrument is installed on the mounting mechanism, and the mounting mechanism drives the well logging instrument to swing around the axis of the well logging instrument. The position adjustment structure can drive the mounting mechanism to swing along the first direction (front and back) and along the second direction (left and right), and the mounting mechanism drives the well logging instrument to adjust its position within the range formed by the first direction and the second direction, so as to compensate for the position error of the artificially constructed positioning device, improve the accuracy of the actual measurement results of the well logging instrument, and improve the operating efficiency of the well logging instrument.

[0052] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of this application.

[0053] Figure 1 A three-dimensional structural diagram of a positioning device for a well logging instrument provided in an embodiment of the present application. Figure 2 for Figure 1 The cross-sectional structure diagram of the positioning equipment of the logging instrument along the AA line.

[0054] Reference Figure 1 and Figure 2 As shown, the embodiment of the present application provides a positioning device for a well logging instrument (hereinafter referred to as the positioning device), and the positioning device 1 provides support for the well logging instrument. When there is already a well logging instrument in the well, when other well logging instruments are installed, the positioning device 1 can be used for connecting and assembling the other well logging instruments with the well logging instruments in the well, and can provide support and adjust the position of the well logging instruments.

[0055] Reference Figure 1 As shown, the positioning device 1 includes a mobile platform 10. The mobile platform 10 provides support for the positioning device 1, and the mobile platform 10 can move the positioning device 1 to a desired working position. A plurality of running wheels 110 can be provided at the bottom of the mobile platform 10, so that the positioning device 1 can be moved more easily and the use of manpower can be reduced. Exemplarily, a locking device (not shown in the figure) can be provided on the running wheel 110. After the mobile platform 10 is moved into place, during the process of measuring data by the logging instrument, the locking device of the running wheel 110 locks the running wheel and fixes the positioning device 1 at the current position to prevent the measurement data of the logging instrument from being inaccurate.

[0056] The mobile platform 10 may also be provided with one or more drawers 120, which may store wrenches, fasteners, sensors and other items for convenient use when assembling the logging instrument or repairing the positioning device 1. The drawer 120 may be provided with a handle for convenient opening or closing of the drawer.

[0057] Exemplarily, the mobile platform 10 may use a steel pipe profile as a supporting frame, and the outer box body is made of a steel plate through sheet metal forming, welding and other processes.

[0058] The positioning device 1 includes a mounting mechanism 20, and the mobile platform 10 provides support for the mounting mechanism 20. Exemplarily, the mounting mechanism 20 can be arranged in the central area of ​​the mobile platform 10. A part of the mounting mechanism 20 is fixed as a whole with the mobile platform 10, and another part of the mounting mechanism 20 can swing relative to the mobile platform 10. The well logging instrument is fixed in the mounting mechanism 20, and the well logging instrument can swing around the axis of the well logging instrument with the mounting mechanism 20.

[0059] The positioning device 1 further comprises a position adjustment mechanism 30. The position adjustment mechanism 30 is arranged on the mobile platform 10, and the mobile platform 10 also provides support for the position adjustment mechanism 30. The position adjustment mechanism 30 is used to adjust the position of the well logging instrument.

[0060] Figure 4 for Figure 2 A partial enlarged view of the positioning device of the logging tool at position C. Figure 4 As shown, the position adjustment mechanism 30 includes a driving component 310 and a transmission component 320. The driving component 310 is arranged on the mobile platform 10, and the transmission component 320 is connected between the driving component 310 and the mounting mechanism 20. The driving component 310 provides a driving force, and the driving force is applied to the mounting mechanism 20 through the transmission component 320. The driving component 310 can drive the transmission component 320 to swing in the first direction (front and back) and the second direction (left and right), and the transmission component 320 drives the mounting mechanism 20 to swing in the first direction (front and back) and the second direction (left and right), and the mounting mechanism 20 drives the logging instrument to adjust its position within the range formed by the first direction and the second direction. Therefore, the positioning device 1 can adjust the position of the logging instrument, improve the accuracy of the actual measurement results, and improve the working efficiency.

