CN106481303B - A controllable dissolution plugging ball for fracturing - Google Patents
A controllable dissolution plugging ball for fracturing Download PDFInfo
- Publication number
- CN106481303B CN106481303B CN201610970377.9A CN201610970377A CN106481303B CN 106481303 B CN106481303 B CN 106481303B CN 201610970377 A CN201610970377 A CN 201610970377A CN 106481303 B CN106481303 B CN 106481303B
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- Prior art keywords
- controllable
- dissolve
- check valve
- metal
- dissolvable
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Classifications
-
- 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
- E21B33/12—Packers; Plugs
-
- 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
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
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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)
- Check Valves (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of controllable dissolution ball sealers of pressure break, it includes: dissolvable metal cavity matrix, the dissolvable macromolecule layer of high temperature, controllable import check valve, controllable Outlet check valves, import check valve can dissolve metal threaded channel, Outlet check valves can dissolve metal threaded channel, can dissolve metal hydrops cavity, can dissolve metal outer groove.The present invention is by changing working environment pressure, reach the cracking pressure for opening controllable import and export check valve, it is connected to high and low pressure side, and the liquid flowed through makes controllable import check valve and controllable Outlet check valves itself fail, accelerate ball sealer dissolution, eventually leads to ball sealer and seal entirely ineffective and be dissolved in liquid.Operation of the present invention is simple, controllability is good, dissolution initial time can be opened on demand within a certain period of time according to corresponding dissolving method, due to not needing instead to arrange operation, simplify process, production cost is reduced, while can be by changing diameter to meet the requirement of different operating conditions.
Description
Technical field
The present invention relates to a kind of pressure break controllabilitys to dissolve ball sealer, in particular to one kind in oil-gas field development,
The ball sealer to build the pressure for temporary plugging.
Background technique
In oil/gas well development operation, underground fracture construction needs fracturing plugging ball to block horizontal well, and common
Ball sealer directly act on underground, it is carried out after the completion of construction bore split, perhaps it is counter be discharged well or using well liquid to pressure
It splits ball sealer to be dissolved, the process of these techniques is complex, and inefficiency, while molten to fracturing plugging ball using well liquid
In solution preocess, dissolution initial time is uncontrollable, cannot reach the requirement of control dissolution time started.Application No. is
201310202648.2 disclosing a kind of aluminum-based alloy material and preparation method thereof for being used to prepare disintegration pressure break ball, this pressure break
Ball just starts to dissolve when being put into corresponding dissolution liquid environment, thus cannot reach the flexibly control dissolution time started.Application number
For 201510405523.9 disclose it is a kind of for make drilling well bridge plug packing element from lysotype functional material and its preparation side
Method, although its course of dissolution length of time can control, when work is in dissolution liquid accordingly, sphere generates instead immediately
It answers, entire dissolution time is fixed, and the construction time suffers restraints, and cannot flexibly control the initial time to react.
Summary of the invention
In view of this, the present invention proposes a kind of controllable dissolution ball sealer of pressure break, lacked with solving the above-mentioned of the prior art
It falls into.
On the one hand, the present invention provides one kind, and there is controllability can dissolve ball sealer, comprising: can dissolve metal cavity base
It is solvable that body, high temperature can dissolve macromolecule layer, controllable import check valve, controllable Outlet check valves, inlet and outlet check valve
It solves metal threaded channel, can dissolve metal hydrops cavity, exterior channels.
More preferred, described matrix material is formed by can dissolve metal, but not limited to this.
More preferred, the outer layer is formed by can dissolve macromolecule layer, but not limited to this.
The dissolvable metal cavity matrix is solvable including internal dissolvable metal hydrops cavity, inlet and outlet check valve
Metal threaded channel and exterior channels are solved, the dissolvable metal hydrops cavity can dissolve with the external world by inlet and outlet check valve
Metal threaded channel connection.
Described can control can dissolve metal threaded channel into (out) mouth check valve and inlet and outlet check valve and pass through screw thread
Connection.
