CN112012672B

CN112012672B - Casing centralizer for drilling

Info

Publication number: CN112012672B
Application number: CN202011127737.1A
Authority: CN
Inventors: 于洪锋; 周玉华; 董惠芹; 秦军彦; 赵兆霞; 孙志鹏
Original assignee: Drilling Tool Factory Of Gubang Petroleum Equipment Co ltd Shengli Oilfield; Shengli Oil Field Solid State Petroleum Equipment Co ltd
Current assignee: Drilling Tool Factory Of Gubang Petroleum Equipment Co ltd Shengli Oilfield; Shengli Oil Field Solid State Petroleum Equipment Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2020-12-29
Anticipated expiration: 2040-10-21
Also published as: CN112012672A

Abstract

The invention discloses a casing centralizer for drilling, which relates to the technical field of centralizers and comprises an upper clamping block and a lower clamping block, wherein first grooves are formed in the inner walls of the upper clamping block and the lower clamping block, first connecting blocks matched with the first grooves are inserted into the first grooves, one ends of the first connecting blocks, which are positioned outside the first grooves, are fixedly connected with the centralizers, connecting mechanisms which are inserted and connected with the first connecting blocks are arranged on the side walls of the left end and the right end of each first groove, cavities are formed in the upper clamping block and the lower clamping block, two transmission mechanisms penetrate through the side walls of the cavities in a rotating mode, the two transmission mechanisms are respectively in transmission connection with the two connecting mechanisms, driving mechanisms are arranged in the cavities, the two transmission mechanisms are in transmission connection with the driving mechanisms, one ends of the driving mechanisms are positioned outside the cavities, and two second connecting blocks are fixedly connected to the upper ends of the lower. The centralizer is convenient to mount and dismount, the working efficiency is improved, and in addition, the centralizer can be used for pipelines with different sizes, and the application range of the centralizer is enlarged.

Description

Casing centralizer for drilling

Technical Field

The invention relates to the technical field of centralizers, in particular to a casing centralizer for drilling.

Background

The centralizer belongs to a well cementing tool, has simple manufacture, beautiful structure, firmness, durability and large centralizing force, overcomes the defect that the prior welding type centralizer is easy to be detached from welding, and is a centralizer capable of ensuring the well drilling and cementing quality.

The existing centralizer is convenient to mount and dismount when in use, the efficiency of construction is seriously affected, and in addition, the existing centralizer can only be used for pipelines of specified sizes when in use, so that the application range of the centralizer is small, and therefore the casing centralizer for drilling is provided.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a casing centralizer for drilling.

In order to achieve the purpose, the invention adopts the following technical scheme:

a casing centralizer for drilling comprises an upper clamping block and a lower clamping block, wherein first grooves are formed in the inner walls of the upper clamping block and the lower clamping block, first connecting blocks matched with the first grooves are inserted into the first grooves, one ends of the first connecting blocks, which are positioned outside the first grooves, are fixedly connected with a centralizing block, connecting mechanisms which are inserted and connected with the first connecting blocks are arranged on the side walls of the left end and the right end of each first groove, cavities are formed in the upper clamping block and the lower clamping block, two transmission mechanisms are rotatably penetrated on the side walls of the cavities and are respectively in transmission connection with the two connecting mechanisms, driving mechanisms are arranged in the cavities and are in transmission connection with the driving mechanisms, one ends of the driving mechanisms are positioned outside the cavities, two second connecting blocks are fixedly connected to the upper ends of the lower clamping blocks, two second grooves are formed in the lower ends of the upper clamping block, the two second connecting blocks are respectively inserted into second grooves matched with the second connecting blocks, third grooves are formed in the side walls of the second grooves, first fixing pulleys are fixedly connected to the side wall of one end, away from the second grooves, of each third groove, inserting mechanisms are arranged in the third grooves and are connected with the second connecting blocks in an inserting mode, control mechanisms are arranged in the upper clamping blocks and are communicated with the two third grooves, and the two ends of each control mechanism respectively penetrate through the two first fixing pulleys in a sliding mode and are fixedly connected with the corresponding inserting mechanisms.

