CN109899028A - A kind of solvable bridge plug - Google Patents
A kind of solvable bridge plug Download PDFInfo
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- CN109899028A CN109899028A CN201910341532.4A CN201910341532A CN109899028A CN 109899028 A CN109899028 A CN 109899028A CN 201910341532 A CN201910341532 A CN 201910341532A CN 109899028 A CN109899028 A CN 109899028A
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- bridge plug
- slips
- ring
- hydrotropy
- packing element
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Abstract
The present invention provides a kind of solvable bridge plugs, it is related to bridge plug field, including bridge plug main body and the hydrotropy mechanism being fixedly connected with bridge plug main body, bridge plug main body includes central tube, bridge plug main body further includes the lead ring being successively from left to right socketed on central tube, upper slips, lock ring, upper centrum, three packing element mechanisms, hypocentrum, lower slips and guide shoe, lead ring, upper slips, lock ring, upper centrum, three packing element mechanisms, hypocentrum and lower slips are slidably connected with central tube respectively, guide shoe is fixedly connected with center tube end, upper slips lower part is inserted into upper centrum one end, lower slips lower part is inserted into hypocentrum one end, hydrotropy mechanism includes multiple hydrotropy blocks being fixedly connected with bridge plug body outer surface, so that the present invention realizes the solution rate of effectively control bridge plug.
Description
Technical field
The present invention relates to bridge plug field more particularly to a kind of solvable bridge plugs.
Background technique
Since the intensity of magnesium alloy materials is big and light weight, so completion tool has gradually adopted magnesium alloy to replace aluminium
Alloy production, bridge plug mostly use greatly following steps when in use: completing first section pressure break, assembling perforation tool and bridge plug, will assemble
Rear tool is packed into lubricator, tripping in perforation tool and bridge plug, swings one's arm after bridge plug positioning, multistage is completed using perforation tool penetrates
Ball sealer is pumped to the ball seat of bridge plug, casing injection mode carries out pressure break and then uses drilling well by hole, well head investment ball sealer
It bores mill equipment to be crushed bridge plug and ball sealer, realizes that oil/gas well is fuel-displaced.
But in the horizontal well of existing horizontal well distal end or overlength, the brill of drilling bridging plug grinds low efficiency, bores tribulation degree
It is big at high cost, and drilling bridging plug leakproofness in the prior art is unreliable, so to solve the above-mentioned problems, in recent years I
Technical staff have developed magnesium alloy dissolvable bridge plug, but the solution rate of magnesium alloy dissolvable bridge plug is difficult to effectively control,
Before pressure break process, it is ensured that solvable bridge plug, which is slowly dissolved, not to be dissolved even, is guaranteed going on smoothly for pressure break process, otherwise will be made
At the cost that fracturing fluid etc. is high；After the completion of pressure break process, then requires solvable bridge plug to dissolve completion as early as possible, go out convenient for oil well
Otherwise oil will cause great time cost, therefore the solution rate for how effectively controlling bridge plug becomes this field skill
Art personnel's urgent problem to be solved.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, providing a kind of solution rate can
The solvable bridge plug of control.
The present invention is to be achieved by the following technical programs: a kind of solvable bridge plug, including bridge plug main body and and bridge plug
The hydrotropy mechanism that main body is fixedly connected, bridge plug main body include central tube, and bridge plug main body further includes in being successively from left to right socketed in
Lead ring, upper slips, lock ring, upper centrum, three packing element mechanisms, hypocentrum, lower slips and guide shoe on heart pipe, lead ring, upper slips,
Lock ring, upper centrum, three packing element mechanisms, hypocentrum and lower slips are slidably connected with central tube respectively, guide shoe and center tube end
Be fixedly connected, upper slips lower part is inserted into upper centrum one end, and lower slips lower part is inserted into hypocentrum one end, hydrotropy mechanism include it is multiple with
The hydrotropy block that bridge plug body outer surface is fixedly connected.
According to the above technical scheme, it is preferable that three packing element mechanisms include seal assembly packing element, two metal coating rings, hold
Ring and cylinder spacer ring are stayed, metal coating ring is connected with seal assembly packing element both ends respectively, holds and ring is stayed to be located at seal assembly packing element
Middle part, cylinder spacer ring are located at seal assembly packing element inner right side, hold and stay ring and cylinder spacer ring close with seal assembly packing element inner wall
Fitting.
According to the above technical scheme, it is preferable that seal assembly packing element is made of solvable rubber.
According to the above technical scheme, it is preferable that upper slips and lower slips surface loop are around being fixedly connected with multiple slips grains.
According to the above technical scheme, it is preferable that lead ring, upper slips, lock ring, upper centrum, hypocentrum and lower slips are adopted
It is made of magnesium alloy materials.
