Oil Accumulation Regularity Of P Oil Layer In Zhao 41-zhou 58 Block In Songliao Basin

This article describes the regional geology state, reservoir types and distribution characteristics of oil and gas of P oil layer in Zhao 41-58 block in Songliao basin. Through analyzing the accumulation condition such as the source rock, reservoir and oil source fault of the study area, summarized the controlling factors of hydrocarbon accumulation in the study area. Pointed out that the trap formation and the oil and gas migration state are controlled by the fault and sand, and the fault and sand are the main control factors in this zone. Through the study of superimposed with source rock, seal rock, faults, migration paths, trap conditions and reservoir, we have analyzed whether the supply of oil sources in the underlying ,whether the growth of the oil source fault, whether the growth of sand, they are the main controlling factors of hydrocarbon accumulation and distribution of P oil layer in Zhao 41-58 block, and the horst in the fault condensed belts and fault stage construction are benefit for the oil accumulation. Based on the Dissection of the typical oil and gas reservoirs or wells, concluded that there are 3 kinds of accumulation mode in study area, namely, the vertical migration and accumulation mode within the source, the first vertical and then lateral migration and accumulation mode within the source, the vertical migration and accumulation mode outside the source.