CN103590783B - A kind of open hole well easily bores bridging plug - Google Patents
A kind of open hole well easily bores bridging plug Download PDFInfo
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- CN103590783B CN103590783B CN201210289207.6A CN201210289207A CN103590783B CN 103590783 B CN103590783 B CN 103590783B CN 201210289207 A CN201210289207 A CN 201210289207A CN 103590783 B CN103590783 B CN 103590783B
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- piston
- open hole
- hole well
- bridging plug
- cylinder sleeve
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Abstract
The invention discloses a kind of open hole well and easily bore bridging plug, comprising: open hole well easily bores bridging plug body and releasing tool, described releasing tool comprises: top connection, tube connector, central tube, piston, lower piston, cylinder sleeve and spring detent; Described open hole well easily bores bridging plug main body and comprises main center's pipe, meets hydrocarbon water-swellable formula packing element and lower contact.The present invention adopts the open hole well of meeting hydrocarbon water-swellable formula rubber easily to bore bridging plug body and loss instrument, realizes the bored bridge plugging of open hole well, for open hole well machine plugging or change plugging post, can two way seal and safely and fast brill remove.
Description
Technical field
The present invention relates to drilling applications, furtherly, relate to a kind of open hole well and easily bore bridging plug.
Background technology
Open hole packer be used for open hole well particularly open-hole horizontal well card envelope time, due to reasons such as hole diameter is irregular, cave-ins, trip out difficulty, especially sand output well, change stifled well construction time, dangerous.Drilling bridging plug can bore safely after construction and remove, and safety is high, but at present still not used for the drilling bridging plug of open hole well.
Common sub-releasing axle plug adopts compression type glue barrel, and expansion ratio is little, is not suitable for open hole well.And current bored bridging plug adopts the material such as ductile iron, brass usually, remove although can bore after construction, the brill milling cycle is longer.
Open hole packer mainly adopts expanding packing element and meets hydrocarbon water-swellable formula packing element, and expanding packing element is for ensureing elevated-temperature seal performance, and there is metallic support sheet usual inside, and itself cannot bore and remove.Meet hydrocarbon water-swellable formula packing element length very long, if adopt ductile cast iron material as interior pipe, bore except more difficult.
Summary of the invention
Have a big risk for solving open hole well card envelope in prior art, the problem of tubing string poor stability, the invention provides a kind of open hole well and easily bore bridging plug, the open hole well of meeting hydrocarbon water-swellable formula rubber is adopted easily to bore bridging plug main body and loss instrument, realize the bored bridge plugging of open hole well, for open hole well machine plugging or change plugging post, can two way seal and safely and fast brill remove.
The object of this invention is to provide a kind of open hole well and easily bore bridging plug.
Comprise: open hole well easily bores bridging plug main body and releasing tool,
Described releasing tool comprises: top connection, tube connector, central tube, piston, lower piston, cylinder sleeve and spring detent,
Top connection is tubulose, is enclosed within the upper end of central tube, is fixedly connected with central tube; The lower end outer wall cover of top connection has tube connector, and top connection is connected by pin with tube connector;
Described piston is step-like, and described tube connector lower end outer wall is fixedly connected with the upper end inwall of piston; Cylinder sleeve is arranged on outside piston, is fixedly connected with piston outer wall, and piston is stuck in the space of cylinder sleeve and central tube formation, and central tube is provided with pressure transmission hole, and central tube lower end outer wall is step-like, and lower piston is stuck in the space of step surface and cylinder sleeve, and is adjacent to piston; Joint between the corresponding piston of described pressure transmission hole and lower piston;
Cylinder sleeve bottom is provided with relief hole;
Described spring detent is arranged in the space between cylinder sleeve and central tube; The inner convex platform of spring detent blocks open hole well and easily bores groove on main center's pipe of bridging plug main body; Spring detent is stuck in space by the step of spring detent;
Described spring detent is parts conventional in this area.
Above-described being fixedly connected with preferably is threaded.
Described open hole well easily bores bridging plug main body and comprises main center's pipe, meets hydrocarbon water-swellable formula packing element and lower contact, described chance hydrocarbon water-swellable formula packing element is enclosed within outside main center's pipe, meet internal diameter and main center's pipe major diameter fit of hydrocarbon water-swellable formula packing element cover, described lower contact is tubulose, is fixedly connected with by pin with main center's pipe; Described main center pipe adopts glass fiber reinforced composite resin material, can adopt common glass fiber reinforced composite resin material in prior art, as: E glass fiber, S-1 glass fiber, S-3 glass fiber material etc.
Releasing tool is connected on tubing string by tubing thread, after being with open hole well easily to bore bridging plug to card seal point under releasing tool, suppress in oil pipe, pressure acts on piston by pressure transmission hole, it is up that piston promotes tube connector, cut off pin, piston driving cylinder sleeve is up, spring detent freely can be opened, continue up, cylinder sleeve drives spring detent up, pressure makes spring detent depart from open hole well and easily bores bridging plug top connection, continues up, the position more than relief hole on cylinder sleeve to lower piston, internal pressure is laid down from relief hole, and ground can judge to give up complete.
Current conventional open hole packer can realize the bottom shutoff to open-hole horizontal well, but due to reason deblocking difficulties such as hole diameter is irregular, cave-ins when needing to release envelope.Adopt open hole well of the present invention easily to bore bridging plug then to bore safely and remove.It is relatively simple for structure that open hole well easily bores bridging plug, and in it, pipe adopts glass fiber reinforced composite resin material, has that intensity is high, density is low, can bidirectional bearing, and stay well part without metal material, drillability is strong.Tubing transmission, special releasing tool is adopted to force to give up, safe and reliable.
Open hole well easily bores bridging plug and adopts releasing tool to carry and go into the well, and suppresses pressure and give up after putting in place, packing element meet hydrocarbon meet water after automatic expansion realize sealing.Need to release envelope to bore milling tool at present and bore and remove.Meet hydrocarbon water-swellable formula packing element and adopt macromolecular material, automatic expansion after chance hydrocarbon chance water, sealing open-hole annulus, can be applicable on various external packer of pipe.
When needs are in the middle part of open-hole horizontal well or when topization is stifled; need to protect bottom, because horizontal segment cannot back-up sand protection, conventional open hole packer cannot deblocking when top thes cement solidifies; still have no idea at present to realize protection bottom, change the function of stifled middle and upper part.Adopting open hole well easily to bore bridging plug then can reliably protecting bore hole horizontal segment bottom, blocks up, can conveniently bore except open hole well easily bores bridging plug after construction carrying out of middle and upper part, recovery lower horizontal production capacity.
Accompanying drawing explanation
Fig. 1 releasing tool (band open hole well easily bore bridging plug gives up before) structural representation
Fig. 2 releasing tool (band open hole well easily bore bridging plug gives up after) structural representation
Description of reference numerals:
1 top connection; 2 tube connectors; 3 central tubes; 4 pistons; 5 pressure transmission holes; 6 cylinder sleeves; 7 lower pistons;
8 relief holes; 9 spring detents; 10 main center's pipes; 11 lower contacts; 12 meet hydrocarbon water-swellable formula packing element; 13 steady pins
Detailed description of the invention
Below in conjunction with embodiment, further illustrate the present invention.
Embodiment:
A kind of open hole well easily bores bridging plug.
Comprise: open hole well easily bores bridging plug body and releasing tool,
Described releasing tool comprises: top connection, tube connector, central tube, piston, lower piston, cylinder sleeve and spring detent,
Top connection is tubulose, is enclosed within the upper end of central tube, is threaded with central tube; The lower end outer wall cover of top connection has tube connector, and top connection is connected by pin with tube connector;
Described piston is step-like, and described tube connector lower end outer wall is fixedly connected with the upper end inwall of piston; Cylinder sleeve is arranged on outside piston, is fixedly connected with piston outer wall, and piston is stuck in the space of cylinder sleeve and central tube formation, and central tube is provided with pressure transmission hole, and central tube lower end outer wall is step-like, and lower piston is stuck in the space of step surface and cylinder sleeve, and is adjacent to piston; Joint between the corresponding piston of described pressure transmission hole and lower piston;
Cylinder sleeve bottom is provided with relief hole;
Described spring detent is arranged in the space between cylinder sleeve and central tube; The inner convex platform of spring detent blocks open hole well and easily bores groove on main center's pipe of bridging plug main body; Spring detent is stuck in space by the step of spring detent.
Described open hole well easily bores bridging plug body and comprises main center's pipe, meets hydrocarbon water-swellable formula packing element and lower contact, described chance hydrocarbon water-swellable formula packing element is enclosed within outside main center's pipe, meet internal diameter and main center's pipe major diameter fit of hydrocarbon water-swellable formula packing element cover, described lower contact is tubulose, be fixedly connected with by pin with main center's pipe, the S-1 glass fiber material that described main center pipe adopts Taishan glass fiber Ltd to produce.
Releasing tool is connected on tubing string by tubing thread, after being with open hole well easily to bore bridging plug to card seal point under releasing tool, suppress in oil pipe, pressure acts on piston by pressure transmission hole, it is up that piston promotes tube connector, cut off pin, piston driving cylinder sleeve is up, spring detent freely can be opened, continue up, cylinder sleeve drives spring detent up, pressure makes spring detent depart from open hole well and easily bores bridging plug top connection, continues up, the position more than relief hole on cylinder sleeve to lower piston, internal pressure is laid down from relief hole, and ground can judge to give up complete.
