Centralizer with borehole trimming function

Abstract

The utility model relates to the technical field of centralizers, in particular to a centralizer with a borehole trimming function. The technical problems that when a traditional centralizer is inserted into a borehole, due to the fact that an uneven inner wall possibly exists during borehole drilling, normal insertion of the centralizer and erecting work of a casing pipe are affected; according to the technical scheme, the centralizer with the borehole trimming function comprises a connecting base, a regulating and controlling assembly, a limiting assembly, a rotating assembly, an adjusting assembly, a connecting assembly and a trimming assembly; compared with a traditional centralizer which may have an uneven inner wall during drilling and affects normal insertion of the centralizer and erection of a sleeve, the centralizer has the advantages that the size of the trimming structure is adjusted through rotation of the double-thread structure, so that the trimming assembly 7 is tightly attached to the inner wall of a well, and the trimming effect is improved. And the trimming structure rotates along the inner wall of the borehole through the rotating structure to trim the borehole, so that the situation that the inner wall of the borehole is uneven to affect the erection work of the casing pipe is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of centralizers, in particular to a centralizer with a wellbore trimming function. Background Art

[0002] A casing centralizer is a tool used for casing correction in a well. The casing may be distorted or offset during drilling or completion operations, which can cause difficulties in subsequent operations. The casing centralizer can correct the position of the casing by applying force and pressure to realign it and keep it stable. It usually consists of a series of clamps and connecting rods and can be adjusted and positioned as needed. The use of the casing centralizer is very important because it can ensure that the casing in the well is installed correctly and is crucial for the smooth progress of subsequent operations. Therefore, in downhole operations, a casing centralizer is needed to solve problems such as casing offset or distortion to ensure the stability and smooth progress of the well. However, during the use of traditional centralizers, the traditional centralizer corrects the position of the casing by applying force and pressure to realign it and keep it stable. However, when the traditional centralizer is inserted into the wellbore, due to the uneven inner wall that may exist during wellbore drilling, it affects the normal insertion of the centralizer and the erection work of the casing. Summary of the Utility Model

[0003] In order to overcome the problem that during the operation of traditional centralizers in daily use, the traditional centralizer corrects the position of the casing by applying force and pressure to realign it and keep it stable. However, when the traditional centralizer is inserted into the wellbore, due to the uneven inner wall that may exist during wellbore drilling, it affects the normal insertion of the centralizer and the erection work of the casing.

[0004] The technical solution of the utility model is: a centralizer with a wellbore trimming function, including a connection seat, a control component, a limit component, a rotation component, an adjustment component, a connection component, and a trimming component; a control component with a control function is arranged above the connection seat, a limit component with a limiting function is arranged inside the connection seat, a rotation component with a rotation function is arranged outside the control component, an adjustment component with an adjustment function is arranged on one side of the rotation component, a connection component with a connection function is arranged at one end of the adjustment component, and a trimming component with a trimming function is arranged inside the connection component.

[0005] Preferably, the position of the regulating component of the connecting seat is fixed, the casing is fixed by the limiting component, the regulating component is started to drive the rotating component to move up and down, the rotating component moves up and down to drive the adjusting component to rotate, and the adjusting component rotates to drive the connecting component to move linearly. The size of the centralizer can be adjusted according to the size of the wellbore so that the casing is located at the central position of the wellbore. The rotating component rotates to drive the trimming component to rotate around the casing as the center. At the same time, the trimming component is started to rotate and trim the inner wall of the wellbore to prevent the unevenness of the inner wall of the wellbore from affecting the erection work of the casing.

[0006] Preferably, the regulating component includes a first motor and a threaded rod. A first motor is arranged above the connecting seat, the output end of the first motor is provided with a threaded rod, and there are two opposite threads on the threaded rod. During use, the first motor is started to drive the threaded rod to rotate.

[0007] Preferably, the limiting component includes a limiting rod and a fixing bolt. A limiting rod is arranged inside the connecting seat, and a fixing bolt is arranged inside the connecting seat. The fixing bolt is in threaded connection with the connecting seat. During use, the position of the casing can be fixed by rotating the fixing bolt.

[0008] Preferably, the rotating component includes a connecting ring, a second motor, a first rotating shaft, an adjusting gear and a gear rack. A connecting ring is arranged outside the threaded rod, and the connecting ring is in threaded connection with the threaded rod. A second motor is arranged above the connecting ring, the output end of the second motor is provided with a first rotating shaft, an adjusting gear is arranged outside the first rotating shaft, a gear rack is arranged outside the connecting ring, and the adjusting gear is in meshing connection with the gear rack. The gear rack and the connecting ring are rotationally connected by a bearing. During use, the connecting ring moves up and down driven by the rotation of the threaded rod, the position of the connecting ring is limited by the limiting rod, the second motor is started to drive the first rotating shaft to rotate, the adjusting gear rotates driven by the rotation of the first rotating shaft, and the gear rack rotates driven by the rotation of the adjusting gear.

