CN101781973A - Clamping device of injection head of continuous string coiled tubing - Google Patents
Clamping device of injection head of continuous string coiled tubing Download PDFInfo
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- CN101781973A CN101781973A CN201010110549A CN201010110549A CN101781973A CN 101781973 A CN101781973 A CN 101781973A CN 201010110549 A CN201010110549 A CN 201010110549A CN 201010110549 A CN201010110549 A CN 201010110549A CN 101781973 A CN101781973 A CN 101781973A
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Abstract
The invention relates to an injection head device of a continuous string coiled tubing, which comprises clamping cylinders, tensioning cylinders, drive sprocket wheels, saddle shaped clamping blocks and chains. A cylinder head and a piston rod head of three pairs of clamping cylinders of the device are respectively connected through a shaft, a bearing bracket which can rotate on the shaft is arranged on each shaft, a sliding block is respectively arranged on both ends of the shaft, a bearing frame body which can rotate on a pin roll is respectively arranged on two end of each bearing bracket through the pin roll, and a clamping bearing which can rotate on the pin roll is respectively arranged on each bearing frame body through the pin roll. A plurality of clamping bearings are separated into three parts relatively independent, a clamping mechanism is separately controlled by three sets of clamping cylinders respectively, so that when the injection head goes up and down the continuous string coiled tubing, the upper clamping cylinder, the middle clamping cylinder and the lower clamping cylinder can sequentially load pressure or unload pressure. As a result, the clamping force can concentrate on the three parts so as to ensure that when the continuous string coiled tubing is clamped, strong clamping force can be generated, and the loading force is balanced without deflection and can be easily aligned with the well head. Therefore, the invention solves the technical problem of difficult alignment with the well head during operation of the continuous string coiled tubing operation device for quite a long time.
Description
Technical field
The present invention relates to the oil drilling and extracting equipment field, specially refer to clamping device of injection head of continuous string coiled tubing.
Background technology
The coiled tubing implement is widely used in operations such as oil gas field well workover, drilling well, completion, well logging, is bringing into play more and more important effect in oilfield prospecting developing, and coild tubing unit is described as " omnipotent operation " equipment.Clamping device of injection head of continuous string coiled tubing is the critical component of coiled tubing implement, hydraulic motor drive sprocket wheel by the both forward and reverse directions rotation carries out work, saddle type grip block by the chain internode is clamped coiled tubing, makes it to move with chain, realizes the coiled tubing G.I.H or trips out well head.Injection head clamping device basic structure all is to adopt saddle type grip block is installed on the chain drive-belt at present, chain drive-belt is driven by two pairs of drive sprockets and tightener sprocket, but each is different for clamping device, two kinds of form of structure of main at present employing, a kind of is that chain two inboards respectively have a monolithic briquetting, several clamping cylinder tailpieces of the piston rod of homonymy link to each other with the monolithic briquetting, monolithic briquetting two ends are chain sprocket structures, be peripherally equipped with a secondary gimmal, gimmal can move with chain drive-belt under the driving at chain drive-belt after compressing chain and saddle type grip block, coiled tubing makes the gimmal on the monolithic briquetting compress saddle type grip block under the clamping cylinder effect of both sides, realizes the function of clamping coiled tubing; Another kind is that both sides respectively have a monolithic briquetting, several clamping cylinder tailpieces of the piston rod of homonymy link to each other with the monolithic briquetting, many wheeled bearings are housed on the monolithic briquetting, the clamping of coiled tubing and clamping are under the clamping cylinder effect of both sides, drive two the monolithic briquetting motions in both sides, from but wheeled bearing on the individual monolithic briquetting compresses saddle type grip block, realize the function of clamping coiled tubing.These two kinds of injection head clamping devices all are to adopt the monolithic briquette structure, and the several clamping cylinders of homonymy drive a monolithic briquetting motion simultaneously.These two kinds of clamping device of injection head of continuous string coiled tubing all have a common shortcoming: saddle type grip block compression area is excessive, can not guarantee that each grip block fully contacts the stressed and acquisition balanced chucking power from oil cylinder with the monolithic briquetting, and each grip block unbalance stress and cause coiled tubing in being held the process that is lowered to well head, can not align well head under the blowout prevention box centre bore; Particularly work as certain grip block serious wear or be mingled with the hard foreign matter, monolithic briquetting abrasion deformation, certain clamping cylinder that perhaps is mutually related breaks down, the stressed meeting of whole injection glabella type grip block obviously weakens, and the very unbalanced coiled tubing clamping deflection that causes, can accurately not align the well head under the blowout prevention box centre bore, what cause the coiled tubing implement can not normal operation.
