Law Of Accumulation Of Chang 6 Reservoir In Hu Jianshan Region

As a new exploration and development of lithologic oil reservoir, the formation of Chang 6 reservoir in Ordos Basin has become the focus of petroleum exploration and development in recent years, and has achieved great development results and economic benefits. Of Chang 6 reservoir forming laws of further research, is conducive to the formation of future exploration and development, and further development of Changqing Oilfield stable production has is of great significance.In this paper, the main control factors of hydrocarbon accumulation are analyzed in this paper, which is based on the anatomy of the typical reservoir in the Chang 6 reservoir, combined with the characteristics of sedimentary facies, physical properties, oil content and well logging.Based on the regional geological structure background, reservoir sedimentary environment and system are studied, the main sedimentary system is delta front deposits. According to well logging, rock core and dynamic data, phase profiles between wells are analyzed, then the sedimentary micro phase and sand body plane exhibition are established, the corresponding maps are drawn. Considering the existed regional granularity, rock core, press mercury experiment analysis, well logging, geological and production test, the reservoir porosity type and structure are studied, and also analyze reservoir inter layers, inner layer, and plane changes, reservoir heterogeneity, reservoir connection and relationship between main factors and “four properties”, at last, beneficial storage region are forecasted.On the basis of previous studies, considering the reservoir forecast and studies results of sedimentary phase, the plane distribution of beneficial reservoir areas are given. According to reservoir profile, source reservoir cap assemblage and other terms of accumulation, the main factors and law of oil-gas distribution of Chang 6 are studied.