CN216741404U - Coiled tubing injection head clamping device - Google Patents
Coiled tubing injection head clamping device Download PDFInfo
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- CN216741404U CN216741404U CN202122838381.9U CN202122838381U CN216741404U CN 216741404 U CN216741404 U CN 216741404U CN 202122838381 U CN202122838381 U CN 202122838381U CN 216741404 U CN216741404 U CN 216741404U
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Abstract
The utility model provides a continuous oil pipe injection head clamping device which comprises a supporting frame, wherein a chain transmission mechanism and a chain driving mechanism are arranged on the supporting frame, the chain transmission mechanism comprises four chain wheels, each two chain wheels are linked with a chain, one side, close to the opposite side, of the two chains and the meshed side of the chain wheels are oppositely arranged in parallel to form an oil pipe channel for a continuous oil pipe to pass through, each chain unit is connected with a clamping block, a semicircular groove is formed in one side, close to the continuous oil pipe, of the clamping block, a plurality of clamping plates are movably connected in the groove, and a buffer part is arranged between each clamping plate and the groove. The utility model has the beneficial effects that: reasonable in design, simple structure, safe and reliable, applicable in the coiled tubing of different pipe diameters also can cushion oil pipe's centre gripping, reduces the friction damage to oil pipe.
Description
Technical Field
The utility model relates to the technical field of oil exploitation equipment, in particular to a clamping device for a continuous oil pipe injection head.
Background
Coiled tubing, also known as coiled tubing, coiled tubing or coiled tubing, is meant to be wound onto large diameter spools. The continuous oil pipe without the joint is formed by obliquely connecting a plurality of sections of steel strips together and performing rolling, forming and welding. The coiled tubing is a tubing made of low carbon alloy steel and has good flexibility, and is also called as flexible tubing, and a roll of coiled tubing is several kilometers long. The coiled tubing operation equipment has the characteristics of operation under pressure and continuous lifting, and has small volume, quick operation period and low cost. Because the automation is improved, the maneuverability is good, the operation is safer, more efficient and more environment-friendly, and the device is widely applied to a plurality of oil and gas operation fields in the last two decades after being applied to the petroleum industry. At present, the coiled tubing technology is widely used in the fields of oil field drilling, well completion, fracturing, acidizing, liquid drainage, oil testing, oil and gas production, well workover, blockage removal of gathering and transportation pipelines and the like, more than 10 processes can be used in the well workover aspect, and the coiled tubing technology plays a very important role in oil and gas exploration, development and production. The domestic and foreign operations prove that the coiled tubing technology is applied to drilling, workover, production increase and the like of horizontal wells, is beneficial to realizing the simplicity, the rapidness, the safety and the reliability of the construction process, improving the operation efficiency, reducing the labor intensity and the operation cost and reducing the damage to the stratum environment. Especially for special wells and complex wells, the advantages of coiled tubing are irreplaceable. However, in the working process of lifting and placing the coiled tubing, the coiled tubing operation equipment in the prior art has the disadvantages that the tensioning device can retreat for a certain distance due to large injection force and poor pipeline elasticity, and the distance between slips is reduced, so that the phenomenon of extruding the coiled tubing is obvious.
The coiled tubing injector is a key device of coiled tubing operation equipment, and the injector has the main functions of clamping an oil tube, overcoming the upward jacking force and the friction force of downhole pressure on an oil tube column, lowering the coiled tubing into a well or clamping the coiled tubing immovably or lifting the coiled tubing out of the well, and controlling the injection and lifting speeds of the oil tube. The injection head is a core part of coiled tubing equipment, and the clamping device is one of the most important parts on the injection head and is used for clamping and conveying the coiled tubing.