Preferably, the connecting mechanism includes a fourth groove disposed on the side wall of the first groove, a threaded rod is rotatably connected to the inner wall of one end of the fourth groove, which is far away from the first groove, a first bevel gear fixedly connected to one end of the threaded rod, which is close to the first groove, the first bevel gear is in transmission connection with the transmission mechanism, a sliding plate is in threaded connection with the threaded rod, the upper end and the lower end of the sliding plate are respectively in sliding connection with the top surface and the bottom of the fourth groove, a first positioning block is fixedly connected to the side wall of one end of the sliding plate, which is close to the first groove, and the first positioning block is inserted into the first connecting block.

Preferably, the top surface and the bottom of the fourth groove are both provided with sliding grooves, sliding blocks matched with the sliding grooves are arranged in the sliding grooves, and the two sliding blocks are fixedly connected with the upper end and the lower end of the sliding plate respectively.

Preferably, the transmission mechanism comprises a first rotating shaft which is rotatably arranged through the side wall of the chamber, one end of the first rotating shaft, which is located in the fourth groove, is fixedly connected with a second bevel gear, the second bevel gear is meshed with the first bevel gear, one end of the first rotating shaft, which is located in the chamber, is fixedly connected with a third bevel gear, and the third bevel gear is in transmission connection with the driving mechanism.

Preferably, the driving mechanism comprises a second rotating shaft rotatably arranged in the chamber, the second rotating shaft is coaxially and fixedly connected with two fourth bevel gears, the two fourth bevel gears are respectively meshed with the two third bevel gears, a worm wheel is coaxially and fixedly connected to the second rotating shaft between the two fourth bevel gears, the worm wheel is meshed with a worm, and the worm is rotatably arranged to penetrate through the side wall of the chamber.

Preferably, the inserting mechanism comprises a plurality of elastic assemblies fixedly arranged in the third groove, one end of each elastic assembly close to the second groove is fixedly connected with the same movable plate, one end side wall of each movable plate close to the second groove is fixedly connected with a second positioning block, the second positioning blocks are inserted into the second connecting blocks, and the movable plates are fixedly connected with the control mechanism.

Preferably, the elastic assembly comprises a telescopic rod fixedly arranged between the third groove and the moving plate, a spring is sleeved on the telescopic rod, and two ends of the spring are fixedly connected with the inner wall of the third groove and the side wall of the moving plate respectively.

Preferably, control mechanism is including setting up the interface channel in last fixture block, the both ends of interface channel set up with two third recess intercommunications respectively, two second fixed pulleys of fixedly connected with on the top surface of interface channel, second fixed pulley and the first fixed pulley that corresponds on sliding connection have the pull wire, the one end that the pull wire is located the third recess and the lateral wall fixed connection of movable plate, the one end through connection channel's that the movable plate was kept away from to the pull wire top surface sets up and extends to its outside, two the one end fixedly connected with handle outside the pull wire is located the interface channel.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the connection and separation of the first connecting block and the upper fixture block or the lower fixture block can be controlled through the connecting mechanism, the transmission mechanism and the driving mechanism, so that the connection and separation of the centering block and the upper fixture block and the lower fixture block can be controlled, the centering block can be conveniently replaced, and then when the centering device is used, the centering block matched with the centering block can be installed according to the size of a pipeline, so that the centering device can be suitable for centering pipelines with different sizes, and the application range of the centering device can be effectively enlarged.

2. According to the centralizer, the upper clamping block and the lower clamping block can be controlled to be connected or separated by pulling the handle in the control mechanism through the control mechanism and the inserting mechanism, and compared with the situation that the upper clamping block and the lower clamping block are connected through threaded connection in the prior art, the centralizer is prevented from being inconvenient to install and disassemble due to corrosion, so that the installing and disassembling efficiency of the centralizer can be effectively guaranteed, and the working efficiency can be effectively improved.

Drawings

FIG. 1 is a perspective view of a casing centralizer for drilling according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of FIG. 1 at B;

fig. 4 is a partially enlarged view of fig. 1 at C.

