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
- Publication number
- 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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- Prior art keywords
- ball
- ball seat
- soluble
- fracturing
- oxide film
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007769 metal material Substances 0.000 claims abstract description 23
- 229910007565 Zn—Cu Inorganic materials 0.000 claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 15
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 description 4
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
本实用新型公开了一种用于投球滑套的可溶球座和可溶压裂球，此可溶球座由电解金属材料球座基体和包覆在球座基体表面的氧化膜构成；可溶压裂球由电解金属材料做成的球和包覆在其表面的氧化膜I构成；电解金属材料为Mg-Zn-Cu合金，氧化膜和氧化膜I均为氧化镁层或氧化锌层。该用于投球滑套的可溶球座和压裂球配套使用，可在含Cl-的溶液中溶解，当球座和压裂球溶解后，无需对球座进行钻磨便实现了滑套大通径。
The utility model discloses a soluble ball seat and a soluble fracturing ball used for a pitching sliding sleeve. The soluble ball seat is composed of an electrolytic metal material ball seat base body and an oxide film coated on the surface of the ball seat base body; The fracturing ball is composed of a ball made of electrolytic metal material and an oxide film I coated on its surface; the electrolytic metal material is Mg-Zn-Cu alloy, and the oxide film and oxide film I are both magnesium oxide layer or zinc oxide layer . The dissolvable ball seat and fracturing ball used for the pitching sliding sleeve are used together, and can be dissolved in a solution containing Cl- . When the ball seat and the fracturing ball are dissolved, the sliding sleeve can be realized without drilling and grinding the ball seat. large diameter.
Description
技术领域technical field
本实用新型涉及油气井多级压裂领域，特别是一种用于投球滑套的可溶球座和压裂球。The utility model relates to the field of multistage fracturing of oil and gas wells, in particular to a soluble ball seat and a fracturing ball used for a ball-throwing sliding sleeve.
背景技术Background technique
在油气井分段多级压裂技术中，通常使用高强低密度压裂球打开投球滑套进行压裂，压裂结束生产一段时间后，为了提高产量，需要对油气井进行二次改造。由于球座内通径和相匹配的压裂球尺寸逐级增加，受球座内径的影响，二次改造时需要钻磨球座，目前可钻球座采用的材料一般为铸铁，钻磨时间长、风险大、成本高。In the staged multi-stage fracturing technology of oil and gas wells, high-strength and low-density fracturing balls are usually used to open the ball sliding sleeve for fracturing. After the fracturing ends for a period of time, in order to increase the production, the oil and gas well needs to be restructured. Due to the gradual increase of the inner diameter of the ball seat and the size of the matching fracturing ball, affected by the inner diameter of the ball seat, the ball seat needs to be drilled and ground during the secondary reconstruction. Currently, the material used for the drillable ball seat is generally cast iron, and the drilling and grinding time long, risky, and costly.
发明内容Contents of the invention
为了解决上述技术问题，本实用新型提供一种用于投球滑套的可溶球座和压裂球，其能溶于压裂液或地层液体，实现滑套免钻大通径，有利于后期作业。In order to solve the above technical problems, the utility model provides a soluble ball seat and a fracturing ball for the ball-pitching sliding sleeve, which can be dissolved in the fracturing fluid or formation fluid, so that the sliding sleeve can avoid drilling and have a large diameter, which is beneficial to the later operation .
为此，本实用新型的技术方案如下：For this reason, the technical scheme of the utility model is as follows:
一种用于投球滑套的可溶球座，由电解金属材料球座基体和包覆在所述球座基体表面的氧化膜构成；所述电解金属材料为Mg-Zn-Cu合金；所述氧化膜为氧化镁层或氧化锌层。所述Mg-Zn-Cu合金中各成分的质量含量分别为Mg70％-85％，Zn4％-9.5％，Cu1％-12.7％，此外还含有0-6％的稀土元素，优选Ce，Zr。如无特殊表述，本申请中Mg-Zn-Cu合金均为此物质。A soluble ball seat for a ball-pitching sliding sleeve, which is composed of an electrolytic metal material ball seat base and an oxide film coated on the surface of the ball seat base; the electrolytic metal material is a Mg-Zn-Cu alloy; the The oxide film is a magnesium oxide layer or a zinc oxide layer. The mass content of each component in the Mg-Zn-Cu alloy is Mg70%-85%, Zn4%-9.5%, Cu1%-12.7%, and also contains 0-6% rare earth elements, preferably Ce, Zr. Unless otherwise specified, the Mg-Zn-Cu alloy in this application refers to this substance.