[0061] The positioning device 1 further includes a control box 40, which is embedded in the mobile platform 10. The upper surface of the mobile platform 10 is a working surface. A display screen 410 is provided on the control box 40, and the display screen 410 can display data information of the installation mechanism 20, so as to facilitate real-time viewing of the position information of the installation mechanism 20. Exemplarily, the display screen 410 can be oriented toward the top of the mobile platform 10, so that the user can view the display screen 410. The display screen 410 can be arranged at a certain angle to the working surface, so that the screen reflection of the display screen 410 can be reduced, and information viewing is convenient.

[0062] In addition, the control box 40 may also be provided with a button 420, through which the data of the installation mechanism 20 on the display screen 410 can be viewed; by pressing the relevant button 420, the relevant data of the position adjustment mechanism 30 can be adjusted to adjust the position of the installation mechanism 20.

[0063] A cable 50 may be provided between the control box 40 and the logging instrument, so that the data detected by the logging instrument can be transmitted to the control box in a timely manner for recording and analysis.

[0064] A cable 50 (not shown) may also be provided between the control box 40 and the position adjustment mechanism 30 , and the main data of the position adjustment mechanism 30 may be transmitted to the control box 40 via the cable 50 , and the data of the position adjustment mechanism 30 may be viewed on the display screen 410 .

[0065] Figure 3 for Figure 2 A partial enlarged view of the positioning device of the logging tool at position B. Figure 2 and Figure 3 As shown, the mounting mechanism 20 includes a mounting seat 210 and a guide sleeve 220. The outer side of the mounting seat 210 is mounted on the mobile platform 10, and the mounting seat 210 provides support for the guide sleeve 220. The top of the guide sleeve 220 is an entry end, and the entry end of the guide sleeve 220 is slidably connected to the mounting seat 210. The interior of the guide sleeve 220 is used to install the logging instrument.

[0066] For ease of explanation, in this embodiment, the portion of the guide sleeve 220 connected to the position adjustment mechanism 30 is defined as the connection portion of the guide sleeve 220. The connection portion of the guide sleeve 220 can be located below its entry end. For example, the connection portion of the guide sleeve 220 is located in the middle portion of its axial direction, so that the guide sleeve 220 is evenly stressed during the rotation process, reducing the probability of failure of the guide sleeve 220.

[0067] In one embodiment, the mounting base 210 includes a fixed sleeve 211 and a rotating member 212. The fixed sleeve 211 is mounted on the mobile platform 10, and the fixed sleeve 211 can be fixedly connected to the mobile platform 10. The rotating member 212 is disposed in the fixed sleeve 211, and the rotating member 212 can rotate in the fixed sleeve 211.

[0068] For example, the fixed sleeve 211 and the rotating member 212 may adopt a spherical bearing structure, the rotating member 212 is a spherical structural member, the inner surface of the fixed sleeve 211 is a cambered surface matching therewith, and the rotating member 212 and the fixed sleeve 211 may perform 360° relative rotation.

[0069] The rotating member 212 is provided with an axial hole, and the guide sleeve 220 passes through the axial hole of the rotating member 212. The entry end of the guide sleeve 220 cooperates with the rotating member 212, and the guide sleeve 220 can slide in the axial hole of the rotating member 212. The entry end of the guide sleeve 220 rotates as the rotating member 212 rotates in the fixed sleeve 211, and the guide sleeve 220 swings as the entry end of the guide sleeve 220 rotates, and the guide sleeve 220 can drive the well logging instrument to swing.

[0070] Reference Figure 2 and Figure 4 As shown, the drive assembly 310 includes a first drive motor 311 and a second drive motor 312. The first drive motor 311 drives the transmission assembly 320 to rotate around the motor shaft, and the transmission assembly 320 drives the guide sleeve 220 to swing along the first direction (front and back), and the second drive motor 312 drives the transmission assembly 320 to drive the guide sleeve 220 to swing along the second direction (left and right). The guide sleeve 220 drives the well logging instrument to adjust its position within the range formed by the first direction and the second direction. The first drive motor 311 and the second drive motor 312 provide driving force for adjusting the position of the well logging instrument.