Summary of the invention
The object of the present invention is to provide a kind of clamping device of injection head of continuous string coiled tubing of segmentation clamping, by three pairs of oil cylinders to the clamp shaft bolster body application of force that links with it, and the clamping bearing, tightener sprocket and the saddle type grip block that connect by activity clamp coiled tubing, the chucking power that guarantees clamping device of injection head of continuous string coiled tubing is strong, balanced, is easy to align well head.
For achieving the above object, technical scheme of the present invention is:
Whole clamping device of injection head of continuous string coiled tubing is supported by framework and framework side plate, driving box is equipped with on top in framework, on two driving shafts in the driving box drive sprocket is housed respectively, three cover clamping cylinders are housed in framework side plate both sides, the cylinder head of every cover clamping cylinder and piston rod head couple together with axle respectively, tensioning hydro-cylinder is equipped with in bottom in framework, and two tightener sprockets are housed on axle 16, chain is equipped with in drive sprocket and tightener sprocket outside, the common chain drive-belt of drive sprocket and tightener sprocket is equipped with saddle type grip block and is used for the clamping coiled tubing in the outside of chain.
On axle 11, the support of bearing is housed, a slide block is respectively installed at support of bearing two ends, the support of bearing can freely rotate on axle 11, a bearing support body respectively is equipped with bearing pin 14 in the two ends of each support of bearing, the bearing support body can freely rotate on bearing pin 14, each bearing bracket stand body and function bearing pin 17 is installed 3～4 clamping bearings, clamping bearing can freely rotate on bearing pin 17, the support of bearing is one in major axis cover both sides three pairs of even structural members of otic placodes to be arranged, and three pairs of otic placodes all are provided with the through hole that links with the bearing support body.
The bearing support body is with junction plate structural member welded together in the middle of the double-deck equilateral triangle, the through hole of the cross-under bearing pin 14 that links with the support of bearing is arranged at the top of bearing support body, the base has and clamps the bearing pin through hole that bearing links, and clamps bearing and is connected with the support of bearing by bearing pin.
During clamping device of injection head of continuous string coiled tubing work, under HYDRAULIC CONTROL SYSTEM, three pairs of clamping cylinders pressurize or release successively, drive clamping cylinder piston rod stretching motion, drive is located at the slide block at support of bearing two ends along moving in the side plate hole, thereby drive axle 11 and the bearing mounting bracket of on axle 11, installing, bearing support body, clamp bearing to injection head center line or center line movement outside, make the back side that the clamp shaft pressure-bearing is tight or unclamp saddle type grip block, thereby realize saddle type grip block clamping or the function of unclamping coiled tubing.
Good effect of the present invention is:
1. by being clamped bearing, several are movably arranged on the bearing support body, the bearing support body is movably arranged on the support of bearing, the support of bearing is movably arranged on the axle, a plurality of clamping bearings three relatively independent parts have been divided into, three groups of clamping cylinders are independently controlled clamp mechanism separately, when guaranteeing that injection head removes coiled tubing, the upper, middle and lower clamping cylinder pressurizes or release successively, make clamping force concentrate on three positions, guaranteeing has stronger chucking power and stress balance when coiled tubing is held, can deflection, be easy to align well head.Even indivedual oil cylinders are out of control or clamping damage parts partly still is unlikely the effect that influences the coiled tubing chucking power and align well head.
