CN102140898A - Coiled tubing clamping device and injection head using same - Google Patents
Coiled tubing clamping device and injection head using same Download PDFInfo
- Publication number
- CN102140898A CN102140898A CN 201110066307 CN201110066307A CN102140898A CN 102140898 A CN102140898 A CN 102140898A CN 201110066307 CN201110066307 CN 201110066307 CN 201110066307 A CN201110066307 A CN 201110066307A CN 102140898 A CN102140898 A CN 102140898A
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- clamping device
- clamping block
- coiled tubing
- clamping
- block
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- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
Images
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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
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- 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)
- Clamps And Clips (AREA)
Abstract
The invention provides a coiled tubing clamping device and an injection head using the clamping device, belonging to the field of oil production and drilling equipment. The clamping device comprises a saddle-type clamping block, a clamping block seat and a gasket, wherein the saddle-type clamping block has a groove on the bottom; at least two pairs of hook blocks are arranged on the sidewall of the groove; the clamping block seat includes a hinge pin and a rolling shaft sleeve sheathed on the hinge pin; a position limiting stage and a bolt hole are arranged on the bottom of the clamping block seat; bosses corresponding to the hook blocks of the clamping block are arranged on both sides of the bottom of the clamping block seat; and two through holes are formed on the lower part of the clamping block seat along the hinge pin direction. The injection head comprises an oil pipe clamping device and a transmission chain, wherein the oil pipe clamping device is mounted on the transmission chain through two hinge pin holes on the clamping block seat. The injection head is convenient in maintenance and has long service life by using the rolling shaft sleeve to substitute for a bearing. The clamping blocks are convenient in replacement, and have a large floating range so as to reduce the abrasion of the oil pipes during operation.
Description
Technical field
The present invention relates to the oil drilling and extracting equipment field, particularly a kind of coiled tubing clamping device also relates to the injection head that adopts this clamping device.
Background technology
Injection head is the core component of coiled tubing equipment, and clamping device provides clamping force for injection head, is used to carry coiled tubing.There is following defective in the employed grip block that has rolling element on the injection head at present: the one, and the rolling bearing that uses on the clamping device, its application life is short, and it is difficult to safeguard, lubricated inconvenience, this is this grip block major defect that has rolling element; The 2nd, because the oil field shaft mouth size is various, employed coiled tubing size is also different, and normal wearing and tearing, and injection head needs often to change grip block when work, but used grip block adopts many places to fix on the clamping block, changes complicated.And adopt the fixing mode in many places to make the free gap of grip block on the clamping block less, the automatic adjustment when being unfavorable for grip block clamping oil pipe causes grip block big to the impact of oil pipe, to the serious wear of oil pipe.
Summary of the invention
The technical problem to be solved in the present invention provides the deficiency of a kind of coiled tubing clamping device with the clamping device that overcomes above-mentioned present use.
In order to overcome the above problems, the present invention adopts following scheme:
A kind of coiled tubing clamping device, comprise saddle type grip block and clamping block, it is characterized in that: described saddle type grip block gap is fixed on the described clamping block, and promptly saddle type grip block can have certain free gap in the vertical direction along the clamping oil pipe on the clamping block.
Described clamping block comprises bearing pin and is set in Rolling bearing on the described bearing pin, described clamping block is along the bearing pin direction, be provided with and be used for two through holes being connected with the injection head chain, the top of described clamping block is provided with three road dividing plates, is provided with the through hole that is used to install bearing pin on described dividing plate.
Further, the back of described saddle type grip block is provided with groove, is provided with at least two pairs of hooked scarfs at the sidewall of groove; The described clamping block back side is provided with limiting stand, the bolt hole that is used to limit described grip block position, and both sides are provided with the boss corresponding with the hooked scarf of described grip block.Grip block is held block by described hooked scarf and boss interlock mutually with adding, and limits the grip block free gap by the limiting stand and the bolt hole at the clamping block back side.
Further, corresponding boss is respectively three pairs on the hooked scarf of described grip block and the clamping block.
