CN202100221U - Coiled tubing fracturing string suspension tripping device - Google Patents
Coiled tubing fracturing string suspension tripping device Download PDFInfo
- Publication number
- CN202100221U CN202100221U CN2011202150611U CN201120215061U CN202100221U CN 202100221 U CN202100221 U CN 202100221U CN 2011202150611 U CN2011202150611 U CN 2011202150611U CN 201120215061 U CN201120215061 U CN 201120215061U CN 202100221 U CN202100221 U CN 202100221U
- Authority
- CN
- China
- Prior art keywords
- coiled tubing
- ring
- string
- outer tube
- fracturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract 1
- 241000282472 Canis lupus familiaris Species 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a coiled tubing fracturing string suspension disconnecting device, which consists of a hanger and a disconnecting device; the hanger is fixedly arranged below the wellhead hanging sealing device; the upper end of the disconnecting connector is connected with a continuous oil pipe, and the lower end of the disconnecting connector is connected with a fracturing pipe string; the utility model discloses a coiled tubing fracturing string hangs disconnect-connect device can be at the well head smoothly with fracturing string and coiled tubing throw off, make coiled tubing can take out from well head and preventer to hang the fracturing string below the well head, solved coiled tubing fracturing tool string overlength effectively, can not play in time after the stratum fracturing and influence the problem of production; the utility model discloses not only can realize taking the pressure operation, the protective stratum, the length of fracturing tool string will not receive the restriction of height between preventer and the wellhead main gate moreover, can adjust at will, makes the card between the tool string packer apart from greatly increased, the oil gas layer scope that can reform transform also greatly increased.
Description
Technical field
The utility model is about coiled tubing fracturing tool in a kind of oil field development, relate in particular to a kind of can coiled tubing and fracturing tool pipe string be thrown off at the well head place and will manage go here and there the suspension uncoupling device of staying the well head place.
Background technology
In existing coiled tubing fracturing technology, fracturing tool pipe polyphone is connected on the coiled tubing and with constructing in the oil pipe lower going-into-well; After pressure break finished, the fracturing tool string tripped out with coiled tubing simultaneously; But because after the pressure break, the flow conductivity on stratum improves greatly, flow quantity increases in the well thereby cause, and pressure increases substantially; In order to prevent the well head blowing, the scene has two kinds of schemes to solve, and first kind of scheme is exactly Operating Pressure, and the external diameter of external coiled tubing fracturing tool pipe string is less than the internal diameter of well head; Greater than the preventer internal diameter, can when treating that the pipe string all trips out the well head main shutter, turn off main shutter with mentioning the preventer below on the pipe string; Lay down preventer, take out the tool pipe string, but owing to receive the restriction of height between preventer and the well head main shutter; The length of pressure break pipe string can only be less than 7.6m, and like this, the card of packer is apart from just also little than 7.6m; Can only transform the very thin oil reservoir of 1.5-6.1m, and at the scene, the oil reservoir that needs to transform much all is thicker oil reservoir; The packer card of fracturing tool pipe string is far longer than 7.6m apart from needs, so just can not turn off the well head main shutter, extraction tool pipe string; The result who causes be exactly not only coiled tubing rise to come out and influence production, and the coiled tubing car rests on the scene all the time, caused the waste of great amount of manpower and material resources.Second kind of scheme is to use the mode of kill job to take out fracturing tool pipe string, but does easy destruction stratum like this, makes the oil recovery DeGrain.
In view of this, the inventor relies on relevant design and manufacturing experience for many years, proposes a kind of coiled tubing fracturing string suspension uncoupling device, to overcome the defective of prior art.
The utility model content
The purpose of the utility model is to provide a kind of coiled tubing fracturing string suspension uncoupling device; Can smoothly pressure break pipe string and coiled tubing be thrown off at well head; Coiled tubing is extracted out in well head and preventer; And pressure break pipe string is suspended on well head below, and do not influence ordinary production to reach, effectively solve the long problem that behind formation breakdown, can not in time trip out of coiled tubing fracturing tool pipe string.
