储层酸敏感性评价新认识

New Understanding of Evaluation to Reservoir Acid Sensitivity

正确的实验方法是真实评价一个地区酸敏感性程度的前提,由此才能了解拟用于酸化的酸液是否对地层产生伤害以及伤害程度,便于优选酸液配方,寻求更为有效的酸化处理方法。针对目前酸敏感性评价实验方法上存在的酸前、酸后渗透率偏差等问题,提出了在岩心后端加回压的新的实验评价技术。该方法能够真实的模拟出酸敏感性情况,得出准确的实验结果。

The correct experimental method is the premise to truly evaluate extent of a regional acid sensitivity,which is for understanding weather the intended acid fluid harms to the formation and the degree of injury or not,optimizing acid formulations,and seeking more effective acidification treatment. According to problems existing deviation at pre and post acid on experimental method of acid-sensitive evaluation,the new technology of a back pressure in the core back end plus experimental evaluation is introduced. This method can simulate the real situation acidification,get an accurate test result.