CN204492756U - For solvable ball seat and the pressure break ball of pitching sliding sleeve - Google Patents
For solvable ball seat and the pressure break ball of pitching sliding sleeve Download PDFInfo
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- CN204492756U CN204492756U CN201520100388.2U CN201520100388U CN204492756U CN 204492756 U CN204492756 U CN 204492756U CN 201520100388 U CN201520100388 U CN 201520100388U CN 204492756 U CN204492756 U CN 204492756U
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- ball seat
- oxide film
- pressure break
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Abstract
The utility model discloses a kind of solvable ball seat for pitching sliding sleeve and solvable pressure break ball, this solvable ball seat is made up of electrolytic metal material ball seat matrix and the oxide film being coated on ball seat matrix surface; The ball that solvable pressure break ball is made by electrolytic metal material is formed with the oxide film I being coated on its surface; Electrolytic metal material is Mg-Zn-Cu alloy, and oxide film and oxide film I are magnesium oxide layer or zinc oxide film.This is used for the solvable ball seat of pitching sliding sleeve and pressure break ball supports the use, can containing Cl
-solution in dissolve, after ball seat and pressure break ball dissolve, grind just achieve sliding sleeve big orifice without the need to carrying out brills to ball seat.
Description
Technical field
The utility model relates to Oil/gas Well multistage fracturing field, particularly a kind of solvable ball seat for pitching sliding sleeve and pressure break ball.
Background technology
In Oil/gas Well segmentation multistage fracturing technology, usually using high intensity low density pressure break ball to open pitching sliding sleeve and carry out pressure break, after pressure break completed product run a period of time, in order to improve output, needing to carry out secondary transformation to Oil/gas Well.Because latus rectum in ball seat and the pressure break ball size that matches increase step by step, by the impact of ball seat internal diameter, need to bore abrading-ball seat during secondary transformation, the material that ball seat adopts can be bored at present and be generally cast iron, bore that time consuming is grown, had a big risk, cost is high.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of solvable ball seat for pitching sliding sleeve and pressure break ball, and it can be dissolved in fracturing fluid or stratum liquid, realizes sliding sleeve and exempts to bore big orifice, be conducive to later stage operation.
For this reason, the technical solution of the utility model is as follows:
For a solvable ball seat for pitching sliding sleeve, be made up of electrolytic metal material ball seat matrix and the oxide film being coated on described ball seat matrix surface; Described electrolytic metal material is Mg-Zn-Cu alloy; Described oxide film is magnesium oxide layer or zinc oxide film.In described Mg-Zn-Cu alloy, the mass content of each composition is respectively Mg70%-85%, Zn4%-9.5%, Cu1%-12.7%, the rare earth element in addition containing 0-6%, preferred Ce, Zr.As without special statement, Mg-Zn-Cu alloy material all for this reason in the application.
Preferably, described solvable ball seat comprises three sections that connect as one successively, and first paragraph is up big and down small tapered cylinder; Second segment is cylindrical drum, and the 3rd section is up-small and down-big tapered cylinder.
A solvable pressure break ball matching used with above-mentioned solvable ball seat, the ball made by electrolytic metal material is formed with the oxide film I being coated on its surface; Described electrolytic metal material is Mg-Zn-Cu alloy; Described oxide film is magnesium oxide layer or zinc oxide film.
A solvable pressure break ball matching used with above-mentioned solvable ball seat, the ball made by electrolytic metal material is formed with the oxide film I being coated on its surface; Described electrolytic metal material is Mg-Zn-Cu alloy; Described oxide film is magnesium oxide layer or zinc oxide film; The diameter of described solvable pressure break ball is greater than the diameter of described solvable ball seat second segment.
This is used for the solvable ball seat of pitching sliding sleeve and pressure break ball supports the use, can containing Cl
-solution in dissolve, after ball seat and pressure break ball dissolve, grind just achieve sliding sleeve big orifice without the need to carrying out brills to ball seat.
Accompanying drawing explanation
Fig. 1 is the structural representation of solvable ball seat;
Fig. 2 is the structural representation of solvable pressure break ball.
Detailed description of the invention
Below in conjunction with detailed description of the invention, structure of the present utility model is described in detail.
As shown in Figure 1, a kind of solvable ball seat for pitching sliding sleeve, is made up of electrolytic metal material ball seat matrix 1 and the oxide film 2 being coated on described ball seat matrix 1 surface; Described electrolytic metal material is Mg-Zn-Cu alloy; Described oxide film 2 is magnesium oxide layer or zinc oxide film.In described Mg-Zn-Cu alloy, the mass content of each composition is respectively Mg70%-85%, Zn4%-9.5%, Cu1%-12.7%, the rare earth element in addition containing 0-6%, preferred Ce, Zr.
As shown in Figure 2, the matching used solvable pressure break ball of a kind of and above-mentioned solvable ball seat, the ball 3 made by electrolytic metal material and the oxide film I 4 being coated on its surface are formed; Described electrolytic metal material is Mg-Zn-Cu alloy; Described oxide film I 4 is magnesium oxide layer or zinc oxide film.
In an embodiment of the present utility model, solvable ball seat is made up of electrolytic metal material ball seat matrix 1 and the oxide film 2 being coated on its surface; Electrolytic metal material is Mg-Zn-Cu alloy; Oxide film 2 is magnesium oxide layer or zinc oxide film; This ball seat matrix 1 is three sections that connect as one successively, and first paragraph is up big and down small tapered cylinder; Second segment is cylindrical drum, and the 3rd section is up-small and down-big tapered cylinder.The diameter of solvable ball seat second segment is greater than with the diameter of the matching used solvable pressure break ball of this solvable ball seat; The ball 3 that this pressure break ball is made by electrolytic metal material and the oxide film I 4 being coated on its surface are formed; Electrolytic metal material is Mg-Zn-Cu alloy; Oxide film I 4 is magnesium oxide layer or zinc oxide film.
