摘要
研究了天然混合羧酸（盐）复合驱油溶液与大庆、胜利原油构成的体系的界面性质，考察了Ｎａ２Ｃｏ３、ＮａＨＣＯ３、ＮａＣｌ、ＨＰＡＭ、助表面活性剂对体系界面性质的影响，提出了复合驱油体系的配方。研究结果表明，天然混合羧酸（盐）可使复合驱油溶液与大庆或胜利原油之间的界面张力降至超低值。
Several alkaline/surfactant/polymer flooding solutions are formulated on the base of natural mixed carboxylic acids(acid salts) in different combination SDC-1, SDC-2, and SDC-3 (the former two are acids and the later contains some acid salts) for a Shengli and a Daqing crude oils and the interfacial tensions, IFTs, between them are studies at the resevoir temperatures.Ultralow IFTs. are observed between Daqing crude(of low acid value) and the solution of 1.25% SDC-3+0. 08% HPAM(Pfizer's 3530S)+0. 7%Nacl+0. 5% cosurfactant(1.29×10(-4)mN/m) and between Shengli crude(of high acid value)and the solution of 0.5% SDC-3+0. 7$Na2CO3+NaHCO3(1:1)+0. 1% HPAM +0.4%NaCl(1.61×10(-3)mN/m). The systems of Shengli crude and aqueous SDC flooding solutions form middle phase emulsions.
出处
《油田化学》
CAS
CSCD
北大核心
1994年第1期61-65,共5页
Oilfield Chemistry
关键词
脂肪酸
复合驱油
混相驱油
羧酸盐
Natural Mixed Carboxylic Acids(Acid Salts)
Alkaline/Surfactant/Polymer and Surfactant/Polymer Flooding Solutions,Formulations,Interfacial Tensions,Daqing Crude Oil,Shengli(Gudong)Grude Oil
