松辽盆地北部生物气和低熟气成藏主控因素

PETROLEUM GEOLOGY & OILFIELD DEVELOPMENT IN DAQING(2010)

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Abstract
针对生物气和低熟气的地质特点,从生物气和低熟气的形成条件研究入手,深入分析源岩、构造、储层等对气藏的控制作用,认为松辽盆地北部具备较好的生物气和低熟气形成条件,生物气和低熟气资源丰富,初步计算资源量约1×1012m3,资源潜力巨大.气藏受气源岩、砂体和断裂3种因素控制;气源岩区控制气藏的宏观分布范围;薄层、砂地比10%~35%储集体控制了气藏的分布,沟通气源岩与砂体的断裂带是气藏聚集的有利地区.具有下生上储的成藏特点,主要为构造-岩性气藏类型.预测了生物气和低熟气气藏的有利分布地区,为下步勘探指明了方向.
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