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辽河盆地基岩潜山油藏裂缝型储层特征
引用本文:肖淑蓉,张跃明.辽河盆地基岩潜山油藏裂缝型储层特征[J].中国海上油气,2000(2).
作者姓名:肖淑蓉  张跃明
作者单位:石油大学!北京102200(肖淑蓉),辽河油田!辽宁新民110316(张跃明)
摘    要:辽河盆地裂缝型基岩潜山油藏的分布受早第三纪北东向伸展断层控制 ,储层主要为太古界混合花岗岩、黑云母斜长片麻岩、浅粒岩、碎裂岩以及中元古界白云岩、石英砂岩。岩石储集空间以密集发育的微观裂缝系统为主 ,宏观裂缝系统主要起渗流通道作用。裂缝系统主要是在早第三纪及中生代拉张构造应力场作用下形成的 ,裂缝在垂向上的分布具有分带性。储集层裂缝的分维值大于 1 .2 ,而该值大于 1 .34为好储层 ,分维值大小与岩性和断层有关。

关 键 词:裂缝  潜山油藏  变质岩  分维值  辽河盆地

FRACTURED RESERVOIRS OF BURIED-HILL BASEMENT IN LIAOHE BASIN
Xiao Shurong.FRACTURED RESERVOIRS OF BURIED-HILL BASEMENT IN LIAOHE BASIN[J].China Offshore Oil and Gas,2000(2).
Authors:Xiao Shurong
Abstract:In Liaohe basin,the distribution of fractured buried hill reservoirs is controlled by NE trending extension faults.The reservoir rocks are the Archaean migmatitic granite,biotite plagiogneiss,leucogranulitite and cataclasite and the Middle Proterozoic dolomite and quartzose sandstone.The reservoir space is dominated by micofracture systems,but macrofracture systems play an important role in fluid seepage.Mainly formed in the Mesozoic and Paleogene tensional stress fields,the fracture systems show some zones vertically.The fractal dimension of fractures are related to lithology and faults,and it is over 1.2 in the buried hill reservoirs.When it is higher than 1.34,the reservoirs would be excellent.
Keywords:fracture  buried  hill reservoir  metamorphic rock  fractal dimension  Liaohe basin
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