The purpose of the utility model is achieved in that a kind of coiled tubing fracturing string suspension uncoupling device, and said suspension uncoupling device is made up of a hanger and an on-off connector; Said hanger is fixedly installed on the below of well head suspension sealing device; Said on-off connector upper end connects coiled tubing, and the on-off connector lower end connects pressure break pipe string; Said on-off connector comprises an outer tube; The outer tube bottom is fixedly connected a lower contact; In outer tube, wear an inner central tube by outer sleeve upper, outer tube is tilted to outer wall by inwall and is provided with oblique open-work, and the outside wall surface of the inner central tube corresponding with oblique open-work is provided with groove; One lock dog passes said oblique open-work and is fastened in the groove of inner central tube, so that outer tube is connected with inner central tube; One sheath is arranged on the outer tube outer wall in the said lock dog outside; Said sheath upper end is inboard to connect an adjustable ring by shear pin, and adjustable ring extends setting to outer sleeve upper, and the outer sleeve upper outside is fixed with a relay ring, on the outer tube outer wall between said relay ring and the adjustable ring, is provided with jump ring; Said hanger is made up of the force bearing ring that a tubulose catching device and catching device inside lower end fixedly install; The internal diameter of said force bearing ring is greater than the external diameter of relay ring and less than the external diameter of jump ring and sheath; The bottom of said force bearing ring forms first inclined-plane of flaring from inside to outside, and the top of said jump ring forms second inclined-plane corresponding with first inclined-plane.
In a preferred embodiments of the utility model, the oblique open-work on the said outer tube is symmetrical set two.
In a preferred embodiments of the utility model, said lock dog bottom is provided with chamfering with the joint end of groove.
In a preferred embodiments of the utility model, said force bearing ring and catching device are by being threaded, and the force bearing ring internal diameter is less than the catching device internal diameter, and force bearing ring and catching device junction form an end difference.
In a preferred embodiments of the utility model, on said outer tube outer wall and be positioned at oblique open-work upside and be provided with a shaft shoulder, the bottom of said adjustable ring is resisted against on this shaft shoulder.
In a preferred embodiments of the utility model, said lower contact upper end and outer tube bottom are by being threaded.
From the above mentioned; The coiled tubing fracturing string suspension uncoupling device of the utility model can be thrown off pressure break pipe string and coiled tubing at well head smoothly; Coiled tubing can be extracted out in well head and preventer; And pressure break pipe string is suspended on well head below, it is long to have solved coiled tubing fracturing tool pipe string effectively, behind formation breakdown, can not in time trip out and influences the problem of production; The utility model not only can be realized Operating Pressure; The protection stratum, and the length of fracturing tool string will not receive between preventer and the well head main shutter restriction of height, can arbitrarily adjust; Card distance between the tool string packer is increased greatly, and transformable oil-gas Layer scope also increases greatly.
Description of drawings
Following accompanying drawing only is intended to the utility model is done schematic illustration and explanation, does not limit the scope of the utility model.Wherein:
Fig. 1: the structural representation that hangs the uncoupling device for the coiled tubing fracturing string of the utility model.
Fig. 2: be the structural representation of the utility model coiled tubing fracturing string suspension uncoupling device installation site.
Fig. 3 A: be the structural representation one of jump ring.
Fig. 3 B: be the structural representation two of jump ring.
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present.
