CN104265216A - Throwing-fishing-free pressure switch capable of washing well - Google Patents
Throwing-fishing-free pressure switch capable of washing well Download PDFInfo
- Publication number
- CN104265216A CN104265216A CN201410401760.3A CN201410401760A CN104265216A CN 104265216 A CN104265216 A CN 104265216A CN 201410401760 A CN201410401760 A CN 201410401760A CN 104265216 A CN104265216 A CN 104265216A
- Authority
- CN
- China
- Prior art keywords
- main body
- spool
- top connection
- boss
- well
- 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.)
- Pending
Links
- 238000005406 washing Methods 0.000 title claims abstract description 13
- 238000005266 casting Methods 0.000 claims description 11
- 239000003921 oil Substances 0.000 abstract description 22
- 239000010779 crude oil Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 210000000078 claw Anatomy 0.000 abstract 4
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Landscapes
- 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)
- Multiple-Way Valves (AREA)
Abstract
A throwing and fishing-free pressure switch capable of washing a well. Mainly solves the problem that crude oil in a shaft enters an oil pipe. The method is characterized in that: the upper joint (7), the upper main body (6), the middle main body (5), the outer cylinder (4), the lower main body (3) and the lower joint (2) are sequentially connected, the upper joint (7) and the upper main body (6) are provided with a valve ball seat and a valve ball correspondingly, a claw block frame (8) is fixed below the upper joint (7), 3 claw blocks (9) are connected on the claw block frame (8), torsion springs are arranged on claw blocks, the valve core (1) is axially arranged in the lower main body (3), a lower boss of the valve core (1) is matched with an inner boss of the lower main body (3), a pressure regulating sheet (10) is arranged in the lower end outer cylinder (4) of the middle main body (5), a sealing boss of the valve core (1) is sleeved with a mesh plate (11), a large spring is arranged between the mesh plate (11) and the pressure regulating sheet (10), and a small spring is arranged between the boss of the valve. The throwing-fishing-free washable well pressure switch prevents crude oil in a shaft from entering an oil pipe.
Description
Technical field
The present invention relates to the downhole tool that field of oil field oil extraction is used, especially casting and dragging free washing well pressure switch.
Background technology
In field of oil field oil extraction, the ball seat of at present application only has check action, and when working string is gone into the well and water injection well stops noting or interlayer contradiction is large, ball seat cannot stop that crude oil enters in oil pipe by this position; And Anti-over flow uniform valves also only can avoid tubing string in-place oil in process of going into the well to enter in oil pipe, two kinds of instruments all cannot avoid the dead wax of dead oil to enter in oil pipe, cause normal dropping-fishing test difficulty, success rate low.
Summary of the invention
Enter oil pipe in order to solve crude oil in pit shaft by ball seat position, lowering apparatus is gone into the well success rate and zonal testing efficiency, increases the difficulty of pulling after Operating Pressure simultaneously, and making after part reprovision well operations cannot the problem of pulling.The invention provides a kind of casting and dragging free washing well pressure switch, this casting and dragging free washing well pressure switch avoids crude oil in pit shaft to enter oil pipe by ball seat position, improve instrument to go into the well success rate and zonal testing efficiency, reduce the difficulty of pulling after Operating Pressure simultaneously, after avoiding part reprovision well operations, pulling cannot affect the phenomenon of water filling.
Technical scheme of the present invention is: this casting and dragging free washing well pressure switch comprises top connection, upper main body, middle main body, urceolus, lower main body, lower contact and spool.Top connection, upper main body, middle main body, urceolus, lower main body, lower contact is connected successively, top connection end face corresponding to upper main body has valve ball seat, top connection and upper main body corresponding cavity are built-in with valve ball, top connection lower end is fixedly connected with rest shoe frame, rest shoe frame upper hinge is connected with 3 rest shoes, rest shoe axle is equipped with torsion spring, poppet shaft is to being placed in lower main body, spool lower seal boss matches with lower main body inner convex platform, pressure regulation sheet is connected with in middle main body lower end urceolus, on the seal boss of spool, cover has web plate, web plate is placed in lower main body upper end, big spring is equipped with between web plate and pressure regulation sheet, lower main body lower end is built-in with leading truck, little spring is equipped with between boss and leading truck in the middle part of spool.
The present invention has following beneficial effect: this casting and dragging free washing well pressure switch is first owing to adopting top connection, upper main body, middle main body, urceolus, lower main body, lower contact is connected successively, top connection end face corresponding to upper main body has valve ball seat, top connection and upper main body corresponding cavity are built-in with valve ball, top connection lower end is fixedly connected with rest shoe frame, rest shoe frame upper hinge is connected with 3 rest shoes, rest shoe axle is equipped with torsion spring, poppet shaft is to being placed in lower main body, spool lower seal boss matches with lower main body inner convex platform, pressure regulation sheet is connected with in middle main body lower end urceolus, on the seal boss of spool, cover has web plate, web plate is placed in lower main body upper end, big spring is equipped with between web plate and pressure regulation sheet, lower main body lower end is built-in with leading truck, the structure of little spring is equipped with between boss and leading truck in the middle part of spool.Valve ball is utilized to coordinate with upper and lower valve ball seat, close or open passage, and then the casting and dragging free washing well pressure switch crude oil that can effectively prevent from well from returning telling returns to tell by ball seat position and enters oil pipe, improve instrument to go into the well success rate and zonal testing efficiency, the difficulty of pulling after reduction Operating Pressure simultaneously, reduce reprovision operation probability, reduce well-flushing workload.This casting and dragging free washing well pressure switch avoids crude oil in pit shaft to enter oil pipe by ball seat position thus, improve instrument to go into the well success rate and zonal testing efficiency, reduce the difficulty of pulling after Operating Pressure simultaneously, after avoiding part reprovision well operations, pulling cannot affect the phenomenon of water filling.
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present invention.
1-spool in figure, 2-lower contact, main body under 3-, 4-urceolus, main body in 5-, the upper main body of 6-, 7-top connection, 8-rest shoe frame, 9-rest shoe, 10-pressure regulation sheet, 11-web plate, 12-leading truck.
detailed description of the invention:
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, this casting and dragging free washing well pressure switch comprises top connection 7, upper main body 6, middle main body 5, urceolus 4, lower main body 3, lower contact 2 and spool 1.Top connection 7, upper main body 6, middle main body 5, urceolus 4, lower main body 3, lower contact 2 is connected successively, top connection 7 has valve ball seat with the corresponding end face of upper main body 6, valve ball seat there is the sphere matched with valve ball, top connection 7 and upper main body 6 corresponding cavity are built-in with valve ball, top connection 7 lower end is fixedly connected with rest shoe frame 8, rest shoe frame 8 upper hinge is connected with 3 rest shoes 9, rest shoe axle is equipped with torsion spring, rest shoe 9 can upwards overturn under the effect of torsion spring, hold valve ball closing passage, go into the well in process at tubing string, well liquid does not enter in oil pipe, thus it is clean without dead oil in guarantee tubing string, so that later water nozzle pulling and test job smooth.Spool 1 is axially placed in lower main body 3, and spool 1 is tubulose, and spool 1 bottom outer lug boss matches with upper main body 3 inner convex platform, spool 1 lower boss has annular dovetail slot, has the packing matched in groove, iron core material, can ensure that repeatedly suppressing structure is not destroyed.Spool 1 lower seal boss matches with lower main body 3 inner convex platform, pressure regulation sheet 10 has been threaded connection in middle main body 5 lower end urceolus 4, pressure regulation sheet 10 is utilized to regulate big spring pressure, on the seal boss of spool 1, cover has web plate 11, web plate 11 axially there are more than 2 through holes, web plate 11 is placed in lower main body 3 upper end, big spring is equipped with between web plate 11 and pressure regulation sheet 10, lower main body 3 lower end is built-in with leading truck 12, leading truck 12 axially there are more than 2 through holes, in the middle part of spool 1, between boss and leading truck 12, are equipped with little spring.
Actual use procedure: when spool 1 is ineffective, controlled by valve ball.By this casting and dragging free washing well pressure switch under first dress state, valve ball is in the top of rest shoe 9, under the effect of torsion spring, rest shoe 9 upwards overlays valve ball in the central passage of lower main body 6 valve ball seat, passage is blocked, and make it to go into the well in process at tubing string, well liquid does not enter in oil pipe, thus clean without dead oil in guarantee tubing string so that later water nozzle pulling and test job smooth.And when suppressing set packer after complete under tubing string in oil pipe, valve ball can squeeze rest shoe and fall in the valve ball seat of main body 6 under hydraulic pressure, blocks the valve ball seat centre bore of main body 6, can realize building the pressure in oil pipe.After this when anti-flushing well, because there being the obstruct of rest shoe 9, valve ball can not return to the liquid-through hole road blocking main body again, thus can realize anti-flushing well to conventional ball is the same with seat.Stop in note process, because interlayer contradiction is generally less than 3MPa, torsion spring Stability Analysis of Structures, well liquid cannot enter.During anti-flushing well, when well-flushing pressure is more than 3MPa, overcome torsion spring pressure, pour out well-flushing passage, complete well-flushing.Two kinds of respective outer side edges use, and can not only ensure that crude oil does not enter oil pipe, simultaneously retaining tool stability.
Claims (1)
1. a casting and dragging free washing well pressure switch, comprise top connection (7), upper main body (6), middle main body (5), urceolus (4), lower main body (3), lower contact (2) and spool (1), it is characterized in that: top connection (7), upper main body (6), middle main body (5), urceolus (4), lower main body (3), lower contact (2) is connected successively, top connection (7) has valve ball seat with upper main body (6) corresponding end face, top connection (7) and upper main body (6) corresponding cavity are built-in with valve ball, top connection (7) lower end is fixedly connected with rest shoe frame (8), rest shoe frame (8) upper hinge is connected with 3 rest shoes (9), rest shoe axle is equipped with torsion spring, spool (1) is axially placed in lower main body (3), spool (1) lower seal boss matches with lower main body (3) inner convex platform, pressure regulation sheet (10) is connected with in middle main body (5) lower end urceolus (4), on the seal boss of spool (1), cover has web plate (11), web plate (11) is placed in lower main body (3) upper end, big spring is equipped with between web plate (11) and pressure regulation sheet (10), lower main body (3) lower end is built-in with leading truck (12), little spring is equipped with between spool (1) middle part boss and leading truck (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410401760.3A CN104265216A (en) | 2014-08-15 | 2014-08-15 | Throwing-fishing-free pressure switch capable of washing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410401760.3A CN104265216A (en) | 2014-08-15 | 2014-08-15 | Throwing-fishing-free pressure switch capable of washing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265216A true CN104265216A (en) | 2015-01-07 |
Family
ID=52156774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410401760.3A Pending CN104265216A (en) | 2014-08-15 | 2014-08-15 | Throwing-fishing-free pressure switch capable of washing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265216A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894775A (en) * | 2017-02-27 | 2017-06-27 | 中国石油大学(北京) | Well washing apparatus are segmented with boring and with the drilling rig for boring segmentation well washing apparatus |
| CN108119077A (en) * | 2016-11-29 | 2018-06-05 | 中国石油天然气股份有限公司 | Well washing valve for under-pressure operation |
| CN109469450A (en) * | 2017-09-07 | 2019-03-15 | 中国石油化工股份有限公司 | Sucker rod control selective oil extraction device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254836A (en) * | 1978-04-10 | 1981-03-10 | Russell Larry R | Methods and apparatus for controlling fluid flow |
| CN201513156U (en) * | 2009-08-28 | 2010-06-23 | 中国石油化工股份有限公司 | Unidirectional switch at bottom of oil pipe |
| CN201786295U (en) * | 2010-07-30 | 2011-04-06 | 辽宁江城石油技术服务有限公司 | Pressure regulating well washing machine |
| CN202645507U (en) * | 2012-07-18 | 2013-01-02 | 中国石油天然气股份有限公司 | Intelligent pumping unit down-hole pressure switch |
| CN203640688U (en) * | 2013-12-31 | 2014-06-11 | 大庆红祥寓科技有限公司 | Bailing-free pressure switch capable of achieving well flushing |
| CN103939052A (en) * | 2014-05-28 | 2014-07-23 | 西南石油大学 | Hydraulic type non-well-killing downhole switch |
| CN103953313A (en) * | 2014-05-14 | 2014-07-30 | 中国石油集团渤海钻探工程有限公司 | Erosion-resistant check valve |
-
2014
- 2014-08-15 CN CN201410401760.3A patent/CN104265216A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254836A (en) * | 1978-04-10 | 1981-03-10 | Russell Larry R | Methods and apparatus for controlling fluid flow |
| CN201513156U (en) * | 2009-08-28 | 2010-06-23 | 中国石油化工股份有限公司 | Unidirectional switch at bottom of oil pipe |
| CN201786295U (en) * | 2010-07-30 | 2011-04-06 | 辽宁江城石油技术服务有限公司 | Pressure regulating well washing machine |
| CN202645507U (en) * | 2012-07-18 | 2013-01-02 | 中国石油天然气股份有限公司 | Intelligent pumping unit down-hole pressure switch |
| CN203640688U (en) * | 2013-12-31 | 2014-06-11 | 大庆红祥寓科技有限公司 | Bailing-free pressure switch capable of achieving well flushing |
| CN103953313A (en) * | 2014-05-14 | 2014-07-30 | 中国石油集团渤海钻探工程有限公司 | Erosion-resistant check valve |
| CN103939052A (en) * | 2014-05-28 | 2014-07-23 | 西南石油大学 | Hydraulic type non-well-killing downhole switch |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119077A (en) * | 2016-11-29 | 2018-06-05 | 中国石油天然气股份有限公司 | Well washing valve for under-pressure operation |
| CN108119077B (en) * | 2016-11-29 | 2020-05-08 | 中国石油天然气股份有限公司 | Well washing valve for under-pressure operation |
| CN106894775A (en) * | 2017-02-27 | 2017-06-27 | 中国石油大学(北京) | Well washing apparatus are segmented with boring and with the drilling rig for boring segmentation well washing apparatus |
| CN106894775B (en) * | 2017-02-27 | 2018-07-13 | 中国石油大学(北京) | It is segmented well washing apparatus and with the drilling rig for boring segmentation well washing apparatus with boring |
| CN109469450A (en) * | 2017-09-07 | 2019-03-15 | 中国石油化工股份有限公司 | Sucker rod control selective oil extraction device and method |
| CN109469450B (en) * | 2017-09-07 | 2022-05-13 | 中国石油化工股份有限公司 | Sucker rod control selective oil extraction device and method |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |