CN116556855A - Casing centralizer for radial drilling convenient to install - Google Patents
Casing centralizer for radial drilling convenient to install Download PDFInfo
- Publication number
- CN116556855A CN116556855A CN202310599121.1A CN202310599121A CN116556855A CN 116556855 A CN116556855 A CN 116556855A CN 202310599121 A CN202310599121 A CN 202310599121A CN 116556855 A CN116556855 A CN 116556855A
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- arc
- plate
- arc splint
- centralizer
- adjusting
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- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a sleeve centralizer for radial drilling, which is convenient to install, and comprises two arc-shaped clamping plates, wherein a cylindrical channel is enclosed inside the two arc-shaped clamping plates, protection plates are arranged on the side surfaces of the arc-shaped clamping plates, two protection plates are arranged between the two protection plates to form a hollow groove, antifriction devices are arranged inside the hollow groove, three antifriction devices are vertically arranged in the hollow groove, a front vertical plate is arranged at the front end of the arc-shaped clamping plate, a rear vertical plate is arranged at the rear end of the arc-shaped clamping plate, threaded holes are formed in the rear vertical plate, a limiting component is arranged at the rear end of the rear vertical plate, an anti-skid rubber cushion is arranged on the inner side of the arc-shaped clamping plate, a sealing rubber cushion is arranged at the upper end of the arc-shaped clamping plate, and an adjusting device is arranged at the front end of the arc-shaped clamping plate.
Description
Technical Field
The invention relates to the field of casing centralizers, and discloses a casing centralizer for radial drilling, which is convenient to install.
Background
The centralizer is a cementing tool with simple manufacture, attractive structure, firmness and durability and high centralizing force. The well centralizer overcomes the defect that the original welding centralizer is easy to weld, is a centralizer capable of guaranteeing drilling and well cementation quality, is various, can be divided into roller type, sliding block type, automatic reversing type and the like, and is a device which is arranged on a casing string to enable the casing string to be centered in a well hole along with the development of the well drilling technology, so that the well cementation quality of a highly-inclined well, a directional well and a horizontal well becomes a key technical problem of the development of the directional well technology.
The patent number among the prior art is CN 218407346U's patent introduces a sleeve pipe elasticity centralizer, relate to oil gas well cementation technical field, through set up a plurality of elasticity righting strips at last end ring and lower end ring support, the both sides limit of the middle part position of elasticity righting strip all is provided with mutual symmetrical widened portion, the area of contact with the wall of a well has been increased, play effectual supporting role, prevent scraping stratum and form the keyway, and the side of widened portion is formed with the flange of inwards bending, make widened portion be sled form, effectively prevent to take the wall of a well at centralizer in-process, guarantee the smooth whereabouts of pipe cluster, current sleeve pipe elasticity centralizer bow piece that exists among the prior art is little with the wall of a well area of contact, easy the wall of a well produces the keyway, and take the wall of a well easily in the in-process of going into, influence the technical problem of going into smoothly of pipe cluster.
However, the prior art patents suffer from several drawbacks:
(1) When the prior art is used, the centralizer is sleeved from the top end of the sleeve by using the crane and then is adjusted to a designated position when being installed, then the centralizer is fixed on the sleeve by using tools such as screws, and the top of the sleeve is also required to be removed when the centralizer is detached, so that the connection is not fast enough, time is wasted, and the connection is not firm enough, so that the pipeline is easy to loosen and incline.
(2) When the prior art is used, the caliber of the centralizer is single in specification, the size of the centralizer cannot be adjusted, the centralizer can be only installed on a sleeve with a specific caliber, the external diameter of the centralizer is fixed, the centralizer can only be suitable for a specific well, and the applicability is poor.
(3) When the prior art patent is used, a friction reducing device is not arranged, the centralizer is placed in the well, friction is generated when the centralizer contacts with the well wall, the falling speed of the centralizer is slowed down, the centralizer is lowered through Cheng Huanman, and the centralizer can be blocked when the well wall is not paved or the well is bent.
Disclosure of Invention
The invention aims to overcome the technical defects, and provides the radial drilling casing centralizer which is convenient to install, can adjust the size and can reduce friction.
