CN105971557A - Completely-dissolvable bridge plug - Google Patents
Completely-dissolvable bridge plug Download PDFInfo
- Publication number
- CN105971557A CN105971557A CN201610535373.8A CN201610535373A CN105971557A CN 105971557 A CN105971557 A CN 105971557A CN 201610535373 A CN201610535373 A CN 201610535373A CN 105971557 A CN105971557 A CN 105971557A
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- China
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- ring
- packing element
- retaining mechanism
- shear pin
- central canal
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Classifications
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a completely-dissolvable bridge plug which comprises a push barrel, a center pipe, a protective bowl, rings, rubber barrels, pre-tightening screws, locking mechanisms, a wedge-shaped barrel, shear pins, a slip and a conical barrel. The rings comprise the upper adjustable pumping ring, the movable push ring and the lower adjustable pumping ring. The rubber barrels comprise the upper rubber barrel, the middle rubber barrel and the lower rubber barrel. The pre-tightening screws comprise the first pre-tightening screw and the second pre-tightening screw. The locking mechanisms comprise the first locking mechanism and the second locking mechanism. The shear pins comprise the rubber barrel seat seal shear pin and the slip shear pin. The tool is provided with the adjustable pumping ring, and therefore pumping efficiency is high. All the components are completely dissolved without drilling polishing after being cracked, the construction period can be shortened, the operation cost can be reduced, the operation risk can be lowered, and the using effect is good.
Description
Technical field
The present invention relates to the complete molten bridging plug of the one applied in petroleum gas field, specifically horizontal well completion transformation process.
Background technology
In industrial gas oil field, generally use bridging plug to realize mechanical separator transformation, owing to bridging plug has the advantages such as working procedure is few, block envelope position accurately, segmentation progression is many, transformation scale is big, be therefore widely used in low-permeability oil gas well and shale gas well.That commonly uses in existing engineering mainly has composite bridge plug and big orifice bridging plug, and composite bridge plug needs after using, with the method removal bridging plug boring mill, to be formed and produce passage；Big orifice bridging plug has relatively big orifice, although being not required to bore plug after using can directly go into operation, but it forms throttling on production passage and is unfavorable for exploitation, phase such as needs well workover the most after manufacture, still need to carry out boring grinder sequence, however as being continuously increased of unconventionaloil pool well horizontal section length, the difficulty utilizing continuous tubing drill to grind is increasing, and this just brings inconvenience for the application in engineering.
Summary of the invention
It is an object of the invention to provide a kind of complete molten bridging plug, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
nullA kind of complete molten bridging plug，Including pushing cylinder、Central canal、Protection bowl、Ring、Packing element、Pre-loading screw、Retaining mechanism、Wedge shape cylinder、Shear pin、Slips and conically shaped，Described ring includes adjustable pumping into ring、Movable throw-out collar and under adjustable pump into ring，Packing element includes packing element、Middle packing element and lower rubber cylinder，Pre-loading screw includes the first pre-loading screw and the second pre-loading screw，Retaining mechanism includes the first retaining mechanism and the second retaining mechanism，Shear pin includes that packing element sets shear pin and slips shear pin，Pushing cylinder is connected by trapezoidal thread with central canal，The top of pushing cylinder is provided with ball seat，Protection bowl is threaded connection with central canal，The upper adjustable ring that pumps into is threaded connection with protection bowl，On central canal, sulfuration has upper packing element respectively、Middle packing element and lower rubber cylinder，And it is provided with movable throw-out collar on central canal，Under the adjustable ring that pumps into be threaded connection with movable throw-out collar，The first retaining mechanism it is provided with between central canal and wedge shape cylinder，First retaining mechanism is provided above the first pre-loading screw，It is provided with packing element between wedge shape cylinder and central canal and sets shear pin，Multi-disc slips it is provided with between wedge shape cylinder and conically shaped，The second retaining mechanism it is provided with between conically shaped and central canal，Second retaining mechanism is provided above the second pre-loading screw，Slips shear pin it is provided with between conically shaped and central canal.
As the further scheme of the present invention: pushing cylinder, central canal, protection bowl, upper adjustable pump into ring, movable throw-out collar, under adjustable ring, the first pre-loading screw, the first retaining mechanism, wedge shape cylinder, packing element shear pin, slips, conically shaped, the second pre-loading screw, the second retaining mechanism and the slips shear pin of pumping into all use water-soluble alloy to make.
As the further scheme of the present invention: upper packing element, middle packing element and lower rubber cylinder all use functional rubber to make.
