调剖剂在新木油田油层中的吸附规律

Investigations of the gelation adsorption rules of profile control agent in the formation of Xinmu oil field

为了研究聚合物调剖剂在新木油田油层岩石中吸附成胶规律 ,在室内测定了 2种聚合物凝胶类调剖剂的静态和动态吸附量 ,分析了调剖剂质量浓度、pH值和配制水的矿化度等因素对吸附量的影响 .结果表明 :2种调剖剂在岩石中的吸附量随调剖剂质量浓度、pH值和配制水的矿化度的增大而增加 ;在相同条件下动态吸附量要低于静态吸附量 ;岩石表面的吸附使成胶时间延长 ,凝胶强度变弱 ;

This paper describes experimental investigations of the rul e of gelation in the formation of Xinmu oil field in Jilin. Two kinds of gels ar e introduced into measurements of static and dynamic adsorptions. We also examin ed the effect of mass concentration pH value and salinity on adsorptions. Some c onclusions drawn from the result are that the adsorption increase with those fac tors increasing and the level of dynamic adsorption is lower than that of static adsorption under the same condition; for the reasons of static and dynamic adso rptions, the gel time was delayed and gel strength was weakened. Therefore the a dsorption loss should be considered when the gelation is applied for water shut off treatments in matrix formation.