CN201924856U - Device capable of fishing bottom plugs of expansion pipe launching chambers - Google Patents
Device capable of fishing bottom plugs of expansion pipe launching chambers Download PDFInfo
- Publication number
- CN201924856U CN201924856U CN2010206930035U CN201020693003U CN201924856U CN 201924856 U CN201924856 U CN 201924856U CN 2010206930035 U CN2010206930035 U CN 2010206930035U CN 201020693003 U CN201020693003 U CN 201020693003U CN 201924856 U CN201924856 U CN 201924856U
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- ball seat
- plug
- screw thread
- tail pipe
- expansion tube
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Abstract
The utility model relates to the technical field of expansion tool launching chamber bottom plugs used for oil well expansion pipes, in particular to a device capable of fishing bottom plugs of expansion pipe launching chambers. The device comprises a setting plug, an elastic clamp sleeve, a crossover coupling, a pin and a pressure holding ball seat, the elastic clamp sleeve is C-shaped and can be clamped on the inner wall of an expansion pipe, an axial plug through hole is arranged in the setting plug, an annular cavity is arranged on the inner wall of the lower portion of the plug through hole, a fishing step is formed between the upper end surface of the annular cavity and the inner wall of the plug through hole, and a setting slope which is a big end up is arranged in the middle of the outer side of the setting plug. The device is reasonable and compact in structure and convenient in use, the setting plug moves downwards by the aid of ball injection pressure holding, the elastic clamp sleeve is expanded so as to be tightly clamped on the inner wall of the expansion pipe to realize setting, and the setting plug is lifted upwards to shear off the pin so as to realize fishing. In addition, the device can also be used for a solid expansion pipe hanger, omits grinding, is convenient for fishing, accordingly greatly reduces construction risks, and has the advantages of safety, reliability, capability of saving labor, high efficiency, simplicity and convenience.
Description
Technical field
The utility model relates to plugging technique field at the bottom of the bloat tool bay that the oil well expansion tube uses, and is a kind of block apparatus at the bottom of the expansion tube bay of salvaging.
Background technology
Bulged tube technology be with under the tubing string in well, with machinery or hydraulic method, make tubing string generation permanent plastic deformation, for easily collapse, leakiness stratum or run-down sleeve pipe patch installing, well or flow string internal diameter are enlarged, be the completely new approach of drilling well, completion and well workover, efficiently solve the insoluble big well section of well workover engineering in the past sleeve pipe and repair problem that the solid expansion pipe technology has extensively applied to the workover treatment that reason such as the corrosion failure, bad break of oil well casing causes.Stifled at the bottom of the bloat tool bay at present all is to fix on the expansion tube with the pin riveting, after expansion tube subsidy operation is finished, to the stifled treatment process in the end generally based on grinding, length not only consuming time, but also may cause upper expansion pipe back-off, stifled fall into the shaft bottom and also may cause second accident if grind the incomplete end.Therefore, stifledly at the bottom of the bloat tool bay that existing oil well expansion tube uses have the following disadvantages in actual use: grind waste time and energy, efficiency of construction is lower, have potential safety hazard.
Summary of the invention
The utility model provides a kind of block apparatus at the bottom of the expansion tube bay of salvaging, overcome the deficiency of above-mentioned prior art, it can effectively solve, and the stifled grinding that exists is wasted time and energy at the bottom of the bloat tool bay that existing oil well expandable tubular uses, efficiency of construction is lower, have the problem of potential safety hazard.
The technical solution of the utility model realizes by following measure: a kind ofly salvage block apparatus at the bottom of the expansion tube bay, comprise setting plug, c-shaped and can be clamped on elastic ferrule, crossover sub on the expansion tube inwall, can be stuck in the pin on the expansion tube bottom surface and the ball seat that builds the pressure; There is axial plug through hole the inside that sets plug, on the lower inner wall of plug through hole annular cavity is arranged, form between the upper surface of annular cavity and the plug through-hole wall and salvage step, the outer middle side part that sets plug have up big and down small set domatic, elastic ferrule be sleeved on set domatic on, be distributed with latch on the lateral surface of elastic ferrule, the bottom that sets plug is installed with crossover sub, the crossover sub outside is installed with and is no less than one pin, the bottom of crossover sub is installed with the ball seat that builds the pressure, and the ball seat inner chamber that can accept pitching is arranged in the body of the ball seat that builds the pressure.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
The above-mentioned outer lower portion that sets plug can have the plug axle journal of external diameter less than the elastic ferrule internal diameter, there is the plug external screw thread in the plug outside that sets of plug axle journal below, screw thread on the joint is arranged at the internal chamber wall top of crossover sub, crossover sub is fixedly mounted on by screw thread on the joint and plug external screw thread and sets the plug bottom, and the up big and down small cutting ferrule conical surface is arranged at the internal chamber wall top of elastic ferrule.