As the further scheme of the present invention: upper the most adjustable pump into ring and under the adjustable external diameter pumping into ring identical and upper adjustable pump into ring and under the adjustable external diameter pumping into ring be all higher than or be equal to the external diameter of other parts.
Compared with prior art, the invention has the beneficial effects as follows: this tool construction is simple, and reasonable in design, failure rate is low, safety in utilization is good；This instrument be provided with adjustable pump into ring and under the adjustable ring that pumps into, pumping efficiency is high；After pressure break, all parts all dissolve without boring mill, can shorten construction period, reduce operating cost, reduce operating risk, and using effect is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of complete molten bridging plug.
Wherein: 1-pushing cylinder, 2-central canal, 3-protects bowl; the upper adjustable ring that pumps into of 4-, the upper packing element of 5-, packing element in 6-; 7-lower rubber cylinder, the movable throw-out collar of 8-, adjustable under 9-pump into ring; 10-the first pre-loading screw, 11-the first retaining mechanism, 12-wedge shape cylinder; 13-packing element sets shear pin, 14-slips, 15-conically shaped; 16-the second pre-loading screw, 17-the second retaining mechanism, 18-slips shear pin.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
nullRefer to Fig. 1，A kind of complete molten bridging plug，Including pushing cylinder 1、Central canal 2、Protection bowl 3、Ring、Packing element、Pre-loading screw、Retaining mechanism、Wedge shape cylinder 12、Shear pin、Slips 14 and conically shaped 15，Described ring includes adjustable pumping into ring 4、Movable throw-out collar 8 and under adjustable pump into ring 9，Packing element includes packing element 5、Middle packing element 6 and lower rubber cylinder 7，Pre-loading screw includes the first pre-loading screw 10 and the second pre-loading screw 16，Retaining mechanism includes the first retaining mechanism 11 and the second retaining mechanism 17，Shear pin includes that packing element sets shear pin 13 and slips shear pin 18，Pushing cylinder 1 is connected by trapezoidal thread with central canal 2，The top of pushing cylinder 1 is provided with ball seat，Protection bowl 3 is threaded connection with central canal 2，The upper adjustable ring 4 that pumps into is threaded connection with protection bowl 3，On central canal 2, sulfuration has upper packing element 5 respectively、Middle packing element 6 and lower rubber cylinder 7，And it is provided with movable throw-out collar 8 on central canal 2，Under the adjustable ring 9 that pumps into be threaded connection with movable throw-out collar 8，The first retaining mechanism 11 it is provided with between central canal 2 and wedge shape cylinder 12，First retaining mechanism 11 is provided above the first pre-loading screw 10，It is provided with packing element between wedge shape cylinder 12 and central canal 2 and sets shear pin 13，Multi-disc slips 14 it is provided with between wedge shape cylinder 12 and conically shaped 15，The second retaining mechanism 17 it is provided with between conically shaped 15 and central canal 2，Second retaining mechanism 17 is provided above the second pre-loading screw 16，Slips shear pin 18 it is provided with between conically shaped 15 and central canal 2.Pushing cylinder 1, central canal 2, protection bowl 3, upper adjustable pump into ring 4, movable throw-out collar 8, under adjustable ring the 9, first pre-loading screw the 10, first retaining mechanism 11, wedge shape cylinder 12, packing element shear pin 13, slips 14, conically shaped the 15, second pre-loading screw the 16, second retaining mechanism 17 and the slips shear pin 18 of pumping into all use water-soluble alloy to make；Upper packing element 5, middle packing element 6 and lower rubber cylinder 7 all use functional rubber to make, and all parts dissolve in slippery water, clear water and KCL solution.Upper the most adjustable pump into ring 4 and under the adjustable external diameter pumping into ring 9 identical and upper adjustable pump into ring 4 and under the adjustable external diameter pumping into ring 9 be all higher than or be equal to the external diameter of other parts.
Before using, according to the pre-interior latus rectum using casing and upper packing element 5, middle packing element 6 and the sealing range of lower rubber cylinder 7, install suitable dimension upper adjustable pump into ring 4 and under the adjustable ring 9 that pumps into, improve pumping efficiency；Bridging plug arranges value (gunpowder loadings) according to the thrust of setting tool before entering well and regulates the first pre-loading screw 10 and pretension value of the second pre-loading screw 16；During use, this device is connected with special setting tool, enters by under cable, and straight well section is transferred by gravity, delivers to precalculated position by hydraulic pump after entering lower curved section；nullSetting tool is started after cable energising，The cylinder that sets on setting tool acts on pushing cylinder 1，Pintongs slips on setting tool pull bar promotes conically shaped 15 to move relative to central canal 2，When thrust is more than the shearing strength of slips shear pin 18，Slips shear pin 18 is cut off，Under the lasting thrust that setting tool produces，Slips 14 moves along the conical surface of wedge shape cylinder 12 and gradually opens，Thrust continues to increase，Packing element sets shear pin 13 and is cut off，Wedge shape cylinder 12 promotes the upper packing element 5 of movable throw-out collar 8 extruding、Middle packing element 6 and lower rubber cylinder 7 thus realize sealing the effect that casing annulus is anchored on sleeve pipe with slips 14，First retaining mechanism 11 and the second retaining mechanism 17 are had an effect simultaneously，Prevent movable throw-out collar 8、Upper packing element 5、Middle packing element 6、Lower rubber cylinder 7、Wedge shape cylinder 12 and conically shaped 15 resilience cause sealing and grappling inefficacy.Setting tool improves pulling force further afterwards, and the pin of giving up on setting tool is cut off, it is achieved give up.Complete after bridging plug sets and give up, above to carry perforation pipe string and carry out many showers hole in setting position, then play perforation hole pipe string, and put into solvable setting ball, be then carried out pressing crack construction.After pressure break, complete molten bridging plug the most all dissolves with solvable setting ball, thus realizes full-bore and produce.
This tool construction is simple, and reasonable in design, failure rate is low, safety in utilization is good；This instrument be provided with adjustable pump into ring 4 and under the adjustable ring 9 that pumps into, pumping efficiency is high, and after pressure break, all parts all dissolve without boring mill, can shorten construction period, reduce operating cost, reduce operating risk, and using effect is good.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art is possessed, it is also possible to various changes can be made on the premise of without departing from this patent objective.
Claims (4)
- null1. a complete molten bridging plug，It is characterized in that，Including pushing cylinder、Central canal、Protection bowl、Ring、Packing element、Pre-loading screw、Retaining mechanism、Wedge shape cylinder、Shear pin、Slips and conically shaped，Described ring includes adjustable pumping into ring、Movable throw-out collar and under adjustable pump into ring，Packing element includes packing element、Middle packing element and lower rubber cylinder，Pre-loading screw includes the first pre-loading screw and the second pre-loading screw，Retaining mechanism includes the first retaining mechanism and the second retaining mechanism，Shear pin includes that packing element sets shear pin and slips shear pin，Pushing cylinder is connected by trapezoidal thread with central canal，The top of pushing cylinder is provided with ball seat，Protection bowl is threaded connection with central canal，The upper adjustable ring that pumps into is threaded connection with protection bowl，On central canal, sulfuration has upper packing element respectively、Middle packing element and lower rubber cylinder，And it is provided with movable throw-out collar on central canal，Under the adjustable ring that pumps into be threaded connection with movable throw-out collar，The first retaining mechanism it is provided with between central canal and wedge shape cylinder，First retaining mechanism is provided above the first pre-loading screw，It is provided with packing element between wedge shape cylinder and central canal and sets shear pin，Multi-disc slips it is provided with between wedge shape cylinder and conically shaped，The second retaining mechanism it is provided with between conically shaped and central canal，Second retaining mechanism is provided above the second pre-loading screw，Slips shear pin it is provided with between conically shaped and central canal.
- Complete molten bridging plug the most according to claim 1, it is characterised in that: pushing cylinder, central canal, protection bowl, upper adjustable pump into ring, movable throw-out collar, under adjustable pump into ring, the first pre-loading screw, the first retaining mechanism, wedge shape cylinder, packing element set shear pin, slips, conically shaped, the second pre-loading screw, the second retaining mechanism and slips shear pin and all use water-soluble alloy to make.
- Complete molten bridging plug the most according to claim 1, it is characterised in that described upper packing element, middle packing element and lower rubber cylinder all use functional rubber to make.
- Complete molten bridging plug the most according to claim 1 and 2, it is characterised in that described adjustable pump into ring with under the adjustable external diameter pumping into ring identical, and upper adjustable pump into ring and under the adjustable external diameter pumping into ring be all higher than or equal to the external diameter of other part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610535373.8A CN105971557A (en) | 2016-07-08 | 2016-07-08 | Completely-dissolvable bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610535373.8A CN105971557A (en) | 2016-07-08 | 2016-07-08 | Completely-dissolvable bridge plug |
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| Publication Number | Publication Date |
|---|---|
| CN105971557A true CN105971557A (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610535373.8A Pending CN105971557A (en) | 2016-07-08 | 2016-07-08 | Completely-dissolvable bridge plug |
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| CN (1) | CN105971557A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437614A (en) * | 2016-10-18 | 2017-02-22 | 中国石油集团长城钻探工程有限公司 | Horizontal well full-bore soluble degradable fracturing bridge plug |
| CN107013181A (en) * | 2017-05-25 | 2017-08-04 | 克拉玛依启源石油科技有限公司 | Dissolvable bridge plug and bridging plug frac system |
| CN107489397A (en) * | 2017-09-01 | 2017-12-19 | 成都维泰油气能源技术有限公司 | A kind of solvable bridging plug and oil gas well shaft insulate method temporarily |
| CN108150130A (en) * | 2016-12-06 | 2018-06-12 | 中国石油天然气股份有限公司 | Fracturing bridge plug |
| CN108412475A (en) * | 2018-05-11 | 2018-08-17 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of press-fracturing bridge plug |
| CN110552659A (en) * | 2019-09-19 | 2019-12-10 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | All-metal soluble bridge plug |
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| US20140190685A1 (en) * | 2008-12-23 | 2014-07-10 | Frazier Technologies, L.L.C. | Downhole tools having non-toxic degradable elements and methods of using the same |
| CN104612626A (en) * | 2015-02-11 | 2015-05-13 | 四机赛瓦石油钻采设备有限公司 | Bridge plug with large drift diameter |
| CN204532243U (en) * | 2015-04-01 | 2015-08-05 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A kind of big orifice press-fracturing bridge plug |
| CN204782916U (en) * | 2015-06-16 | 2015-11-18 | 中国石油天然气股份有限公司 | Bridge plug for casing fracturing |
| CN204899847U (en) * | 2015-07-20 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Rapid degradation bridging plug |
| CN205908282U (en) * | 2016-07-08 | 2017-01-25 | 四川省贝特石油技术有限公司 | Dissolve bridging plug entirely |
-
2016
- 2016-07-08 CN CN201610535373.8A patent/CN105971557A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140190685A1 (en) * | 2008-12-23 | 2014-07-10 | Frazier Technologies, L.L.C. | Downhole tools having non-toxic degradable elements and methods of using the same |
| CN104612626A (en) * | 2015-02-11 | 2015-05-13 | 四机赛瓦石油钻采设备有限公司 | Bridge plug with large drift diameter |
| CN204532243U (en) * | 2015-04-01 | 2015-08-05 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A kind of big orifice press-fracturing bridge plug |
| CN204782916U (en) * | 2015-06-16 | 2015-11-18 | 中国石油天然气股份有限公司 | Bridge plug for casing fracturing |
| CN204899847U (en) * | 2015-07-20 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Rapid degradation bridging plug |
| CN205908282U (en) * | 2016-07-08 | 2017-01-25 | 四川省贝特石油技术有限公司 | Dissolve bridging plug entirely |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437614A (en) * | 2016-10-18 | 2017-02-22 | 中国石油集团长城钻探工程有限公司 | Horizontal well full-bore soluble degradable fracturing bridge plug |
| CN106437614B (en) * | 2016-10-18 | 2019-01-22 | 中国石油集团长城钻探工程有限公司 | The solvable degradable press-fracturing bridge plug of horizontal well full-bore |
| CN108150130A (en) * | 2016-12-06 | 2018-06-12 | 中国石油天然气股份有限公司 | Fracturing bridge plug |
| CN107013181A (en) * | 2017-05-25 | 2017-08-04 | 克拉玛依启源石油科技有限公司 | Dissolvable bridge plug and bridging plug frac system |
| CN107013181B (en) * | 2017-05-25 | 2023-09-19 | 克拉玛依启源石油科技有限公司 | Dissolvable bridge plug and bridge plug fracturing system |
| CN107489397A (en) * | 2017-09-01 | 2017-12-19 | 成都维泰油气能源技术有限公司 | A kind of solvable bridging plug and oil gas well shaft insulate method temporarily |
| CN108412475A (en) * | 2018-05-11 | 2018-08-17 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of press-fracturing bridge plug |
| CN108412475B (en) * | 2018-05-11 | 2024-06-11 | 中国石油化工股份有限公司 | Fracturing bridge plug |
| CN110552659A (en) * | 2019-09-19 | 2019-12-10 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | All-metal soluble bridge plug |
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Application publication date: 20160928 |
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| RJ01 | Rejection of invention patent application after publication |