In the prior art, the injection head of the coiled tubing generally comprises: the support frame, set up the gooseneck that is used for the direction coiled tubing entering injection head on the support frame, set up chain drive system and the actuating system who drives chain transmission on the support frame, wherein chain drive system includes four sprockets, and every two sprockets drive a chain drive, and two chains form the oil pipe passageway that supplies coiled tubing to pass with the relative parallel arrangement of one side of being close to the other side behind the sprocket meshing, the chain centre gripping coiled tubing of oil pipe passageway both sides when chain drive. The clamping devices used on current injector heads have the following drawbacks: because oil wells with different calibers need coiled tubing with different sizes, the clamping block needs to be frequently replaced in the operation process, and because the commonly used clamping block and the clamping block bracket are fixed by bolts at multiple points, special tools are needed during replacement, so that the operation is complicated; the clamping blocks and the clamping block brackets are in rigid connection mostly, the clamping blocks have large impact on the oil pipe and serious abrasion, the situation that the clamping blocks cannot be in contact with the oil pipe at the same time often occurs when a plurality of clamping blocks are used, and the local stress on the surface of the oil pipe is increased; the clamping block is connected with the clamping block bracket through the bolt, the clamping block cannot slide on the clamping block bracket, and abrasion of the clamping block on the oil pipe is accelerated. When the clamping device is used, in order to adapt to different operation processes, oil pipes with different pipe diameters need to be adopted, the oil pipes with different pipe diameters need to be matched with clamping blocks with different specifications, a whole set of clamping equipment is very troublesome to replace, the clamping device is inconvenient to disassemble, and the construction period is influenced. The clamping blocks and the clamping block brackets are in rigid connection, the clamping blocks have large impact on the oil pipe and are seriously abraded, the situation that the clamping blocks cannot be in contact with the oil pipe at the same time often occurs when a plurality of clamping blocks are used, and the local stress on the surface of the oil pipe is increased; the clamping block is connected with the clamping block bracket through the bolt, the clamping block cannot slide on the clamping block bracket, and the abrasion of the clamping block on the oil pipe is accelerated
In patent No. 201520445137.8, patent name "a coiled tubing injection head clamping device", the patent provides a coiled tubing injection head clamping device, including a clamping block, a pressing plate, a pin shaft, a clamping block bracket, the clamping block is a saddle shape, the bottom surface of the clamping block is a plane, the clamping block is longitudinally provided with an arc groove corresponding to the outer diameter of the coiled tubing, two sides of the bottom of the clamping block are clamping block mounting surfaces, and the middle part of the clamping block mounting surface is provided with a clamping groove; two bosses corresponding to the clamping grooves are arranged on the top surface of the clamping block bracket; the boss is vertically provided with a pin shaft hole, a pin shaft is arranged from the bottom of the pin shaft hole, a spring is arranged at the lower end of the pin shaft, the upper end of the pin shaft extends out of the upper port of the pin shaft hole and then is connected with a pressing plate, the spring tightens the pressing plate through the pin shaft, and the pressing plate tightly presses the clamping block mounting surfaces at two sides of the clamping block. In the patent, the clamping block is fixed on the clamping block bracket by combining the pin shaft with the spring and the pressing plate, so that only the pin shaft needs to be pulled when the clamping block is disassembled and assembled, the disassembly and the assembly are convenient, and the time is saved; a gap is reserved between the clamping block and the clamping block bracket, and the clamping block can slide on the clamping block bracket according to the position of the oil pipe, so that the abrasion to the oil pipe is reduced; a gasket is arranged between the clamping block and the clamping block bracket, so that a buffering effect is achieved, the damage of impact to the coiled tubing can be reduced, and the clamping blocks can be guaranteed to hold the coiled tubing tightly. The device can improve the service efficiency of the clamping device to a certain extent, but can not solve the problem of adapting to different operation processes to replace the clamping block.