Above-mentioned ball seat inner chamber can comprise ball seat hole, up big and down small taper ball seat face and discharge orifice, the upper end in ball seat hole is positioned on the upper surface of the ball seat that builds the pressure, the upper end of taper ball seat face is connected with the lower end in ball seat hole, the lower end of taper ball seat face is connected with the upper end of discharge orifice, and the lower end of discharge orifice is positioned on the lower surface of the ball seat that builds the pressure.
Above-mentioned crossover sub and build the pressure and to be installed with the salvaging tail pipe between the ball seat, the upper outside and the outside, bottom of salvaging tail pipe have last tail pipe external screw thread and following tail pipe external screw thread respectively, screw thread under the joint is arranged at the internal chamber wall bottom of crossover sub, salvages tail pipe top is fixedly mounted on crossover sub by screw thread under last tail pipe external screw thread and the joint bottom; Have ball seat that screw thread is installed on the upper inside wall of ball seat inner chamber, the ball seat that builds the pressure by ball seat screw thread is installed and following tail pipe external screw thread is fixedly mounted on salvaging tail pipe bottom.
The above-mentioned upper outside that sets plug can have and is no less than one seal groove and sealing ring is installed.
The up big and down small guiding conical surface can be arranged on the upper inside wall of above-mentioned plug through hole.
The top of above-mentioned elastic ferrule can have and is no less than one radial indentation.
The quantity of above-mentioned radial indentation can be three or six and evenly distributes along circumference.
The utility model reasonable and compact in structure, easy to use, it builds the pressure to make by pitching and sets plug and move down, strutting elastic ferrule makes it to be clamped on the expansion tube inwall and to realize setting, by on carry and set plug and cut off pin and realize to salvage, also can be used in the solid expansion pipe hanger, owing to need not grind and be convenient to salvage, greatly reduce construction risk, have the characteristics of safe and reliable, laborsaving efficient, simple and effective.
Description of drawings
Accompanying drawing 1 is looked the broken section structural representation for the master that the utility model most preferred embodiment is installed on the expansion tube.
Coding in the accompanying drawing is respectively: 1 for setting plug, and 2 is expansion tube, and 3 is elastic ferrule, and 4 is crossover sub, 5 is pin, and 6 are the ball seat that builds the pressure, and 7 is the plug through hole, and 8 is annular cavity, 9 for salvaging step, and 10 is domatic for setting, and 11 is latch, 12 is the plug axle journal, and 13 is the ball seat hole, and 14 are taper ball seat face, 15 is discharge orifice, and 16 for salvaging tail pipe, and 17 is seal groove, 18 is sealing ring, and 19 are the guiding conical surface, and 20 is radial indentation.
The specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description is described, as: upper and lower, about etc. the position relation be what to determine according to the Butut direction of Figure of description.
Below in conjunction with most preferred embodiment and accompanying drawing the utility model is further described:
As shown in Figure 1, this can be salvaged block apparatus at the bottom of the expansion tube bay and comprises and set plug 1, c-shaped and can be clamped on elastic ferrule 3, crossover sub 4 on expansion tube 2 inwalls, can be stuck in the pin 5 on expansion tube 2 bottom surfaces and the ball seat 6 that builds the pressure; There is axial plug through hole 7 inside that sets plug 1, annular cavity 8 is arranged on the lower inner wall of plug through hole 7, form between the upper surface of annular cavity 8 and plug through hole 7 inwalls and salvage step 9, the outer middle side part that sets plug 1 has and up big and down small sets domatic 10, elastic ferrule 3 is sleeved on and sets on domatic 10, be distributed with latch 11 on the lateral surface of elastic ferrule 3, the bottom that sets plug 1 is installed with crossover sub 4, crossover sub 4 outsides are installed with the pin 5 that is no less than, the bottom of crossover sub 4 is installed with the ball seat 6 that builds the pressure, and the ball seat inner chamber that can accept pitching is arranged in the body of the ball seat 6 that builds the pressure.External diameter under elastic ferrule 3 natures is greater than expansion tube 2 internal diameters, latch 11 is preferably the triangle latch, and the latch crown toward the outer side the below so that tighten expansion tube 2 inwalls more solid and reliablely, when the utility model is packed expansion tube 2 into, setting setting of plug 1 domatic 10 struts elastic ferrule 3 latch 11 is stuck on expansion tube 2 inwalls, only need overcome elastic ferrule 3 self elastic force effect down and the frictional force between the expansion tube 2, pin 5 plays the role of positioning, and moves on restriction the utility model in the lower tubular column process.After the expansion end of job, only need next time fishing string to block on salvaging step 9 backs and carry and cut off pin 5, the utility model can be salvaged out fully, not only saved rotary operation, saved man-hour, and easy and simple to handle, safe and reliable.