This solvable ball seat/solvable pressure break ball utilizes Mg-Zn-Cu alloy to be processed into ball seat/pressure break ball as base material, then adopts the method such as chemical vapour deposition (CVD) or differential arc oxidation to generate magnesium oxide layer or the zinc oxide film of different-thickness by work different time on ball seat/ball surface.
During use, solvable ball seat is arranged in pitching sliding sleeve, also lower to precalculated position by working design connection segment fracturing string; During pressure break, drop into solvable pressure break ball from well head, solvable pressure break ball sealing is on solvable ball seat, and in a kind of concrete structure of the present utility model, solvable pressure break ball sealing is to the second segment place of solvable ball seat, suppress, when pressure reaches sliding sleeve setting unlatching value, shear pin is cut off, valve open, carry out oil pipe pressure break, after pressure break terminates, return discharge fracturing fluid, ask product.Along with the carrying out of pressure break, solvable ball seat and solvable pressure break ball slowly dissolve in fracturing fluid, and after skin covering of the surface dissolves completely, its matrix material starts rapid solution, until ball seat and pressure break ball disappear completely, thus realize sliding sleeve big orifice.
This solvable ball seat/solvable pressure break ball can bear high pressure when pressure break, can at down-hole automatic dissolving after pressure, and just can carry out the subsequent jobs such as secondary transformation without the need to boring mill, risk is little, cost-saving.
Claims (4)
1., for a solvable ball seat for pitching sliding sleeve, it is characterized in that: by electrolytic metal material ball seat matrix (1) and be coated on described ball seat matrix (1) surface oxide film (2) form; Described electrolytic metal material is Mg-Zn-Cu alloy; Described oxide film (2) is magnesium oxide layer or zinc oxide film.
2. as claimed in claim 1 for the solvable ball seat of pitching sliding sleeve, it is characterized in that: described solvable ball seat comprises three sections that connect as one successively, first paragraph is up big and down small tapered cylinder; Second segment is cylindrical drum, and the 3rd section is up-small and down-big tapered cylinder.
3., with the matching used solvable pressure break ball of solvable ball seat as claimed in claim 1, it is characterized in that: the ball (3) made by electrolytic metal material and the oxide film I (4) being coated on its surface are formed; Described electrolytic metal material is Mg-Zn-Cu alloy; Described oxide film I (4) is magnesium oxide layer or zinc oxide film.
4., with the matching used solvable pressure break ball of solvable ball seat as claimed in claim 2, it is characterized in that: the ball (3) made by electrolytic metal material and the oxide film I (4) being coated on its surface are formed; Described electrolytic metal material is Mg-Zn-Cu alloy; Described oxide film I (4) is magnesium oxide layer or zinc oxide film; The diameter of described solvable pressure break ball is greater than the diameter of described solvable ball seat second segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520100388.2U CN204492756U (en) | 2015-02-12 | 2015-02-12 | For solvable ball seat and the pressure break ball of pitching sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520100388.2U CN204492756U (en) | 2015-02-12 | 2015-02-12 | For solvable ball seat and the pressure break ball of pitching sliding sleeve |
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| CN204492756U true CN204492756U (en) | 2015-07-22 |
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| CN201520100388.2U Active CN204492756U (en) | 2015-02-12 | 2015-02-12 | For solvable ball seat and the pressure break ball of pitching sliding sleeve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481303A (en) * | 2016-11-07 | 2017-03-08 | 西南石油大学 | A kind of pressure break dissolves ball sealer with controllable |
| CN106978999A (en) * | 2017-04-18 | 2017-07-25 | 山西晋城无烟煤矿业集团有限责任公司 | Ball-throwing type high energy gas fracturing device |
| CN107013186A (en) * | 2017-05-02 | 2017-08-04 | 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 multistage slide bushing assembly of cluster formula and segmentation measure tubing string |
| CN107699838A (en) * | 2017-09-29 | 2018-02-16 | 中国石油集团渤海钻探工程有限公司 | A kind of staged fracturing biodegradable coating ball seat and preparation method thereof |
| CN108952623A (en) * | 2018-08-12 | 2018-12-07 | 张馨月 | A kind of isodensity tune blocks up ball delivery device and method |
-
2015
- 2015-02-12 CN CN201520100388.2U patent/CN204492756U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481303A (en) * | 2016-11-07 | 2017-03-08 | 西南石油大学 | A kind of pressure break dissolves ball sealer with controllable |
| CN106481303B (en) * | 2016-11-07 | 2019-06-04 | 西南石油大学 | A kind of controllable dissolution ball sealer of pressure break |
| CN106978999A (en) * | 2017-04-18 | 2017-07-25 | 山西晋城无烟煤矿业集团有限责任公司 | Ball-throwing type high energy gas fracturing device |
| CN107013186A (en) * | 2017-05-02 | 2017-08-04 | 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 multistage slide bushing assembly of cluster formula and segmentation measure tubing string |
| CN107699838A (en) * | 2017-09-29 | 2018-02-16 | 中国石油集团渤海钻探工程有限公司 | A kind of staged fracturing biodegradable coating ball seat and preparation method thereof |
| CN108952623A (en) * | 2018-08-12 | 2018-12-07 | 张馨月 | A kind of isodensity tune blocks up ball delivery device and method |
| CN108952623B (en) * | 2018-08-12 | 2020-09-11 | 张馨月 | Equal-density plugging ball delivery device and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210201 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106, Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |