TREATMENT OF ILLITIC FORMATIONS USING A CHELATING

专利名称：TREATMENT OF ILLITIC FORMATIONS

USING A CHELATING AGENT

发明人：DE WOLF, Cornelia Adriana,NASR-EL-DIN

MAHMOUD, Mohamed Ahmed,NASR-EL-DIN, Hisham

申请号：EP11802342.3申请日：20111214公开号：EP2652077A1公开日：20131023

摘要：The present invention relates to a process for treating a sandstone formationcomprising introducing a fluid containing glutamic acid N,N-diacetic acid or a salt thereof(GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA) and having a pHof between 1 and 14 into the formation. The invention in addition relates to a fluidsuitable for use in the above process containing 5-30 wt % of glutamic acid N,N-diaceticacid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof(MGDA), a corrosion inhibitor, a surfactant, and a mutual solvent.

申请人：Akzo Nobel Chemicals International B.V.

地址：Stationsstraat 77 3811 MH Amersfoort NL

国籍：NL

代理机构：Akzo Nobel IP Department

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