In order to solve the technical problems, the invention provides the following technical scheme: radial well drilling is with sleeve pipe centralizer convenient to installation, including arc splint, its characterized in that: the novel anti-skid arc clamp comprises an arc clamp body, and is characterized in that two arc clamp plates are arranged, a cylindrical channel is formed by encircling the inside of each arc clamp plate, a protection plate is arranged on the side face of each arc clamp plate, two protection plates are arranged, an empty groove is formed in the middle of each protection plate, an antifriction device is arranged in each empty groove, three antifriction devices are arranged in the empty grooves vertically, a front vertical plate is arranged at the front end of each arc clamp plate, a rear vertical plate is arranged at the rear end of each arc clamp plate, threaded holes are formed in the rear vertical plate, a limiting assembly is arranged at the rear vertical plate, an anti-skid rubber cushion is arranged on the inner side of each arc clamp plate, a sealing rubber cushion is arranged above the corresponding anti-skid rubber cushion, an adjusting device is arranged at the front end of each arc clamp plate, and the rear end of the adjusting device is an arc surface.
Further, spacing subassembly includes concave type mounting bracket, fixedly connected with dead lever between the inside wall of concave type mounting bracket, two symmetrical springs have been cup jointed on the surface of dead lever, the surface sliding connection of dead lever has two symmetrical movable plates, the one end and the inside wall fixed connection of concave type mounting bracket of spring, the other end and the corresponding fixed surface of movable plate of spring are connected, the fixed surface of movable plate is connected with the clamping rod.
Further, antifriction device includes the telescopic link, the telescopic link top is equipped with the pulley groove, the telescopic link outside is equipped with reset spring, and reset spring noose telescopic link, reset spring is located between pulley groove and the arc splint, the inside pulley groove that is equipped with of pulley groove, pulley groove rotates to be connected.
Further, adjusting device includes the adjusting column, the inside cavity that is equipped with of adjusting column, the inside adjusting screw that is equipped with of cavity, adjusting screw rotates and connects the adjusting column, the adjusting screw upper end is equipped with the dwang, the stopper has been cup jointed to the adjusting screw.
Further, the clamping rod is connected with the threaded hole in a clamping mode, a moving groove is formed in the top of the concave mounting frame, the inner wall of the moving groove is connected with a pulling plate in a sliding mode, and the bottom of the pulling plate is fixedly connected with the top of the moving plate.
Further, the pulley groove is of a U-shaped structure, and two ends of the reset spring are respectively connected with the pulley groove and the arc clamping plate.
Further, the stopper front side both ends are equipped with the drive arm, and the drive arm rotates and connects the stopper, drive arm keeps away from adjusting post one end and rotates to be connected in the riser.
Further, the adjusting column is located between the front vertical plates, holes are formed in the front vertical plates and the adjusting column, the holes correspond to each other in pairs, connecting rods are arranged in the holes, and baffle plates are arranged at two ends of the connecting rods.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, the problem of slow installation of the existing centralizer is solved by arranging the separated arc-shaped clamping plates, quick installation and reinforcement can be realized, the front ends of the arc-shaped clamping plates are provided with the adjusting devices, the distance between the two arc-shaped clamping plates can be adjusted, the rear ends of the arc-shaped clamping plates are provided with the fastening mechanisms, the pipeline is placed in from the opening at the rear ends of the arc-shaped clamping plates, the arc-shaped clamping plates are clamped through the adjusting devices, then the rear vertical plates are connected together through the fastening screws, and further the rear sides of the arc-shaped clamping plates are reinforced.
(2) The invention solves the problem that the existing centralizer can not be adjusted by arranging the adjusting device, can freely adjust the gap between the arc clamping plates, adjusts the adjusting device, and enables the arc clamping plates to slide on the connecting rod, thereby realizing the adjustment of the arc clamping plates according to pipelines with different sizes.
(3) According to the invention, the friction reduction device is arranged, so that the problem that friction of the existing centralizer cannot be reduced is solved, friction between the centralizer and a well wall can be reduced by using the pulley, the pulley on the friction reduction device is contacted with the well wall, friction force is reduced, the pulley stretches and contracts, and the centralizer can be adaptively adjusted according to the well wall, so that the centralizer cannot be clamped in the well.
Drawings
FIG. 1 is a schematic three-dimensional view of a casing centralizer for radial drilling with ease of installation according to the present invention;
FIG. 2 is a top view of a casing centralizer for radial drilling of the present invention for ease of installation;
FIG. 3 is a side view of a casing centralizer for radial drilling of the present invention for ease of installation;
FIG. 4 is an enlarged view of a portion of the construction of FIG. 1 of a casing centralizer for radial drilling of the present invention for ease of installation;
FIG. 5 is an enlarged view of a portion of the construction of FIG. 2 at B of a casing centralizer for radial drilling that facilitates installation of the present invention;
FIG. 6 is a block diagram of a spacing assembly of a casing centralizer for radial drilling of the present invention for ease of installation;
wherein: 1. an arc clamping plate; 101. a front riser; 102. a rear riser; 103. an anti-slip rubber pad; 2. a protection plate; 3. an antifriction device; 301. a telescopic rod; 302. pulley grooves; 303. a return spring; 304. a pulley; 4. an adjusting device; 401. an adjusting column; 402. adjusting a screw; 403. a rotating lever; 404. a limiting block; 405. a transmission arm; 406. a connecting rod; 407. a baffle; 5. a threaded hole; 6. sealing rubber cushion; 7. a limit component; 701. a concave mounting rack; 702. a fixed rod; 703. a spring; 704. a moving plate; 705. a clamping rod; 706. a moving groove; 707. pulling the plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, a casing centralizer for radial drilling convenient to installation, including arc splint 1, arc splint 1 has two, two inside cylinder passageway that encloses of arc splint 1, the sleeve pipe is arranged in the passageway, arc splint 1 side has guard plate 2, guard plate 2 has two, form a dead slot in the middle of two guard plates 2, the dead slot inside is equipped with antifriction device 3, guard plate 2 can protect antifriction device 3 from outside bump, arc splint 1 front end has front riser 101, can fix the front portion of centralizer, arc splint 1 rear end has back riser 102, can fix the rear portion of centralizer, the inside screw hole 5 that has of back riser 102, the back riser 102 rear end has spacing subassembly 7, screw hole 5 on the riser 102 behind spacing subassembly 7 joint, make back riser 102 be close to each other, and then consolidate the rear portion of centralizer, arc splint 1 inboard has anti-skidding cushion 103, the cushion 103 contacts with the sleeve pipe, increase the frictional force between arc splint 1 inner wall and the sleeve pipe, prevent that the sleeve pipe from droing, arc splint 1 upper end has sealing cushion 6, sealing cushion 6 is located in order to adjust the sealing cushion 6, sealing cushion 4 can be in the arc splint 1, the position is adjusted to the arc splint, the sealing cushion 4 is more in the arc splint 1, the position is adjusted to the arc splint is in the arc splint 1, the front of the position can be adjusted.
Specifically, the limiting component 7 includes a concave mounting frame 701, each component of the limiting component 7 is mounted on the concave mounting frame 701, a fixing rod 702 is fixedly connected between inner side walls of the concave mounting frame 701, two symmetrical springs 703 are sleeved on the surface of the fixing rod 702, two symmetrical moving plates 704 can be slidably connected on the surface of the fixing rod 702, the moving plates 704 can slide on the fixing rod 702, the springs 703 push the moving plates 704 inwards by utilizing elasticity, the two moving plates 704 are close to each other, one end of each spring 703 is fixedly connected with inner side walls of the concave mounting frame 701, the other end of each spring 703 is fixedly connected with corresponding surfaces of the moving plates 704, a clamping rod 705 is fixedly connected with the surface of each moving plate 704, the clamping rod 705 can penetrate through a threaded hole 5 to clamp the rear vertical plate 102, a communicating moving groove 706 is formed in the top of each concave mounting frame 701, a pull plate 707 is slidably connected with the inner wall of each moving groove 706, the bottom of each pull plate 707 can move in each moving groove 706, and the clamping rod 705 can be controlled to be separated from each other by pulling the pull plate 707.
Through above-mentioned technical scheme, through the top of the protruding concave mounting bracket 701 of movable groove 706 cooperation arm-tie 707, be in order to be convenient for slide along the surface of dead lever 702 to movable plate 704 to under the effect of extrusion spring 703, the clamping rod 705 of cooperation arm-tie 704 surface design is convenient for carry out the joint to screw hole 5 on the back riser 102 fixedly, makes two arc splint 1 when installing, dismantle, more convenient.
Specifically, the antifriction device 3 includes telescopic link 301, and telescopic link 301 can atress be flexible, and there is pulley groove 302 telescopic link 301 top, and telescopic link 301 outside has reset spring 303, and reset spring 303 hitch telescopic link 301, reset spring 303 are located between pulley groove 302 and the arc splint 1, and reset spring 303 utilizes the elasticity to reset telescopic link 301, and pulley 304 is inside to have in pulley groove 302, and pulley groove 302 internal rotation is U type structure, and pulley groove 302 and arc splint 1 are connected respectively at reset spring 303 both ends.
Through the technical scheme, when the centralizer is placed in a well, the pulley 304 is in contact with the well wall, so that friction with the well wall is reduced, the position of the sleeve is limited, meanwhile, when the uneven well wall is encountered, the pulley 304 drives the bottom telescopic rod 301 to stretch and retract, and the pulley 304 is pushed back to the original position by the aid of elasticity of the reset spring 303, so that the problem that the centralizer is clamped on the well wall is effectively solved.
Specifically, adjusting device 4 includes adjusting column 401, and adjusting column 401 is inside to have the cavity, and the cavity is inside to have adjusting screw 402, and adjusting screw 402 can be in adjusting column 401 internal rotation, and adjusting screw 402 upper end has dwang 403, and dwang 403 is used for controlling stopper 404, and adjusting screw 402 has cup jointed stopper 404, stopper 404 joint in the cavity.
Through the above technical scheme, the rotating rod 403 is rotated to further drive the bottom adjusting screw 402 to rotate, and the limiting block 404 cannot rotate along with the adjusting screw 402 and can move up and down on the adjusting screw 402.
Specifically, there is the transfer arm 405 at stopper 404 front side both ends, and transfer arm 405 rotates and connects stopper 404, and transfer arm 405 keeps away from adjusting column 401 one end and rotates to be connected in front riser 101, and adjusting column 401 is located between the front riser 101, and front riser 101 all has the hole with adjusting column 401 is inside, and the hole is inside to have connecting rod 406 in pairs, connecting rod 406 both ends have separation blade 407.
Through the technical scheme, when the limiting block 404 moves up and down, the driving arm 405 can be driven to move, the front vertical plates 101 are pushed, the connecting rods 406 connect the two front vertical plates 101 with the adjusting column 401, the front vertical plates 101 can slide on the connecting rods 406, the blocking pieces 407 ensure that the front vertical plates 101 cannot slide out of the connecting rods 406, the front vertical plates 101 slide to drive the arc clamping plates 1 to slide, and the distance between the two arc clamping plates 1 can be adjusted to fix the sleeve.
When the centering guide sleeve is used, the middle part of the sleeve is inserted between two arc clamping plates 1 from the opening at the rear end of the centering guide sleeve, then the rotating rod 403 is rotated, the rotating rod 403 drives the adjusting screw 402 to rotate, the limiting block 404 moves in the vertical direction, the two arc clamping plates 1 are further close to each other, after the sleeve is tightly clamped by the anti-slip rubber pad 103 on the inner wall of the arc clamping plate 1, the limiting assembly 7 is used for fixing, the pull plate 707 is pulled, the clamping rods 705 are separated from each other, the clamping rods 705 are aligned with the threaded holes 5, then the pull plate 707 is loosened, the moving plate 704 clamps the rear vertical plate 102, the rear end of the centering guide sleeve is further reinforced, the centering guide sleeve can be quickly installed, the sealing rubber pad 6 can clamp the sleeve to prevent sundries from entering, when the centering guide sleeve is placed in a well, the centering guide sleeve is tightly attached to the well wall by the pulley 304, when the uneven well wall is encountered, the telescopic rod 301 can stretch, the pulley 304 is driven to move in the well wall 2, then the pulley 303 is pushed by the reset spring to reset the pulley 304, the limiting assembly 7 is pulled, and then the rotating rod 403 is removed when the centering guide sleeve is disassembled, the centering guide sleeve is quickly, and the centering guide sleeve is removed, and the centering guide sleeve can be quickly removed from the centering guide sleeve.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a radial well drilling is with sleeve pipe centralizer convenient to installation, includes arc splint (1), its characterized in that: arc splint (1) have two, two arc splint (1) inside enclose into a cylinder passageway, arc splint (1) side is equipped with guard plate (2), guard plate (2) have two, two form an empty slot in the middle of guard plate (2), the inside antifriction device (3) that is equipped with of empty slot, antifriction device (3) have three, three antifriction device (3) are vertical to be set up in the empty slot, arc splint (1) front end is equipped with preceding riser (101), arc splint (1) rear end is equipped with back riser (102), back riser (102) inside is equipped with screw hole (5), back riser (102) rear end is equipped with spacing subassembly (7), arc splint (1) inboard is equipped with anti-skidding cushion (103), arc splint (1) upper end is equipped with sealed cushion (6), sealed cushion (6) are located the top of anti-skidding cushion (103), arc splint (1) front end is equipped with adjusting device (4), the rear end is for adjusting device.
