CN202338261U - Repeated oil pipe plug - Google Patents
Repeated oil pipe plug Download PDFInfo
- Publication number
- CN202338261U CN202338261U CN2011203945230U CN201120394523U CN202338261U CN 202338261 U CN202338261 U CN 202338261U CN 2011203945230 U CN2011203945230 U CN 2011203945230U CN 201120394523 U CN201120394523 U CN 201120394523U CN 202338261 U CN202338261 U CN 202338261U
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- China
- Prior art keywords
- core bar
- connector
- wall
- core
- lock dog
- 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 - Fee Related
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- 210000002445 nipple Anatomy 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
A repeated oil pipe plug is applied to oil pipe plugging of oil-water wells under-pressure operation in oil fields. Comprises a working barrel and a plugging core. An annular anti-top working groove is formed in the inner wall of the working barrel and is polished; structure of the plug core: the top of the core rod is provided with a fishing head, the lower part of the core rod is provided with a central hole, and the outer part of the lower end of the core rod is provided with four sealing rubber rings; the upper end of the outer wall of the core rod is provided with an outer sleeve; the upper end of the wall of the outer sleeve is provided with a radial hole, the lower end of the outer sleeve is in threaded connection with the connecting body, and a shear pin is fixed in the shear pin threaded hole of the connecting body; an outer cylinder is sleeved outside the connecting body, and a spring and a locking block are fixed in a spring hole and a locking block hole of the outer cylinder; the rubber ring is arranged on the cylindrical surface at the lower part of the connecting body; the lower joint is connected with the external thread of the connecting body. The effect is as follows: connecting a working barrel on the water injection pipe column to go into the well; and delivering the plugging core by using a steel wire. The oil pipe can be opened and closed repeatedly, the pressure bearing difference is 20MPa, and the oil pipe can resist 120 ℃.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, and particularly a kind of oil water well working with pressure oil pipe calker is a kind of repetition tubing plug.
Background technology
In order to keep the energy of oilfield reservoir, increase the production timeliness of oil-water well, effectively avoid environment pollution, reduce the operation integrated cost, the measure oil-water well is carried out Operating Pressure.External Operating Pressure development early, on the experience with operation technique on more perfect than China.External oil gas water well oil pipe bottom mostly is equipped with circulating valve.Therefore, need not carry out before the operation stopping up in the oil pipe, as long as after bottom valve cuts out, can carry out operation.At present, domestic Operating Pressure process technology key technology need be carried out effective shutoff to oil pipe exactly.Domestic oil pipe choked technique one commonly used is the tubing plug that adopts sucker rod to carry, the 2nd, and the tubing plug that adopts the waterpower throttling to set.Tubing plug in work progress, exist stop up weak effect, blocking position is inaccurate, can not repeat to realize the problems such as switch of oil pipe.
The utility model content
The purpose of the utility model is: a kind of repetition tubing plug is provided, on the water injection well completion tubular column, connects seating nipple, be lowered to the obstruction core through steel wire, can realize the switch of repetition oil pipe, carry out Operating Pressure, make the oil field Operating Pressure move towards benign cycle.
The technical scheme that the utility model adopts is: repeat tubing plug; Comprise seating nipple 12 and stop up core, it is characterized in that: seating nipple 12 has the oil pipe internal thread for cylindric in the upper end of seating nipple 12; There is oil tube external thread lower end at seating nipple 12; Top work nest on annular the preventing is being arranged on the inwall of seating nipple 12, and inwall adopts anticorrosion and polishing, difficult generation fouling and corrosion; Be connected on the tubing string in advance seating nipple 12 and G.I.H, when needs are implemented to stop up construction, be lowered to the obstruction core.Described obstruction core mainly is made up of core bar 1, overcoat 2, screw 3, connector 4, shear pin 5, spring 6, lock dog 7, urceolus 8, cushion rubber 9, baffle ring 10 and lower contact 11, and fishing head is arranged at the top of core bar 1.Can be connected with special-purpose pulling and running tool, through the steel wire G.I.H; Centre bore is arranged at the bottom of core bar 1, and the upper end of core bar 1 is a solid hopkinson bar, and there are four road O-ring seals the outside, lower end of core bar 1; Radial hole is arranged at core bar 1 bottom, and radial hole is communicated with centre bore, and there is radial hole at the middle part of core bar 1, and the middle part outer wall of core bar 1 has shear pin groove and lock dog accumulator tank; There is overcoat 2 outer wall upper end at core bar 1; Between overcoat 2 inwalls and core bar 1 outer wall annular space is arranged; On the outer wall of core bar 1, be fixed with screw 3; In the annular space of the position its external sleeve 2 of screw 3 and screw 3 exceed the outer wall of core bar 1, overcoat 2 can slide on the outer wall of core bar 1, screw 3 plays position-limiting action; There is radial hole the wall upper end of its external sleeve 2; There is internal thread the lower end of its external sleeve 2, and overcoat 2 lower ends are threaded with connector 4, and connector 4 is fixed on the shear pin groove of core bar 1 through shear pin 5; External screw thread is arranged at connector 4 tops; The shear pin screwed hole is arranged at connector 4 tops, is fixed with shear pin 5 in the shear pin screwed hole on connector 4 tops, and the inner of shear pin 5 is in core bar 1 wall; There is the lock dog hole of two symmetries connector 4 middle and lower parts, and the face of cylinder and the external screw thread that cushion rubber is installed arranged at connector 4 bottoms; Be with urceolus 8 in the outside of connector 4, urceolus 8 outer walls have spring eye and lock dog hole; The spring 6 of presser type is installed with screw on the outer wall of connector 4; The position of lock dog 7 is in the lock dog groove of connector 4 bottoms; The spring 6 of presser type is fixed in the spring eye and lock dog hole of urceolus 8 with lock dog 7 simultaneously; The spring 6 of presser type is connected with lock dog 7 usefulness screws, and spring 6 plays reset response.
Cushion rubber 9 is installed on the face of cylinder of connector 4 bottoms, is fixed on the connector 4 through baffle ring 10 and lower contact 11; Lower contact 11 tops have internal thread to link to each other with the external screw thread of connector 4 bottoms, on lower contact 11 middle wall inlet opening are arranged, and stop up the core inlet opening at lower contact 11 middle parts in the process of going into the well and are communicated with centre bore, radial hole on the core bar 1, have guaranteed internal and external pressure balance; After the obstruction core arrives and presets seating nipple 12; Core bar 1 is descending; The inlet opening at rubber sealing lower contact 11 middle parts of core bar 1 bottom, cushion rubber 9 is sealed in the launch-work annular seal space that presets seating nipple 12 simultaneously, and lock dog 7 is strapped in the anti-of seating nipple 12 by core bar 1 and goes up in the work nest of top.
The course of work of summary repetition tubing plug helps to understand the utility model.Consult Fig. 2.
Carry out the tubing string assembly on ground, be successively: rope socket, weighted lever, bumper jar, fisher repeats tubing plug.Fisher links to each other with the repetition tubing plug, behind the good tubing string of ground assembly, arrives the precalculated position to tubing string down through steel wire; Repeat tubing plug this moment and arrive and to preset seating nipple 12 and be in sealing state, lock dog 7 just is in the anti-inverted draw cut of seating nipple 12, following jarring; Make that salvaging core bar 1 moves down; Close balanced controls, lock dog 7 has interior constraint not regain, and repeat tubing plug and be in the pressure-bearing duty this moment.Descend jarring once more, the inner shear pin of fisher is cut off, and fisher breaks away from the repetition tubing plug, trips out the residue tubing string then.
This moment, lock dog 7 just was in the anti-inverted draw cut of seating nipple 12, following jarring, and the disconnected shear pin 5 of shake, core bar 1 is descending, makes lock dog 7 break away from the lock dog accumulator tank of core bar 1, and lock dog 7 repeats tubing plug and is in artesian condition because there is interior constraint not regain.Cushion rubber 9 forms sealing with the polishing inwall of seating nipple 12, has guaranteed sealing effectiveness.
When repeating tubing plug and not being in artesian condition, the inlet opening at lower contact 11 middle parts and the centre bore on the core bar 1, radial hole are together with, balanced controls open mode; When the repetition tubing plug was in artesian condition, the inlet opening at rubber sealing lower contact 11 middle parts at core bar 1 place was closed balanced controls.
After fisher drags for core bar 1, on carry core bar 1, move on the core bar 1; Lock dog 7 gets in the lock dog accumulator tank of core bar 1, and constraint was not reclaimed in lock dog 7 had, and breaks away from seating nipple 12; Simultaneously the inlet opening at lower contact 11 middle parts and the centre bore on the core bar 1, radial hole are together with, balanced controls open mode; Carry core bar 1 in the continuation, screw 3 drives overcoat 2 and also moves up, thereby trips out the repetition tubing plug smoothly.
The beneficial effect of the utility model: the utility model repeats tubing plug, on the water injection well completion tubular column, connects the seating nipple G.I.H; Utilize steel wire to deliver the obstruction core, utilize and preset the shutoff of seating nipple realization repetition tubing plug seat card, realize shutoff in the oil pipe.Can realize the switch of repetition oil pipe, pressure-bearing difference 20MPa, 120 ℃ of heatproofs.
Description of drawings
Fig. 1 is that the utility model repeats tubing plug structural profile sketch map.
Fig. 2 is the structural profile sketch map of seating nipple 12.
Among the figure, the 1-core bar; The 2-overcoat; The 3-screw; The 4-connector; The 5-shear pin; The 6-spring; The 7-lock dog; The 8-urceolus; The 9-cushion rubber; The 10-baffle ring; The 11-lower contact; The 12-seating nipple.
The specific embodiment
Embodiment 1: with a repetition tubing plug is example, and the utility model is done further explain.Repeat tubing plug, comprise seating nipple 12 and stop up core.
Consult Fig. 2.Seating nipple 12 is cylindric, in the upper end of seating nipple 12 the oil pipe internal thread is arranged, and in the lower end of seating nipple 12 oil tube external thread is arranged, and top work nest on annular the preventing is being arranged on the inwall of seating nipple 12, and inwall adopts anticorrosion and polishing.Seating nipple external diameter 89mm, length 440mm, the anti-top work groove width 23mm that goes up, internal diameter 58mm, pulling annular seal space 51mm, the end, is shoulder 48mm only.
Consult Fig. 1.Described obstruction core mainly is made up of core bar 1, overcoat 2, screw 3, connector 4, shear pin 5, spring 6, lock dog 7, urceolus 8, cushion rubber 9, baffle ring 10 and lower contact 11.Stop up core external diameter 51mm, length 362mm; Lock dog back in bond maximum outside diameter 56mm.
Fishing head is arranged at the top of core bar 1.Through the steel wire G.I.H; Centre bore is arranged at the bottom of core bar 1, and the upper end of core bar 1 is a solid hopkinson bar, and there are four road O-ring seals the outside, lower end of core bar 1; A radial hole is arranged at core bar 1 bottom, and radial hole is communicated with centre bore, and there is radial hole at the middle part of core bar 1, and the middle part outer wall of core bar 1 has shear pin groove and lock dog accumulator tank; There is overcoat 2 outer wall upper end at core bar 1; Between overcoat 2 inwalls and core bar 1 outer wall annular space is arranged; On the outer wall of core bar 1, be fixed with four screws 3; In the annular space of the position its external sleeve 2 of screw 3 and screw 3 exceed the outer wall of core bar 1, overcoat 2 can slide on the outer wall of core bar 1, screw 3 plays position-limiting action; There is the radial hole of a 8mm wall upper end of its external sleeve 2; There is internal thread the lower end of its external sleeve 2, and overcoat 2 lower ends are threaded with connector 4, and connector 4 is fixed on the shear pin groove of core bar 1 through shear pin 5; External screw thread is arranged at connector 4 tops; The shear pin screwed hole is arranged at connector 4 tops, is fixed with the shear pin 5 of three M6 in the shear pin screwed hole on connector 4 tops, and the inner of shear pin 5 is in core bar 1 wall; There is the lock dog hole of two symmetries connector 4 middle and lower parts, and the face of cylinder and the external screw thread that cushion rubber is installed arranged at connector 4 bottoms; Be with urceolus 8 in the outside of connector 4, urceolus 8 outer walls have spring eye and lock dog hole; The spring 6 of presser type is installed with screw on the outer wall of connector 4; The position of lock dog 7 is in the lock dog groove of connector 4 bottoms; The spring 6 of presser type is fixed in the spring eye and lock dog hole of urceolus 8 with lock dog 7 simultaneously; The spring 6 of presser type is connected with lock dog 7 usefulness screws, and spring 6 plays reset response.
Cushion rubber 9 is installed on the face of cylinder of connector 4 bottoms, is fixed on the connector 4 through baffle ring 10 and lower contact 11.Lower contact 11 tops have internal thread to link to each other with the external screw thread of connector 4 bottoms, on lower contact 11 middle wall inlet opening are arranged, and stop up the core inlet opening at lower contact 11 middle parts in the process of going into the well and are communicated with centre bore, radial hole on the core bar 1, have guaranteed internal and external pressure balance; After the obstruction core arrives and presets seating nipple 12; Core bar 1 is descending; The inlet opening at rubber sealing lower contact 11 middle parts of core bar 1 bottom, cushion rubber 9 is sealed in the launch-work annular seal space that presets seating nipple 12 simultaneously, and lock dog 7 is strapped in the anti-of seating nipple 12 by core bar 1 and goes up in the work nest of top.
Claims (1)
1. repetition tubing plug; Comprise seating nipple (12) and stop up core; It is characterized in that: seating nipple (12) has the oil pipe internal thread for cylindric in the upper end of seating nipple (12), oil tube external thread is arranged in the lower end of seating nipple (12); On the inwall of seating nipple (12), have the anti-of annular to go up the top work nest, and inwall adopt anticorrosion and polishing;
Described obstruction core mainly is made up of core bar (1), overcoat (2), screw (3), connector (4), shear pin (5), spring (6), lock dog (7), urceolus (8), cushion rubber (9), baffle ring (10) and lower contact (11), and fishing head is arranged at the top of core bar (1); Centre bore is arranged at the bottom of core bar (1), and the upper end of core bar (1) is a solid hopkinson bar, and there are four road O-ring seals the outside, lower end of core bar (1); Radial hole is arranged at core bar (1) bottom, and radial hole is communicated with centre bore, and there is radial hole at the middle part of core bar (1), and the middle part outer wall of core bar (1) has shear pin groove and lock dog accumulator tank; There is overcoat (2) outer wall upper end at core bar (1); Between overcoat (2) inwall and core bar (1) outer wall annular space is arranged; On the outer wall of core bar (1), be fixed with screw (3); In the annular space of the position its external sleeve (2) of screw (3) and screw (3) exceed the outer wall of core bar (1), overcoat (2) can slide on the outer wall of core bar (1), screw (3) plays position-limiting action; There is radial hole the wall upper end of its external sleeve (2); There is internal thread the lower end of its external sleeve (2), and overcoat (2) lower end is threaded with connector (4), and connector (4) is fixed on the shear pin groove of core bar (1) through shear pin (5); External screw thread is arranged at connector (4) top; The shear pin screwed hole is arranged at connector (4) top, is fixed with shear pin (5) in the shear pin screwed hole on connector (4) top, and the inner of shear pin (5) is in core bar (1) wall; There is the lock dog hole of two symmetries connector (4) middle and lower part, and the face of cylinder and the external screw thread that cushion rubber is installed arranged at connector (4) bottom; Be with urceolus (8) in the outside of connector (4), urceolus (8) outer wall has spring eye and lock dog hole; The spring (6) of presser type is installed with screw on the outer wall of connector (4); The position of lock dog (7) is in the lock dog groove of connector (4) bottom; In the spring (6) of while presser type and the spring eye and lock dog hole that lock dog (7) is fixed on urceolus (8), the spring of presser type (6) is connected with screw with lock dog (7);
Cushion rubber (9) and is fixed on the connector (4) through baffle ring (10) and lower contact (11) on the face of cylinder of connector (4) bottom; Lower contact (11) top has internal thread to link to each other with the external screw thread of connector (4) bottom, on lower contact (11) middle wall inlet opening is arranged, and stops up the core inlet opening at lower contact (11) middle part in the process of going into the well and is communicated with centre bore, radial hole on the core bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203945230U CN202338261U (en) | 2011-10-17 | 2011-10-17 | Repeated oil pipe plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203945230U CN202338261U (en) | 2011-10-17 | 2011-10-17 | Repeated oil pipe plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338261U true CN202338261U (en) | 2012-07-18 |
Family
ID=46486954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203945230U Expired - Fee Related CN202338261U (en) | 2011-10-17 | 2011-10-17 | Repeated oil pipe plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338261U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817565A (en) * | 2012-08-23 | 2012-12-12 | 天津市广林石油机械有限公司 | Downhole intra-tube support device |
| CN103206187A (en) * | 2013-04-22 | 2013-07-17 | 中国海洋石油总公司 | Blanking plug for sand prevention |
| CN103470208A (en) * | 2013-08-21 | 2013-12-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Recyclable run-in-hole blockage tool for oil and gas field |
| CN105239943A (en) * | 2015-09-02 | 2016-01-13 | 中国海洋石油总公司 | Multifunctional string lifting appliance |
| CN105332670A (en) * | 2015-11-06 | 2016-02-17 | 重庆市正华钻采设备有限公司 | Natural gas well fixed tubing plug |
| CN113047804A (en) * | 2020-12-29 | 2021-06-29 | 新疆华油油气工程有限公司 | Throwing and fishing type double-acting blanking plug |
-
2011
- 2011-10-17 CN CN2011203945230U patent/CN202338261U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817565A (en) * | 2012-08-23 | 2012-12-12 | 天津市广林石油机械有限公司 | Downhole intra-tube support device |
| CN103206187A (en) * | 2013-04-22 | 2013-07-17 | 中国海洋石油总公司 | Blanking plug for sand prevention |
| CN103206187B (en) * | 2013-04-22 | 2015-10-21 | 中国海洋石油总公司 | Sand control blanking plug |
| CN103470208A (en) * | 2013-08-21 | 2013-12-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Recyclable run-in-hole blockage tool for oil and gas field |
| CN105239943A (en) * | 2015-09-02 | 2016-01-13 | 中国海洋石油总公司 | Multifunctional string lifting appliance |
| CN105239943B (en) * | 2015-09-02 | 2017-10-17 | 中海油能源发展股份有限公司 | Multi-functional tubing string lifting device |
| CN105332670A (en) * | 2015-11-06 | 2016-02-17 | 重庆市正华钻采设备有限公司 | Natural gas well fixed tubing plug |
| CN113047804A (en) * | 2020-12-29 | 2021-06-29 | 新疆华油油气工程有限公司 | Throwing and fishing type double-acting blanking plug |
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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: 20120718 Termination date: 20201017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |