CN201546665U - Recyclable bridge plug - Google Patents
Recyclable bridge plug Download PDFInfo
- Publication number
- CN201546665U CN201546665U CN2009200948634U CN200920094863U CN201546665U CN 201546665 U CN201546665 U CN 201546665U CN 2009200948634 U CN2009200948634 U CN 2009200948634U CN 200920094863 U CN200920094863 U CN 200920094863U CN 201546665 U CN201546665 U CN 201546665U
- Authority
- CN
- China
- Prior art keywords
- central tube
- shear pin
- recyclable
- cone
- support ring
- 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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Abstract
The utility model discloses a recyclable bridge plug for water plugging in oil fields. A release sub (1), a release shear pin (2) and a fishing head (3) are connected to the upper portion of a central tube (4), a rubber drum (7), a hydraulic cylinder (8), a piston (9), an upper cone (13), a slip (14) and a lower cone (16) are sequentially sleeved to the outer portion of the central tube (4), the lower cone (16) is fixed on the lower portion of the central tube (4) through a locking block (17), and a support ring (6) is fixed inside the central tube (4) through an unsetting shear pin (5). The recyclable bridge plug has simple structure and reliable unsetting, is capable of singularly plugging bottom water, and also can be used with packers of Y341 type in plugging intermediate-layer or upper-layer water.
Description
Technical field
The utility model relates to oil field down-hole oil production technical field of tools, relates in particular to the recyclable bridging plug that a kind of water blockoff is used.
Background technology
At present, be used for the recyclable bridging plug complex structure that water blockoff is used, the machining accuracy requirement is high, the assembling difficulty is big; Under the influence of factors such as downhole corrosion fouling, during deblocking,, can bring certain degree of difficulty to fishing process if rust is dead between the part of relative motion deblocking, cause down-hole accidents such as overhaul easily.
Summary of the invention
The purpose of this utility model is in order to solve the shortcoming that above-mentioned existing recyclable bridging plug exists, and a kind of recyclable bridging plug that can overcome above-mentioned shortcoming is provided.
The working fluid cylinder that the recyclable bridging plug of the utility model sets is between packing element and slips, and lower cone is fixed on the central tube by support ring by lock dog, and support ring is fixed on the central tube by shear pin.
The beneficial effects of the utility model are:
Simple in structure, sealing with salvage reliable, but use shutoff bottom layer position separately, also can with Y341 class packer supporting use, shutoff middle level or upper layer position.Be that available special-purpose fishing tool is salvaged, also available common salvaging anchor is salvaged.
The course of work of the present utility model and principle:
Recyclable bridging plug sets: the central tube pressurization, hydraulic pressure enters the hydraulic cavities of fluid cylinder and piston composition by the inlet opening on support ring and the central tube, under the effect of hydraulic coupling, upwards the compression packer packing element sets, push upper cone downwards, because lower cone is fixed on the central tube, under the acting in conjunction of last lower cone power, the slips anchor is on internal surface of sleeve pipe; Be provided with snap between fluid cylinder and the piston, under the effect of snap, kept the compressive state of packing element and the grappling state of slips.
Recyclable bridging plug is given up: when recyclable bridging plug set finish after, this moment slips anchor on internal surface of sleeve pipe; When central tube pressure continue to strengthen, carry the center tubing string on simultaneously, under the acting in conjunction of hydraulic coupling and upper lifting force, the shear pin of giving up is cut off, the release of giving up of recyclable bridging plug.
Salvage: be lowered to fisher, the fisher design has the sand washing water hole, fishing string is transferred on sand washing limit, limit, when fisher is descending when breaking the deblocking shear pin of control support ring position, support ring is descending, lock dog loses and supports and the interior mobile trend of oriented central tube, this moment, fisher was salvaged fishing head, on when carrying fishing tool, lock dog is moved in the central tube in the effect of combining ability, and it is descending that lower cone loses the location, because fluid cylinder, upper cone, slip sleeve, slips, the lower cone suit links together, so when lower cone is descending, fluid cylinder, upper cone, slip sleeve, slips is simultaneously descending, reclaims under the plate spring sheet effect, and slips is grappling no longer, the packing element deblocking, recyclable bridging plug is salvaged.
Part described in the utility model, what have is the assembly of a plurality of parts, can be one or morely as packing element, middlely separates with spacer ring; Slips can be various ways, has done maximum simplification in this narration under the situation that does not influence its structure and principle, is beneficial to the description of patent, and the professional can design this recyclable bridging plug according to above-mentioned description fully.
Description of drawings,
Fig. 1 is the cross-sectional schematic of the utility model embodiment.
The 1-back-off sub; The 2-shear pin of giving up; The 3-fishing head; The 4-central tube; 5-deblocking shear pin; The 6-support ring; The 7-packing element; The 8-fluid cylinder; The 9-piston; The 10-snap; The 11-shear pin of breaking seal; The 12-slip sleeve; The 13-upper cone; The 14-slips; The 15-leaf spring; The 16-lower cone; The 17-lock dog; The 18-lower contact.
The specific embodiment
Embodiment one: be used for water form of the stifled end.See also shown in Figure 1ly, present embodiment mainly is made of back-off sub (1), the shear pin of giving up (2), fishing head (3), central tube (4), deblocking shear pin (5), support ring (6), packing element (7), fluid cylinder (8), piston (9), snap (10), unpacking shear pin (11), slip sleeve (12), upper cone (13), slips (14), leaf spring (15), lower cone (16), lock dog (17), lower contact (18); Back-off sub (1) is connected in fishing head (3) by the shear pin of giving up (2) and goes up and insert central tube (4) top formation seal, and packing element (7), fluid cylinder (8), piston (9), upper cone (13), slips (14), lower cone (16) from top to bottom are set in central tube (4) outside successively; Lower cone (16) is fixed on the central tube (4) by lock dog (17) and support ring (6), and support ring (6) is fixed in central tube (4) inside by deblocking shear pin (5); On piston (9), designed snap (10).Described lower cone (16) can be slip spider.
Embodiment two: following connection Y341 packer is used for shutoff middle level or upper strata.
See also shown in Figure 2ly, this embodiment and Fig. 1 difference are: support ring (6) all is designed to hollow-core construction with lower contact (18), is used for drain.
Embodiment three: adopt the back-off sub of other form to be connected in central tube (4) top, can reach the purpose of the shutoff of giving up equally.
Claims (2)
1. recyclable bridging plug, be by back-off sub (1), the shear pin (2) of giving up, fishing head (3), central tube (4), deblocking shear pin (5), support ring (6), packing element (7), fluid cylinder (8), piston (9), snap (10), unpacking shear pin (11), slip sleeve (12), upper cone (13), slips (14), leaf spring (15), lower cone (16), lock dog (17) and lower contact (18) constitute, and it is characterized in that: packing element (7), fluid cylinder (8), piston (9), upper cone (13), slips (14) and lower cone (16) from top to bottom are set in central tube (4) outside successively; Lower cone (16) is fixed on the central tube (4) by lock dog (17) and support ring (6), and support ring (6) is fixed in central tube (4) inside by deblocking shear pin (5).
2. a kind of recyclable bridging plug according to claim 1 is characterized in that: described lower cone (16) is a slip spider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200948634U CN201546665U (en) | 2009-12-02 | 2009-12-02 | Recyclable bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200948634U CN201546665U (en) | 2009-12-02 | 2009-12-02 | Recyclable bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546665U true CN201546665U (en) | 2010-08-11 |
Family
ID=42601839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200948634U Expired - Fee Related CN201546665U (en) | 2009-12-02 | 2009-12-02 | Recyclable bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201546665U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266865A (en) * | 2013-05-21 | 2013-08-28 | 上海大学 | Large-drift-diameter packer used for oil well |
| CN103410478A (en) * | 2013-08-07 | 2013-11-27 | 中国石油化工股份有限公司 | Hollow oil pumping device for fluid producing profile tests |
| CN110778288A (en) * | 2019-11-28 | 2020-02-11 | 中国石油集团川庆钻探工程有限公司 | Integrated downhole operation tool based on bidirectional slip recoverable hydraulic packer |
-
2009
- 2009-12-02 CN CN2009200948634U patent/CN201546665U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266865A (en) * | 2013-05-21 | 2013-08-28 | 上海大学 | Large-drift-diameter packer used for oil well |
| CN103410478A (en) * | 2013-08-07 | 2013-11-27 | 中国石油化工股份有限公司 | Hollow oil pumping device for fluid producing profile tests |
| CN103410478B (en) * | 2013-08-07 | 2015-12-09 | 中国石油化工股份有限公司 | The hollow oil rig of a kind of producing profile testing |
| CN110778288A (en) * | 2019-11-28 | 2020-02-11 | 中国石油集团川庆钻探工程有限公司 | Integrated downhole operation tool based on bidirectional slip recoverable hydraulic packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20121202 |