发明名称 |
GEL, LEAKING STOPPAGE METHOD USING THE SAME, AND WELL KILL LEAKING STOPPAGE METHOD USING THE SAME |
摘要 |
The present invention relates to the field of well drilling, and particularly to a gel, a plugging method using the same, and a well killing and plugging method using the same. The gel is a water soluble hydrophobic associated polymer copolymerized by hydrophobic monomer and nonionic monomer, or a water soluble hydrophobic associated polymer copolymerized by hydrophobic monomer, nonionic monomer, and alkene salt monomer. The copolymerization method thereof may be a copolymerization post-hydrolysis method or a copolymerization co-hydrolysis method. The leaking stoppage method using the gel comprises: adding 8-18g of gel to 1kg of water, and feeding the mixture to a leakage layer; and then feeding a spacer fluid. Based on the plugging method using the gel, the well killing and plugging method using the gel further comprises: feeding heavy mud to a well to kill the well cyclically. The present invention provides a gel, which has better pressure resisting performance compared with existing plugging materials, and can be used to solve cave-type vicious well leakage caused by formation fractures, and blowout of a high-pressure gas layer and leakage of a leakage layer that occur in a same well bore. |
申请公布号 |
EP2876119(A4) |
申请公布日期 |
2016.01.20 |
申请号 |
EP20140803882 |
申请日期 |
2014.03.08 |
申请人 |
SOUTHWEST PETROLEUM UNIVERSITY |
发明人 |
LUO, PINGYA;GUO, YONGJUN;WANG, PINGQUAN;ZHANG, XINMIN;FENG, RUSEN |
分类号 |
C08F220/56;C08F220/06;C08F220/54;C08F226/02;C08F228/02;C09K8/42;C09K8/44;C09K8/508 |
主分类号 |
C08F220/56 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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