发明名称 |
Composition and method for controlling precipitation when acidizing wells |
摘要 |
A composition and method for acidizing a formation in the presence of ferric ion, free sulfur and/or sulfides is disclosed. The composition employs a ferric ion reducing agent and a sulfide reactant separately or in combination. The ferric ion reducing agent is a thioalkyl acid. The sulfide reactant compounds include alpha -diketones and saturated and alpha -unsaturated cyclic ketones. In another aspect, the reducing activity of the thioalkyl acid is accelerated by the presence of a catalytic quantity of a compound or mixture of compounds which yield in acid solution cuprous ion, cupric ion or combinations thereof with iodide ion.
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申请公布号 |
US5622919(A) |
申请公布日期 |
1997.04.22 |
申请号 |
US19950556679 |
申请日期 |
1995.11.13 |
申请人 |
HALLIBURTON COMPANY |
发明人 |
BREZINSKI, MICHAEL M.;GARDNER, TOMMY R.;KING, KAREN L.;LANE, JR., JAMES L. |
分类号 |
C09K8/528;C09K8/74;(IPC1-7):C09K7/00;E21B37/06 |
主分类号 |
C09K8/528 |
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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