发明名称 |
SUBSTITUTED MACROCYLIC POLYETHERS |
摘要 |
<p>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 macrocyclic polyether containing at least two nitrogen-linked phosphomethyl groups and enough monovalent basic compound to provide a solution pH of about 8.</p> |
申请公布号 |
GB2054598(B) |
申请公布日期 |
1983.06.29 |
申请号 |
GB19790022689 |
申请日期 |
1979.06.29 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV |
发明人 |
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分类号 |
C07F9/6527;C09K8/528;(IPC1-7):07F9/65 |
主分类号 |
C07F9/6527 |
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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