摘要
针对酸值为０．１ ｍｇ ＫＯＨ／ｇ 的大庆原油，通过相态研究和界面张力测定进行配方初选，通过稳定性测定进行配方调整，得到了以天然混合羧酸盐ＳＤＣ为表面活性剂的ＡＳＰ三元复合驱油体系：１ ．２％ 复碱（ 质量比１∶１ 的Ｎａ２ＣＯ３ ＋ ＮａＨＣＯ３）＋ ０．６％ ＳＤＣ５＋ ０ ．５％ 植物胶（ 苎麻胶） ＋ ０ ．１６％ ＨＰＡＭ（ ＢＰ７） 。此体系与大庆原油间的最低瞬时界面张力为５ ．９３ ×１０－ ４ ｍＮ／ｍ 。在室内用两种填砂管模型进行驱油实验，得到的采收率为１８ ．８ ％ 和１９．１ ％ （ ＯＯＩＰ），注入１ ｇ ＳＣＤ５ 驱出原油１３８．３ ｍＬ。
An alkaline/surfactant/polymer(ASP) flooding system for enhanced recovery of low acid value (0.1 mg KOH/g Oil). Daqing crude oil is prepared through investigating its phase behavior, transient interfacial tension, stability, and viscosity. It is composed of 1.2% Na 2CO 3+NaHCO 3(1∶1), 0.6% SDC 5(a commerical natural mixed carboxylate as surfactant), 0.5% plant gum(as co surfactant), and 0.16% HPAM B P 7. The minimum interfacial tension between the system and crude oil is 5.93×10 -4 mN/m. In laboratory flooding experiments on sand packs high oil displacement efficiencies 18.8% and 19.1% (OOIP) are observed.
出处
《油田化学》
CAS
CSCD
北大核心
1999年第4期341-344,392,共5页
Oilfield Chemistry
基金
国家"八五"重点科技攻关项目
油气藏地质及开发工程国家重点实验室( 西南石油学院) 资助
关键词
混合羧酸盐
ASP
驱油体系
复合驱油
化学驱油
Natural Mixed Carboxylates
Alkaline/Surfactant/Polymer (ASP) Flooding System
Daqing Crude Oil
Formulations
Phase Behavior
Interfacial Tension
Stability
