摘要
渭北油田属于低孔隙度、低渗透率、低丰度、低产油田,开发难度大。为了改善自投产以来出现的部分井组注采对应关系差的问题,亟需提高对储层裂缝预测方法的认识。根据前人研究成果,从构造位置、岩性特征、小层厚度、沉积微相、生产动态等方面对研究区储层裂缝进行预测。结果表明,部分构造曲率较大,砂岩粒度、厚度较小,席状砂微相较为发育的区域有裂缝形成。
Weibei Oilfield belonged to an oilfield with low porosity,super-low permeability,low abundance and low production,it was difficult for development.To solve the problem of poor corresponding relation between water injection and production in some of wellblocks appeared since the starting of oil production,the understanding of reservoir fracture prediction needed badly to be improved.Based on the predecessors'research results,the reservoir fractures in the study area are predicted from the aspects of tectonic position,lithologic features,sublayer thickness,sedimentary microfacies,production performance and etc.The results show that the curvature is bigger in some of structures,the particle size and its thickness are smaller,fractures are formed in the areas where sheet sand is more developed.
出处
《长江大学学报（自然科学版）》
CAS
2017年第3期13-15,共3页
Journal of Yangtze University(Natural Science Edition)
基金
国家科技重大专项(2011ZX05033-004)
关键词
渭北油田
长3油层组
低渗储层
裂缝
生产动态
Weibei Oilfield
Chang 3 Reservoir
low-permeability reservoir
fracture
Production performance