优选，所述可溶球座包括依次连接为一体的三段，第一段为上大下小的锥形圆筒；第二段为圆柱筒，第三段为上小下大的锥形圆筒。Preferably, the soluble ball seat includes three sections that are sequentially connected as one. The first section is a conical cylinder with a large upper part and a smaller bottom part; cylinder.
一种与上述可溶球座配套使用的可溶压裂球，由电解金属材料做成的球和包覆在其表面的氧化膜I构成；所述电解金属材料为Mg-Zn-Cu合金；所述氧化膜为氧化镁层或氧化锌层。A soluble fracturing ball used in conjunction with the above-mentioned soluble ball seat, which is composed of a ball made of electrolytic metal material and an oxide film I coated on its surface; the electrolytic metal material is a Mg-Zn-Cu alloy; The oxide film is a magnesium oxide layer or a zinc oxide layer.
一种与上述可溶球座配套使用的可溶压裂球，由电解金属材料做成的球和包覆在其表面的氧化膜I构成；所述电解金属材料为Mg-Zn-Cu合金；所述氧化膜为氧化镁层或氧化锌层；所述可溶压裂球的直径大于所述可溶球座第二段的直径。A soluble fracturing ball used in conjunction with the above-mentioned soluble ball seat, which is composed of a ball made of electrolytic metal material and an oxide film I coated on its surface; the electrolytic metal material is a Mg-Zn-Cu alloy; The oxide film is a magnesium oxide layer or a zinc oxide layer; the diameter of the soluble fracturing ball is larger than the diameter of the second section of the soluble ball seat.
该用于投球滑套的可溶球座和压裂球配套使用，可在含Cl-的溶液中溶解，当球座和压裂球溶解后，无需对球座进行钻磨便实现了滑套大通径。The dissolvable ball seat and fracturing ball used for the pitching sliding sleeve are used together, and can be dissolved in a solution containing Cl- . When the ball seat and the fracturing ball are dissolved, the sliding sleeve can be realized without drilling and grinding the ball seat. large diameter.
附图说明Description of drawings
图1为可溶球座的结构示意图；Fig. 1 is the structural representation of soluble ball seat;
图2为可溶压裂球的结构示意图。Figure 2 is a schematic diagram of the structure of a soluble fracturing ball.
具体实施方式Detailed ways
以下结合具体实施方式对本实用新型的结构进行详细描述。The structure of the present utility model is described in detail below in conjunction with specific embodiments.
如图1所示，一种用于投球滑套的可溶球座，由电解金属材料球座基体1和包覆在所述球座基体1表面的氧化膜2构成；所述电解金属材料为Mg-Zn-Cu合金；所述氧化膜2为氧化镁层或氧化锌层。所述Mg-Zn-Cu合金中各成分的质量含量分别为Mg70％-85％，Zn4％-9.5％，Cu1％-12.7％，此外还含有0-6％的稀土元素，优选Ce，Zr。As shown in Figure 1, a kind of soluble ball seat that is used for pitching sliding sleeve is made of electrolytic metal material ball seat base 1 and oxide film 2 coated on the surface of said ball seat base 1; said electrolytic metal material is Mg-Zn-Cu alloy; the oxide film 2 is a magnesium oxide layer or a zinc oxide layer. The mass content of each component in the Mg-Zn-Cu alloy is Mg70%-85%, Zn4%-9.5%, Cu1%-12.7%, and also contains 0-6% rare earth elements, preferably Ce, Zr.
如图2所示，一种与上述可溶球座配套使用的可溶压裂球，由电解金属材料做成的球3和包覆在其表面的氧化膜I 4构成；所述电解金属材料为Mg-Zn-Cu合金；所述氧化膜I 4为氧化镁层或氧化锌层。As shown in Figure 2, a soluble fracturing ball used in conjunction with the above-mentioned soluble ball seat is composed of a ball 3 made of electrolytic metal material and an oxide film 14 coated on its surface; the electrolytic metal material It is a Mg-Zn-Cu alloy; the oxide film I is a magnesium oxide layer or a zinc oxide layer.