Therefore, a new device is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides the clamping device for the continuous oil pipe injection head, which has the advantages of reasonable design, simple structure, safety and reliability and can adapt to different pipe diameters.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a coiled tubing injection head clamping device which comprises a supporting frame, wherein a chain transmission mechanism and a chain driving mechanism are arranged on the supporting frame, the chain transmission mechanism comprises four chain wheels, each two chain wheels are linked with a chain, one side of each two chains, which is close to the chain wheels and meshed with the chain wheels, is arranged in parallel relatively to one side of the chain wheels, which is close to the chain wheels, so that an oil tube channel for a coiled tubing to pass through is formed, and each chain unit is connected with a clamping block; one side of the clamping block, which is close to the continuous oil pipe, is provided with a semicircular groove, a plurality of clamping plates are movably connected in the groove, and a buffer piece is arranged between each clamping plate and the corresponding groove.
Preferably, the clamping plate is an arc-shaped plate, and the circle center of the arc-shaped plate is coincided with the circle center of the groove.
Preferably, splint with be provided with the telescopic link between the recess tank bottom, the telescopic link includes stiff end and flexible end, and is cylindricly, stiff end and flexible end respectively fixed connection in the recess tank bottom with splint bottom surface, flexible end sliding connection in the stiff end.
Preferably, the bolster is the gasbag, the gasbag is the strip, evenly set up in the recess tank bottom, and every the gasbag all parallel arrangement.
Preferably, the air bag is communicated with the inner cavity of the clamping block through a pipeline, and an air pump and an electric valve are arranged in the inner cavity of the clamping block.
Preferably, a row of the clamping plates are uniformly distributed on the top of each air bag, and the air bags are positioned between the two telescopic rods of each clamping plate; the bottom of the splint is attached to the top of the air bag.
Preferably, each of the air cells is arranged in parallel.
Optionally, a non-slip mat is arranged on the top surface of the clamping plate, namely, the surface attached to the coiled tubing, and the non-slip mat is made of an elastic material.
When the continuous oil pipe clamping device is in actual use, the air pump in the inner cavity of the clamping block can be used for inflating or deflating the air bag, so that the distance between the clamping plate and the groove is adjusted, the continuous oil pipe clamping device is suitable for continuous oil pipes with different pipe diameters, meanwhile, the air bag and the anti-slip mat can be used for buffering the clamping plate, the friction loss of the continuous oil pipe is effectively reduced, the service life is prolonged, a plurality of clamping plates are uniformly arranged, if one clamping plate is broken or falls off, a large number of clamping plates can continue to work, and the use is not influenced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of a clamping block portion of the present invention.
Fig. 3 is a schematic perspective view of a clamping block portion of the present invention.
Wherein the reference numerals are: 1. a sprocket; 2. a chain; 3. a clamping block; 301. a groove; 4. a splint; 401. a telescopic rod; 5. an air bag.
Detailed Description
Technical characteristics of the scheme can be clearly explained, and the scheme is explained through a specific implementation mode.
Example one
Referring to fig. 1 to 3, the present embodiment is a coiled tubing injection head clamping device, which includes a support frame, a chain transmission mechanism and a chain driving mechanism are disposed on the support frame, the chain transmission mechanism includes four chain wheels 1, each two chain wheels 1 are linked with a chain 2, one side of each two chains 2, which is close to the other side after being meshed with the chain wheels 1, is arranged in parallel relatively to form a tubing passage for a coiled tubing to pass through, and each chain unit is connected with a clamping block 3; one side that grip block 3 is close to coiled tubing is provided with semicircular groove 301, and swing joint has a plurality of splint 4 in the recess 301, is provided with the bolster between splint 4 and the recess 301.
Specifically, be provided with telescopic link 401 between splint 4 and the recess 301 tank bottom, telescopic link 401 includes stiff end and flexible end, and is cylindricly, and stiff end and flexible end fixed connection respectively in recess 301 tank bottom and splint 4 bottom surfaces, flexible end sliding connection in stiff end.