[0071] In one embodiment, the position adjustment mechanism 30 includes a drive assembly 310 and two sets of transmission assemblies 320. As described above, the drive assembly 310 includes a first drive motor 311 and a second drive motor 312. The first drive motor 311 and the second drive motor 312 are respectively arranged at different positions of the mobile platform 10, and the first drive motor 311 and the second drive motor 312 are respectively connected to the two sets of transmission assemblies 320. The first drive motor 311 can drive the transmission assembly 320 to swing along the first direction (front and back), and the transmission assembly 320 drives the guide sleeve 220 to swing along the first direction (front and back). The second drive motor 312 can drive the transmission assembly 320 to swing along the second direction (left and right), and the transmission assembly 320 drives the guide sleeve 220 to swing along the second direction (left and right). Therefore, the two sets of drive assemblies 310 can control the position of the guide sleeve 220 through the two sets of transmission assemblies 320 respectively. The guide sleeve 220 then drives the adjustment of the position of the well logging instrument.

[0072] In another embodiment, the position adjustment mechanism 30 includes a driving assembly 310, a transmission assembly 320 and a transmission sleeve 330. As described above, the driving assembly 310 includes a first driving motor 311 and a second driving motor 312. The first driving motor 311 is fixed to the moving platform 10. The transmission sleeve 330 is sleeved on the outer side of the second driving motor 312, and the transmission sleeve 330 is composed of a head and a tail. The second driving motor 312 is fixed inside the head of the transmission sleeve 330, and the transmission assembly 320 is located at the tail position of the transmission sleeve 330. The transmission sleeve 330 is used to drive the second driving motor 312 and the transmission assembly 320 to move synchronously with the transmission sleeve 330.

[0073] The first drive motor 311 is in driving connection with the transmission sleeve 330, and the second drive motor 312 is connected with the transmission assembly 320. Such an arrangement can reduce the space occupied by the position adjustment mechanism 30, reduce the size of the positioning device, and reduce the cost of the positioning device 1.

[0074] In the embodiment of the present application, the following is established: Figure 2 In the coordinate system shown, the extension direction of the motor shaft of the first drive motor 311 is the Z direction, the extension direction of the motor shaft of the second drive motor 312 is the X direction, and the Y direction conforms to the right-hand rule. The first drive motor 311 drives the transmission sleeve 330 to rotate around the Z axis, the transmission sleeve 330 is sleeved on the outer side of the second drive motor 312 and the second drive motor 312 is connected to the transmission assembly 320, the transmission sleeve 330 drives the second drive motor 312 and the transmission assembly 320 to swing along the first direction (Y direction), the transmission assembly 320 is movably connected to the connecting part of the guide sleeve 220, and the transmission assembly 320 drives the guide sleeve 220 to swing along the first direction (Y direction).

[0075] Reference Figure 4 As shown, the position adjustment mechanism 30 may further include a support assembly 340, and the support assembly 340 includes a mounting plate 341, a sleeve 342 and a transmission shaft 343. The mounting plate 341 is fixed to the mobile platform 10, and the sleeve 342 is connected between the mounting plate 341 and the transmission shaft 343. The mounting plate 341 provides support for the transmission shaft 343 through the sleeve 342. The motor shaft of the first drive motor 311 is connected to the transmission shaft 343, and the transmission shaft 343 is connected to the transmission sleeve 330. The first drive motor 311 outputs torque to the transmission sleeve 330 through the transmission shaft 343. Because the motor shaft of the first drive motor 311 outputs torque to the transmission sleeve 330, the driven parts are more and easily damaged. In order to protect the first drive motor 311, the support assembly 340 is added, and the increase of the support assembly 340 can increase the life of the first drive motor 311.

[0076] In one embodiment, the sleeve 342 is fixedly connected to the mounting plate 341, and the transmission shaft 343 can rotate in the sleeve 342. Exemplarily, a lubricant is applied between the sleeve 342 and the transmission shaft 343 to reduce the friction between the sleeve 342 and the transmission shaft 343. The mounting plate 341 and the sleeve 342 ensure that the transmission shaft 343 rotates smoothly.

