基质酸化矿场评价的褶积法  

A Convolution Method for Field Evaluation of Matrix Acidizing

作　　者：张公社[1] 林涛[2] 吴亚红[2] 范明福[2] 

机构地区：[1]江汉石油学院石油工程系 [2]中原石油勘探局井下特种作业处

出　　处：《江汉石油学院学报》1998年第4期61-65,共5页Journal of Jianghan Petroleum Institute

摘　　要：针对基质酸化注酸过程中井筒附近区域产生的不稳定渗流，应用Ｄｕｈａｍｅｌ原理导出了求解不受酸蚀作用，模拟井底注入压力的相关式。给出了计算不同注酸时刻表皮因子变化的详细过程及应用实例。讨论了油井初始表皮因子和地层渗透率对基质酸化矿场评价结果的影响。应用注酸过程的井口压力和排量数据来计算不同注酸时刻的表皮因子，对酸化作业实施就地监测和评价，有助于提高酸化效果和降低酸化成本。In the light of the transient flow near a wellbore during matrix acidizing, an equation for simulating bottomhole pressure calculation is obtained by using the Duhamel theorem under the condition that there is no chemical reaction between injected acids and reservoir rocks An approach of real time skin calculation at any time of injecting acid is proposed and a field example of calculating skin factor is presented The effect of initial skin factor and formation permeability in an oil well on the evaluation results of matrix acidizing is discussed It is helpful to improve acidizing effect and reduce operational cost for calculating skin factor by applying the data of surface pressure and injection rate and to monitor and evaluate matrix acidizing in site

关 键 词：基质酸化 油层污染 矿场评价 褶积法 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]