特种油气藏2017，Vol.24Issue(1)：70-75,6.DOI:10.3969/j.issn.1006-6535.2017.01.014
塔里木盆地克深区巴什基奇克组砂岩成岩演化及主控因素
Diagenetic evolution and major controlling factors for sandstone in Bashijiqike Formation of the Keshen Area in the Tarim Basin
摘要
Abstract
Diagenesis of tight sandstone reservoir in Lower Cretaceous Bashijiqike Formation of Keshen Area in the Tarim Basin may directly control tightness of the reservoir, and eventually may restrict formation of the Kuqu Gas Reservoir.There are certain uncertainties in influencing factors for diagenesis in the Study Area.Accordingly, reservoir physical properties, logging data, together with regional geologic background, tectonic evolution history have been used to determine reservoir diagenesis types and relevant influencing factors through casting thin-section, cathode luminescence, scanning electron microscope (SEM),fluid inclusion and other techniques.Research results show tight sandstone reservoirs in Bashijiqike Formation of the Keshen Area experienced compaction, pressolution, cementation, alternation, dissolution and rupture.Currently, these reservoirs are in Middle diagenetic stage B;Diagenesis processes are subject to joint controls of structure, sedimentation, fluid charging and other elements.Among them, tectonization is the most important controlling factor, sedimentary environment may play some supplementary roles, whereas fluid charging displayed the least impacts;Macroscopically, tectonic movements may control reservoir physical properties, sedimentary environment, reservoir evolution, fluid charging and various other processes.Relevant research results may provide necessary guidance for determination of lower limits in physical properties of effective gas reservoirs in the Keshen Area.In addition, these research results may also facilitate restoration of tightening history of relevant reservoirs.关键词
致密砂岩储层/成岩作用/成岩序列/克深地区/巴什基奇克组Key words
tight sandstone reservoir/diagenesis/diagenetic sequence/Keshen Area/Bashijiqike Formation分类
能源科技引用本文复制引用
冯洁,宋岩,姜振学,李宝帅,李峰..塔里木盆地克深区巴什基奇克组砂岩成岩演化及主控因素[J].特种油气藏,2017,24(1):70-75,6.基金项目
国家重点基础发展规划"973"项目"中国西部叠合盆地深部油气复合成藏机制"(2011CB201105) （2011CB201105）
国家科技重大专项"深层油气、非常规天然气成藏机理与有利勘探区评价技术"(2011ZX05008-004) （2011ZX05008-004）
