发明名称 |
METHOD OF SECONDARY OIL RECOVERY |
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 |
CA2727321(A1) |
申请公布日期 |
2010.01.07 |
申请号 |
CA20092727321 |
申请日期 |
2009.07.01 |
申请人 |
DEQUEST AG |
发明人 |
NOTTE, PATRICK;DEVAUX, ALBERT |
分类号 |
C09K8/528;C09K8/58;E21B43/22 |
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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