2. clamp the mode that bearing and support of bearing employing activity connect, this structure is floated, obtaining after clamping cylinder imposes on the bearing support body and clamp the power of bearing, can regulate and compress the bonding surface of chain flexibly, guaranteed that effectively the saddle type grip block clamps coiled tubing on the chain by compressing for chucking power that oil cylinder provides, improve the effect of grip block clamping oil pipe, be difficult to align the technical barrier that well head influences operating efficiency when having solved coiled tubing implement operation for a long time.
Description of drawings:
Fig. 1, clamping device of injection head of continuous string coiled tubing front view;
Fig. 2, clamping device of injection head of continuous string coiled tubing left view;
The partial sectional view of Fig. 3, clamping device of injection head of continuous string coiled tubing Fig. 1;
Fig. 4, clamping device of injection head of continuous string coiled tubing A-A view;
Fig. 5, clamping device of injection head of continuous string coiled tubing cut open the B of the cylinder 3 that deoils to view.
The specific embodiment:
1-5 further specifies the specific embodiment of the invention below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2 and Fig. 3, whole clamping device of injection head of continuous string coiled tubing is supported by framework 2 and framework side plate 19, when in oil well, being lowered to coiled tubing 5, hydraulic motor is worked under the equipment HYDRAULIC CONTROL SYSTEM, its power is directly passed to the driving shaft 6 in the driving box 1 after the reduction box deceleration increases square, thereby driving two drive sprockets 7 that are contained on the driving shaft 6 rotates in opposite directions, and then drive two secondary chains 9 and move downward, quadruplet tensioning hydro-cylinder 4 promotes to be contained in the tightener sprocket 15 on the axle 16, make chain 9 tensionings, simultaneously under HYDRAULIC CONTROL SYSTEM, three pairs of clamping cylinder 3 pressurizations successively from top to bottom, drive clamping cylinder 3 contractile motions, the support of bearing of installing with bearing pin 14 on clamping cylinder 3 and the axle 11 12, bearing support body 10, the clamping bearing of installing with bearing pin 17 13 is supported in the square hole of side plate 19 by slide block 18, slide block 18 moves (see figure 5) to the injection head centerline direction in side plate 19 square holes, thereby drive the support of bearing of installing on the axle 11 12 and the bearing support body 10 that is installed on it to injection head center line movement (see figure 4), finally make the clamping bearing 13 that is installed on the bearing support body 10 compress the back of saddle type grip block 8, move to the center simultaneously saddle type grip block 8 simultaneously stressed backs in both sides, hold coiled tubing 5 tightly, realize the function of clamping coiled tubing 5, maintain the operating pressure of clamping cylinder 3, saddle type grip block 8 clamping coiled tubings 5 down move towards well head with chain 9, thereby coiled tubing 5 is sent in the well.
When in well, tripping out coiled tubing 5, the hydraulic motor reverse rotation of under the equipment HYDRAULIC CONTROL SYSTEM, working, driving is contained in two clamping sprocket wheel 7 reverse rotations on the driving shaft 6, moves upward with chain 9 thereby make grip block 8 clampings coiled tubing 5, makes 5 producing wells of coiled tubing.After coiled tubing 5 plays producing well and injection head fully, last clamping cylinder 3 moves order release according to this from top to bottom in descending, drive clamping cylinder 3 stretching routines, thereby make axle 11 and go up all component of dress under slide block 18 slides outside the injection head center line side shifting, finally make clamping bearing 13 no longer compress saddle type grip block 8, last tensioning hydro-cylinder 4 pressure releases reset, and chain 9 is loose.
Claims (3)
1. a driving box (1), framework (2), clamping cylinder (3), tensioning hydro-cylinder (4), driving shaft (6), drive sprocket (7), saddle type grip block (8), chain (9), clamp bearing (13), the clamping device of injection head of continuous string coiled tubing that tightener sprocket (15) and slide block (18) constitute, it is characterized in that: whole clamping device of injection head of continuous string coiled tubing is supported by framework (2) and framework side plate (19), driving box (1) is equipped with on top in framework (2), on two driving shafts (6) in the driving box (1) drive sprocket (7) is housed respectively, three cover clamping cylinders (3) are housed in framework side plate (19) both sides, the cylinder head of every cover clamping cylinder (3) and piston rod head use axle (11) to couple together respectively, tensioning hydro-cylinder (4) is equipped with in bottom in framework (2), and two tightener sprockets (15) are housed on axle (16), chain (9) is equipped with in drive sprocket (7) and tightener sprocket (15) outside, the common chain drive-belt (9) of drive sprocket (7) and tightener sprocket (15) is equipped with saddle type grip block (8) in the outside of chain (9) and is used for clamping coiled tubing (5).
2. a kind of clamping device of injection head of continuous string coiled tubing according to claim 1, it is characterized in that: the support of bearing (12) is housed on axle (11), a slide block (18) is respectively installed at the support of bearing (12) two ends, the support of bearing (12) can be gone up at axle (11) and freely rotate, a bearing support body (10) respectively is equipped with bearing pin (14) in the two ends of each support of bearing (12), bearing support body (10) can be gone up at bearing pin (14) and freely rotate, each bearing support body (10) is installed 3～4 clamping bearings (13) with bearing pin (17), clamping bearing (13) can upward freely rotate at bearing pin (17), the support of bearing (12) is one in major axis cover both sides three pairs of even structural members of otic placodes to be arranged, and three pairs of otic placodes all are provided with the through hole that links with bearing support body (10).
3. a kind of clamping device of injection head of continuous string coiled tubing according to claim 1, it is characterized in that: bearing support body (10) is with connecting rod structural member welded together in the middle of the double-deck equilateral triangle, the through hole of the cross-under bearing pin (14) that links with the support of bearing (12) is arranged at the top of bearing support body (10), the base has and clamps the bolt hole that bearing (13) links, and clamping bearing (13) is crossed bolt and is connected with the support of bearing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101105498A CN101781973B (en) | 2010-02-08 | 2010-02-08 | Clamping device of injection head of continuous string coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101105498A CN101781973B (en) | 2010-02-08 | 2010-02-08 | Clamping device of injection head of continuous string coiled tubing |
Publications (2)
| Publication Number | Publication Date |
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| CN101781973A true CN101781973A (en) | 2010-07-21 |
| CN101781973B CN101781973B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101105498A Active CN101781973B (en) | 2010-02-08 | 2010-02-08 | Clamping device of injection head of continuous string coiled tubing |
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| CN (1) | CN101781973B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206992A (en) * | 2011-04-01 | 2011-10-05 | 西南石油大学 | Crawler and crawling method for continuous oil pipe |
| WO2013155734A1 (en) * | 2012-04-19 | 2013-10-24 | 烟台杰瑞石油服务集团股份有限公司 | Coiled tubing clamping mechanism and injector head using clamping mechanism |
| CN104100218A (en) * | 2014-07-28 | 2014-10-15 | 泸州长江石油工程机械有限公司 | Injection head for coiled oil tube |
| CN104929537A (en) * | 2015-06-29 | 2015-09-23 | 山东胜利石油装备产业技术研究院 | Continuous snubbing operation well head device |
