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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：EP0695795B1公开日：19990915
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 NV,SCHLUMBERGER CIE DOWELL
地址：BE,FR
国籍：BE,FR
代理机构：Menès, Catherine
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