Like Fig. 1, shown in Figure 2, the utility model proposes a kind of coiled tubing fracturing string suspension uncoupling device 100, and said suspension uncoupling device 100 is made up of an on-off connector 1 and a hanger 2; Said hanger 2 is fixedly installed on the below of well head suspension sealing device 3, and its effect is exactly when pressure break finishes after, the docking of realization and on-off connector 1 below well head, and with the pressure break pipe tandem junction of coiled tubing bottom on said hanger 2; Said on-off connector 1 upper end connects coiled tubing 4, and on-off connector 1 lower end connects pressure break pipe string 5; As shown in Figure 1, said on-off connector 1 comprises an outer tube 11, and outer tube 11 bottoms are fixedly connected a lower contact 12, and in this embodiment, said lower contact 12 upper ends and outer tube 11 bottoms are by being threaded; The lower end of said lower contact 12 connects said pressure break pipe string 5; In outer tube, wear an inner central tube 13 by outer tube 11 upper ends, the top of this inner central tube 13 connects said coiled tubing 4; As shown in Figure 1, outer tube 11 is tilted to outer wall by inwall and is provided with oblique open-work 111; In this embodiment, the oblique open-work 11 on the said outer tube 11 can be symmetrical set two; Said oblique open-work 11 is 60 ° with axis angle the best of outer tube 11; The outside wall surface of the inner central tube 13 corresponding with oblique open-work 111 is provided with groove 131, one lock dogs 14 and passes said oblique open-work 111 and be fastened in the groove 131 of inner central tube, and the joint end of said lock dog 14 bottoms and groove 131 is provided with chamfering 141 (as shown in Figure 1); One sheath 15 is set on outer tube 11 outer walls in said lock dog 14 outsides; Thus; Outer tube 11 just fixes as one with inner central tube 13; Contact when sheath 15 slides and loses with lock dog 14, inner central tube 13 will the chamfering 141 along lock dog 14 back down lock dog under the effect of upper lifting force, and inner central tube 13 will separate with outer tube 11; Inboard, said sheath 15 upper end connects an adjustable ring 17 by shear pin 16; On said outer tube 11 outer walls and be positioned at oblique open-work 111 upsides and be provided with a shaft shoulder 112; The bottom of said adjustable ring 17 is resisted against on this shaft shoulder 112; Setting is extended to the upper end of outer tube 11 in adjustable ring 17 upper ends; The outside, outer tube 11 upper ends is fixed with a relay ring 19, on outer tube 11 outer walls between said relay ring 19 and the adjustable ring 17, is provided with jump ring 18; In this embodiment, said jump ring 18 is the elastic ring body (shown in Fig. 3 A, Fig. 3 B) that a side is provided with pass through openings 182, but radial contraction behind jump ring 18 pressurizeds; Said hanger 2 reaches the force bearing ring 22 that fixedly installs in the catching device inside lower end by a tubulose catching device 21 and constitutes; The internal diameter of said force bearing ring 22 is greater than the external diameter of relay ring 19 and less than the external diameter of jump ring 18 and sheath 15; Said force bearing ring 22 and catching device 21 are by being threaded, and force bearing ring 22 internal diameters are less than catching device 21 internal diameters, and force bearing ring 22 forms an end difference 222 with catching device 21 junctions; The bottom of said force bearing ring 22 forms first inclined-plane 221 of flaring from inside to outside, and the top of said jump ring 18 forms second inclined-plane 181 corresponding with first inclined-plane 221.
As shown in Figure 2, the use of the coiled tubing fracturing string of the utility model suspension uncoupling device is: before the construction, on-off connector 1 upper end is connected with coiled tubing 4, on-off connector 1 lower end connects with fracturing tool pipe string 5 also in the lower going-into-well; Hanger 2 linked through screw thread with well head suspension sealing device 3 hangs on the well head below, sets well head, when pressing crack construction begins, fracturing tool pipe string 5 is lowered into designated depth carries out pressure break; After pressure break finishes, on carry and reclaim coiled tubing 4, on-off connector 1 arrives hanger 2 belows; Carry coiled tubing in the continuation, the force bearing ring 22 of hanger 2 comes in contact with the jump ring 18 of on-off connector 1, because the interaction on second inclined-plane 181 of first inclined-plane 221 of force bearing ring 22 and jump ring 18; The inwall of force bearing ring 22 slips over jump ring 18, and also the top is to sheath 15 with adjustable ring 6, and sheath 15 is cut off shear pin 16 under the active force of force bearing ring 22, and sheath 15 slides into outer tube 11 bottoms with force bearing ring 22; At this moment, inner central tube 13 backs down lock dog 14 under the effect of coiled tubing 4 upper lifting forces, and inner central tube 13 has just been realized and the separating of outer tube 11; At this moment; Inner central tube 13 is along with coiled tubing 4 makes progress through shifting out well head behind the said catching device 21, and jump ring 18 flicks again after slipping over force bearing ring 22 inwalls, and fastens the end difference 222 in force bearing ring 22 upper ends by the bottom of jump ring 18; Thus, outer tube 11, lower contact 12 and pressure break pipe string 5 are suspended on the said hanger 2; When inner central tube 13 passes well head main shutter 6, just can turn off main shutter, and reclaim coiled tubing 4; And then open the main shutter production of normally recovering the oil.
