冀中坳陷八里庄—薛庄潜山带构造演化与油气成藏

八里庄—薛庄潜山带是冀中坳陷内最为典型的断块型潜山带。为进一步了解该潜山带构造特征及其成藏条件,利用地震、钻井等资料,分析了其形成演化过程。研究认为,八里庄—薛庄潜山带的形成演化过程经历了中新元古代至古生代潜山的物质基础发育期、中生代潜山的初始形成期、早第三纪潜山的主要定型期以及晚第三纪至第四纪潜山的深埋期。构造演化事件影响和控制了该潜山带的油源条件、储集条件、盖层条件、输导条件、圈闭类型、油藏类型等,使其具有优越的油气成藏条件,是今后发现规模储量的有利区带,也是潜山勘探选区重要的评价依据。

Structural Evolution and Hydrocarbon Accumulation of Balizhuang-Xuezhuang Buried Hill Belt in Jizhong Depression

Balizhuang-Xuezhuang buried hill belt is a typical fault-block buried hill belt in Jizhong Depression.The paper analyzes the forming and evolution process of Balizhuang-Xuezhuang buried hill belt by seismic and drilling data for the structural characteristics and reservoir-forming conditions.The results indicate that the evolution process of Balizhuang-Xuezhuang buried hill belt is divided into four phases.The first phase is the development of buried hill material from Meso-Neoproterozoic to Palaeozoic.The second phase is the forming of buried hill rudiment in Mesozoic.The third phase is the main development and formation of buried hill in Early Teriary.The last phase is the deep burial period of buried hill from Neogene to Quaternary.The tectonic events in Balizhuang-Xuezhuang area can be treated as the most important factor for evaluating hydrocarbon bearing potential in buried hills,due to their domination in oil resources,reservoir conditions,transporting conditions,trap-reservoir types in Balizhuang-Xuezhuang buried hill belt.