乾安油田储层敏感性评价

Reservoir sensitivity Evaluation in Qianan Oilfield

对乾安油田四个研究层位的储层岩心,进行室内储层敏感性的评价实验分析。评价分析各个层位的速敏、盐敏、水敏、酸敏、碱敏,结果为:泉头组是中等偏强速敏、强水敏、弱碱敏、酸敏特性的油层,嫩江组是具有强速敏、中等偏弱水敏、中等偏强酸敏、弱碱敏的敏感特性油层,姚家组油层是具有强速敏、强水敏、中等偏弱酸敏、弱碱敏的敏感特性油层,青山口组油层是具有强速敏、强水敏、弱酸敏、强碱敏的敏感特性油层。

n this paper, through the analy sis and evaluation of indoor reservoir sensitivity in the reservoir cores of four research horizons in Qian’an Oilfield, the rapid sensitivity, salt sensitivity, water sensitivity, acid sensitivity and alkali sensitivity of each layer are evaluated and analyzed. The results of the sensitive experiments show that the Quantou Formation is an oil layer with moderately strong sensitivity, strong water sensitivity, weak alkali sensitivity, and moderately strong acid sensitivity. The Nenjiang Formation is a sensitive oil layer with strong sensitivity, moderately weak water sensitivity, moderately strong acid sensitivity and weak alkali sensitivity. The oil layer of Yaojia Formation is a sensitive oil layer with strong sensitivity, strong water sensitivity, moderately weak acid sensitivity and weak alkali sensitivity. The Qingshankou Formation oil layer is a sensitive oil layer with strong sensitivity, strong water sensitivity, weak acid sensitivity and strong alkali sensitivity.