[0077] In another embodiment, the sleeve 342 is provided with an inner layer and an outer layer, and the inner layer and the outer layer of the sleeve 342 can realize relative rotation. The transmission shaft 343 is connected to the inner layer of the sleeve 342, and the outer layer of the sleeve 342 is connected to the mounting plate 341. The mounting plate 341 and the sleeve 342 ensure that the transmission shaft 343 rotates smoothly.

[0078] Reference Figure 4As shown, the transmission assembly 320 also includes an active rod 321, a transmission member 322, a connecting rod 323, and a connecting seat 324. The active rod 321 is connected to the motor shaft of the second drive motor 312, and the active rod 321 is movably connected to the transmission member 322. The transmission member 322 can move on the active rod 321 along the extension direction (X direction) of the active rod 321. Exemplarily, the active rod 321 and the transmission member 322 can be matched with a screw structure or a hydraulic structure can be used to push the transmission member 322 to move on the active rod 321. One end of the connecting rod 323 is connected to the transmission member 322, and the other end of the connecting rod 323 is movably connected to the connecting seat 324. Exemplarily, the other end of the connecting rod 323 and the connecting seat 324 can be connected in a ball bearing manner, which can achieve 360° relative rotation. The connecting seat 324 is arranged on the guide sleeve 220.

[0079] The second driving motor 312 outputs torque to the active rod 321, the active rod 321 rotates around its own axis, the transmission member 322 moves linearly in the extension direction (X direction) of the active rod 321, the transmission member 322 drives the linkage rod 323 to move along the X direction, the linkage rod 323 drives the connecting seat 324 to move along the X direction, the connecting seat 324 drives the connecting part of the guide sleeve 220 to move along the X direction, and the guide sleeve 220 swings along the second direction (X direction). The linkage rod 323 and the connecting seat 324 are movably connected to prevent the linkage rod 323 from getting stuck when driving the connecting seat 324 to move.

[0080] The transmission assembly 320 may further include a fixed collar 325, which is sleeved on the outer side of the guide sleeve 220, and the connecting seat 324 is installed on the fixed collar 325. The first drive motor 311 outputs torque to the fixed collar 325 through the transmission assembly 320, and the fixed collar 325 drives the guide sleeve 220 to swing along the first direction (Y direction). The torque output by the second drive motor 312 acts on the guide sleeve 220 through the fixed collar 325, so that the guide sleeve 220 swings along the second direction (X direction). A logging instrument is installed in the guide sleeve 220, which drives the logging instrument to change its position within the range formed by the first direction and the second direction. The fixed collar 325 makes the guide sleeve 220 more evenly stressed, preventing the guide sleeve 220 from causing damage to the mounting mechanism 20 when it swings.

[0081] As described above, when the position of the logging instrument needs to be adjusted according to the actual situation or another logging instrument needs to be installed on the existing logging instrument in the well, the guide sleeve 220 needs to be adjusted. The first drive motor 311 outputs torque to the transmission shaft 343, and the transmission shaft 343 rotates around the axis of the motor shaft of the first drive motor 311. The transmission shaft 343 transmits torque to the transmission sleeve 330, and the transmission sleeve 330 drives the second drive motor 312, the active rod 321, the transmission member 322, the linkage rod 323, and the connecting seat 324 to rotate around the axis of the motor shaft of the first drive motor 311. The connecting seat 324 drives the connecting part of the guide sleeve 220 to swing along the first direction (Y direction) through the fixed collar 325, and the entry end of the guide sleeve 220 drives the rotating member 212 to rotate in the fixed sleeve 211, and the guide sleeve 220 swings along the first direction (Y direction).

[0082] The second drive motor 312 outputs torque to the active rod 321, the active rod 321 rotates around the motor shaft of the second drive motor 312, the transmission member 322 moves along the second direction (X direction) in the axial direction of the active rod 321, the transmission member 322 drives the linkage rod 323 and the connecting seat 324 to move along the second direction (X direction), the connecting seat 324 drives the connecting part of the guide sleeve 220 to move along the second direction (X direction) through the fixed ring 325, and the guide sleeve 220 swings along the second direction (X direction).