[0009] Preferably, the adjusting component includes a first connecting block and a connecting handle. A first connecting block is arranged on one side of the connecting ring, and a connecting handle is arranged on one side of the first connecting block. The connecting handle is rotationally connected with the first connecting block. During use, the first connecting block moves up and down driven by the up and down movement of the connecting ring, and the connecting handle rotates driven by the up and down movement of the first connecting block.

[0010] Preferably, the connecting component includes a second connecting block and a connecting plate. A second connecting block is arranged at one end of the connecting handle, and the second connecting block is rotationally connected with the connecting handle. A connecting plate is arranged below the second connecting block. During use, the connecting plate moves linearly driven by the rotation of the connecting handle.

[0011] Preferably, the trimming assembly includes a third motor, a second rotating shaft and a grinding block; a third motor is arranged above the connecting plate, the output end of the third motor is provided with a second rotating shaft, and a grinding block is arranged on the outer side of the second rotating shaft. During use, the linear movement of the connecting plate drives the linear movement of the grinding block, so that the size of the centralizer can be adjusted according to the size of the wellbore. The rotation of the gear rack drives the rotation of the first connecting block, thereby driving the grinding block to rotate around the casing as the center. By starting the third motor to drive the second rotating shaft to rotate, and the rotation of the second rotating shaft drives the grinding block to rotate, so as to trim the inner wall of the wellbore and prevent the uneven inner wall of the wellbore from affecting the erection work of the casing.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. Compared with the traditional centralizer that corrects the position of the casing by applying force and pressure to realign and stabilize it, when the traditional centralizer is inserted into the wellbore, since the inner wall of the wellbore may be uneven during drilling, it affects the normal insertion of the centralizer and the erection work of the casing. This centralizer adjusts the size of the trimming structure by rotating the double-threaded structure, so that the trimming assembly closely adheres to the inner wall of the wellbore, and the trimming structure rotates along the inner wall of the wellbore through the rotating structure to trim the wellbore, realizing the prevention of the uneven inner wall of the wellbore from affecting the erection work of the casing;

[0014] 2. By starting the first motor to drive the threaded rod to rotate, the rotation of the threaded rod drives the connecting ring to move up and down. Starting the second motor drives the first rotating shaft to rotate, the rotation of the first rotating shaft drives the adjusting gear to rotate, the rotation of the adjusting gear drives the gear rack to rotate, the up and down movement of the connecting ring drives the up and down movement of the first connecting block, the up and down movement of the first connecting block drives the connecting handle to rotate, the rotation of the connecting handle drives the linear movement of the connecting plate, and the linear movement of the connecting plate drives the linear movement of the grinding block, so that the size of the centralizer can be adjusted according to the size of the wellbore. The rotation of the gear rack drives the rotation of the first connecting block, thereby driving the grinding block to rotate around the casing as the center. By starting the third motor to drive the second rotating shaft to rotate, and the rotation of the second rotating shaft drives the grinding block to rotate, so as to trim the inner wall of the wellbore and prevent the uneven inner wall of the wellbore from affecting the erection work of the casing;

[0015] 3. The position of the connecting ring is limited by the limiting rod, and the position of the casing can be fixed by rotating the fixing bolt, so that the casing remains fixed when inserted into the wellbore, improving the stability of the centralizer during use. Description of the Drawings

[0016] Figure 1 Shown is a first three-dimensional structural schematic diagram of the centralizer with wellbore trimming function of the present utility model;

[0017] Figure 2The second three-dimensional structural schematic diagram of the centralizer with a wellbore trimming function according to the present utility model is shown;

[0018] Figure 3 The first sectional structural schematic diagram of the centralizer with a wellbore trimming function according to the present utility model is shown;

[0019] Figure 4 The second sectional structural schematic diagram of the centralizer with a wellbore trimming function according to the present utility model is shown;

[0020] Description of reference numerals: 1. Connecting seat; 2. Regulation assembly; 201. First motor; 202. Threaded rod; 3. Limiting assembly; 301. Limiting rod; 302. Fixed bolt; 4. Rotating assembly; 401. Connecting ring; 402. Second motor; 403. First rotating shaft; 404. Adjusting gear; 405. Gear rack; 5. Adjusting assembly; 501. First connecting block; 502. Connecting handle; 6. Connecting assembly; 601. Second connecting block; 602. Connecting plate; 7. Trimming assembly; 701. Third motor; 702. Second rotating shaft; 703. Grinding block. Detailed implementation manners

[0021] The present utility model will be further described below with reference to the drawings and embodiments.

