发明名称 |
TECHNIQUE FOR INSULATING A WELLBORE WITH SILICATE FOAM |
摘要 |
<p>Disclosed herein is a method for thermally insulating a well. The well is insulated by boiling a solution containing silicate in contact with well tubing to form a coating of silicate on the tubing. A fluid substantially free of silicate also contacts the well tubing to buffer a lower portion of the tubing from the silicate solution, This substantially silicate-free fluid prevents silicate foam coating on the lower portion of the tubing and thus alleviates problems associated with having silicate foam coated thereon.</p> |
申请公布号 |
CA1059020(A) |
申请公布日期 |
1979.07.24 |
申请号 |
CA19770272954 |
申请日期 |
1977.03.01 |
申请人 |
EXXON PRODUCTION RESEARCH COMPANY |
发明人 |
PUJOL, LUIS |
分类号 |
E21B36/00;(IPC1-7):21B43/24 |
主分类号 |
E21B36/00 |
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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