发明名称 |
Method of secondary oil recovery using an aminoalkylene phosphonic acid and an amine neutralizing agent |
摘要 |
A method of secondary oil recovery is disclosed wherein from 0.1 to 100 000 ppm of a medium soluble aminoalkylene phosphonic acid amine salt are used wherein both the aminoalkylene phosphonic acid moiety and the amine moiety are selected from a specifically defined class of compounds. The substantially medium soluble aminoalkylene amine phosphonates exhibit a significantly improved compatibility with the recovery medium and thus can propagate fairly freely into the medium and consequently cover a largely extended rock surface before being subject to precipitation in the form of a medium insoluble scale inhibitor. The amine compound is represented by combinations of structurally different compounds.
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申请公布号 |
US8349772(B2) |
申请公布日期 |
2013.01.08 |
申请号 |
US200913001110 |
申请日期 |
2009.07.01 |
申请人 |
DEQUEST AG;NOTTE PATRICK;DEVAUX ALBERT |
发明人 |
NOTTE PATRICK;DEVAUX ALBERT |
分类号 |
C09K8/528 |
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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