[0022] Please refer to Figure 1 , the present utility model provides an embodiment: a centralizer with a wellbore trimming function, including a connecting seat 1, a regulation assembly 2, a limiting assembly 3, a rotating assembly 4, an adjusting assembly 5, a connecting assembly 6 and a trimming assembly 7; a regulation assembly 2 with a regulation function is arranged above the connecting seat 1, a limiting assembly 3 with a limiting function is arranged inside the connecting seat 1, a rotating assembly 4 with a rotating function is arranged outside the regulation assembly 2, an adjusting assembly 5 with an adjusting function is arranged on one side of the rotating assembly 4, a connecting assembly 6 with a connecting function is arranged at one end of the adjusting assembly 5, and a trimming assembly 7 with a trimming function is arranged inside the connecting assembly 6.

[0023] Please refer to Figures 2-4, in this embodiment, the control component 2 includes a first motor 201 and a threaded rod 202; a first motor 201 is arranged above the connecting seat 1, the output end of the first motor 201 is provided with a threaded rod 202, and there are two sections of opposite threads on the threaded rod 202. During use, by starting the first motor 201 to drive the threaded rod 202 to rotate. The limiting component 3 includes a limiting rod 301 and a fixing bolt 302; the limiting rod 301 is arranged inside the connecting seat 1, and the fixing bolt 302 is arranged inside the connecting seat 1. The fixing bolt 302 is threadedly connected to the connecting seat 1. During use, the position of the sleeve can be fixed by rotating the fixing bolt 302. The rotating component 4 includes a connecting ring 401, a second motor 402, a first rotating shaft 403, an adjusting gear 404 and a gear rack 405; a connecting ring 401 is arranged outside the threaded rod 202, the connecting ring 401 is threadedly connected to the threaded rod 202, a second motor 402 is arranged above the connecting ring 401, the output end of the second motor 402 is provided with a first rotating shaft 403, an adjusting gear 404 is arranged outside the first rotating shaft 403, a gear rack 405 is arranged outside the connecting ring 401, the adjusting gear 404 is meshed with the gear rack 405, and the gear rack 405 is rotatably connected to the connecting ring 401 through a bearing. During use, the connecting ring 401 is driven to move up and down by the rotation of the threaded rod 202, the position of the connecting ring 401 is limited by the limiting rod 301, the second motor 402 is started to drive the first rotating shaft 403 to rotate, the adjusting gear 404 is driven to rotate by the rotation of the first rotating shaft 403, and the gear rack 405 is driven to rotate by the rotation of the adjusting gear 404.

[0024] The adjusting assembly 5 includes a first connecting block 501 and a connecting handle 502; a first connecting block 501 is provided on one side of the connecting ring 401, a connecting handle 502 is provided on one side of the first connecting block 501, and the connecting handle 502 is rotatably connected to the first connecting block 501. During use, the first connecting block 501 is driven to move up and down by the up and down movement of the connecting ring 401, and the connecting handle 502 is driven to rotate by the up and down movement of the first connecting block 501. The connecting assembly 6 includes a second connecting block 601 and a connecting plate 602; a second connecting block 601 is provided at one end of the connecting handle 502, the second connecting block 601 is rotatably connected to the connecting handle 502, and a connecting plate 602 is provided below the second connecting block 601. During use, the connecting plate 602 is driven to linearly move by the rotation of the connecting handle 502. The trimming assembly 7 includes a third motor 701, a second rotating shaft 702, and a grinding block 703; a third motor 701 is provided above the connecting plate 602, the output end of the third motor 701 is provided with a second rotating shaft 702, and a grinding block 703 is provided on the outer side of the second rotating shaft 702. During use, the grinding block 703 is driven to linearly move by the linear movement of the connecting plate 602, so that the size of the centralizer can be adjusted according to the size of the wellbore. The first connecting block 501 is driven to rotate by the rotation of the gear rack 405, so as to drive the grinding block 703 to rotate around the casing as the center. By starting the third motor 701, the second rotating shaft 702 is driven to rotate, and the grinding block 703 is driven to rotate by the rotation of the second rotating shaft 702, so as to trim the inner wall of the wellbore and prevent the unevenness of the inner wall of the wellbore from affecting the erection work of the casing.