2. A casing centralizer for radial drilling for ease of installation according to claim 1, wherein: limiting component (7) are including concave type mounting bracket (701), fixedly connected with dead lever (702) between the inside wall of concave type mounting bracket (701), two symmetrical springs (703) have been cup jointed on the surface of dead lever (702), the surface sliding connection of dead lever (702) has two symmetrical movable plates (704), the inside wall fixed connection of one end and concave type mounting bracket (701) of spring (703), the other end and the corresponding fixed surface of movable plate (704) of spring (703) are connected, the fixed surface of movable plate (704) is connected with clamping pole (705).
3. A casing centralizer for radial drilling for ease of installation according to claim 1, wherein: antifriction device (3) are including telescopic link (301), telescopic link (301) top is equipped with pulley groove (302), telescopic link (301) outside is equipped with reset spring (303), and reset spring (303) noose telescopic link (301), and reset spring (303) are located between pulley groove (302) and arc splint (1), pulley groove (302) inside is equipped with pulley (304), pulley groove (302) rotate and connect pulley (304).
4. A casing centralizer for radial drilling for ease of installation according to claim 1, wherein: the adjusting device (4) comprises an adjusting column (401), a cavity is formed in the adjusting column (401), an adjusting screw (402) is arranged in the cavity, the adjusting screw (402) is rotationally connected with the adjusting column (401), a rotating rod (403) is arranged at the upper end of the adjusting screw (402), and a limiting block (404) is sleeved on the adjusting screw (402).
5. A casing centralizer for radial drilling for ease of installation according to claim 2, wherein: the clamping rod (705) is connected with the threaded hole (5) in a clamping mode, a communicating moving groove (706) is formed in the top of the concave mounting frame (701), a pull plate (707) is connected to the inner wall of the moving groove (706) in a sliding mode, and the bottom of the pull plate (707) is fixedly connected with the top of the moving plate (704).
6. A casing centralizer for radial wells for ease of installation according to claim 3, wherein: the pulley groove (302) is of a U-shaped structure, and two ends of the return spring (303) are respectively connected with the pulley groove (302) and the arc clamping plate (1).
7. A casing centralizer for radial drilling for ease of installation as set forth in claim 4, wherein: the limiting block is characterized in that two ends of the front side of the limiting block (404) are provided with driving arms (405), the driving arms (405) are rotationally connected with the limiting block (404), and one end, far away from the adjusting column (401), of each driving arm (405) is rotationally connected with the front vertical plate (101).
8. A casing centralizer for radial drilling for ease of installation as set forth in claim 4, wherein: the adjusting column (401) is located between the front vertical plates (101), holes are formed in the front vertical plates (101) and the adjusting column (401), the holes correspond to each other in pairs, connecting rods (406) are arranged in the holes, and baffle plates (407) are arranged at two ends of each connecting rod (406).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310599121.1A CN116556855A (en) | 2023-05-25 | 2023-05-25 | Casing centralizer for radial drilling convenient to install |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310599121.1A CN116556855A (en) | 2023-05-25 | 2023-05-25 | Casing centralizer for radial drilling convenient to install |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116556855A true CN116556855A (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310599121.1A Pending CN116556855A (en) | 2023-05-25 | 2023-05-25 | Casing centralizer for radial drilling convenient to install |
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| CN (1) | CN116556855A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117927154A (en) * | 2024-03-25 | 2024-04-26 | 山东健源石油工程技术有限公司 | Sleeve elastic centralizer device |
-
2023
- 2023-05-25 CN CN202310599121.1A patent/CN116556855A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117927154A (en) * | 2024-03-25 | 2024-04-26 | 山东健源石油工程技术有限公司 | Sleeve elastic centralizer device |
| CN117927154B (en) * | 2024-03-25 | 2024-05-24 | 山东健源石油工程技术有限公司 | Sleeve elastic centralizer device |
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