发明名称 |
Dissolving barium sulfate scale with aqueous solutions of salts of carboxymethyl monocyclic macrocyclic polyamines |
摘要 |
Barium sulfate scale can be removed from remote locations such as those in or around the borehole of a well extending into a subterranean earth formation by contacting the scale with an aqueous solution consisting essentially of water,a monovalent cation salt of a monocyclic macrocyclic polyamine containing at least two nitrogen-linked carboxymethyl groups and enough monovalent basic compound to provide a solution pH of about 8.
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申请公布号 |
US4190462(A) |
申请公布日期 |
1980.02.26 |
申请号 |
US19790003155 |
申请日期 |
1979.01.15 |
申请人 |
SHELL OIL |
发明人 |
DE JONG, REIKE;REINHOUDT, DAVID N;TORNY-SCHUTTE, GERRIDINA J |
分类号 |
C09K8/528;C09K8/78;(IPC1-7):B08B3/08 |
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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