CN203066951U - Fracture ball sealer - Google Patents
Fracture ball sealer Download PDFInfo
- Publication number
- CN203066951U CN203066951U CN 201220002345 CN201220002345U CN203066951U CN 203066951 U CN203066951 U CN 203066951U CN 201220002345 CN201220002345 CN 201220002345 CN 201220002345 U CN201220002345 U CN 201220002345U CN 203066951 U CN203066951 U CN 203066951U
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- CN
- China
- Prior art keywords
- fracture
- ball sealer
- ball
- pressure break
- silicon carbide
- Prior art date
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Abstract
The utility model relates to a fracture ball sealer of open hole horizontal well packing and section. The fracture ball sealer is a silicon carbide ceramic round ball provided with a closed hole structure, and reinforced high-melting-point metal wires are distributed in the silicon carbide ceramic round ball. The fracture ball sealer is thrown in during fracture construction, a ball base matched with a through path is sealed and blocked, a corresponding sliding sleeve is opened, a gap on the sliding sleeve is exposed, and fracture is conducted on a well section between two packers. The fracture ball sealer is low in density and high in strength, pumping and flowback can be conducted easily, a plurality of classifications can be achieved in a limited through path range, fracture intervals are increased, and fracture effect is improved.
Description
Technical field
The utility model relates to the kit of open-hole horizontal well packing staged fracturing tubing string, belong to oil gas field horizontal open hole completions segmentation volume increase and transform downhole tool manufacturing technology field.
Background technology
The fracturing string that the downhole tool that open-hole horizontal well staged fracturing transformation is at present generally had an optimistic view of is made up of instruments such as packer, ball seat sliding sleeves.Well section in the middle of two packers is provided with the ball seat sliding sleeve, and the ball seat diameter has different size, matches with the pressure break ball sealer of corresponding size, ball seat in the middle of certain two packer is blocked up by the pressure break ball sealing, sliding sleeve will be opened, and expose eyelet, and fracturing fluid sees through eyelet to this interval pressure break.Because the pressure break ball needs fracturing fluid to send into the down-hole, after pressure break finished, all the pressure break ball was returned and is drained into ground, thus require pressure break ball low-density, preferably slightly than water heavy (as 1.2～1.4).In addition, the ball seat diameter dimension must be arranged in limited latus rectum, if require classification many, the difference of ball seat diameter dimension must be little, and this just requires the pressure break ball that high strength is arranged.But the pressure break ball that uses both at home and abroad all can not satisfy above-mentioned two requirements simultaneously at present.
The utility model content:
For solving the problems of the technologies described above, the utility model provides a kind of novel pressure break ball sealer, and this pressure break ball sealer is with low-density and high-intensity performance.
For achieving the above object, the utility model provides a kind of pressure break ball sealer for open-hole horizontal well packing staged fracturing, this pressure break ball sealer is the silicon carbide ceramics ball with hole-closing structure, is distributed with the refractory metal silk of reinforcement in the described silicon carbide ceramics ball.
According to design of the present utility model, the titanium silk that described refractory metal silk is 0.05 * 3mm.
The low-density that the utility model provides, high-intensity pressure break ball sealer, pumping and the row of returning can realize more classification in limited latus rectum scope easily, increase fractured interval, improve fracturing effect.
Carborundum, alumina, potassic feldspar, kaolin, swell soil are made into slurries by a certain percentage, with zirconia ball as abrasive material, defibrination in fiberizer adds the refractory metal silk to oven dry, obtains powder, sneaking into the resin microballon, behind the mixing, spray the sodium cellulose glycolate solution of aluminium dihydrogen phosphate, put into spherical grinding tool and suppress, oven dry obtains spherical biscuit again.Fire in the high temperature kiln more at last, obtain finished product.
Description of drawings:
Fig. 1 is the sectional view of the pressure break ball sealer of the utility model embodiment preparation.
The critical piece title
1. pressure break ball sealer
2. closed pore
The specific embodiment:
Press carborundum 48%, alumina 24%, potassic feldspar 14%, kaolin 8%, the ratio of swell soil 2% is mixed with slurry, and slurry concentration is 80%.Wherein carborundum is with w5(P50=3.26 μ m), with the titanium silk 4% of 0.05 * 3mm, dry powder process.Be 1 to 0.7 ratio in ceramic powder than resin, adding granularity is the polyvinyl resin of P50=1 μ m.Behind the mixing, spray sodium cellulose glycolate (viscosity 1000, the 2%) solution of aluminium dihydrogen phosphate, take advantage of compression moulding in the wet spherical grinding tool of packing into, dried 1 hour, and moved in the high temperature furnace then for 120 ℃, before 600 ℃, slowly heat up, control is at 2 °/min, at hot stage, for preventing subsiding, should be rapidly heated, 1430 ℃ of insulations 2 hours, cooling naturally obtained product--pressure break ball sealer 1.Wherein, adopt the resin micro mist as blowing promotor, form closed pore 2 when firing in pressure break ball sealer 1, structure as shown in Figure 1.
Claims (2)
1. a pressure break ball sealer that is used for open-hole horizontal well packing staged fracturing is characterized in that this pressure break ball sealer is the silicon carbide ceramics ball with hole-closing structure, is distributed with the refractory metal silk of reinforcement in the described silicon carbide ceramics ball.
2. pressure break ball sealer according to claim 1 is characterized in that, the titanium silk that described refractory metal silk is 0.05 * 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220002345 CN203066951U (en) | 2012-01-05 | 2012-01-05 | Fracture ball sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220002345 CN203066951U (en) | 2012-01-05 | 2012-01-05 | Fracture ball sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203066951U true CN203066951U (en) | 2013-07-17 |
Family
ID=48765761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220002345 Expired - Fee Related CN203066951U (en) | 2012-01-05 | 2012-01-05 | Fracture ball sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203066951U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695938A (en) * | 2013-12-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Mechanical plugging experimental device and method for plugging ball |
| WO2015134499A1 (en) * | 2014-03-03 | 2015-09-11 | Epstein Jeffrey Stephen | Ceramic isolation ball for fracturing subsurface geologic formations |
| CN105134155A (en) * | 2015-08-11 | 2015-12-09 | 苏州固韧纳米材料技术有限公司 | Fracturing ball of double-layer structure used for fracturing oil and gas well and preparation method thereof |
-
2012
- 2012-01-05 CN CN 201220002345 patent/CN203066951U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695938A (en) * | 2013-12-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Mechanical plugging experimental device and method for plugging ball |
| CN104695938B (en) * | 2013-12-06 | 2017-10-17 | 中国石油天然气股份有限公司 | Mechanical plugging experimental device and method for plugging ball |
| WO2015134499A1 (en) * | 2014-03-03 | 2015-09-11 | Epstein Jeffrey Stephen | Ceramic isolation ball for fracturing subsurface geologic formations |
| CN105134155A (en) * | 2015-08-11 | 2015-12-09 | 苏州固韧纳米材料技术有限公司 | Fracturing ball of double-layer structure used for fracturing oil and gas well and preparation method thereof |
| CN105134155B (en) * | 2015-08-11 | 2018-01-12 | 苏州固韧纳米材料技术有限公司 | Double-decker well fracturing pressure break ball and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20160105 |