[0083] As described above, the logging instrument is mounted on the guide sleeve 220. To prevent the logging instrument from changing its position when measuring data, a fixing device is provided between the guide sleeve 220 and the logging instrument. In one embodiment, a hydraulic chuck is provided on the guide sleeve 220, and the logging instrument is inserted into the guide sleeve 220. By controlling the hydraulic system to apply varying pressure to the logging instrument, the logging instrument can be clamped or loosened.

[0084] In another embodiment, the installation mechanism 20 further includes a clamping assembly 230, which is connected to the guide sleeve 220. The clamping assembly 230 is used to fix the well logging instrument and the guide sleeve 220 as one body, and the position of the well logging instrument can be adjusted by adjusting the position of the guide sleeve 220. The existence of the clamping assembly 230 facilitates the installation and removal of the well logging instrument.

[0085] Reference Figure 3 As shown, the clamping assembly 230 includes a fixing seat 231 and a clamping frame 232. The fixing seat 231 is connected to the entry end of the guide sleeve 220 and is located above the mounting seat 210. The clamping frame 232 is movably connected to the fixing seat 231. Two sliding grooves in opposite positions are provided in the fixing seat 231. The clamping frame 232 can perform telescopic movement due to the restriction of the sliding grooves of the fixing seat 231. The logging instrument can be clamped or loosened by the extension and contraction of the clamping frame 232, which facilitates the installation and removal of the logging instrument from the guide sleeve 220.

[0086] Reference Figure 3 As shown, the clamping frame 232 includes a moving rod 232a and two clamping arms 232b. One end of the two clamping arms 232b is a connecting end, and the other end is a clamping end. When the moving rod 232a rotates, the connecting ends of the two clamping arms 232b move toward or away from each other along the axial direction of the moving rod 232a, and the clamping ends of the two clamping arms 232b move toward or away from each other in two opposite sliding grooves of the fixed seat 231.

[0087] In one embodiment, the cylindrical surfaces at both ends of the moving rod 232a are provided with external threads, and the threads at both ends are in opposite directions. The connecting ends of the two clamping arms 232b are provided with internal threads in the same direction. The two ends of the moving rod 232a are respectively connected to the connecting ends of the two clamping arms 232b by threads. When the moving rod 232a rotates, the connecting ends of the two clamping arms 232b rotate in opposite directions, and the clamping ends of the two clamping arms 232b move toward or away from each other in the sliding grooves at two opposite positions of the fixed seat 231. The clamping ends of the two clamping arms 232b clamp or release the logging instrument.

[0088] Exemplarily, handles are provided at both ends of the moving rod 232a, and the handles are convenient for applying a torsional force when rotating the moving rod 232a. Anti-skid pads are installed on the outer surfaces of the handles to increase the friction force of the outer surfaces of the handles and prevent slipping when rotating the moving rod 232a.

[0089] Reference Figure 3 As shown, the clamping arm 232b includes a connecting plate 232b1, a transmission plate 232b2 and a clamping plate 232b3. One end of the two connecting plates 232b1 is movably connected to the two ends of the moving rod 232a, and the other end of the two connecting plates 232b1 is connected to one end of the transmission plate 232b2. The other end of the transmission plate 232b2 is connected to the clamping plate 232b3. The clamping plate 232b3 is used to clamp the logging instrument. The two connecting plates 232b1 can move relative to or away from each other on the moving rod 232a, the two connecting plates 232b1 drive the two transmission plates 232b2 to move relative to or away from each other, the two transmission plates 232b2 drive the two clamping plates 232b3 to slide relative to or away from each other in the sliding groove of the fixed seat 231, and the clamping plates 232b3 clamp or release the logging instrument. The connecting plate 232b1, the transmission plate 232b2 and the clamping plate 232b3 make the clamping arm 232b more convenient to manufacture and process, thereby reducing the processing cost.

[0090] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A positioning device for a well logging instrument, used for installing a well logging instrument, characterized in that: The positioning device comprises: Mobile station; A mounting mechanism, disposed on the mobile platform, used for mounting the well logging instrument and configured to drive the well logging instrument to swing around its own axis; A position adjustment mechanism is arranged in the movable platform and is movably connected to the mounting mechanism; the position adjustment mechanism drives the mounting mechanism to swing along a first direction and a second direction to drive the logging instrument to move synchronously; wherein the first direction and the second direction are perpendicular to each other.

