发明名称 |
SUBSTITUTED MACROCYCLIC KPOLYETHERS |
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 macrocyclic polyether containing at least two nitrogen-linked phosphomethyl groups and enough monovalent basic compound to provide a solution pH of about 8. |
申请公布号 |
MY8500549(A) |
申请公布日期 |
1985.12.31 |
申请号 |
MY19850000549 |
申请日期 |
1985.12.30 |
申请人 |
SHELL INTERNATIONALE RESEARCH |
发明人 |
ARIE VAN ZON;FEIKE DE JONG;GERREDINA JOHANNA;TORNY-SCHUTTE |
分类号 |
C07F9/6527;C09K8/528 |
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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