在本实用新型的一个实施例中，可溶球座由电解金属材料球座基体1和包覆在其表面的氧化膜2构成；电解金属材料为Mg-Zn-Cu合金；氧化膜2为氧化镁层或氧化锌层；该球座基体1为依次连接为一体的三段，第一段为上大下小的锥形圆筒；第二段为圆柱筒，第三段为上小下大的锥形圆筒。与该可溶球座配套使用的可溶压裂球的直径大于可溶球座第二段的直径；此压裂球由电解金属材料做成的球3和包覆在其表面的氧化膜I 4构成；电解金属材料为Mg-Zn-Cu合金；氧化膜I 4为氧化镁层或氧化锌层。In one embodiment of the present invention, the soluble ball seat is composed of an electrolytic metal material ball seat base 1 and an oxide film 2 coated on its surface; the electrolytic metal material is a Mg-Zn-Cu alloy; the oxide film 2 is an oxide film Magnesium layer or zinc oxide layer; the ball seat base 1 is three sections connected in sequence, the first section is a conical cylinder with a large upper part and a smaller bottom part; conical cylinder. The diameter of the soluble fracturing ball used in conjunction with the soluble ball seat is greater than the diameter of the second section of the soluble ball seat; the fracturing ball is made of a ball 3 made of electrolytic metal material and an oxide film I coated on its surface 4 composition; the electrolytic metal material is Mg-Zn-Cu alloy; the oxide film I 4 is a magnesium oxide layer or a zinc oxide layer.
该可溶球座/可溶压裂球是利用Mg-Zn-Cu合金作为基材加工成球座/压裂球，然后采用化学气相沉积或微弧氧化等方法在球座/球表面按工作不同时间生成不同厚度的氧化镁层或氧化锌层。The soluble ball seat/dissolvable fracturing ball is processed into a ball seat/fracturing ball by using Mg-Zn-Cu alloy as the base material, and then adopts methods such as chemical vapor deposition or micro-arc oxidation to work on the surface of the ball seat/ball Magnesium oxide layers or zinc oxide layers with different thicknesses are generated at different times.
使用时，将可溶球座安装在投球滑套内，按施工设计连接分段压裂管柱并下到预定位置；压裂时，从井口投入可溶压裂球，可溶压裂球封到可溶球座上，在本实用新型的一种具体结构中可溶压裂球封到可溶球座的第二段处，打压，当压力达到滑套设定开启值时，剪钉剪断，阀门打开，进行油管压裂，压裂结束后，返排压裂液，求产。随着压裂的进行，可溶球座和可溶压裂球在压裂液中缓慢溶解，当表面膜完全溶解掉以后，其基体材料开始快速溶解，直至球座和压裂球完全消失，从而实现滑套大通径。When in use, install the soluble ball seat in the ball sliding sleeve, connect the segmented fracturing string according to the construction design and lower it to the predetermined position; when fracturing, put the soluble fracturing ball from the wellhead, and the soluble fracturing ball seal On the soluble ball seat, in a specific structure of the utility model, the soluble fracturing ball is sealed to the second section of the soluble ball seat and pressed. When the pressure reaches the set opening value of the sliding sleeve, the shear nails are cut , the valve is opened for tubing fracturing, and after the fracturing is completed, the fracturing fluid is flowed back for production. As the fracturing progresses, the soluble ball seat and the soluble fracturing ball slowly dissolve in the fracturing fluid. When the surface film is completely dissolved, the matrix material begins to dissolve rapidly until the ball seat and the fracturing ball disappear completely. So as to realize the large diameter of the sliding sleeve.
这种可溶球座/可溶压裂球在压裂时可以承受高压，压后可在井下自动溶解，无需钻磨便可进行二次改造等后续作业，风险小，节约成本。This kind of soluble ball seat/soluble fracturing ball can withstand high pressure during fracturing, and can automatically dissolve downhole after fracturing, and can carry out follow-up operations such as secondary reconstruction without drilling and grinding, with low risk and cost savings.
Claims (4)
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| 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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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 not_active Expired - Lifetime
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 controllable dissolution plugging ball for fracturing |
| 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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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. |
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Granted publication date: 20150722 |
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