发明名称 |
Method of inhibiting gravel pack and formation sandstone dissolution during steam injection |
摘要 |
A method of inhibiting dissolution of the gravel pack and/or erosion of the formation standstone in a well bore subject to water or steam injection. The method includes the addition of a material to the surface of the gravel or formation which is capable of adhering to such surfaces and forming a tenacious water-repellent film. The film is monomolecular and hydrophobic. The active ingredient in the chemical treatment is commercial soybean lecithin. The material is added to the surfaces by injecting a liquid solution of the chemical down the annulus of the well during steaming and/or physically precoating the gravel pack by soaking it in a liquid solution of the chemical.
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申请公布号 |
US4323124(A) |
申请公布日期 |
1982.04.06 |
申请号 |
US19800183147 |
申请日期 |
1980.09.02 |
申请人 |
SIGMA CHEMICAL CORPORATION |
发明人 |
SWAN, PHILIP G. |
分类号 |
C09K8/54;C09K8/86;E21B41/02;E21B43/02;E21B43/04;(IPC1-7):E21B43/22;E21B43/24 |
主分类号 |
C09K8/54 |
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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