According to the above technical scheme, it is preferable that monodirectional locking structure is equipped between lock ring and central tube.
According to the above technical scheme, it is preferable that central tube front is equipped with non-return shelves pin.
According to the above technical scheme, it is preferable that multiple strip grooves are offered in bridge plug main body, it is recessed that hydrotropy block is located at bar shaped
In slot, hydrotropy block is fixedly connected with strip groove.
According to the above technical scheme, it is preferable that hydrotropy block includes iron chloride and potassium chloride, and hydrotropy block is in subsurface environment
Slow release effective component.
The beneficial effects of the present invention are: the present invention is in use, setting tool pushes lead ring to move to the right, in lead ring promotion
Slips and upper centrum move to the right, while upper centrum pushes lock ring to move right, centrum and lock ring retaining, in pull-up
Ring is derived under heart pipe, upper centrum and hypocentrum squeeze three packing element mechanisms respectively, and three packing element mechanisms are fitted closely with internal surface of sleeve pipe,
Upper slips and lower slips are embedded in internal surface of sleeve pipe simultaneously, to complete to set process；When pressure break process carries out, hydrotropy mechanism surface layer
There are protective layers, can guarantee going on smoothly for pressure break process；After the completion of pressure break process, since protective layer is corrupted such that
Hydrotropy block is gradually contacted with the liquid environment of high temperature and pressure, is dissolved rapidly, the lysigenous cosolvent of hydrotropy block and bridge plug main body
Electrochemical reaction occurs, realizes the quick dissolution of bridge plug main body, to realize the solution rate of effectively control bridge plug.
Detailed description of the invention
Fig. 1 shows the schematic view of the front view of embodiment according to the present invention.
In figure: 1. central tubes, 2. lead rings, 3. upper slips, 4. lock rings, centrum on 5., 6. 3 packing element mechanisms, 7. hypocentrums,
8. lower slips, 9. guide shoes, 10. hydrotropy blocks, 11. seal assembly packing elements, 12. metal coating rings, 13. hold and stay ring, 14. spacer rings,
15. slips grain, 16. monodirectional locking structures, 17. non-return shelves pins, 18. strip grooves.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawing and most
The present invention is described in further detail for good embodiment.
As shown, the present invention provides a kind of solvable bridge plug, including bridge plug main body and it is fixedly connected with bridge plug main body
Hydrotropy mechanism, bridge plug main body includes central tube 1, and bridge plug main body further includes successively from left to right being socketed in leading on central tube 1
Ring 2, upper slips 3, lock ring 4, upper centrum 5, three packing element mechanisms 6, hypocentrum 7, lower slips 8 and guide shoe 9, lead ring 2, upper slips 3,
Lock ring 4, upper centrum 5, three packing element mechanisms 6, hypocentrum 7 and lower slips 8 are slidably connected with central tube 1 respectively, guide shoe 9 and center
1 end of pipe is fixedly connected, and 3 lower part of upper slips is inserted into upper 5 one end of centrum, and 8 lower part of lower slips, hydrotropy machine are inserted into 7 one end of hypocentrum
Structure includes multiple hydrotropy blocks 10 being fixedly connected with bridge plug body outer surface, the present invention in use, setting tool push lead ring 2 to
Right side movement, lead ring 2 push upper slips 3 and upper centrum 5 to move to the right, and upper centrum 5 pushes lock ring 4 to move right, upper vertebra
4 retaining of body 5 and lock ring, pull-up central tube 1 is lower to derive ring 2, and upper centrum 5 and hypocentrum 7 squeeze three packing element mechanisms 6 respectively,
Three packing element mechanisms 6 are fitted closely with internal surface of sleeve pipe, while upper slips 3 and lower slips 8 are embedded in internal surface of sleeve pipe, to complete to set
Process；When pressure break process carries out, there are protective layers on hydrotropy mechanism surface layer, can guarantee going on smoothly for pressure break process；Work as pressure break
It is molten rapidly since protective layer is corrupted such that hydrotropy block 10 is gradually contacted with the liquid environment of high temperature and pressure after the completion of process
Electrochemical reaction occurs for solution, the lysigenous cosolvent of hydrotropy block 10 and bridge plug main body, realizes the quick dissolution of bridge plug main body, from
And realize the solution rate of effectively control bridge plug.
According to above-described embodiment, it is preferable that three packing element mechanisms 6 include 11, two metal coating rings 12 of seal assembly packing element,
It holds and stays ring 13 and cylinder spacer ring 14, metal coating ring 12 is connected with 11 both ends of seal assembly packing element respectively, holds and ring 13 is stayed to be located at
11 middle part of seal assembly packing element, cylinder spacer ring 14 are located at 11 inner right side of seal assembly packing element, hold and stay ring 13 and cylinder spacer ring 14 equal
It is fitted closely with 11 inner wall of seal assembly packing element.
