发明名称 |
Well conduit sealant and placement method |
摘要 |
Gas leakage from oil wells through casing thread connections and other small leakage spaces is reduced or eliminated by injecting into the lift gas flowstream a sealant composition comprising a carrier liquid, such as diesel fuel or water, an ethoxylated phenol surfactant and particulate silica and/or Gilsonite. A liquid sealant composition is injected into oil wells on artificial gas lift comprising arctic diesel fuel, a surfactant and solubilized Gilsonite in a weight ratio of about 10:1 diesel fuel to Gilsonite and diesel fuel to surfactant, respectively. Effective reduction in leakage flow rates is obtained over a relatively short time period (one to ten hours).
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申请公布号 |
US5117909(A) |
申请公布日期 |
1992.06.02 |
申请号 |
US19900603571 |
申请日期 |
1990.10.25 |
申请人 |
ATLANTIC RICHFIELD COMPANY |
发明人 |
WILTON, BONSALL S.;BLOYS, J. BENJAMIN;BRADSHAW, ROGER D.;RIGGS, KENNETH R. |
分类号 |
C09K8/50;C09K8/502;C09K8/514;E21B29/00;E21B43/12;F02B3/06 |
主分类号 |
C09K8/50 |
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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