辽宁阜新盆地油气勘探方向

阜新盆地经历了近30年的油气勘探活动,一直没有重大油气发现.为了进一步评价该区的资源潜力,探索新的勘探思路,通过油气地质条件综合研究和油气成藏主控因素分析,认为阜新盆地具备常规油气和非常规油气成藏的基本条件,提出主要勘探层系为九佛堂组、沙海组和阜新组.根据九佛堂组、沙海组和阜新组烃源岩条件的差异,指出九佛堂组上段和沙海组下段为常规油气勘探目的层;沙海组上段为页岩气勘探目的层;阜新组为煤层气勘探目的层.油气成藏条件分析结果表明,阜新盆地油气成藏主控因素为保存条件和储集条件,构造油气藏不应做为勘探选区的重点,寻找近洼陷的构造-岩性、岩性油气藏是本区油气勘探的方向.

THE OIL-GAS EXPLORATION DIRECTION OF FUXIN BASIN

With nearly thirty years of oil-gas exploration activities, there has been no significant discoveries in Fuxin Basin. In order to further evaluate its resources potential and make new exploration ideas, based on the comprehensive study on petroleum geological condition and major controlling factors of hydrocarbon accumulation, the authors consider that the Fuxin Basin has the general conditions for conventional and unconventional oil-gas accumulation and the main exploration layers are Jiufotang, Shahai and Fuxin formations. According to the difference of hydrocarbon source rock condition among them, the upper Jiufotang and lower Shahai formations are conventional oil and gas exploration targets, the upper Shahai formation shale as gas exploration target and the Fuxin formation as coal bed methane exploration target. The hydrocarbon accumulation condition analysis indicates that the main controlling factors of hydrocarbon reservoir in Fuxin Basin are preservation and reservoir condition. The direction for oil-gas exploration in the area is searching for structural-lithologic and lithologic reservoir near sag.