A water-soluble disintegrating pitching cage and its preparation method

A water-soluble collapsing and ball cage technology, which is applied in chemical instruments and methods, drilling compositions, climate change adaptation, etc. To the problem near the blasthole, etc.

Active Publication Date: 2022-05-20
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A water-soluble disintegrating pitching cage and its preparation method
  • A water-soluble disintegrating pitching cage and its preparation method

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%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a water-soluble disintegrating 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, divinylbenzene, butanol, vinyl acetate, sodium hydroxide, deionized water. The invention polymerizes hydrophilic and hydrophobic mixed monomers into a water-soluble disintegrating composite material, and the prepared composite material has adjustable water-soluble disintegration time, good flexibility and good storage stability, and can fully meet the requirements of on-site profile control in oil fields.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(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