It is corresponding with the hole of macromolecule layer and whole right that the inlet and outlet check valve can dissolve metal threaded channel
Claim distribution.
The controllable import check valve, controllable Outlet check valves and inlet and outlet check valve can dissolve metal threaded
The corresponding distribution of hole, and same direction putting in order using one-in-and-one-out check valve, guarantee upstream and downstream have simultaneously into
(out) mouth check valve.
It all is mutually communicated between the dissolvable metal outer groove and into (out) mouth check valve side hole.
Described can control into (out) mouth check valve and high temperature can dissolve macromolecule layer in intersection sealing.
The controllable import check valve includes: screw thread shell, steel ball, spring, can dissolve metab.
The controllable Outlet check valves include: screw thread shell, steel ball, spring, can dissolve metab, polymer block edge
Caulking groove, macromolecule plugging block.
The controllable import check valve, the dissolvable pedestal of controllable Outlet check valves and screw thread shell carry out screw thread company
It connects, there is Hexagon hole among pedestal, by turning pedestal to the spring of controllable import check valve, controllable Outlet check valves
Apply the degree that pretightning force reaches suitable operating condition.
The macromolecule embedding groove is threadedly coupled with the screw thread shell of controllable Outlet check valves, macromolecule embedding groove
There is Hexagon hole at center, by turning arrival suitable position, cooperates the closure of macromolecule plugging block.
Size by controlling the pressure of underground achievees the purpose that open check valve, to open dissolution initial time and add
Fast rate of dissolution.
Beneficial effects of the present invention: the present invention proposes a kind of controllable dissolution ball sealer of pressure break, it into (out) mouth list
To valve on-off by the control of ambient pressure, started by temporarily increasing the dissolution of controllable dissolution ball sealer of opened by pressure pressure break
Time；Compared with prior art, there is the spy for requiring that dissolution initial time can be opened at any time according to technique within a certain period of time
Point just dissolves in corresponding lysate immediately without similar other ball sealers, and leads to the shortcomings that constraining the process time.
Detailed description of the invention
It constitutes part of this application attached drawing to be used to provide further understanding of the present invention, schematic implementation of the invention
Example and its explanation are used to explain the present invention, and are not constituted to improper restriction of the invention.
Fig. 1 is according to schematic cross-sectional view of the present invention；
Fig. 2 is import barrier check valve cross-sectional view；
Fig. 3 is control of export check valve cross-sectional view.
Appended drawing reference in figure: 1, can dissolve metal cavity matrix；2, high temperature can dissolve macromolecule layer；3, it can control import list
To valve；4, Outlet check valves be can control；5, import or export check valve can dissolve metal threaded channel；6, it can dissolve metal hydrops
Cavity；7, exterior channels；8, screw thread shell one；9, steel ball one；10, spring one；11, it can dissolve pedestal one；12, screw thread shell
Two；13, steel ball two；14, spring two；15, it can dissolve pedestal two；16, polymer block embedding groove；17, macromolecule plugging block；
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1, it includes that can dissolve gold the embodiment of the invention provides a kind of controllable dissolution ball sealer of pressure break
Belong to cavity matrix 1, high temperature can dissolve macromolecule layer 2, controllable import check valve 3, can control Outlet check valves 4, import and goes out
Mouth check valve can dissolve metal threaded channel 5, can dissolve metal hydrops cavity 6, exterior channels 7.
Can dissolve metal cavity matrix 1 includes: that inlet and outlet check valve can dissolve metal threaded channel 5, can dissolve gold
Belong to hydrops cavity 6, exterior channels 7.
It includes: that can dissolve the corresponding hole in metal threaded channel with inlet and outlet check valve that high temperature, which can dissolve macromolecule layer,
Hole.
As shown in Fig. 2, controllable import check valve includes: screw thread shell 1, steel ball 1, the default cavity in side, spring
One 10, it can dissolve pedestal 1.