Further, the present invention also comprises the composite material pad that fills up between described grip block and described clamping block, and described pad is provided with corresponding groove and the hole of bottom limiting stand and anchoring filament hole with described clamping block.
Further, the end of described bearing pin also is provided with circlip for shaft.
Further, the circular arc of described saddle type grip block is provided with some grooves perpendicular to the clamping oil pipe.
Further, described Rolling bearing is a Ceramic shaft sleeve.
A kind of coiled tubing clamping device beneficial effect of the present invention is: one is to use high-abrasive material axle sleeve such as high-intensity pottery to replace rolling bearing, need not to lubricate, and the life-span is long, easily maintenance; The 2nd, owing to adopt block on the grip block, and adopt hooked scarf and boss to clamp and the bolt position limiting structure, it is very convenient to change grip block; Be because bigger gap arranged between block and caging bolt again, can be when oil pipe has displacement grip block can servo-actuated, avoid rigid extruding to oil pipe.
The present invention also provides a kind of oil pipe injection head, it is characterized in that: comprise above-described coiled tubing clamping device.Concrete scheme is as follows:
A kind of oil pipe injection head comprises chain drive-belt, gripper shoe, push pedal, adds locking oil cylinder, is characterized in: described oil pipe clamping device is installed on the described chain drive-belt.Clamping cylinder is fixed on the gripper shoe, described oil pipe clamping device is installed on the chain drive-belt, described push pedal is movably connected on the gripper shoe by connecting rod, the piston of clamping cylinder is pressed against described push pedal one side, and described push pedal another side is pressed on the rolling element of Holding seat of described oil pipe clamping device.When the oil pipe injection head was worked, push pedal compressed the oil pipe clamping device, and driving chain drives the oil pipe clamping device oil pipe is fed forward, and Rolling bearing rolls on chain pressing plate.
The beneficial effect of this oil pipe injection head is: owing to adopt oil pipe clamping device of the present invention, need not lubricate, make that the maintenance of oil pipe injection head is more convenient, and because the servo-actuated gap of this grip block is big, can be when not being very straight at oil pipe, grip block is avoided the injured or wearing and tearing of oil pipe automatically with moving, the working life that has simultaneously also prolonged the oil pipe injection head, this in addition injection head is very convenient when needs are changed the oil pipe clamping device.
Description of drawings
Fig. 1 is the structural representation of coiled tubing clamping device of the present invention;
Fig. 2 is the grip block front view of coiled tubing clamping device of the present invention;
Fig. 3 is the grip block lateral view of coiled tubing clamping device of the present invention;
Fig. 4 is the clamping block front view of coiled tubing clamping device of the present invention;
Fig. 5 is the clamping block lateral view of coiled tubing clamping device of the present invention;
Fig. 6 is the pad front view of coiled tubing clamping device of the present invention.
Fig. 7 is a kind of oil pipe injection head schematic diagram that adopts coiled tubing clamping device of the present invention.
In Fig. 1-Fig. 6: 1, grip block, 2, pad, 3, bolt, 4, the clamping block, 5, Rolling bearing, 6, bearing pin, 7, circlip for shaft; 101, groove, 102, hooked scarf, 103, groove; 201, groove, 202, the hole; 401, pin shaft hole, 402, through hole, 403, boss, 404, bolt hole, 405, limiting stand, 406, dividing plate.
In Fig. 7: 5, Rolling bearing, 11, oil pipe adds and hold device, 12, drive sprocket, 13, chain drive-belt, 14, gripper shoe, 15, push pedal, 16, add locking oil cylinder, 17, oil cylinder piston, 18, movable rod, 19, axle sleeve.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated:
As Fig. 1-shown in Figure 6: a kind of coiled tubing clamping device, comprise saddle type grip block 1 and clamping block 4, described saddle type grip block 1 gap is fixed on the described clamping block 4, be that saddle type grip block 1 can have certain free gap, the left and right sides in the vertical direction along the clamping oil pipe on clamping block 4.