According to above-described embodiment, it is preferable that seal assembly packing element 11 is made of solvable rubber, can be in high temperature and pressure item
Effectively sealing is realized under part, and realizes and smoothly dissolves after the completion of pressure break process, reduces residue.
According to above-described embodiment, it is preferable that upper slips 3 and 8 surface loop of lower slips are around being fixedly connected with multiple slips grains
15, sleeve lining is locked in by slips grain 15 convenient for upper slips 3 and lower slips 8, enhances the stability of bridge plug, prevents bridge plug
Slided in pressure break process.
According to above-described embodiment, it is preferable that lead ring 2, upper slips 3, lock ring 4, upper centrum 5, hypocentrum 7 and lower slips 8
It is all made of magnesium alloy materials to be made, magnesium alloy material is light relative to aluminium alloy material and intensity is larger, convenient for bridge plug is mobile
In place；The high temperature resistance of magnesium alloy materials is excellent.
According to above-described embodiment, it is preferable that be equipped with monodirectional locking structure 16, locking direction edge between lock ring 4 and central tube 1
The axial direction of central tube 1 and far from 9 direction of guide shoe, power suffered by bridge plug all acts on upper slips in fracturing process
3 and lower slips 8 on, the stress of central tube 1 can be reduced, bridge plug main body is played a certain protective role.
According to above-described embodiment, it is preferable that 1 front of central tube is equipped with non-return shelves pin 17, and setting non-return backing pin 17 is a kind of
The frame mode of cage with tool lower going-into-well bottom, does not need later period pitching, this non-return be exactly pressure break ball can first carry out preset
The installation of the backing pin property of can choose.
According to above-described embodiment, it is preferable that offer multiple strip grooves 18 in bridge plug main body, hydrotropy block 10 is located at bar shaped
In groove 18, hydrotropy block 10 is fixedly connected with strip groove 18, since the structure size of bridge plug main body requires strictly, in bridge
Strip groove 18 is opened up in plug main body, can more be bonded the requirement of site operation.
According to above-described embodiment, it is preferable that hydrotropy block 10 includes iron chloride and potassium chloride, and hydrotropy block 10 is in subsurface environment
Middle slow release effective component, can effectively increase the concentration of medium reactant and ion at bridge plug position.
The beneficial effects of the present invention are: the present embodiment is in use, setting tool pushes lead ring to move to the right, lead ring is pushed
Upper slips and upper centrum move to the right, while upper centrum pushes lock ring to move right, centrum and lock ring retaining, and pull-up
Ring is derived under central tube, upper centrum and hypocentrum squeeze three packing element mechanisms respectively, and three packing element mechanisms are closely pasted with internal surface of sleeve pipe
It closes, while upper slips and lower slips are embedded in internal surface of sleeve pipe, to complete to set process；When pressure break process carries out, hydrotropy mechanism
There are protective layers on surface layer, can guarantee going on smoothly for pressure break process；After the completion of pressure break process, since protective layer is destroyed,
So that hydrotropy block is gradually contacted with the liquid environment of high temperature and pressure, dissolve rapidly, the lysigenous cosolvent of hydrotropy block and bridge plug
Electrochemical reaction occurs for main body, realizes the quick dissolution of bridge plug main body, to realize the solution rate of effectively control bridge plug.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of solvable bridge plug, which is characterized in that including bridge plug main body and the hydrotropy mechanism being fixedly connected with bridge plug main body, institute
Stating bridge plug main body includes central tube, and the bridge plug main body further includes the lead ring being successively from left to right socketed on central tube, upper card
Watt, lock ring, upper centrum, three packing element mechanisms, hypocentrum, lower slips and guide shoe, the lead ring, upper slips, lock ring, upper centrum,
Three packing element mechanisms, hypocentrum and lower slips are slidably connected with central tube respectively, and the guide shoe is fixedly connected with center tube end,
Upper slips lower part is inserted into described upper centrum one end, and lower slips lower part is inserted into described hypocentrum one end, and the hydrotropy mechanism includes more
A hydrotropy block being fixedly connected with bridge plug body outer surface.
2. a kind of solvable bridge plug according to claim 1, which is characterized in that three packing element mechanism includes seal assembly glue
Cylinder, holds and stays ring and cylinder spacer ring two metal coating rings, and the metal coating ring is connected with seal assembly packing element both ends respectively
It connects, described hold stays ring to be located in the middle part of seal assembly packing element, and the cylinder spacer ring is located at seal assembly packing element inner right side, and described hold is stayed
Ring and cylinder spacer ring are fitted closely with seal assembly packing element inner wall.
3. a kind of solvable bridge plug according to claim 2, which is characterized in that the seal assembly packing element uses can sol rubber
It is made.