As shown in figure 3, controllable Outlet check valves include: screw thread shell 2 12, steel ball 2 13, spring 2 14, can dissolve
Pedestal 2 15, polymer block embedding groove 16, macromolecule plugging block 17.
The fracturing plugging ball is in the case where the controllable pressure in the external world, when down-hole pressure is less than controllable import check valve
When 3 preset pressure, that is, meets fractured horizontal well operating condition and construct.When the external world needs to dissolve pressure break ball sealer, control pressure
Power is more than the preset pressure of controllable import check valve 3, and import check valve will be pressurized and open at this time, and the liquid of extraneous high pressure will
Enter from check valve steel ball 1, one of them can dissolve metal threaded logical by controllable import check valve 3 and import check valve
Road 5, which reaches, can dissolve metal hydrops cavity 6, and another part is then to reach exterior channels by the preset hole of import check valve side
7.It flows through controllable import check valve and can dissolve metal threaded channel 5 and reach the liquid that can dissolve inside metal hydrops cavity 6,
First is that the metal with cavity inside reacts, the second is reacting with dissolvable metab 1, make controllable import
The failure of check valve 3 no longer has the function of to blockade, and then ball sealer front end high side and inlet and outlet check valve is caused to can dissolve
Metal threaded channel 5, can dissolve metal hydrops cavity 6, exterior channels 7 completely through.Control environmental pressure, which reaches, controllably to be produced
When the preset pressure of mouth check valve 4, controllable Outlet check valves will be opened, since ball sealer front end high acts on so that sealing
Stifled polymer block 17 squeezes out, and can dissolve gas that the liquid in metal hydrops cavity 6, gas and reaction generate will be from controllable
Outlet check valves 4 flow out, and by can control the liquid of Outlet check valves that will react with dissolvable pedestal 2 15, pedestal is broken
After breaking down, it can control Outlet check valves 4 that will fail, high-pressure side and low-pressure side are completely through the flow velocity of liquid will be accelerated, solvable
The liquid solved in metal hydrops cavity 6 increases, and the metal concentration dissolved reduces, and further speeds up the dissolution of dissolvable metal,
Achieve the purpose that accelerate ball sealer solution rate.
Wherein flow through exterior channels 7 liquid and matrix outer can dissolve metal react dissolution or generate gas cause
Outer layer macromolecule layer seal failure so that matrix surface be completely exposed in liquid, it is at this moment inside and outside to react simultaneously, increase greatly
Add reaction rate, accelerates dissolution.
Continue to refer to figure 1, Fig. 2 and Fig. 3, can control import check valve 3, controllable Outlet check valves 4 with screw thread with into
Mouth and Outlet check valves can dissolve metal threaded channel 5 and are connected through a screw thread；High temperature can dissolve macromolecule layer 2 in control dissolution
It is preceding that protection is sealed to dissolvable metal cavity matrix 1；Macromolecule plugging block 17 is adhered in polymer block embedding groove 16, is kept away
Exempt from downstream to reversely flow into fracturing plugging ball.
A kind of pressure break in normal operation, is controlled with controllable dissolution ball sealer by can control into (out) mouth check valve
It can dissolve the dissolution initial time of metal inside ball sealer.At the same time, high temperature can dissolve macromolecule layer 2 also very slowly molten
Solution, in normal operation, its main function are for being sealed to the dissolvable metal in inside.When ball sealer cannot normal work
When making, high temperature can dissolve macromolecule layer 2 will dissolve after long-time is impregnated in dissolution liquid, own failure, and then will
It can dissolve metal exposure in a liquid, ball sealer made to start dissolution with requirement of resuming work.
The above-described embodiments merely illustrate the principles and effects of the present invention, is not intended to restrict the invention, for this
For the technical staff in field, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc., should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of controllable dissolution ball sealer of pressure break, comprising: can dissolve metal cavity matrix (1), high temperature can dissolve macromolecule
Layer (2), controllable import check valve (3) and controllable Outlet check valves (4), it is characterized in that: the dissolvable metal cavity base
Body includes that import check valve can dissolve metal threaded channel, Outlet check valves can dissolve metal threaded channel, can dissolve metal product
Liquid air chamber (6) and exterior channels (7), wherein controllable import check valve and controllable Outlet check valves pass through inlet and outlet list
It can dissolve metal threaded channel to valve to connect with dissolvable metal cavity matrix screw thread, after connection, can dissolve metal hydrops cavity
It is temporarily not turned on the external world；The high temperature can dissolve macromolecule layer (2) be located at can dissolve metal cavity matrix outside, have with can
Inlet and outlet check valve in dissolution metal cavity matrix (1) can dissolve the corresponding hole in metal threaded channel, and its
It is right together with the controllable import check valve (3) and controllable Outlet check valves (4) that are connected on dissolvable metal cavity matrix
It can dissolve metal cavity matrix and carry out temporary sealing；The controllable import check valve (3) includes screw thread shell one (8), steel ball
One (9), spring one (10) and dissolvable metab one (11)；The controllable Outlet check valves (4) include screw thread shell two
(12), steel ball two (13), spring two (14), dissolvable metab two (15), polymer block embedding groove (16) and macromolecule envelope
Sprue (17), wherein can control the dissolvable metab one (11) of import check valve and can dissolve for controllable Outlet check valves
Metab two (15) is threadedly coupled with screw thread shell one (8) and screw thread shell two (12) respectively, and can be by the way that turn can
Dissolution metab one and dissolvable metab two apply suitable pretightning force to spring one and spring two, controllable to adjust
The cracking pressure of import check valve and controllable Outlet check valves.
2. the controllable dissolution ball sealer of a kind of pressure break according to claim 1, it is characterized in that: can dissolve metal cavity base
There is body (1) inlet and outlet check valve can dissolve metal threaded channel, can dissolve metal hydrops cavity (6) and exterior channels
(7), it is mutually passed through wherein can dissolve metal hydrops cavity (6) and can dissolve metal threaded channel by inlet and outlet check valve with the external world
It is logical, while the hole that can dissolve macromolecule layer (2) with high temperature matches；Controllable import check valve (3) and controllable outlet are single
It can dissolve metal threaded channel with inlet and outlet check valve respectively to valve (4) to match, use the symmetrical side of one-in-and-one-out
Method, so that there are controllable import check valve (3) and controllable Outlet check valves (4) in high and low pressure side simultaneously.
3. the controllable dissolution ball sealer of a kind of pressure break according to claim 1, it is characterized in that: screw thread shell one (8) side
Mask hole can reach exterior channels (7) by side hole by the liquid of steel ball one (9), while can pass through spring one
(10) reaching import check valve can dissolve metal threaded channel, and can then enter can dissolve metal hydrops cavity (6)；It can dissolve gold
Belong to pedestal one (11) to be connected through a screw thread with screw thread shell one (8), and can dissolve metab one (11) there is Hexagon hole,
By turning the pretightning force of Hexagon hole control spring one (10), to reach scheduled work pretightning force, when ambient pressure is more than
After predetermined pressure, liquid, which flows through steel ball one (9), and dissolvable metab one (11) reacts can destroy dissolvable metal
Pedestal one (11) makes controllable import check valve (3) failure；It can dissolve metab two (15) to pass through with screw thread shell two (12)
It is threadedly coupled, and can dissolve metab two (15) there is Hexagon hole, by turning Hexagon hole control spring two (14)
