发明名称 |
PROCESS TO PRODUCE OIL OR GAS FROM A SUBTERRANEAN FORMATION USING A CHELATING AGENT |
摘要 |
The present invention relates to a two-step process to produce oil or gas from a subterranean formation wherein in a first step the subterranean formation is treated with an aqueous composition containing a chelating agent selected from the group of glutamic acid N,N-di-acetic acid or a salt thereof (GLDA), aspartic acid N,N-diacetic acid or a salt thereof (ASDA), methylglycine N,N-diacetic acid or a salt thereof (MGDA), and N-hydroxyethyl ethylenediamine N,N′,N′-triacetic acid or a salt thereof (HEDTA) and wherein, in a next step, in the outlet streams from the subterranean formation the aqueous phase is separated from the non-aqueous phase. |
申请公布号 |
EP2861692(A1) |
申请公布日期 |
2015.04.22 |
申请号 |
EP20130733964 |
申请日期 |
2013.06.14 |
申请人 |
AKZO NOBEL CHEMICALS INTERNATIONAL B.V. |
发明人 |
DE WOLF, CORNELIA, ADRIANA;NASR-EL-DIN, HISHAM;DE OLIVEIRA BARRA, ESTEVAO;BANG, EDWIN, RUDOLF, ANTONY;STANITZEK, THEODOR, JOHANNES |
分类号 |
C09K8/528;C09K8/68;C09K8/72;C09K8/94;C10G33/04 |
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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