裂缝性砂岩储层酸化和压裂产能预测研究  

Research on Capacity Prediction of Acidification and Fracture for Fractured Sandstone Reservoir

作　　者：张思顿 王新海[1] 张福祥[3] 杨向同[3] 牛新年[3] 王宇[3] 

机构地区：[1]中国石油大学(北京),北京102249 [2]中石油煤层气有限责任公司,北京100102 [3]塔里木油田分公司,新疆库尔勒841000

出　　处：《油气井测试》2015年第2期5-8,11,共5页Well Testing

基　　金：国家科技重大专项"塔里木盆地库车前陆冲断带油气开发示范工程-裂缝性砂岩储层污染评价及产能预测技术研究"(No.2011ZX05046-4)内容

摘　　要：大北-克深地区低渗透裂缝性砂岩气藏,储层物性较差,初期产能较低,酸化和压裂是提高产能的主要措施。对泵压、排量以及酸液注入量等酸化施工参数与产能的关系进行研究,发现单位厚度的酸液注入量与产能具有较好的线性关系;对砂浓度、泵压、排量以及压裂液注入量等压裂施工参数与产能的关系进行研究,发现单位厚度的压裂液注入量与产能具有较好的对数关系。此外,对于裂缝性气藏,产能的大小还取决于裂缝的发育程度。通过成像测井资料获得测试层段的裂缝参数,对裂缝参数与产能的关系进行研究,发现裂缝密度和面缝率与产能具有较好的线性关系。在此基础上,综合酸化和压裂施工参数对产能的影响,得出综合裂缝参数的酸化井和压裂井产能预测公式,相比单一考虑液体注入量的产能预测结果更加精确,并以实例进行了论证。The physical property of low permeability fractured sandstone gas reservoir at Dabei-Keshen area is poor,whose initial capacity is low,and acidification and fracture are main measures to increase its capacity. A better linear relationship between per meter acid injection and capacity is found by studying the relationship between pump pressure,displacement of pump,acid injection and capacity. Good logarithmic relationship between per meter fracture fluid injection and capacity is found by studying the relationship between sand density,pump pressure,displacement of pump,fracture fluid injection and capacity. In addition,for fractured gas reservoirs,capacity also depends on the degree of development of cracks. Fracture parameters of test interval are available through imaging logging data. Good linear relationship between fracture density,fracture seam and capacity is found by studying the relationship between fracture parameters and capacity. On this basis,capacity prediction formula of acidification and fracture can be obtained through integrating the effect of acidizing and fracturing parameters for capacity,the prediction result is more accurate than only considering liquid injection,and be demonstrated by examples.

关 键 词：酸化 压裂 产能预测 裂缝性砂岩 

分 类 号：TE353[石油与天然气工程—油气田开发工程]