From the above mentioned; Because the coiled tubing fracturing string of the utility model suspension uncoupling device can be thrown off pressure break pipe string and coiled tubing at well head smoothly; Coiled tubing is extracted out in well head and preventer; And pressure break pipe string is suspended on well head below, it is long to have solved coiled tubing fracturing tool pipe string effectively, behind formation breakdown, can not in time trip out and influences the problem of production; The utility model not only can be realized Operating Pressure; The protection stratum, and the length of fracturing tool string will not receive between preventer and the well head main shutter restriction of height, can arbitrarily adjust; Card distance between the tool string packer is increased greatly, and transformable oil-gas Layer scope also increases greatly.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (6)
1. a coiled tubing fracturing string hangs the uncoupling device, and it is characterized in that: said suspension uncoupling device is made up of a hanger and an on-off connector; Said hanger is fixedly installed on the below of well head suspension sealing device; Said on-off connector upper end connects coiled tubing, and the on-off connector lower end connects pressure break pipe string; Said on-off connector comprises an outer tube; The outer tube bottom is fixedly connected a lower contact; In outer tube, wear an inner central tube by outer sleeve upper; Outer tube is tilted to outer wall by inwall and is provided with oblique open-work, and the outside wall surface of the inner central tube corresponding with oblique open-work is provided with groove, and a lock dog passes said oblique open-work and is fastened in the groove of inner central tube; One sheath is arranged on the outer tube outer wall in the said lock dog outside; Said sheath upper end is inboard to connect an adjustable ring by shear pin, and adjustable ring extends setting to outer sleeve upper, and the outer sleeve upper outside is fixed with a relay ring, on the outer tube outer wall between said relay ring and the adjustable ring, is provided with jump ring; Said hanger is made up of the force bearing ring that a tubulose catching device and catching device inside lower end fixedly install; The internal diameter of said force bearing ring is greater than the external diameter of relay ring and less than the external diameter of jump ring and sheath; The bottom of said force bearing ring forms first inclined-plane of flaring from inside to outside, and the top of said jump ring forms second inclined-plane corresponding with first inclined-plane.
2. coiled tubing fracturing string suspension uncoupling device as claimed in claim 1, it is characterized in that: the oblique open-work on the said outer tube is symmetrical set two.
3. coiled tubing fracturing string suspension uncoupling device as claimed in claim 1 is characterized in that: said lock dog bottom is provided with chamfering with the joint end of groove.
4. coiled tubing fracturing string as claimed in claim 1 suspension uncoupling device is characterized in that: said force bearing ring and catching device are by being threaded, and the force bearing ring internal diameter is less than the catching device internal diameter, and force bearing ring and catching device junction form an end difference.
5. coiled tubing fracturing string as claimed in claim 1 suspension uncoupling device is characterized in that: on said outer tube outer wall and be positioned at oblique open-work upside and be provided with a shaft shoulder, the bottom of said adjustable ring is resisted against on this shaft shoulder.
