公开(公告)号：US06770603B1

公开(公告)日：2004-08-03

申请号：US09889364

申请日：2002-02-05

申请人： Christopher Sawdon ,  Mostafa Tehrani ,  Paul Craddock ,  Anthony Lawson

发明人： Christopher Sawdon ,  Mostafa Tehrani ,  Paul Craddock ,  Anthony Lawson

IPC分类号： C09K706

CPC分类号： C09K8/36 ,  Y10S507/925

摘要： A wellbore fluid having a non-aqueous continuous liquid phase that exhibits an electrical conductivity increased by a factor in order of 104 to 107 compared to conventional invert emulsion comprises from about 0.2% to about 10% by volume of carbon black particles and one or more emulsifying surfactant(s) selected from the class including nonionic emulsifiers of Hydrophilic-Lipophilic Balance (HLB) less than about 12, and anionic surfactants wherein the counter-ion (cation) is any of alkali metal, ammonium, or hydrogen ions. This wellbore fluid can be used for drilling or completing a well and can be used for providing enhanced information from electrical logging tools, measurement while drilling, logging while drilling, geosteering and the like.

摘要翻译： 与常规倒转乳液相比，具有显示导电性提高10至10 7倍的电导率的非水连续液相的井筒流体包含约0.2％至约10体积％的碳 黑色颗粒和一种或多种选自亲水 - 亲油平衡（HLB）的非离子乳化剂（小于约12）的乳化表面活性剂和阴离子表面活性剂，其中抗衡离子（阳离子）是碱金属，铵， 或氢离子。 该井筒流体可用于钻井或完井，并可用于从电测井工具，钻井测量，钻井测井，地质导向等方面提供增强的信息。