Foamed drilling fluids, their process for preparat

专利名称：Foamed drilling fluids, their process for

preparation and the corresponding drillingmethod

发明人：Williamson, Larry Don申请号：EP94401810.0申请日：19940804公开号：EP0695795A1公开日：19960207

摘要：The present invention is directed to an aqueous foamed Drilling Fluid fordrilling well bores into a subterranean formation, comprising water, at least one clay andat least one foaming agent. According to the invention, it further comprises at least onemetal hydroxide. The invention further relates to a method for preparing said foameddrilling fluid.

申请人：SOFITECH N.V.,COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER S.A.

地址：Atlantic House - 5th Floor, Noorderlaan 147 - Bus 5 C B-2030 Antwerpen BE,50,Avenue Jean Jaurès F-92541 Montrouge FR

国籍：BE,FR

代理机构：Menès, Catherine

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