When the continuous oil pipe injection head is actually used, the clamping effect of the continuous oil pipe injection head can be ensured through the matching of the clamping plate 4 and the buffer piece, the adjustment is carried out according to the continuous oil pipe injection heads with different pipe diameters, and the height of the clamping plate 4 is adjusted through the telescopic rod 401 so as to adapt to the working requirements of the continuous oil pipe injection heads with different pipe diameters.
Example two
Referring to fig. 1 to 3, the present embodiment is a coiled tubing injection head clamping device, which includes a support frame, a chain transmission mechanism and a chain driving mechanism are disposed on the support frame, the chain transmission mechanism includes four chain wheels 1, each two chain wheels 1 are linked with a chain 2, one side of each two chains 2, which is close to the other side after being meshed with the chain wheels 1, is arranged in parallel relatively to form a tubing passage for a coiled tubing to pass through, and each chain unit is connected with a clamping block 3; clamping block 3 is close to one side of coiled tubing is provided with semicircular groove 301, swing joint has a plurality of splint 4 in the recess 301, splint 4 with be provided with the bolster between the recess 301.
Specifically, be provided with telescopic link 401 between splint 4 and the recess 301 tank bottom, telescopic link 401 includes stiff end and flexible end, and is cylindricly, and stiff end and flexible end fixed connection respectively in recess 301 tank bottom and splint 4 bottom surfaces, flexible end sliding connection in stiff end.
As a preferred embodiment of the present invention, the structure is optimized on the basis of the first embodiment, specifically, a buffer is disposed between the splint 4 and the groove 301, the buffer is an airbag 5, the airbag 5 is in the shape of a strip, and is uniformly disposed at the bottom of the groove 301, and each airbag 5 is disposed in parallel.
Because gasbag 5 is the strip to set up in recess 301 tank bottom, can form the buffering between recess 301 and splint 4, and cooperate with telescopic link 401, provide better adjustment effect, reach the needs that adapt to the continuous oil pipe filling head of different pipe diameters.
EXAMPLE III
Referring to fig. 1 to 3, the present embodiment is a coiled tubing injection head clamping device, which includes a support frame, a chain transmission mechanism and a chain driving mechanism are disposed on the support frame, the chain transmission mechanism includes four chain wheels 1, each two chain wheels 1 are linked with a chain 2, one side of each two chains 2, which is close to the other side after being meshed with the chain wheels 1, is arranged in parallel relatively to form a tubing passage for a coiled tubing to pass through, and each chain unit is connected with a clamping block 3; one side that grip block 3 is close to coiled tubing is provided with semicircular groove 301, and swing joint has a plurality of splint 4 in the recess 301, is provided with the bolster between splint 4 and the recess 301.
Specifically, be provided with telescopic link 401 between splint 4 and the recess 301 tank bottom, telescopic link 401 includes stiff end and flexible end, and is cylindricly, and stiff end and flexible end fixed connection respectively in recess 301 tank bottom and splint 4 bottom surface, flexible end sliding connection in stiff end. Be provided with the bolster between splint 4 and the recess 301, the bolster is gasbag 5, and gasbag 5 is the strip, evenly sets up in the recess 301 tank bottom, and the equal parallel arrangement of every gasbag 5.
As a preferred embodiment of the present invention, the structure is optimized based on the first embodiment, specifically, the air bag 5 is communicated with the inner cavity of the clamping block 3 through a pipe, and the inner cavity of the clamping block 3 is provided with an air pump and an electric valve.
When the device is in actual use, the air pump in the inner cavity of the clamping block 3 can be used for inflating or deflating the air bag 5, so that the distance between the clamping plate 4 and the groove 301 is adjusted, and the device is suitable for continuous oil pipes with different pipe diameters.
Example four
Referring to fig. 1 to 3, the present embodiment is a coiled tubing injection head clamping device, which includes a support frame, a chain transmission mechanism and a chain driving mechanism are disposed on the support frame, the chain transmission mechanism includes four chain wheels 1, each two chain wheels 1 are linked with a chain 2, one side of each two chains 2, which is close to the other side after being meshed with the chain wheels 1, is arranged in parallel relatively to form a tubing passage for a coiled tubing to pass through, and each chain unit is connected with a clamping block 3; one side that grip block 3 is close to coiled tubing is provided with semicircular groove 301, and swing joint has a plurality of splint 4 in the recess 301, is provided with the bolster between splint 4 and the recess 301.
Specifically, be provided with telescopic link 401 between splint 4 and the recess 301 tank bottom, telescopic link 401 includes stiff end and flexible end, and is cylindricly, and stiff end and flexible end fixed connection respectively in recess 301 tank bottom and splint 4 bottom surface, flexible end sliding connection in stiff end. Be provided with the bolster between splint 4 and the recess 301, the bolster is gasbag 5, and gasbag 5 is the strip, evenly sets up in the recess 301 tank bottom, and the equal parallel arrangement of every gasbag 5. The air bag 5 is communicated with the inner cavity of the clamping block 3 through a pipeline, and the inner cavity of the clamping block 3 is provided with an air pump and an electric valve.
As a preferred embodiment of the present invention, the structure is optimized based on the first embodiment, specifically, a row of splints 4 is uniformly arranged on the top of each airbag 5, the airbag 5 is located between two telescopic rods 401 of each splint 4, and the bottom of the splint 4 is attached to the top of the airbag 5.
By the proposal, the buffer function of the air bag 5 can be effectively improved, the reliability of the clamping device is ensured,
EXAMPLE five
Referring to fig. 1 to 3, the present embodiment is a coiled tubing injection head clamping device, which includes a support frame, a chain transmission mechanism and a chain driving mechanism are disposed on the support frame, the chain transmission mechanism includes four chain wheels 1, each two chain wheels 1 are linked with a chain 2, one side of each two chains 2, which is close to the other side after being meshed with the chain wheels 1, is arranged in parallel relatively to form a tubing passage for a coiled tubing to pass through, and each chain unit is connected with a clamping block 3; one side that grip block 3 is close to coiled tubing is provided with semicircular groove 301, and swing joint has a plurality of splint 4 in the recess 301, is provided with the bolster between splint 4 and the recess 301.
Specifically, be provided with telescopic link 401 between splint 4 and the recess 301 tank bottom, telescopic link 401 includes stiff end and flexible end, and is cylindricly, and stiff end and flexible end fixed connection respectively in recess 301 tank bottom and splint 4 bottom surface, flexible end sliding connection in stiff end. Be provided with the bolster between splint 4 and the recess 301, the bolster is gasbag 5, and gasbag 5 is the strip, evenly sets up in the recess 301 tank bottom, and the equal parallel arrangement of every gasbag 5. The air bag 5 is communicated with the inner cavity of the clamping block 3 through a pipeline, and the inner cavity of the clamping block 3 is provided with an air pump and an electric valve. A row of clamping plates 4 are uniformly distributed at the top of each air bag 5, the air bags 5 are positioned between two telescopic rods 401 of each clamping plate 4, and the bottoms of the clamping plates 4 are attached to the top of the air bags 5
As a preferred embodiment of the present invention, the structure is optimized on the basis of the first embodiment, specifically, a non-slip mat is disposed on the top surface of the clamping plate 4, i.e., the surface attached to the coiled tubing, and the non-slip mat is made of an elastic material.
Through the design of slipmat, further improved the security of coiled tubing injection head, reduced dangerous condition such as injection head landing to because the slipmat is the elastic material, improvement clamping device's that can correspond adaptability.
When the continuous oil pipe clamp is in actual use, the air bag 5 can be inflated or deflated through the air pump in the inner cavity of the clamping block 3, so that the distance between the clamping plate 4 and the groove 301 is adjusted, the continuous oil pipe clamp is suitable for continuous oil pipes with different pipe diameters, meanwhile, the clamping plate can be buffered through the arrangement of the air bag 5 and the non-slip mat, the friction loss of the continuous oil pipe is effectively reduced, the service life is prolonged, a plurality of clamping plates 4 are uniformly arranged, if one clamping plate 4 is broken or falls off, a large number of clamping plates 4 can also continue to work, and the use is not influenced.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (8)
1. A clamping device for a coiled tubing injection head comprises a supporting frame, wherein a chain transmission mechanism and a chain driving mechanism are arranged on the supporting frame, the chain transmission mechanism comprises four chain wheels (1), each two chain wheels (1) are linked with a chain (2), one side, close to the opposite side, of each chain (2) meshed with the chain wheels (1) is arranged in parallel relatively to form an oil tube channel for the coiled tubing to pass through, and each chain unit is connected with a clamping block (3); the coiled tubing clamping fixture is characterized in that one side, close to a coiled tubing, of the clamping block (3) is provided with a semicircular groove (301), a plurality of clamping plates (4) are movably connected into the groove (301), and buffering parts are arranged between the clamping plates (4) and the groove (301).
2. The coiled tubing injector head clamping device according to claim 1, wherein the clamping plate (4) is an arc-shaped plate, and the center of the arc-shaped plate coincides with the center of the groove (301).
3. The coiled tubing injector head clamping device according to claim 1, wherein a telescopic rod (401) is disposed between the clamping plate (4) and the bottom of the groove (301), the telescopic rod (401) comprises a fixed end and a telescopic end, and is cylindrical, the fixed end and the telescopic end are respectively fixedly connected to the bottom of the groove (301) and the bottom of the clamping plate (4), and the telescopic end is slidably connected to the fixed end.
4. The coiled tubing injector head clamping device according to claim 3, wherein the buffer member is an air bag (5), and the air bag (5) is strip-shaped and uniformly arranged at the bottom of the groove (301).
5. The coiled tubing injector head clamping device according to claim 4, wherein the air bag (5) is communicated with the inner cavity of the clamping block (3) through a pipeline, and the inner cavity of the clamping block (3) is provided with an air pump and an electric valve.
6. A coiled tubing injector head clamping device according to claim 4, wherein a row of said clamping plates (4) is uniformly arranged on the top of each said air bag (5), and said air bag (5) is located between two said telescopic rods (401) of each said clamping plate (4);
the bottom of the splint (4) is attached to the top of the air bag (5).
7. A coiled tubing injector head clamping device according to claim 4, wherein each of the air bags (5) are arranged in parallel.
8. The coiled tubing injector head clamping device according to claim 1, wherein a non-slip pad is arranged on the top surface of the clamping plate (4), namely the surface attached to the coiled tubing, and the non-slip pad is made of an elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122838381.9U CN216741404U (en) | 2021-11-19 | 2021-11-19 | Coiled tubing injection head clamping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122838381.9U CN216741404U (en) | 2021-11-19 | 2021-11-19 | Coiled tubing injection head clamping device |
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| CN216741404U true CN216741404U (en) | 2022-06-14 |
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| CN202122838381.9U Active CN216741404U (en) | 2021-11-19 | 2021-11-19 | Coiled tubing injection head clamping device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788330A (en) * | 2023-01-12 | 2023-03-14 | 大庆辰平钻井技术服务有限公司 | Coiled tubing righting device |
| CN115807634A (en) * | 2023-01-12 | 2023-03-17 | 大庆辰平钻井技术服务有限公司 | Continuous oil pipe injection head supporting device |
-
2021
- 2021-11-19 CN CN202122838381.9U patent/CN216741404U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788330A (en) * | 2023-01-12 | 2023-03-14 | 大庆辰平钻井技术服务有限公司 | Coiled tubing righting device |
| CN115807634A (en) * | 2023-01-12 | 2023-03-17 | 大庆辰平钻井技术服务有限公司 | Continuous oil pipe injection head supporting device |
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