Oil well sand flushing temporary plugging agent prepared from waste diapers and its preparation method and application

A technology of diapers and temporary plugging agent, which is applied in the field of oil well sand flushing temporary plugging agent and its preparation, which can solve the problems of sand flushing temporary plugging not mentioned in the product, achieve excellent temporary plugging performance, simple construction process, and easy operation Effect

Active Publication Date: 2016-06-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, none of the above studies mentioned the use of the product for sand flushing and temporary plugging

Method used

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  • Oil well sand flushing temporary plugging agent prepared from waste diapers and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0047] 1. To recycle waste diapers, peel off the outer fabric of waste diapers, take out the filler (high water-absorbing polyacrylic resin), dry them, pass through a 20-mesh sieve, and put them on a 20-mesh sieve for later use.

[0048] 2. Dissolve No. 58 industrial paraffin in odorless kerosene (No. 3 jet fuel) to prepare a solution with a mass concentration of 40%, spray evenly on the dried filling to form an industrial paraffin layer, and dry to form dispersed particles, such as figure 1 As shown, the thickness of the coated industrial paraffin layer is 0.1-1mm; the weight ratio of industrial paraffin to the dried filling is 1:8;

[0049] 3. According to the weight ratio of 1.5%, HPAM with a degree of hydrolysis of 18% and a molecular weight of 20 million can be obtained as a finished product.

[0050] 4. In a well in Huanxi Oilfield, due to formation leakage, repeated sand washing failed to achieve the expected effect, so this sand washing technology was used.

[0051] 5...

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Abstract

The invention relates to an oil sand-washing temporary plugging agent prepared from waste baby diapers, and a preparation method and application thereof. The oil sand-washing temporary plugging agent is prepared from waste baby diapers filler, wherein preferably, the waste baby diapers filler is polyacrylic resin. The oil sand-washing temporary plugging agent has the following advantages of low cost, and wide material source; and the obtained sand-washing temporary plugging agent is simple in construction technology, simple and convenient to operate, easy to degrade, multi-effect, environment-friendly and safe, and has excellent temporary plugging performance.

Description

technical field [0001] The invention relates to the petroleum field, in particular to an oil well sand flushing temporary plugging agent prepared from waste diapers, a preparation method and application thereof. Background technique [0002] In 2008, there were 345 manufacturers of diapers (pads or sheets) in China, and the output of diapers (pads or sheets) reached 10.49 billion pieces (China Anti-counterfeiting Report 2010.07P27). According to statistics, in the United States, an average of about 38,000 used "diapers" are discarded every minute. "Diapers" have become the third largest source of waste after newspapers and food and beverage packaging. Most of the diaper materials (superabsorbent resin) currently on the market cannot be biodegraded. According to the current landfill treatment method, it takes hundreds of years to rot. A baby needs an average of 3,600 diapers to wet before learning to "squat on the toilet" by himself. , under the historical conditions of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/50
Inventor 高玉军姜佳悦
Owner PETROCHINA CO LTD
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