Can be according to actual needs, to above-mentioned salvage the expansion tube bay at the bottom of block apparatus make further optimization and/or improvements:
As shown in Figure 1, the outer lower portion that sets plug 1 has the plug axle journal 12 of external diameter less than elastic ferrule 3 internal diameters, there is the plug external screw thread in the plug outside that sets of plug axle journal 12 belows, screw thread on the joint is arranged at the internal chamber wall top of crossover sub 4, crossover sub 4 is fixedly mounted on by screw thread on the joint and plug external screw thread and sets plug 1 bottom, and the up big and down small cutting ferrule conical surface is arranged at the internal chamber wall top of elastic ferrule 3.When packing expansion tube 2 into, elastic ferrule 3 is sleeved on plug axle journal 12 positions, and the utility model can be packed in the expansion tube 2 with comparalive ease, the cutting ferrule conical surface can with set domatic 10 and match, move on the guiding elastic ferrule 3.
As shown in Figure 1, the ball seat inner chamber comprises ball seat hole 13, up big and down small taper ball seat face 14 and discharge orifice 15, the upper end in ball seat hole 13 is positioned on the upper surface of the ball seat 6 that builds the pressure, the upper end of taper ball seat face 14 is connected with the lower end in ball seat hole 13, the lower end of taper ball seat face 14 is connected with the upper end of discharge orifice 15, and the lower end of discharge orifice 15 is positioned on the lower surface of the ball seat 6 that builds the pressure.Taper ball seat face 14 can be accepted pitching.
As shown in Figure 1, crossover sub 4 and building the pressure is installed with between the ball seat 6 salvages tail pipe 16, the upper outside and the outside, bottom of salvaging tail pipe 16 have last tail pipe external screw thread and following tail pipe external screw thread respectively, screw thread under the joint is arranged at the internal chamber wall bottom of crossover sub 4, salvages tail pipe 16 tops are fixedly mounted on crossover sub 4 by screw thread under last tail pipe external screw thread and the joint bottom; Have ball seat that screw thread is installed on the upper inside wall of ball seat inner chamber, the ball seat 6 that builds the pressure by ball seat screw thread is installed and following tail pipe external screw thread is fixedly mounted on salvaging tail pipe 16 bottoms.Salvaging tail pipe 16 is convenient to fishing tool and is entered the utility model.
As shown in Figure 1, the upper outside that sets plug 1 has the seal groove 17 that is no less than and sealing ring 18 is installed.Sealing ring 18 can make to set and keep sealing between plug 1 outside and expansion tube 2 inwalls.
As shown in Figure 1, the up big and down small guiding conical surface 19 is arranged on the upper inside wall of plug through hole 7.The guiding conical surface 19 is convenient to fishing tool and is entered plug through hole 7.
As shown in Figure 1, the radial indentation 20 that is no less than is arranged at the top of elastic ferrule 3.Radial indentation 20 can increase the elasticity of elastic ferrule 3, is convenient to more install.
As shown in Figure 1, the quantity of radial indentation 20 is three or six and evenly distributes along circumference.Radial indentation 20 is evenly distributed with when being beneficial to the elasticity that improves elastic ferrule 3, still can guarantee its intensity.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The course of work of the utility model most preferred embodiment is: at first, with in the utility model lower going-into-well and install in the expansion tube 2, after dropping into pitching, pitching enters the ball seat inner chamber by the inner chamber of plug through hole 7 and crossover sub 4 and salvaging tail pipe 16, is sitting in taper ball seat face 14; Secondly, suppress, setting plug 1, crossover sub 4, pin 5, salvaging tail pipe 16 and the ball seat 6 that builds the pressure moves down, and elastic ferrule 3 relative expansion pipe 2 under the frictional force effect of self elastic force and latch 11 keeps static, setting domatic 10 struts elastic ferrule 3, latch 11 is clamped on the inwall of expansion tube 2, sets plug 1 and is sitting on the cutting ferrule conical surface by setting domatic 10, thereby make the utility model realize setting; Then, after the expansion end of job, be lowered to fishing tool, set plug 1 by being stuck in to salvage to carry on the step 9, set the domatic 10 cutting ferrule conical surfaces that leave elastic ferrule 3, elastic ferrule 3 automatic resiliences also are positioned at plug axle journal 12 places, set plug 1 releasing and set; At last, carry the utility model in the continuation, pin 5 is cut off in expansion tube 2 lower ends, sets plug 1, crossover sub 4, pin 5, salvages tail pipe 16 and the ball seat 6 that builds the pressure is moving on continuing under the situation of infinite place, finally can will the utility model proposes pit shaft.
Claims (10)
1. can salvage block apparatus at the bottom of the expansion tube bay for one kind, it is characterized in that comprising setting plug, c-shaped and can be clamped on elastic ferrule, crossover sub on the expansion tube inwall, can be stuck in the pin on the expansion tube bottom surface and the ball seat that builds the pressure; There is axial plug through hole the inside that sets plug, on the lower inner wall of plug through hole annular cavity is arranged, form between the upper surface of annular cavity and the plug through-hole wall and salvage step, the outer middle side part that sets plug have up big and down small set domatic, elastic ferrule be sleeved on set domatic on, be distributed with latch on the lateral surface of elastic ferrule, the bottom that sets plug is installed with crossover sub, the crossover sub outside is installed with and is no less than one pin, the bottom of crossover sub is installed with the ball seat that builds the pressure, and the ball seat inner chamber that can accept pitching is arranged in the body of the ball seat that builds the pressure.
2. according to claim 1ly salvage block apparatus at the bottom of the expansion tube bay, it is characterized in that the outer lower portion that sets plug has the plug axle journal of external diameter less than the elastic ferrule internal diameter, there is the plug external screw thread in the plug outside that sets of plug axle journal below, screw thread on the joint is arranged at the internal chamber wall top of crossover sub, crossover sub is fixedly mounted on by screw thread on the joint and plug external screw thread and sets the plug bottom, and the up big and down small cutting ferrule conical surface is arranged at the internal chamber wall top of elastic ferrule.
3. according to claim 1 and 2ly salvage block apparatus at the bottom of the expansion tube bay, it is characterized in that building the pressure and the ball seat inner chamber is arranged in the body of ball seat, the ball seat inner chamber comprises ball seat hole, up big and down small taper ball seat face and discharge orifice, the upper end in ball seat hole is positioned on the upper surface of the ball seat that builds the pressure, the upper end of taper ball seat face is connected with the lower end in ball seat hole, the lower end of taper ball seat face is connected with the upper end of discharge orifice, and the lower end of discharge orifice is positioned on the lower surface of the ball seat that builds the pressure.
4. according to claim 1 and 2ly salvage block apparatus at the bottom of the expansion tube bay, it is characterized in that crossover sub and build the pressure being installed with the salvaging tail pipe between the ball seat, the upper outside and the outside, bottom of salvaging tail pipe have last tail pipe external screw thread and following tail pipe external screw thread respectively, screw thread under the joint is arranged at the internal chamber wall bottom of crossover sub, salvages tail pipe top is fixedly mounted on crossover sub by screw thread under last tail pipe external screw thread and the joint bottom; Have ball seat that screw thread is installed on the upper inside wall of ball seat inner chamber, the ball seat that builds the pressure by ball seat screw thread is installed and following tail pipe external screw thread is fixedly mounted on salvaging tail pipe bottom.
5. according to claim 3ly salvage block apparatus at the bottom of the expansion tube bay, it is characterized in that crossover sub and build the pressure being installed with the salvaging tail pipe between the ball seat, the upper outside and the outside, bottom of salvaging tail pipe have last tail pipe external screw thread and following tail pipe external screw thread respectively, screw thread under the joint is arranged at the internal chamber wall bottom of crossover sub, salvages tail pipe top is fixedly mounted on crossover sub by screw thread under last tail pipe external screw thread and the joint bottom; Have ball seat that screw thread is installed on the upper inside wall of ball seat inner chamber, the ball seat that builds the pressure by ball seat screw thread is installed and following tail pipe external screw thread is fixedly mounted on salvaging tail pipe bottom.