In the figure: the device comprises an upper clamping block 1, a lower clamping block 2, a first groove 3, a first connecting block 4, a centering block 5, a handle 6, a cavity 7, a second groove 8, a second connecting block 9, a third groove 10, a first fixed pulley 11, a fourth groove 12, a threaded rod 13, a first bevel gear 14, a sliding plate 15, a first positioning block 16, a sliding groove 17, a sliding block 18, a first rotating shaft 19, a second bevel gear 20, a third bevel gear 21, a second rotating shaft 22, a fourth bevel gear 23, a worm gear 24, a worm screw 25, a movable plate 26, a second positioning block 27, a telescopic rod 28, a spring 29, a connecting channel 30, a second fixed pulley 31 and a traction line 32.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a casing centralizer for drilling comprises an upper fixture block 1 and a lower fixture block 2, wherein the inner walls of the upper fixture block 1 and the lower fixture block 2 are both provided with a first groove 3, a first connecting block 4 matched with the first groove 3 is inserted into the first groove 3, one end of the first connecting block 4, which is positioned outside the first groove 3, is fixedly connected with a centralizing block 5, it should be noted that the centralizing block 5 is the prior art, and is not described herein, as can be seen from fig. 1, the two centralizing blocks 5 are in contact connection in an abutting manner to form a circular ring, the side walls of the left and right ends of the first groove 3 are both provided with connecting mechanisms inserted and connected with the first connecting block 4, a cavity 7 is arranged in the upper fixture block 1 and the lower fixture block 2, two transmission mechanisms are rotatably penetrated on the side wall of the cavity 7, the two transmission mechanisms are respectively in transmission connection with the two connecting mechanisms, a driving mechanism is arranged in the cavity 7, and both transmission mechanisms are in, one end of the driving mechanism is located outside the cavity 7, two second connecting blocks 9 are fixedly connected to the upper end of the lower fixture block 2, the lower end of the upper fixture block 1 is provided with two second grooves 8, the two second connecting blocks 9 are respectively inserted into the second grooves 8 matched with the two second connecting blocks, a third groove 10 is formed in the side wall of the second groove 8, a first fixed pulley 11 is fixedly connected to the side wall of one end, far away from the second groove 8, of the third groove 10, an inserting mechanism is arranged in the third groove 10, the inserting mechanism is connected with the second connecting blocks 9 in an inserting mode, a control mechanism which is communicated with the two third grooves 10 is arranged in the upper fixture block 1, and the two ends of the control mechanism respectively slide through the two first fixed pulleys 11 and are fixedly connected with the corresponding inserting mechanism.

Wherein, the connecting mechanism comprises a fourth groove 12 arranged on the side wall of the first groove 3, a threaded rod 13 is rotatably connected on the inner wall of one end of the fourth groove 12 far away from the first groove 3, a first bevel gear 14 is fixedly connected on one end of the threaded rod 13 near the first groove 3, the first bevel gear 14 is in transmission connection with the transmission mechanism, a sliding plate 15 is in threaded connection with the threaded rod 13, the upper end and the lower end of the sliding plate 15 are respectively in sliding connection with the top surface and the bottom of the fourth groove 12, a first positioning block 16 is fixedly connected on the side wall of one end of the sliding plate 15 near the first groove 3, the first positioning block 16 is inserted in the first connecting block 4, explained that the first connecting block 4 is provided with a first positioning hole which is communicated from left to right, the first positioning block 16 is inserted in the first positioning hole matched with the first positioning block, the first connecting block 4 can be positioned in the vertical direction, and the first connecting block 4 can be positioned in the horizontal direction through the action of the first groove 3, thereby enabling the first connecting block 4 to be stably connected with the upper fixture 1 or the lower fixture 2.

More specifically, the top surface and the bottom of the fourth groove 12 are both provided with sliding grooves 17, the sliding grooves 17 are provided with sliding blocks 18 matched with the sliding grooves 17, the two sliding blocks 18 are respectively and fixedly connected with the upper end and the lower end of the sliding plate 15, and it should be noted that the sliding plate 15 is prevented from colliding with the first bevel gear 14 by the limitation of the sliding grooves 17.

The transmission mechanism comprises a first rotating shaft 19 which is rotatably arranged through the side wall of the chamber 7, a second bevel gear 20 is fixedly connected to one end of the first rotating shaft 19, which is positioned in the fourth groove 12, the second bevel gear 20 is meshed with the first bevel gear 14, a third bevel gear 21 is fixedly connected to one end of the first rotating shaft 19, which is positioned in the chamber 7, and the third bevel gear 21 is in transmission connection with the driving mechanism.

The driving mechanism comprises a second rotating shaft 22 which is rotatably arranged in the chamber 7, two fourth bevel gears 23 are coaxially and fixedly connected to the second rotating shaft 22, the two fourth bevel gears 23 are respectively meshed with the two third bevel gears 21, a worm wheel 24 is coaxially and fixedly connected to the second rotating shaft 22 between the two fourth bevel gears 23, a worm 25 is meshed with the worm wheel 24, and the worm 25 is rotatably arranged to penetrate through the side wall of the chamber 7.

Wherein, grafting mechanism is including fixed a plurality of elastic component that set up in third recess 10, a plurality of elastic component are close to the same movable plate 26 of one end fixedly connected with of second recess 8, fixedly connected with second locating piece 27 on the one end lateral wall that movable plate 26 is close to second recess 8, second locating piece 27 is inserted and is located in second connecting block 9, movable plate 26 and control mechanism fixed connection, it needs to explain, be equipped with the second locating hole of left right side intercommunication on the lateral wall of second connecting block 9, second locating piece 27 is inserted and is established to the second locating hole rather than matching, can fix a position second connecting block 9 on vertical direction, second connecting block 9 is inserted and is located second recess 8 can be fixed a position it on the horizontal direction, then can make upper fixture block 1 and lower fixture block 2 stable connection.

More specifically, the elastic component includes an expansion link 28 fixedly disposed between the third groove 10 and the moving plate 26, a spring 29 is sleeved on the expansion link 28, and two ends of the spring 29 are respectively and fixedly connected with the inner wall of the third groove 10 and the side wall of the moving plate 26.

Wherein, control mechanism is including setting up the interface channel 30 in last fixture block 1, the both ends of interface channel 30 communicate the setting with two third recesses 10 respectively, two second fixed pulleys 31 of fixedly connected with on the top surface of interface channel 30, sliding connection has the pull wire 32 on second fixed pulley 31 and the first fixed pulley 11 that corresponds rather than, the one end that pull wire 32 is located third recess 10 and the lateral wall fixed connection of movable plate 26, the one end that pull wire 32 keeps away from movable plate 26 runs through the top surface setting of interface channel 30 and extends to its outside, two pull wires 32 are located the outer one end fixedly connected with handle 6 of interface channel 30.

In the invention, when in use, the worm 25 is rotated manually, the worm 25 is meshed with the worm wheel 24 to drive the second rotating shaft 22 and the fourth bevel gear 23 to rotate synchronously, the fourth bevel gear 23 is meshed with the third bevel gear 21 to drive the first rotating shaft 19 and the second bevel gear 20 to rotate synchronously, the second bevel gear 20 is meshed with the first bevel gear 14 to drive the threaded rod 13 to rotate, the threaded rod 13 is arranged on the threaded rod 13 in a threaded manner, the threaded rod 13 can drive the sliding plate 15 to translate through rotation, and then the first positioning block 16 can be driven to move, the connection and the separation of the threaded rod 13 and the first connecting block 4 can be controlled, the fixed installation of the centering block 5 is realized during connection, the centering block 5 is detached during separation, so that the centering block 5 can be conveniently replaced, the centering block 5 with the size which can not be replaced according to the size of a pipeline, can effectual expansion centralizer's application range, in addition, through pulling handle 6, effect through pull wire 32, can drive movable plate 26 and move, be convenient for make second locating piece 27 and the separation of second connecting block 9, can make second connecting block 9 extract from second recess 8, be convenient for go up fixture block 1 and lower fixture block 2 and separate, otherwise, cancel the effort to handle 6, at spring 29's effect, be convenient for insert second locating piece 27 to second connecting block 9 in, then can realize fixture block 1 and lower fixture block 2's stable connection.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A casing centralizer for drilling comprises an upper clamping block (1) and a lower clamping block (2), and is characterized in that first grooves (3) are formed in the inner walls of the upper clamping block (1) and the lower clamping block (2), first connecting blocks (4) matched with the first grooves (3) are inserted into the first grooves (3), one ends, located outside the first grooves (3), of the first connecting blocks (4) are fixedly connected with centralizing blocks (5), connecting mechanisms connected with the first connecting blocks (4) in an inserting mode are arranged on the side walls of the left end and the right end of each first groove (3), cavities (7) are formed in the upper clamping block (1) and the lower clamping block (2), two transmission mechanisms penetrate through the side walls of the cavities (7) in a rotating mode, the two transmission mechanisms are connected with the two connecting mechanisms in a driving mode respectively, driving mechanisms are arranged in the cavities (7), and are connected with the driving mechanisms in a driving mode, one end of the driving mechanism is positioned outside the chamber (7), the upper end of the lower fixture block (2) is fixedly connected with two second connecting blocks (9), the lower end of the upper clamping block (1) is provided with two second grooves (8), two second connecting blocks (9) are respectively inserted into the second grooves (8) matched with the second connecting blocks, a third groove (10) is arranged on the side wall of the second groove (8), a first fixed pulley (11) is fixedly connected on the side wall of one end of the third groove (10) far away from the second groove (8), an inserting mechanism is arranged in the third groove (10), the inserting mechanism is inserted and connected with the second connecting block (9), a control mechanism communicated with the two third grooves (10) is arranged in the upper clamping block (1), two ends of the control mechanism respectively penetrate through the two first fixed pulleys (11) in a sliding mode and are fixedly connected with the corresponding inserting mechanisms.