Pretightning force, to reach scheduled work pretightning force, meanwhile, polymer block embedding groove (16) and screw thread shell two (12) pass through spiral shell
Line connection, and there is Hexagon hole at polymer block embedding groove (16) center, reaches suitable position by turning to cooperate macromolecule
The closure of plugging block (17), after the pressure that can dissolve metal hydrops cavity (6) is more than predetermined pressure, liquid flows through steel ball two
(13) dissolvable metab two (15) can be destroyed by reacting with dissolvable metab two (15), keep controllable outlet single
It fails to valve (4), at this point, controllable import check valve (3) and controllable Outlet check valves (4) all fail, high and low pressure side is then complete
Full perforation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970377.9A CN106481303B (en) | 2016-11-07 | 2016-11-07 | A controllable dissolution plugging ball for fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970377.9A CN106481303B (en) | 2016-11-07 | 2016-11-07 | A controllable dissolution plugging ball for fracturing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106481303A CN106481303A (en) | 2017-03-08 |
| CN106481303B true CN106481303B (en) | 2019-06-04 |
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ID=58271648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610970377.9A Active CN106481303B (en) | 2016-11-07 | 2016-11-07 | A controllable dissolution plugging ball for fracturing |
Country Status (1)
| Country | Link |
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| CN (1) | CN106481303B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342879A (en) * | 2013-07-26 | 2013-10-09 | 四川川庆井下科技有限公司 | Degradable temporary plugging ball |
| CN104373101A (en) * | 2014-03-26 | 2015-02-25 | 中国石油集团渤海钻探工程有限公司 | Fracturing ball for oil-gas well fracturing process and preparation method thereof |
| CN204492756U (en) * | 2015-02-12 | 2015-07-22 | 中国石油集团渤海钻探工程有限公司 | For solvable ball seat and the pressure break ball of pitching sliding sleeve |
| CN204782968U (en) * | 2015-07-07 | 2015-11-18 | 吉林市旭峰激光科技有限责任公司 | Soluble alloy fracturing ball |
| 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 |
| CN105189918A (en) * | 2013-05-31 | 2015-12-23 | 株式会社吴羽 | Boring plug provided with mandrel formed from degradable material |
| CN105888638A (en) * | 2014-12-23 | 2016-08-24 | 陈爱民 | Timing sliding sleeve fracturing pipe column |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8631876B2 (en) * | 2011-04-28 | 2014-01-21 | Baker Hughes Incorporated | Method of making and using a functionally gradient composite tool |
-
2016
- 2016-11-07 CN CN201610970377.9A patent/CN106481303B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105189918A (en) * | 2013-05-31 | 2015-12-23 | 株式会社吴羽 | Boring plug provided with mandrel formed from degradable material |
| CN103342879A (en) * | 2013-07-26 | 2013-10-09 | 四川川庆井下科技有限公司 | Degradable temporary plugging ball |
| CN104373101A (en) * | 2014-03-26 | 2015-02-25 | 中国石油集团渤海钻探工程有限公司 | Fracturing ball for oil-gas well fracturing process and preparation method thereof |
| CN105888638A (en) * | 2014-12-23 | 2016-08-24 | 陈爱民 | Timing sliding sleeve fracturing pipe column |
| CN204492756U (en) * | 2015-02-12 | 2015-07-22 | 中国石油集团渤海钻探工程有限公司 | For solvable ball seat and the pressure break ball of pitching sliding sleeve |
| CN204782968U (en) * | 2015-07-07 | 2015-11-18 | 吉林市旭峰激光科技有限责任公司 | Soluble alloy fracturing ball |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN106481303A (en) | 2017-03-08 |
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Effective date of registration: 20200410 Address after: 457000 East 200m Road North, Wuyi Road and Civilization Road Intersection, Puyang City, Henan Province Patentee after: PUYANG HUARUITONG ENERGY ENGINEERING TECHNOLOGY Co.,Ltd. Address before: No. 8 Road, Xindu Xindu District of Chengdu city of Sichuan Province in 610500 Patentee before: SOUTHWEST PETROLEUM University |
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Address after: No. 08 East Road, 50 meters south of the intersection of Subei Road and Xindong Road, Puyang City, Henan Province, 457001 Patentee after: Henan Ruitong Energy Engineering Technology Co.,Ltd. Address before: 457000 North Road, 200m east of the intersection of Wuyi Road and Wenming Road, Puyang City, Henan Province Patentee before: PUYANG HUARUITONG ENERGY ENGINEERING TECHNOLOGY Co.,Ltd. |
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