Described clamping block 4 comprises bearing pin 6 and is set in ceramic Rolling bearing 5 on the described bearing pin 6, clamping block 4 is along bearing pin 6 directions, be provided with and be used for two through holes 402 being connected with the injection head chain, be provided with three road dividing plates 406 on the top of clamping block 4, on described dividing plate 406, be provided with the through hole 401 that is used to install bearing pin 6.
The back of described saddle type grip block 1 is provided with groove 103, is provided with three pairs of hooked scarfs 102 at the sidewall of groove 103; Described clamping block 4 back sides are provided with limiting stand 405, the bolt hole 404 that is used to limit described grip block 1 position, and both sides are provided with the three pair boss 403 corresponding with the hooked scarf 102 of described grip block 1.Grip block 1 is held block 4 by described hooked scarf 102 and boss 403 interlock mutually with adding, and limits grip block 1 free gap by the limiting stand 405 and the bolt hole 404 at clamping block 4 back sides, its flying height can avoid to add and hold oil pipe and cause damage.
The present invention also comprises the pad 2 that fills up between described grip block 1 and described clamping block 4, described pad 2 is provided with groove 201 and the hole 202 corresponding with the bottom limiting stand 405 of described clamping block 4 and anchoring filament hole 404, this pad can be rubber-like, wear-resisting composite material, as materials such as polyurethane, abrasive rubbers.
End at bearing pin 6 also is provided with circlip for shaft 3.
On the circular arc of saddle type grip block 1, be provided with some grooves 101, oil pipe added hold stronger perpendicular to the clamping oil pipe.
The present invention also provides a kind of injection head that adopts above-mentioned coiled tubing clamping device.Concrete scheme is as follows:
As shown in Figure 7: a kind of oil pipe injection head, comprise drive sprocket 12, driving chain 13, gripper shoe 14, push pedal 15, clamping cylinder 16, described gripper shoe 14, add the inside that locking oil cylinder 16, push pedal 15 etc. are installed in described chain drive-belt 13 closed loop that forms.Be characterized in: the described oil pipe clamping device 11 of many groups is installed on the described chain drive-belt 13 continuously.Gripper shoe 14 is fixed on the frame of injection head, clamping cylinder 16 is fixed on the gripper shoe 14, described oil pipe clamping device 11 is installed on the chain drive-belt 13 by through hole 402, described push pedal 15 is connected on the gripper shoe 14 by movable rod 18, an end of movable rod is an oscillating bearing in this example, be connected in the push pedal 15, the other end inserts in the axle sleeve 19 that is fixed on the gripper shoe 14, and movable rod 18 can slide at axle sleeve 19 with push pedal 15 stressing conditions.The oil cylinder piston 17 of clamping cylinder 16 is pressed against described push pedal 15 one sides, and described push pedal 15 another sides are pressed on the Rolling bearing 5 of Holding seat of described oil pipe clamping device 11.When the oil pipe injection head was worked, push pedal 14 compressed oil pipe clamping device 11, and drive sprocket 12 drives driving chain 13, and drive oil pipe clamping device 11 oil pipe is fed forward, Rolling bearing 5 rolls in push pedal 15, and two saddle types add under the effect of holding piece on two opposites, and oil pipe moves to direction initialization.
The above only is a better embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement etc., all should be included within protection scope of the present invention.
Claims (8)
1. coiled tubing clamping device, comprise saddle type grip block (1) and clamping block (4), it is characterized in that: described saddle type grip block (1) is fixed on the described clamping block (4), described clamping block (4) comprises bearing pin (6) and is set in Rolling bearing (5) on the described bearing pin, described clamping block (4) is along bearing pin (6) direction, be provided with two through holes (402) that are used for being connected with the injection head chain, the top of described clamping block (4) is provided with three road dividing plates (406), is provided with the through hole (401) that is used to install bearing pin (6) on described dividing plate (406).
2. coiled tubing clamping device according to claim 1, it is characterized in that: the back of described saddle type grip block (1) is provided with groove (103), sidewall at groove (103) is provided with at least two pairs of hooked scarfs (102), described clamping block (4) both sides are provided with the boss (403) corresponding with the hooked scarf (102) of described grip block (1), and the back side is provided with limiting stand (405), the bolt hole (404) that is used to limit described grip block (1) position.