4. a kind of solvable bridge plug according to claim 1, which is characterized in that the upper slips and lower slips surface loop around
It is fixedly connected with multiple slips grains.
5. a kind of solvable bridge plug according to claim 4, which is characterized in that the lead ring, upper slips, lock ring, upper centrum,
Hypocentrum and lower slips are all made of magnesium alloy materials and are made.
6. a kind of solvable bridge plug according to claim 1, which is characterized in that be equipped with one-way lock between the lock ring and central tube
Determine structure.
7. a kind of solvable bridge plug according to claim 1, which is characterized in that the central tube front is equipped with non-return shelves pin.
8. a kind of solvable bridge plug according to claim 1, which is characterized in that offer multiple bar shapeds in the bridge plug main body
Groove, the hydrotropy block are located in the strip groove, and the hydrotropy block is fixedly connected with strip groove.
9. a kind of solvable bridge plug according to claim 8, which is characterized in that the hydrotropy block includes iron chloride and chlorination
Potassium, hydrotropy block slow release effective component in subsurface environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341532.4A CN109899028A (en) | 2019-04-26 | 2019-04-26 | A kind of solvable bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341532.4A CN109899028A (en) | 2019-04-26 | 2019-04-26 | A kind of solvable bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109899028A true CN109899028A (en) | 2019-06-18 |
Family
ID=66956290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910341532.4A Pending CN109899028A (en) | 2019-04-26 | 2019-04-26 | A kind of solvable bridge plug |
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| Country | Link |
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| CN (1) | CN109899028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622866A (en) * | 2020-05-06 | 2021-11-09 | 中国石油天然气股份有限公司 | Controllable full-degradable bridge plug |
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| 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 |
| CN204782920U (en) * | 2015-07-20 | 2015-11-18 | 中国石油集团渤海钻探工程有限公司 | Rapid degradation is center tube for bridging plug |
| CN105064953A (en) * | 2015-07-20 | 2015-11-18 | 中国石油集团渤海钻探工程有限公司 | Rapidly degradable bridge plug with degradation-promoting central pipe |
| WO2016003759A1 (en) * | 2014-07-01 | 2016-01-07 | Magnum Oil Tools International, Ltd. | Dissolvable aluminum downhole plug |
| US20180305997A1 (en) * | 2017-04-20 | 2018-10-25 | Aimin Chen | Central shaft for bridge plug, bridge plug and setting method for the same |
| CN208073423U (en) * | 2018-04-10 | 2018-11-09 | 重庆地质矿产研究院 | Single slip type soluble bridge plug |
| CN109236230A (en) * | 2018-11-28 | 2019-01-18 | 中国石油集团渤海钻探工程有限公司 | A kind of magnesium-base metal dissolvable bridge plug |
| CN109488251A (en) * | 2018-11-20 | 2019-03-19 | 中国石油天然气股份有限公司 | A kind of preset dissolving medium mechanism and application method |
| CN210087292U (en) * | 2019-04-26 | 2020-02-18 | 天津市玛特瑞科技有限公司 | Soluble bridge plug |
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2019
- 2019-04-26 CN CN201910341532.4A patent/CN109899028A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547766A (en) * | 2011-05-19 | 2014-01-29 | 贝克休斯公司 | Easy drill slip with degradable materials |
| WO2016003759A1 (en) * | 2014-07-01 | 2016-01-07 | Magnum Oil Tools International, Ltd. | Dissolvable aluminum downhole plug |
| 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 |
| CN204782920U (en) * | 2015-07-20 | 2015-11-18 | 中国石油集团渤海钻探工程有限公司 | Rapid degradation is center tube for bridging plug |
| CN105064953A (en) * | 2015-07-20 | 2015-11-18 | 中国石油集团渤海钻探工程有限公司 | Rapidly degradable bridge plug with degradation-promoting central pipe |
| US20180305997A1 (en) * | 2017-04-20 | 2018-10-25 | Aimin Chen | Central shaft for bridge plug, bridge plug and setting method for the same |
| CN208073423U (en) * | 2018-04-10 | 2018-11-09 | 重庆地质矿产研究院 | Single slip type soluble bridge plug |
| CN109488251A (en) * | 2018-11-20 | 2019-03-19 | 中国石油天然气股份有限公司 | A kind of preset dissolving medium mechanism and application method |
| CN109236230A (en) * | 2018-11-28 | 2019-01-18 | 中国石油集团渤海钻探工程有限公司 | A kind of magnesium-base metal dissolvable bridge plug |
| CN210087292U (en) * | 2019-04-26 | 2020-02-18 | 天津市玛特瑞科技有限公司 | Soluble bridge plug |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622866A (en) * | 2020-05-06 | 2021-11-09 | 中国石油天然气股份有限公司 | Controllable full-degradable bridge plug |
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