2. The positioning device of the well logging instrument according to claim 1, characterized in that: The position adjustment mechanism comprises a driving assembly and a transmission assembly, wherein the transmission assembly is connected between the driving assembly and the mounting mechanism; The driving assembly drives the transmission assembly to swing along the first direction and along the second direction, and the transmission assembly drives the installation mechanism to move synchronously.

3. The positioning device of the well logging instrument according to claim 2, characterized in that: The driving assembly includes a first driving motor and a second driving motor. The first driving motor drives the transmission assembly to swing along the first direction, and the second driving motor drives the transmission assembly to swing along the second direction.

4. The positioning device of the well logging instrument according to claim 3, characterized in that: The transmission assembly is connected to the second drive motor, a transmission sleeve is disposed on the outer cover of the second drive motor, and the first drive motor is in transmission connection with the transmission sleeve; The first driving motor drives the transmission sleeve to rotate along the first direction to drive the transmission assembly to swing along the first direction.

5. The positioning device of the well logging instrument according to claim 4, characterized in that: The transmission assembly includes an active rod, a transmission member, a connecting rod and a connecting seat; The active rod is connected to the second driving motor; the transmission member is movably connected to the active rod and moves along the extension direction of the active rod; one end of the connecting rod is connected to the transmission member, and the other end of the connecting rod is movably connected to the connecting seat; the connecting seat is connected to the mounting mechanism.

6. The positioning device of the well logging instrument according to claim 5, characterized in that: The transmission assembly also includes a fixing collar, the fixing collar is sleeved on the mounting mechanism, and the connecting seat is mounted on the fixing collar.

7. The positioning device of the well logging instrument according to any one of claims 1 to 6, characterized in that: The mounting mechanism comprises a mounting seat and a guide sleeve, wherein the guide sleeve is slidably connected to the mounting seat; The mounting seat is used to support the logging instrument so that the logging instrument can swing around its own axis; the guide sleeve is used for the logging instrument to pass through, and the position adjustment mechanism is movably connected to the guide sleeve.

8. The positioning device of the well logging instrument according to claim 7, characterized in that: The mounting seat comprises a fixed sleeve and a rotating member, wherein the fixed sleeve is connected to the moving platform, and the rotating member is arranged in the fixed sleeve and rotates in the fixed sleeve; The guide sleeve is connected to the rotating member, and the rotating member is used for the well logging instrument to pass through.

9. The positioning device of the well logging instrument according to claim 7, characterized in that: The installation mechanism also includes a clamping assembly, which is connected to the guide sleeve and is used to clamp the well logging instrument.

10. The positioning device of the well logging instrument according to claim 9, characterized in that: The clamping assembly comprises a fixing seat and a clamping frame, wherein the fixing seat is connected to the guide sleeve, and the clamping frame is movably connected to the fixing seat, and the clamping frame is used to clamp or release the well logging instrument.

11. The positioning device of the well logging instrument according to claim 10, characterized in that: The clamping frame includes a moving rod and two clamping arms, two sliding grooves are arranged opposite to each other in the fixing seat, the connecting ends of the two clamping arms are respectively connected to the two ends of the moving rod, and the clamping ends of the two clamping arms are respectively located in the sliding grooves; The connecting ends of the two clamping arms move toward or away from each other along the moving rod, so that the clamping ends of the two clamping arms move toward or away from each other along the two sliding grooves respectively to clamp or release the logging instrument.

12. The positioning device of the well logging instrument according to claim 11, characterized in that: From the connecting end of the clamping arm to the clamping end of the clamping arm, the clamping arm includes a connecting plate, a transmission plate and a clamping plate connected in sequence; The connecting plates of the two clamping arms are respectively located on both sides of the fixing seat, and the connecting plates move along the moving rod; the transmission plates of the two clamping arms extend to the two sliding grooves respectively; and the clamping plates of the two clamping arms slide along the two sliding grooves respectively.

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