6. coiled tubing fracturing string as claimed in claim 1 suspension uncoupling device is characterized in that: said lower contact upper end and outer tube bottom are by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202150611U CN202100221U (en) | 2011-06-23 | 2011-06-23 | Coiled tubing fracturing string suspension tripping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202150611U CN202100221U (en) | 2011-06-23 | 2011-06-23 | Coiled tubing fracturing string suspension tripping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100221U true CN202100221U (en) | 2012-01-04 |
Family
ID=45386237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202150611U Expired - Lifetime CN202100221U (en) | 2011-06-23 | 2011-06-23 | Coiled tubing fracturing string suspension tripping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251753A (en) * | 2011-06-23 | 2011-11-23 | 中国石油天然气股份有限公司 | Coiled tubing fracturing string suspension tripping device |
-
2011
- 2011-06-23 CN CN2011202150611U patent/CN202100221U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251753A (en) * | 2011-06-23 | 2011-11-23 | 中国石油天然气股份有限公司 | Coiled tubing fracturing string suspension tripping device |
| CN102251753B (en) * | 2011-06-23 | 2013-10-16 | 中国石油天然气股份有限公司 | Coiled tubing fracturing string suspension tripping device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102251753B (en) | Coiled tubing fracturing string suspension tripping device | |
| CN204326985U (en) | A kind of coiled tubing speed tubing string | |
| CN104358524A (en) | Coiled tubing speed pipe column and liquid draining and gas collecting method | |
| CN105275417A (en) | Method for running in and out coiled tubing production string | |
| CN204738799U (en) | Double -barrelled water injection tubular column in pit | |
| CN202900175U (en) | Pressure measuring well completion pipe string for suspension pressure gauge of gas storage | |
| CN104343424A (en) | Coalbed-methane horizontal-well PE (poly ethylene) screen pipe well completion application process method | |
| CN201714338U (en) | Multifunctional double-slip packer | |
| CN202100221U (en) | Coiled tubing fracturing string suspension tripping device | |
| CN103015929B (en) | Force-sensing positioning throwing and fishing tool | |
| CN204283371U (en) | Well completion pipe string | |
| CN207598221U (en) | A kind of layering squeezes sand preventing tool | |
| CN201865632U (en) | Wax removing and preventing device for oil well | |
| CN204386577U (en) | The protective jacket in sliding sleeve fracturing hole and sliding sleeve | |
| CN204532299U (en) | Underground layered ball throwing and collecting tool | |
| CN202745939U (en) | Coiled tubing hanger | |
| CA2897621C (en) | Method for zone isolation in a subterranean well | |
| CN203394469U (en) | PE screen pipe well completion device for coalbed methane horizontal well | |
| CN205688441U (en) | A kind of casing bit pulling out anchor cable | |
| CN205189839U (en) | Oil extraction device | |
| CN201687422U (en) | Self-seal lifting type tubing anchor device | |
| CN204877415U (en) | Horizontal well staged fracturing tubular column | |
| CN202090894U (en) | slip lifting type oil drain device | |
| CN203050579U (en) | Mechanical release device for coiled tubing fracturing | |
| CN202832337U (en) | Side-open type sucker rod overshot |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Zhijun Inventor after: Yang Shengwen Inventor after: Zhou Rui Inventor after: Zhang Jun Inventor after: Li Jun Inventor after: Han Feng Inventor after: Xu Le Inventor after: Sun Meiling Inventor after: Bai Jianfeng Inventor after: Lin Shulong Inventor after: Wang Zhansheng Inventor after: Chen Shuguang Inventor after: Li Juanjuan Inventor after: Xiong Mei Inventor after: Chen Liaowang Inventor after: Song Xianghu Inventor after: Zhou Kun Inventor after: Zhang Jingli Inventor after: Han Dongshen Inventor after: Zhang Ziming Inventor after: Song Xinmin Inventor before: Wu Zhijun Inventor before: Yang Shengwen Inventor before: Chen Shuguang Inventor before: Chen Liaowang Inventor before: Song Xianghu Inventor before: Zhou Kun Inventor before: Zhang Jingli Inventor before: Han Dongshen Inventor before: Zhang Ziming Inventor before: Song Xinmin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WU ZHIJUN CHEN SHUGUANG CHEN LIAOWANG SONG XIANGHU ZHOU KUN ZHANG JINGLI HAN DONGSHEN ZHANG ZIMING SONG XINMIN YANG SHENGWEN TO: WU ZHIJUN CHEN SHUGUANG CHEN LIAOWANG SONG XIANGHU ZHOU KUN ZHANG JINGLI HAN DONGSHEN ZHANG ZIMING SONG XINMIN YANG SHENGWEN ZHOU RUI ZHANG JUN LI JUN HAN FENG XU LE SUN MEILING BAI JIANFENG LIN SHULONG WANG ZHANSHENG LI JUANJUAN XIONG MEI |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120104 Effective date of abandoning: 20131016 |
|
| RGAV | Abandon patent right to avoid regrant |