2. A casing centraliser for drilling according to claim 1, wherein the connection means comprise a fourth recess (12) arranged in a side wall of the first recess (3), a threaded rod (13) is rotatably connected on the inner wall of one end of the fourth groove (12) far away from the first groove (3), one end of the threaded rod (13) close to the first groove (3) is fixedly connected with a first bevel gear (14), the first bevel gear (14) is in transmission connection with a transmission mechanism, the threaded rod (13) is in threaded connection with a sliding plate (15), the upper end and the lower end of the sliding plate (15) are respectively connected with the top surface and the bottom of the fourth groove (12) in a sliding way, the side wall of one end, close to the first groove (3), of the sliding plate (15) is fixedly connected with a first positioning block (16), and the first positioning block (16) is inserted into the first connecting block (4).

3. A casing centralizer for drilling according to claim 2, characterized in that the top and bottom of the fourth groove (12) are provided with slide grooves (17), and the slide grooves (17) are provided with matching slide blocks (18), and the two slide blocks (18) are respectively fixedly connected with the upper and lower ends of the slide plate (15).

4. A casing centralizer for drilling according to claim 3, wherein the transmission mechanism comprises a first rotating shaft (19) rotatably arranged through the side wall of the chamber (7), a second bevel gear (20) is fixedly connected to one end of the first rotating shaft (19) in the fourth groove (12), the second bevel gear (20) is engaged with the first bevel gear (14), a third bevel gear (21) is fixedly connected to one end of the first rotating shaft (19) in the chamber (7), and the third bevel gear (21) is in transmission connection with the driving mechanism.

5. A casing centralizer for drilling according to claim 4, wherein the driving mechanism comprises a second rotating shaft (22) rotatably arranged in the chamber (7), two fourth bevel gears (23) are coaxially and fixedly connected to the second rotating shaft (22), the two fourth bevel gears (23) are respectively meshed with the two third bevel gears (21), a worm wheel (24) is coaxially and fixedly connected to the second rotating shaft (22) between the two fourth bevel gears (23), a worm (25) is meshed with the worm wheel (24), and the worm (25) is rotatably arranged through the side wall of the chamber (7).

6. A casing centralizer for drilling according to claim 1, wherein the plugging mechanism comprises a plurality of elastic components fixedly arranged in the third groove (10), one end of each elastic component close to the second groove (8) is fixedly connected with a same movable plate (26), one end of each movable plate (26) close to the second groove (8) is fixedly connected with a second positioning block (27), the second positioning blocks (27) are plugged in the second connecting blocks (9), and the movable plates (26) are fixedly connected with the control mechanism.

7. A casing centralizer for drilling according to claim 6, wherein the elastic assembly comprises a telescopic rod (28) fixedly arranged between the third groove (10) and the moving plate (26), a spring (29) is sleeved on the telescopic rod (28), and two ends of the spring (29) are respectively and fixedly connected with the inner wall of the third groove (10) and the side wall of the moving plate (26).

8. A casing centralizer for drilling according to claim 7, characterised in that the control means comprise a connection channel (30) arranged in the upper block (1), two ends of the connecting channel (30) are respectively communicated with the two third grooves (10), two second fixed pulleys (31) are fixedly connected on the top surface of the connecting channel (30), the second fixed pulley (31) and the corresponding first fixed pulley (11) are connected with a traction line (32) in a sliding way, one end of the traction wire (32) positioned in the third groove (10) is fixedly connected with the side wall of the moving plate (26), one end of each traction wire (32) far away from the moving plate (26) penetrates through the top surface of the connecting channel (30) and extends to the outside of the connecting channel, and one end, located outside the connecting channel (30), of each traction wire (32) is fixedly connected with a handle (6).