CN103590783A - Open hole easy-drilled bridge plug - Google Patents
Open hole easy-drilled bridge plug Download PDFInfo
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- CN103590783A CN103590783A CN201210289207.6A CN201210289207A CN103590783A CN 103590783 A CN103590783 A CN 103590783A CN 201210289207 A CN201210289207 A CN 201210289207A CN 103590783 A CN103590783 A CN 103590783A
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- piston
- open hole
- central tube
- bridging plug
- cylinder sleeve
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Abstract
The invention discloses an open hole easy-drilled bridge plug which comprises an open hole easy-drilled bridge plug body and a releasing tool. The releasing tool comprises an upper connector, a connection pipe, a center pipe, a piston, a lower piston, a cylinder sleeve and a spring claw. The open hole easy-drilled bridge plug body comprises a body center pipe, a rubber sleeve capable of expanding when meeting hydrocarbon and water and a lower connector. By means of the open hole easy-drilled bridge plug body adopting the rubber capable of expanding when meeting hydrocarbon and water and the releasing tool, drillable bridge plug blocking of an open hole is achieved. The plug is used for mechanical blocking of the open hole or blocking removing tubular columns, is capable of conducting two-way sealing and can be removed in a drilling mode safely and quickly.
Description
Technical field
The present invention relates to drilling well field, furtherly, relate to a kind of open hole well and easily bore bridging plug.
Background technology
Open hole packer, for open hole well open-hole horizontal well card when envelope particularly, due to reasons such as hole diameter is irregular, cave-ins, trips out difficulty, especially at sand output well, while changing stifled well construction, risk is very big.Drilling bridging plug can bore and remove safely after construction, safe, but at present still not 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 materials such as ductile iron, brass conventionally, although can bore and remove after construction, bore the milling cycle longer.
Open hole packer mainly adopts expanding packing element and meets hydrocarbon water-swellable formula packing element, and expanding packing element is for guaranteeing elevated-temperature seal performance, and there is metallic support sheet inside conventionally, and itself cannot bore and remove.Meet hydrocarbon water-swellable formula packing element length very long, if adopt ductile cast iron material as inner tube, bore except more difficult.
Summary of the invention
For solving open hole well card envelope in prior art, have a big risk, the problem of tubing string poor stability, the invention provides a kind of open hole well and easily bore bridging plug, adopt the open hole well of meeting hydrocarbon water-swellable formula rubber easily to bore bridging plug main body and loss instrument, realize the bored bridge plugging of open hole well, for the machine plugging of open hole well 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, is provided with pressure transmission hole on central tube, 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 the groove on the central tube that open hole well easily bores 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 be fixedly connected with to be preferably be 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, the internal diameter of chance hydrocarbon water-swellable formula packing element cover is managed external diameter with main center and is coordinated, described lower contact is that tubulose ，Tong main center pipe is fixedly connected with by pin; Described body central tube 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, under releasing tool, be with open hole well easily to bore bridging plug to blocking after seal point, in oil pipe, suppress, 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, and spring detent can freely be opened, and continues up, cylinder sleeve drives spring detent up, pressure makes spring detent depart from open hole well and easily bores bridging plug top connection, continues uply, and the relief hole on cylinder sleeve is to position more than lower piston, internal pressure is laid down from relief hole, ground can judge give up complete.
Current conventional open hole packer can be realized the bottom shutoff to open-hole horizontal well, but need to release while sealing due to reason deblocking difficulties such as hole diameter is irregular, cave-ins.Adopting open hole well of the present invention easily to bore bridging plug can bore and remove safely.It is relatively simple for structure that open hole well easily bores bridging plug, and its inner tube 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.Adopt tubing transmission, special-purpose releasing tool to force to give up, safe and reliable.
Open hole well easily bores bridging plug and adopts releasing tool to carry to go into the well, suppress and force to give up after putting in place, packing element meet hydrocarbon meet water after automatic expansion realize sealing.Need to release envelope bores at present milling tool and bores and to 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, due to horizontal segment cannot back-up sand protection, cannot deblocking when conventional open hole packer thes cement solidifies at top; still have no idea at present to realize the function of protection ，Hua Du middle and upper part, bottom.Adopt open hole well easily to bore bridging plug can reliably protecting bore hole horizontal segment bottom ，Dui middle and upper partization stifled, after construction, can conveniently bore and easily bore bridging plug, recovery lower horizontal production capacity except open hole well.
Accompanying drawing explanation
Fig. 1 releasing tool (band open hole well easily bore bridging plug give up before) structural representation
Fig. 2 releasing tool (band open hole well easily bore bridging plug give 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; 11 lower contacts; 12 meet hydrocarbon water-swellable formula packing element; 13 steady pins
The specific embodiment
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, is provided with pressure transmission hole on central tube, 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 the groove on the central tube that open hole well easily bores 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 body central tube, meets hydrocarbon water-swellable formula packing element and lower contact, described chance hydrocarbon water-swellable formula packing element is enclosed within outside body central tube, the internal diameter of meeting hydrocarbon water-swellable formula packing element cover coordinates with body central tube external diameter, described lower contact is tubulose, with main center's pipe, by pin, be fixedly connected with the S-1 glass fiber material that described body central tube adopts Taishan glass fiber Ltd to produce.
Releasing tool is connected on tubing string by tubing thread, under releasing tool, be with open hole well easily to bore bridging plug to blocking after seal point, in oil pipe, suppress, 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, and spring detent can freely be opened, and continues up, cylinder sleeve drives spring detent up, pressure makes spring detent depart from open hole well and easily bores bridging plug top connection, continues uply, and the relief hole on cylinder sleeve is to position more than lower piston, internal pressure is laid down from relief hole, ground can judge give up complete.
Claims (4)
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 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, is provided with pressure transmission hole on central tube, 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 the groove on the central tube that open hole well easily bores 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 being fixedly connected as is threaded.
3. open hole well as claimed in claim 1 easily bores bridging plug, 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, the internal diameter of chance hydrocarbon water-swellable formula packing element cover is managed external diameter with main center and is coordinated, described lower contact is that tubulose ，Tong main center pipe is fixedly connected with by pin.
4. open hole well as claimed in claim 3 easily bores bridging plug, it is characterized in that:
Described central tube 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103590783A true CN103590783A (en) | 2014-02-19 |
| CN103590783B CN103590783B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570218A (en) * | 2017-03-14 | 2018-09-25 | 中国石油化工股份有限公司 | A kind of method that raising can bore composite material brill mill speed |
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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570218A (en) * | 2017-03-14 | 2018-09-25 | 中国石油化工股份有限公司 | A kind of method that raising can bore composite material brill mill speed |
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| Publication number | Publication date |
|---|---|
| CN103590783B (en) | 2015-12-09 |
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