| CN105064934A (en) * | 2015-08-26 | 2015-11-18 | 东营天华石油技术开发有限公司 | Coiled tubing unit capable of achieving up-and-down operation under remote control and operating method thereof |
| WO2018040283A1 (en) * | 2016-08-30 | 2018-03-08 | 江苏和信石油机械有限公司 | Coiled tubing clamping device and injection head using same |
| CN109138873A (en) * | 2018-11-12 | 2019-01-04 | 王文希 | Coiled tubing injection device and system |
| CN109826616A (en) * | 2019-03-08 | 2019-05-31 | 新疆华隆油田科技股份有限公司 | Horizontal well Driver injection device |
| CN113530517A (en) * | 2021-09-17 | 2021-10-22 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371331Y (en) * | 1999-05-03 | 2000-03-29 | 刘国强 | Multipurpose oil pipe clamp for repairing well |
| CA2576448C (en) * | 2004-07-01 | 2012-11-13 | Terence Borst | Method and apparatus for drilling and servicing subterranean wells with rotating coiled tubing |
| CN101251006A (en) * | 2007-12-27 | 2008-08-27 | 四川宏华石油设备有限公司 | Intelligentized control apparatus for coiled tubing injection head gripper mechanism |
| CN201297137Y (en) * | 2008-11-27 | 2009-08-26 | 胜利油田高原石油装备有限责任公司 | A coiled tubing four chain clamping mechanism |
-
2010
- 2010-02-08 CN CN2010101105498A patent/CN101781973B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206992A (en) * | 2011-04-01 | 2011-10-05 | 西南石油大学 | Crawler and crawling method for continuous oil pipe |
| CN102206992B (en) * | 2011-04-01 | 2013-10-09 | 西南石油大学 | Crawler and crawling method for continuous oil pipe |
| WO2013155734A1 (en) * | 2012-04-19 | 2013-10-24 | 烟台杰瑞石油服务集团股份有限公司 | Coiled tubing clamping mechanism and injector head using clamping mechanism |
| CN104100218A (en) * | 2014-07-28 | 2014-10-15 | 泸州长江石油工程机械有限公司 | Injection head for coiled oil tube |
| CN104100218B (en) * | 2014-07-28 | 2016-09-07 | 泸州长江石油工程机械有限公司 | Injection head for coiled tubing |
| CN104929537A (en) * | 2015-06-29 | 2015-09-23 | 山东胜利石油装备产业技术研究院 | Continuous snubbing operation well head device |
| CN105064934A (en) * | 2015-08-26 | 2015-11-18 | 东营天华石油技术开发有限公司 | Coiled tubing unit capable of achieving up-and-down operation under remote control and operating method thereof |
| WO2018040283A1 (en) * | 2016-08-30 | 2018-03-08 | 江苏和信石油机械有限公司 | Coiled tubing clamping device and injection head using same |
| CN109138873A (en) * | 2018-11-12 | 2019-01-04 | 王文希 | Coiled tubing injection device and system |
| CN109826616A (en) * | 2019-03-08 | 2019-05-31 | 新疆华隆油田科技股份有限公司 | Horizontal well Driver injection device |
| CN113530517A (en) * | 2021-09-17 | 2021-10-22 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
| CN113530517B (en) * | 2021-09-17 | 2021-12-14 | 中煤科工集团西安研究院有限公司 | Combined segmented fracturing device, asynchronous two-way extraction system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101781973B (en) | 2012-07-04 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100721 Assignee: Sinopec Petroleum Engineering Machinery Co., Ltd. Assignor: SJ Petroleum Machinery Co., SINOPEC Contract record no.: 2014420000150 Denomination of invention: Clamping device of injection head of continuous string coiled tubing Granted publication date: 20120704 License type: Exclusive License Record date: 20140718 |
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| CP01 | Change in the name or title of a patent holder |
Address after: 434024 Hubei province Jingzhou Jingzhou District West Gate Longshan Temple Patentee after: SJ Petroleum Machinery Co., SINOPEC Address before: 434024 Hubei province Jingzhou Jingzhou District West Gate Longshan Temple Patentee before: SJ Petroleum Machinery Co. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171121 Address after: 434020 No. 1 Longshan Temple Street, Jingzhou District, Jingzhou, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Four Sinopec Petroleum Machinery Co. Ltd. Address before: 434024 Hubei province Jingzhou Jingzhou District West Gate Longshan Temple Patentee before: SJ Petroleum Machinery Co., SINOPEC |
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| TR01 | Transfer of patent right |