6. according to claim 1 and 2ly salvage block apparatus at the bottom of the expansion tube bay, the upper outside that it is characterized in that setting plug has and is no less than one seal groove and sealing ring is installed.
7. according to claim 5ly salvage block apparatus at the bottom of the expansion tube bay, the upper outside that it is characterized in that setting plug has and is no less than one seal groove and sealing ring is installed.
8. according to claim 7ly salvage block apparatus at the bottom of the expansion tube bay, it is characterized in that on the upper inside wall of plug through hole the up big and down small guiding conical surface being arranged.
9. according to claim 8ly salvage block apparatus at the bottom of the expansion tube bay, the top that it is characterized in that elastic ferrule has and is no less than one radial indentation.
10. according to claim 9ly salvage block apparatus at the bottom of the expansion tube bay, the quantity that it is characterized in that radial indentation is three or six and evenly distributes along circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206930035U CN201924856U (en) | 2010-12-31 | 2010-12-31 | Device capable of fishing bottom plugs of expansion pipe launching chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206930035U CN201924856U (en) | 2010-12-31 | 2010-12-31 | Device capable of fishing bottom plugs of expansion pipe launching chambers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201924856U true CN201924856U (en) | 2011-08-10 |
Family
ID=44428714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206930035U Expired - Fee Related CN201924856U (en) | 2010-12-31 | 2010-12-31 | Device capable of fishing bottom plugs of expansion pipe launching chambers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201924856U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979472A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团西部钻探工程有限公司 | Expansion hanger |
| CN103821472A (en) * | 2012-11-16 | 2014-05-28 | 中国石油天然气股份有限公司 | Fishing bottom plug and fishing tool combination for expansion pipe |
| CN104481443A (en) * | 2014-12-08 | 2015-04-01 | 北京盛隆源科技开发有限公司 | Fishable lower seal head device of expansion pipe |
| CN105221083A (en) * | 2015-09-22 | 2016-01-06 | 西南石油大学 | A kind of apparatus and method for reclaiming drill string in accident well |
| CN109869108A (en) * | 2018-10-22 | 2019-06-11 | 中国石油集团渤海钻探工程有限公司 | A kind of broken well expandable casing patching device and its subsidy method |
| CN111677480A (en) * | 2020-06-04 | 2020-09-18 | 大庆油田有限责任公司 | Double-acting control valve for casing patching |
| CN112963127A (en) * | 2021-02-02 | 2021-06-15 | 中国石油天然气股份有限公司 | Oil pipe diverter |
-
2010
- 2010-12-31 CN CN2010206930035U patent/CN201924856U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821472A (en) * | 2012-11-16 | 2014-05-28 | 中国石油天然气股份有限公司 | Fishing bottom plug and fishing tool combination for expansion pipe |
| CN103821472B (en) * | 2012-11-16 | 2016-08-03 | 中国石油天然气股份有限公司 | Expansion tube blocks up and fishing tool with dragging for the end |
| CN102979472A (en) * | 2012-12-06 | 2013-03-20 | 中国石油集团西部钻探工程有限公司 | Expansion hanger |
| CN102979472B (en) * | 2012-12-06 | 2015-06-17 | 中国石油集团西部钻探工程有限公司 | Expansion hanger |
| CN104481443A (en) * | 2014-12-08 | 2015-04-01 | 北京盛隆源科技开发有限公司 | Fishable lower seal head device of expansion pipe |
| CN104481443B (en) * | 2014-12-08 | 2017-08-22 | 北京盛隆源科技开发有限公司 | Salvagable expansion tube low head device |
| CN105221083A (en) * | 2015-09-22 | 2016-01-06 | 西南石油大学 | A kind of apparatus and method for reclaiming drill string in accident well |
| CN109869108A (en) * | 2018-10-22 | 2019-06-11 | 中国石油集团渤海钻探工程有限公司 | A kind of broken well expandable casing patching device and its subsidy method |
| CN111677480A (en) * | 2020-06-04 | 2020-09-18 | 大庆油田有限责任公司 | Double-acting control valve for casing patching |
| CN111677480B (en) * | 2020-06-04 | 2022-11-08 | 大庆油田有限责任公司 | Double-acting control valve for casing patching |
| CN112963127A (en) * | 2021-02-02 | 2021-06-15 | 中国石油天然气股份有限公司 | Oil pipe diverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20161231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |