东营凹陷北带沙四段砂砾岩体储层增产潜力  

Stimulation potential of glutenite reservoir in the north zone,Dongying Depression.

作　　者：张培东[1] 鲁宜全[1] 

机构地区：[1]中国石化集团胜利石油管理局井下作业公司,山东东营257077

出　　处：《油气地质与采收率》2009年第3期110-112,共3页Petroleum Geology and Recovery Efficiency

摘　　要：由于砂砾岩体储层的岩性结构、含油性和非均匀性等特征极为复杂,在勘探试油中还存在一些技术难题未解决,尤其是在储层潜力评价方面存在较大偏差。统计分析了东营凹陷北带沙四段砂砾岩体储层的酸化和压裂效果,总体上压裂效果比酸化效果好。通过典型井例分析,揭示了砂砾岩体储层横向有效渗透率变化的复杂性,阐明了压裂后增产的主要因素。提出了砂砾岩体储层改造的选井选层原则,并进行了实际应用,取得较好的增产效果,为该类储层的下步挖潜进行了有益的探索。Due to the complexity on lithology,oil-bearing characteristics and heterogeneity of glutenite reservoirs,there are still some technical problems unresolved in exploration testing,especially,there is an obvious aberration remained on reservoir potentials evaluation.After the statistical analysis of the acidizing and fracturing effects of Sha4 series glutenite reservoir in the north belt in Dongying Depression,it was concluded that fracturing can result in a better effect than acidizing generally.With some typical field examples,the complexity on the lateral effective permeability change of glutenite reservoir was revealed, and the main factors of the post-fracturing stimulation were also expounded.The well/interval selection principles of glutenite reservoir stimulation were suggested and the field application has acquired preferable effect,this may be a valuable trial to the further potentials development of similar reservoirs.

关 键 词：砂砾岩体 非均质性 酸化 压裂 选井选层 东营凹陷北带 

分 类 号：TE357.14[石油与天然气工程—油气田开发工程]