3. coiled tubing clamping device according to claim 2 is characterized in that: hooked scarf (102) on the described saddle type grip block (1) and the boss (403) on the described clamping block (4) are respectively equipped with three pairs.
4. according to the described coiled tubing clamping device of claim 1-3, it is characterized in that: also comprise the pad (2) that fills up between described grip block (1) and described clamping block (4), described pad (2) is provided with corresponding groove (201) and hole (202) of bottom limiting stand and anchoring filament hole with described clamping block (4).
5. coiled tubing clamping device according to claim 4 is characterized in that: the end of described bearing pin (6) also is provided with circlip for shaft (7).
6. coiled tubing clamping device according to claim 5 is characterized in that: the circular arc of described saddle type grip block (1) is provided with some grooves perpendicular to the clamping oil pipe (101).
7. coiled tubing clamping device according to claim 6 is characterized in that: described Rolling bearing (5) is a Ceramic shaft sleeve.
8. an oil pipe injection head is characterized in that: comprise each described coiled tubing clamping device as claim 1-7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110066307 CN102140898B (en) | 2011-03-18 | 2011-03-18 | Coiled tubing clamping device and injection head using same |
| PCT/CN2011/071987 WO2012126169A1 (en) | 2011-03-18 | 2011-03-21 | Gripping device for coiled tubing and injector using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110066307 CN102140898B (en) | 2011-03-18 | 2011-03-18 | Coiled tubing clamping device and injection head using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102140898A true CN102140898A (en) | 2011-08-03 |
| CN102140898B CN102140898B (en) | 2013-04-17 |
Family
ID=44408664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110066307 Active CN102140898B (en) | 2011-03-18 | 2011-03-18 | Coiled tubing clamping device and injection head using same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102140898B (en) |
| WO (1) | WO2012126169A1 (en) |
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| CN103105264A (en) * | 2013-02-04 | 2013-05-15 | 侯如升 | Pressure meter mounting base for pressure testing machine |
| 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 |
| CN103510892A (en) * | 2012-06-27 | 2014-01-15 | 中国石油天然气集团公司 | Fixing structure capable of fast replacing clamping block for coiled tubing injection head |
| WO2014079085A1 (en) * | 2012-11-21 | 2014-05-30 | 烟台杰瑞石油服务集团股份有限公司 | Clamping mechanism of coiled tubing |
| CN103884496A (en) * | 2012-12-20 | 2014-06-25 | 中国石油天然气集团公司 | Coiled tubing injection head test simulative loading device |
| CN104251130A (en) * | 2013-06-28 | 2014-12-31 | 中国石油天然气集团公司 | Transmission device for providing injection force for sieve tube special for coal bed gas |
| CN104790890A (en) * | 2015-03-31 | 2015-07-22 | 南京晨光集团有限责任公司 | Coiled tubing four-drive injection head |
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Cited By (158)
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|---|---|---|---|---|
| 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 |
| CN103510892A (en) * | 2012-06-27 | 2014-01-15 | 中国石油天然气集团公司 | Fixing structure capable of fast replacing clamping block for coiled tubing injection head |
| WO2014079085A1 (en) * | 2012-11-21 | 2014-05-30 | 烟台杰瑞石油服务集团股份有限公司 | Clamping mechanism of coiled tubing |
| US9617808B2 (en) | 2012-11-21 | 2017-04-11 | Yantai Jereh Oilfield Services Group Co., Ltd. | Continuous oil pipe clamp mechanism |
| CN103884496A (en) * | 2012-12-20 | 2014-06-25 | 中国石油天然气集团公司 | Coiled tubing injection head test simulative loading device |
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| CN102140898B (en) | 2013-04-17 |
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Inventor after: Liu Dong Inventor after: Yu Qingfeng Inventor after: Fang Jilei Inventor before: Li Gerui Inventor before: Yu Qingfeng Inventor before: Fang Jilei Inventor before: Liu Dong |
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