[0025] When working, first, the first motor 201 is started to drive the threaded rod 202 to rotate, and the connecting ring 401 is driven to move up and down by the rotation of the threaded rod 202.

[0026] After the connecting ring 401 moves up and down, the second motor 402 is started to drive the first rotating shaft 403 to rotate. The adjusting gear 404 is driven to rotate by the rotation of the first rotating shaft 403, the gear rack 405 is driven to rotate by the rotation of the adjusting gear 404. The first connecting block 501 is driven to move up and down by the up and down movement of the connecting ring 401, the connecting handle 502 is driven to rotate by the up and down movement of the first connecting block 501, the connecting plate 602 is driven to linearly move by the rotation of the connecting handle 502, and the grinding block 703 is driven to linearly move by the linear movement of the connecting plate 602, so that the size of the centralizer can be adjusted according to the size of the wellbore.

[0027] After the position of the grinding block 703 is adjusted, the first connecting block 501 is driven to rotate by the rotation of the gear rack 405, so as to drive the grinding block 703 to rotate around the casing as the center. By starting the third motor 701, the second rotating shaft 702 is driven to rotate, and the grinding block 703 is driven to rotate by the rotation of the second rotating shaft 702, so as to trim the inner wall of the wellbore.

[0028] Through the above steps, the position of the regulating component 2 of the connecting seat 1 is used for fixing, the limiting component 3 is used for fixing the casing, the regulating component 2 is started to drive the rotating component 4 to move up and down, the rotating component 4 moving up and down drives the adjusting component 5 to rotate, and the rotation of the adjusting component 5 can drive the connecting component 6 to linearly move. The size of the centralizer can be adjusted according to the size of the wellbore so that the casing is located at the central position of the wellbore. The rotation of the rotating component 4 can drive the trimming component 7 to rotate with the casing as the center of the circle. At the same time, the trimming component 7 is started so that the trimming component 7 rotates and trims the inner wall of the wellbore to prevent the unevenness of the inner wall of the wellbore from affecting the erection work of the casing.

[0029] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A centralizer with a wellbore dressing function, comprising a connecting seat (1); characterized in that: It also includes a control component (2), a limit component (3), a rotation component (4), an adjustment component (5), a connection component (6) and a trimming component (7); above the connection seat (1) is provided with a control component (2) with a control function, inside the connection seat (1) is provided with a limit component (3) with a limiting function, outside the control component (2) is provided with a rotation component (4) with a rotation function, on one side of the rotation component (4) is provided with an adjustment component (5) with an adjustment function, at one end of the adjustment component (5) is provided with a connection component (6) with a connection function, and inside the connection component (6) is provided with a trimming component (7); the control component (2) includes a first motor (201) and a threaded rod (202); above the connection seat (1) is provided with a first motor (201), the output end of the first motor (201) is provided with a threaded rod (202), and there are two opposite threads on the threaded rod (202); the limit component (3) includes a limit rod (301) and a fixing bolt (302); inside the connection seat (1) is provided with a limit rod (301), and inside the connection seat (1) is provided with a fixing bolt (302), and the fixing bolt (302) is threadedly connected to the connection seat (1); the rotation component (4) includes a connection ring (401), a second motor (402), a first rotating shaft (403), an adjustment gear (404) and a gear rack (405); outside the threaded rod (202) is provided with a connection ring (401), the connection ring (401) is threadedly connected to the threaded rod (202), above the connection ring (401) is provided with a second motor (402), the output end of the second motor (402) is provided with a first rotating shaft (403), outside the first rotating shaft (403) is provided with an adjustment gear (404), outside the connection ring (401) is provided with a gear rack (405), the adjustment gear (404) is meshed with the gear rack (405), and the gear rack (405) is rotatably connected to the connection ring (401) through a bearing; the adjustment component (5) includes a first connection block (501) and a connection handle (502); on one side of the connection ring (401) is provided with a first connection block (501), on one side of the first connection block (501) is provided with a connection handle (502), and the connection handle (502) is rotatably connected to the first connection block (501); the connection component (6) includes a second connection block (601) and a connection plate (602); at one end of the connection handle (502) is provided with a second connection block (601), the second connection block (601) is rotatably connected to the connection handle (502), and below the second connection block (601) is provided with a connection plate (602); the trimming component (7) includes a third motor (701), a second rotating shaft (702) and a grinding block (703); above the connection plate (602) is provided with a third motor (701), the output end of the third motor (701) is provided with a second rotating shaft (702), and outside the second rotating shaft (702) is provided with a grinding block (703).

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