The Study On Structural Interpretation And Reservoir Prediction Of Liangjia Structural Belt In Yitong Basin

Recent years, zone close to Fault No.2 in Yitong Basin gradually become the focus zone on increase capacity of Jilin Oilfield. Among them, Liangjia structural belt in the northern part of the fault No.2 and in the southeastern margin of Yitong Basin, Well C30 and well C105 in have received oil and gas exploration breakthrough in Yongji and Sheling group. Yitong basin is a Cenozoic rift basin which developed on the basis of Tanlu fault zone,the geological conditions is very complex. There are many geological problems to be solved, Hydrocarbon accumulation mechanism, the main controlling hydrocarbon accumulation factors and the distribution of oil and gas enrichment law is not clear. Especially, sandstone lithologic reservoir forming conditions, accumulation dynamics, main controlling factors and distribution of awareness is still very vague, understanding the need to further deepen.Therefore, on the basis of preliminary studies on the exploration, integrated carry structure, reservoirs and accumulation control function studies on Liangjia structural belt. For in-depth understanding of the overall hydrocarbon accumulation law on Liangjia structural belt and well location deployment guidance has practical significance. Forming rules for understanding the whole Fault No.2 nearby Yitong Basin and other similar structural units are worth promoting.This study,based on detailed structure interpretation, analysis fault system and summary structural characteristics on Liangjia structural belt. Applicate sequence stratigraphy principles established isochronous stratigraphic framework, analysis of sedimentary evolution, use seismic attribute analysis technology, study on the main groups lateral reservoir layer variation. Carry on fine reservoir inversion on important structure position nearby Fault No.2 to fulfill the degree of development of reservoir. Combined with the oil and gas exploration well known case, carry on accumulation factor control analysis. According to constructe and reservoir development situation, carry on oil and gas distribution analysis and favorable zones divided.