CN204716192U - A kind of special squeeze cementing bridge plug - Google Patents

A kind of special squeeze cementing bridge plug Download PDF

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Publication number
CN204716192U
CN204716192U CN201520259145.3U CN201520259145U CN204716192U CN 204716192 U CN204716192 U CN 204716192U CN 201520259145 U CN201520259145 U CN 201520259145U CN 204716192 U CN204716192 U CN 204716192U
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China
Prior art keywords
piston
packing
sealing
throughholes
bridge plug
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Active
Application number
CN201520259145.3U
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Chinese (zh)
Inventor
孟兆贤
李岸然
张彦平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOP-WELL PETROLEUM TECHNOLOGIES Co Ltd
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TOP-WELL PETROLEUM TECHNOLOGIES Co Ltd
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Priority to CN201520259145.3U priority Critical patent/CN204716192U/en
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Publication of CN204716192U publication Critical patent/CN204716192U/en
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Abstract

The utility model discloses a kind of special squeeze cementing bridge plug, it comprises body, body is set with anchor mechanism and packing element sealing mechanism from top to bottom; Below packing element sealing mechanism, tube wall is provided with cement exit; Above cement exit, in the intermediate throughholes of body, be provided with packed-piston mechanism.The utility model structure is simple, easy to use, and can not cause body stuck phenomenon, substantially increases operating efficiency, reduces cost of production.

Description

A kind of special squeeze cementing bridge plug
Technical field
The utility model relates to Oil Field Measure class kit technical field, particularly the special squeeze cementing bridge plug of one.
Background technology
By squeeze method, to scrapping layer or water-yielding stratum, to carry out permanent shutoff be the most frequently used measure.Can both be reached the object of squeeze method shutoff by the mode arranging packer or cement retainer under tubing string, although the former construction of above two kinds of methods simply easily causes, tubing string is stuck causes overhaul; This body structure of the latter's instrument is more complicated, constructs to instruct in professional technique with action need of giving up and carries out.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of special squeeze cementing bridge plug, the releasing tool of common bored bridging plug can be adopted just this bridging plug can be lost and to carry out squeeze method construction in down-hole, its single-acting piston has the function of the out-of-date damage of waterproof slurry flows, and enforced reset sealing under spring force, ensure that cement is after clamp-oning stratum, no longer instead to tell.This tool construction is brief, is conducive to boring mill construction operation.
For achieving the above object, the special squeeze cementing bridge plug of one disclosed in the utility model, it comprises body, body is set with anchor mechanism and packing element sealing mechanism from top to bottom; Below packing element sealing mechanism, tube wall is provided with cement exit; Above cement exit, in the intermediate throughholes of body, be provided with packed-piston mechanism.
Further, described packed-piston mechanism comprises piston and spring; Be provided with sealing contact surface between the intermediate throughholes of piston and described body, under spring action, piston is resisted against on the sealing contact surface in intermediate throughholes.
Further, described sealing contact surface is arrange the taper seat in described piston and intermediate throughholes respectively.
Further, described piston is provided with rubber seal ring on its sealing contact surface.
Further, described packing element sealing mechanism comprises packing element and cone.
Further, described anchor mechanism comprises snap seat, snap and slips.
Further, described special squeeze cementing bridge plug also comprise described body upper end is set break ring.
During use, by this special squeeze cementing bridge plug topmost break ring and the common bridging plug that bores is delivered after instrument connects, with tubing string, instrument is transferred to for after block-up position, adds hydraulic pressure from oil pipe inside, packing element is swollen envelope under the effect of upper and lower extruding force, seals up the annular space between body and sleeve pipe; Meanwhile, cone uses slips distending, is anchored on internal surface of sleeve pipe; Trip out after losing rear tubing string, instrument can be adopted or directly to squeeze method in sleeve pipe; In the process of squeeze method, the upward reaction force that high pressure cement produces, by packing element, cone, reaction force finally passes to slips, because slips has been anchored on internal surface of sleeve pipe, the upper top power that cone produces, makes slips lock tighter and tighter.When cement paste is by piston, descent of piston Compress Spring shrinks, and makes the piston conical surface leave cement exit one segment distance, prevent cement paste from stabbing the conical surface under the effect of upper piston area cylinder.After squeezing off terminates, piston resets under spring force, the piston conical surface and on rubber seal ring and the taper surface close contact of body bottom, seal up cement data feedback channel.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of special squeeze cementing bridge plug in the present embodiment.
In figure: 1-breaks ring; 2-snap seat; 3-snap; 4-slips; 5-cone; 6-packing element; 7-main body; 8-piston; 9-spring; 10-pressure cap; 7.2-cement exit; 8.2-cone seal contact surface; 8.3-rubber seal ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, a kind of special squeeze cementing bridge plug, it comprises body 7, body 7 is set with anchor mechanism and packing element sealing mechanism from top to bottom; Anchor mechanism comprises snap seat 2, snap 3 and slips 4.Packing element sealing mechanism comprises packing element 6 and cone 5.Body 7 upper end is provided with breaks ring 1.
Below packing element sealing mechanism, body 7 sidewall is provided with cement exit 7.2; Above cement exit 7.2, in the intermediate throughholes of body 7, be provided with packed-piston mechanism.Packed-piston mechanism comprises piston 8 and spring 9; Be provided with conical sealing contact surface 8.2 between piston 8 and the intermediate throughholes of body, under spring 9 active force, piston 8 is resisted against on the sealing contact surface 8.2 in intermediate throughholes.Piston 8 is provided with rubber seal ring 8.3 on its sealing contact surface.
The utility model structure is simple, easy to use, and can not cause body stuck phenomenon, substantially increases operating efficiency, reduces cost of production.
Below only describe several preferred embodiments of the application by reference to the accompanying drawings, but the application is not limited thereto, every those of ordinary skill in the art are under the spirit not departing from the application, and any improvement made and/or distortion, all belong to the protection domain of the application.

Claims (7)

1. a special squeeze cementing bridge plug, is characterized in that, it comprises body, body is set with anchor mechanism and packing element sealing mechanism from top to bottom; Below packing element sealing mechanism, tube wall is provided with cement exit; Above cement exit, in the intermediate throughholes of body, be provided with packed-piston mechanism.
2. bridging plug as claimed in claim 1, it is characterized in that, described packed-piston mechanism comprises piston and spring; Be provided with sealing contact surface between the intermediate throughholes of piston and described body, under spring action, piston is resisted against on the sealing contact surface in intermediate throughholes.
3. bridging plug as claimed in claim 2, it is characterized in that, described sealing contact surface is arrange the taper seat in described piston and intermediate throughholes respectively.
4. bridging plug as claimed in claim 2, it is characterized in that, described piston is provided with rubber seal ring on its sealing contact surface.
5. bridging plug as claimed in claim 1, it is characterized in that, described packing element sealing mechanism comprises packing element and cone.
6. bridging plug as claimed in claim 1, it is characterized in that, described anchor mechanism comprises snap seat, snap and slips.
7. bridging plug as claimed in claim 1, is characterized in that, described special squeeze cementing bridge plug also comprise described body upper end is set break ring.
CN201520259145.3U 2015-04-27 2015-04-27 A kind of special squeeze cementing bridge plug Active CN204716192U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520259145.3U CN204716192U (en) 2015-04-27 2015-04-27 A kind of special squeeze cementing bridge plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520259145.3U CN204716192U (en) 2015-04-27 2015-04-27 A kind of special squeeze cementing bridge plug

Publications (1)

Publication Number Publication Date
CN204716192U true CN204716192U (en) 2015-10-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520259145.3U Active CN204716192U (en) 2015-04-27 2015-04-27 A kind of special squeeze cementing bridge plug

Country Status (1)

Country Link
CN (1) CN204716192U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111219163A (en) * 2020-01-08 2020-06-02 王成军 Bridge plug for oil field

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111219163A (en) * 2020-01-08 2020-06-02 王成军 Bridge plug for oil field

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