Claims (2)
1. open hole well easily bores a bridging plug, comprising: open hole well easily bores bridging plug main body and releasing tool, it is characterized in that:
Described open hole well easily bores bridging plug main body and comprises main center's pipe, meets hydrocarbon water-swellable formula packing element and lower contact, described chance hydrocarbon water-swellable formula packing element is enclosed within outside main center's pipe, meet internal diameter and main center's pipe major diameter fit of hydrocarbon water-swellable formula packing element cover, described lower contact is tubulose, is fixedly connected with by pin with main center's pipe;
Described releasing tool comprises: top connection, tube connector, central tube, piston, lower piston, cylinder sleeve and spring detent,
Top connection is tubulose, is enclosed within the upper end of central tube, is fixedly connected with central tube; The lower end outer wall cover of top connection has tube connector, and top connection is connected by pin with tube connector;
Described piston is step-like, and described tube connector lower end outer wall is fixedly connected with the upper end inwall of piston; Cylinder sleeve is arranged on outside piston, is fixedly connected with piston outer wall, and piston is stuck in the space of cylinder sleeve and central tube formation, and central tube is provided with pressure transmission hole, and central tube lower end outer wall is step-like, and lower piston is stuck in the space of step surface and cylinder sleeve, and is adjacent to piston; Joint between the corresponding piston of described pressure transmission hole and lower piston;
Cylinder sleeve bottom is provided with relief hole;
Described spring detent is arranged in the space between cylinder sleeve and central tube; The inner convex platform of spring detent blocks open hole well and easily bores groove on main center's pipe of bridging plug main body; Spring detent is stuck in space by the step on spring detent.
2. open hole well as claimed in claim 1 easily bores bridging plug, it is characterized in that:
Described main center pipe adopts glass fiber reinforced composite resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289207.6A CN103590783B (en) | 2012-08-14 | 2012-08-14 | A kind of open hole well easily bores bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289207.6A CN103590783B (en) | 2012-08-14 | 2012-08-14 | A kind of open hole well easily bores bridging plug |
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| Publication Number | Publication Date |
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| CN103590783A CN103590783A (en) | 2014-02-19 |
| CN103590783B true CN103590783B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210289207.6A Active CN103590783B (en) | 2012-08-14 | 2012-08-14 | A kind of open hole well easily bores bridging plug |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108570218B (en) * | 2017-03-14 | 2021-07-23 | 中国石油化工股份有限公司 | Method for increasing drilling and grinding speed of drillable composite material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1342927A (en) * | 1918-12-07 | 1920-06-08 | Arthur T Ruthven | Well-plugging apparatus |
| US2050970A (en) * | 1935-08-06 | 1936-08-11 | Eastman Oil Well Survey Co | Open hole bridger and support |
| US2344121A (en) * | 1940-09-23 | 1944-03-14 | Bassinger Ross | Releasable setting tool and by-pass |
| CN86208780U (en) * | 1986-11-06 | 1988-10-05 | 新疆石油管理局油田工艺研究所 | Drillable bridge chocke plug |
| US5366010A (en) * | 1991-04-06 | 1994-11-22 | Zwart Klaas J | Retrievable bridge plug and a running tool therefor |
| CN201513155U (en) * | 2009-09-16 | 2010-06-23 | 杨增学 | Bridge plug releasing packer |
| CN201546667U (en) * | 2009-11-04 | 2010-08-11 | 中国石油天然气股份有限公司 | Multifunctional oil pipe bridge plug |
| CN102493782A (en) * | 2011-12-15 | 2012-06-13 | 中国石油集团渤海钻探工程有限公司 | Bridge plug for horizontal well |
-
2012
- 2012-08-14 CN CN201210289207.6A patent/CN103590783B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1342927A (en) * | 1918-12-07 | 1920-06-08 | Arthur T Ruthven | Well-plugging apparatus |
| US2050970A (en) * | 1935-08-06 | 1936-08-11 | Eastman Oil Well Survey Co | Open hole bridger and support |
| US2344121A (en) * | 1940-09-23 | 1944-03-14 | Bassinger Ross | Releasable setting tool and by-pass |
| CN86208780U (en) * | 1986-11-06 | 1988-10-05 | 新疆石油管理局油田工艺研究所 | Drillable bridge chocke plug |
| US5366010A (en) * | 1991-04-06 | 1994-11-22 | Zwart Klaas J | Retrievable bridge plug and a running tool therefor |
| CN201513155U (en) * | 2009-09-16 | 2010-06-23 | 杨增学 | Bridge plug releasing packer |
| CN201546667U (en) * | 2009-11-04 | 2010-08-11 | 中国石油天然气股份有限公司 | Multifunctional oil pipe bridge plug |
| CN102493782A (en) * | 2011-12-15 | 2012-06-13 | 中国石油集团渤海钻探工程有限公司 | Bridge plug for horizontal well |
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| CN103590783A (en) | 2014-02-19 |
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