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 |
US2015107832(A1) |
申请公布日期 |
2015.04.23 |
申请号 |
US201314406706 |
申请日期 |
2013.06.04 |
申请人 |
Akzo Nobel Chemicals International B.V. |
发明人 |
DeWolf Cornelia Adriana;Nasr-El-Din Hisham;De Oliveira Barra Estevao;Bang Edwin Rudolf Antony;Stanitzek Theodor Johannes |
分类号 |
C09K8/52;E21B43/16;E21B43/34;C09K8/86 |
主分类号 |
C09K8/52 |
代理机构 |
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代理人 |
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主权项 |
1. 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-diacetic 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 containing an aqueous phase and a non-aqueous phase the aqueous phase is separated from the non-aqueous phase. |
地址 |
Amersfoort NL |