发明名称 |
USE OF ELASTOMERS TO PRODUCE GELS FOR TREATING A WELLBORE |
摘要 |
A method of treating an earthen formation that includes introducing a first amount of a first blocked isocyanate in a liquid phase into the earthen formation; introducing a second amount of a second blocked isocyanate in a liquid phase into the earthen formation; the second blocked isocyanate group having a lower unblocking temperature than the first blocked isocyanate group; introducing at least one active hydrogen compound into the earthen formation; and contacting the first and second blocked isocyanates and the active hydrogen compound to form an elastomeric gel. The combination of two blocked isocyanates provides a synergistic effect so that the curing time can be optimised in a manner unexpected from the properties of the individual blocked isocyanates. |
申请公布号 |
EP2510068(B1) |
申请公布日期 |
2013.09.25 |
申请号 |
EP20100803471 |
申请日期 |
2010.12.13 |
申请人 |
M-I DRILLING FLUIDS UK LIMITED |
发明人 |
GERRARD, DONNA |
分类号 |
C09K3/22;C09K8/035;C09K8/512;C09K8/60;C09K17/30 |
主分类号 |
C09K3/22 |
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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