Water-soluble disintegration type pitching cage and preparation method thereof

A water-soluble collapsing and ball cage technology, which is applied in chemical instruments and methods, climate change adaptation, drilling compositions, etc., can solve the problem of affecting the effect of the plugging ball, the ball cannot be effectively sent to the vicinity of the blasthole, and water-soluble degradation Time is too fast and other problems, to achieve the effect of controllable disintegration time, good flexibility and good storage stability

Active Publication Date: 2020-08-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventionally used water-soluble polymer has too fast water-soluble degradation time. After it is prepared into the ball cage material of the plugging ball, it has not been sent to the vicinity of the blasthole, and the ball cage material is dissolved, resulting in the blocking ball being ineffective. Sent to the vicinity of the blast hole, seriously affecting the effect of the plugging adjustment ball

Method used

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  • Water-soluble disintegration type pitching cage and preparation method thereof
  • Water-soluble disintegration type pitching cage and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The composition of the water-soluble disintegrating pitching cage is as follows: sodium acrylate 4%, lauroyl peroxide 0.5%, triglyceryl monostearate 0.4%, dibutyltin dilaurate 0.1%, sodium persulfate 0.3%, styrene 6% , 0.5% dicumyl peroxide, 0.5% divinylbenzene, 2.5% butanol, 9% vinyl acetate, 1% sodium hydroxide, and the rest is deionized water, totaling 100%.

Embodiment 2

[0053]The composition of the water-soluble disintegrating pitching cage is as follows: sodium acrylate 6%, lauroyl peroxide 0.8%, triglyceryl monostearate 0.8%, dibutyltin dilaurate 0.3%, sodium persulfate 1%, styrene 9% , 1% dicumyl peroxide, 0.9% divinylbenzene, 3.5% butanol, 12% vinyl acetate, 2% sodium hydroxide, and the rest is deionized water, totaling 100%.

Embodiment 3

[0055] The composition of the water-soluble disintegrating pitching cage is as follows: sodium acrylate 5%, lauroyl peroxide 0.6%, triglyceryl monostearate 0.6%, dibutyltin dilaurate 0.2%, sodium persulfate 0.5%, styrene 8% , 0.8% dicumyl peroxide, 0.7% divinylbenzene, 3% butanol, 11% vinyl acetate, 1.5% sodium hydroxide, and the rest is deionized water, totaling 100%.

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Abstract

The invention discloses a water-soluble disintegration type pitching cage and a preparation method thereof. The pitching cage is composed of sodium acrylate, lauroyl peroxide, tripolyglycerol monostearate, dibutyltin dilaurate, sodium persulfate, styrene, dicumyl peroxide, divinyl benzene, butanol, vinyl acetate, sodium hydroxide and deionized water. The hydrophilic and hydrophobic mixed monomersare polymerized into a water-soluble disintegration type composite material, the water-soluble disintegration time of the prepared composite material is controllable, the flexibility is high, the storage stability is good, and the requirements of on-site profile control of an oil field can be fully met.

Description

technical field [0001] The invention relates to the technical field of oil recovery and gas recovery engineering in the petroleum industry, in particular to a water-soluble disintegrating pitching cage and a preparation method thereof. Background technique [0002] The ball-throwing profile control technology is a low-cost technology developed for the uneven water absorption profile of water injection wells and the high cost of conventional injection and chemical flooding profile control measures. Ball plugging, under the action of dynamic flow of injected water, the plugging ball will preferentially reach the vicinity of the blasthole in the high water-absorbing layer, and block the blasthole under the action of water injection pressure difference, thereby changing the distribution between the injected water layers and reducing the water absorption of the main water-absorbing layer. [0003] The process operation of plugging adjusting balls entering the water injection pipe...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08F218/08C08F220/06C08F212/08C08F212/36C09K8/508C09K8/516
CPCC08F218/08C09K8/516C09K8/5083C08F220/06C08F212/08C08F212/36Y02A40/81
Inventor钱志鸿崔永亮李升芳杲春袁玉峰邓秀模
OwnerCHINA PETROLEUM & CHEM CORP