【摘要】 松辽盆地滨北大部分地区中浅层的烃源岩有机质成熟度较低,常规油气资源将相当有限,生物气是通过微生物食物链反应而成气,在埋藏很浅的时候就开始形成生物气,因此成熟度较低恰好是适合生物气的生成条件。文章对源岩的发育、分布、埋深、地层温度、母质输入类型、稳定碳同位素组成等特征进行分析后认为,滨北地区有形成生物气的良好条件,应用同柴达木盆地和莺琼盆地进行类比的方法,确定生化甲烷产气率和生物气聚集系数,通过对滨北地区生物气资源量的计算,认为滨北地区不仅具有生物气的生成条件,而且具有一定的资源潜力。更多还原

【Abstract】 In most shallow-medium source rocks in Binbei area in the Songliao Basin, the organic matter is low in maturity and conventional oil and gas resources are quite limited. The biogas are generated through food chain reaction of micro-organisms, and generation of biogas would have begun at a very shallow burial depth, thus low maturity is a favorable condition for generation of biogas. Based on analysis of the development, distribution and burial depth of the source rocks, the formation temperature, the type of parent material influx, stable carbon isotope composition and the other features, it is believed that favorable conditions exist for biogas generation. The generating yields of biochemical methane and accumulation coefficients of biogas are determined through correlation with the analogues in Qaidamu and Yingqiong basins. Based on estimation of the biogas resources in Binbei area, it is believed that this area not only has the conditions of biogas generation, but also has certain resource potentials.更多还原