Double-crosslinked thermal phase transition gel temporary plugging agent and application thereof

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United States of America

PATENT NO 12180409
SERIAL NO

18824209

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The present invention discloses a double-crosslinked thermal phase transition gel temporary plugging agent and an application thereof, and relates to the technical field of oil and gas field development. The gel temporary plugging agent comprises the following components in percentage by weight: 5.8-18.3% of acrylic acid, 2.8-6.5% of 2-acrylamide-2-methylpropanesulfonic acid, 2.8-7.0% of hydroxyethyl acrylate, 0.2-1.0% of a degradable crosslinking agent, 0.4-1.2% of borax or boric acid, 0.2-0.8% of a high-temperature initiator, 2.6-4.5% of palygorskite attapulgite, 1.5-3.1% of a urea-formaldehyde resin, and the balance of water, wherein the gel temporary plugging agent is formed by underground gelation. The gel temporary plugging agent is applied to oil and gas reservoirs with a temperature of 100-150° C., can automatically be subjected to gelation and degradation, and has a low filtration loss before gelation.

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Patent OwnerAddress
SOUTHWEST PETROLEUM UNIVERSITYNO 8 XINDU AVENUE XINDU DISTRICT CHENGDU SICHUAN 610000 CHENGDU CITY SICHUAN PROVINCE 610000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Yongming Chengdu, CN 52 101
Li, Zhenglan Chengdu, CN 4 0
Peng, Yu Chengdu, CN 71 237
Shi, Pengjun Chengdu, CN 6 4
Ye, Jiandu Chengdu, CN 3 0
Zhao, Jinzhou Chengdu, CN 26 29

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