五里湾—区长A油藏表面活性剂增油效果OIL INCREMENTAL EFFECT OF THE SURFACTANT FLOODING IN CHANG A RESERVOIR OF WULIWAN BLOCK 1
贾玉琴,杨海恩,陈威武,杨棠英,马丽萍
JIA Yuqin,YANG Haien,CHEN Weiwu,YANG Tangying,MA Liping
摘要(Abstract)：
采用油藏工程方法,研究了长庆油田五里湾一区长A油藏试验区增油效果及影响因素。从作用机理出发,以注水井组为基本单元,对比分析注入参数和地质因素对驱油效果的影响。结果表明:在一定范围内,表面活性剂注入质量浓度越高,油层渗透率、有效厚度越大,注表面活性剂前采出程度越低,增油效果越好;矿场表面活性剂注入质量浓度和注入量远远小于室内实验最佳值,提高注入质量浓度、增加注入体积,增油效果会更加明显。试验进行26个月时,累计增油量达18196 t,效果显著,技术可行。
With the help of reservoir engineering methods,the oil incremental effects and influencing factors are studied for Chang A reservoir's surfactant flooding test.From the viewpoints of the flooding mechanism,taking water injector group as the basic unit,the influences of the injection parameters and geological factors on the oil displacement effects are contrasted and analyzed.The results show that within a certain range,the higher the injection mass concentration of the surfactant is and the bigger the reservoir permeability and effective thickness are,the lower recovery degree and better oil incremental effect will be;the injection mass concentration and volume are far less than the experimental optimum values,higher injection mass concentration and larger injection volume and much better oil incremental effect are achieved.Test for 26 months,the cumulative incremental oil is up to 18196 t,the effects are obvious.In a word,the technique is feasible and practical.
关键词(KeyWords)：
长庆油田;表面活性剂;注入参数;增油效果
Changqing Oilfield;surfactant;injection parameter;oil incremental effect
基金项目(Foundation): 国家自然科学基金项目“原油对泡沫稳定性作用机理研究”(51374013);; 长庆油田科技攻关项目“表面活性剂驱矿场试验效果评价”(13CY2-FW-04)
作者(Author):
贾玉琴,杨海恩,陈威武,杨棠英,马丽萍
JIA Yuqin,YANG Haien,CHEN Weiwu,YANG Tangying,MA Liping
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