Study On Reservoir Forming Rule Of Fuyu Oil Layer In Chang 46 Block Of Songliao Basin

Make full use of the existing data of the study area, Songliao Basin 46 block of Fuyu reservoir of tectonic characteristics and evolution of; Songliao Basin long 46 block in Fuyu oil layer of oil and gas reservoir types and distribution analysis; determine the source of oil and gas, source rock hydrocarbon supplying ability; of Songliao Basin 46 block of Fuyu reservoir oil gas migration mechanism, oil reservoir model, summed up the oil into the main control factors of reservoir, eventually to its oil and gas distribution favorable areas were optimized.According to the research, it is concluded that the type of Fuyu reservoir in Chang 46 block is mainly dominated by fault lithologic reservoirs, the second is lithologic reservoir, and there are few fault block and fault block oil reservoir. Oil in the section is mainly distributed in FI and FII reservoir, in the plane is on distribution in dense fracture zone and the structural high part; long 46 block of Fuyu oil layer mainly from in Sanzhao sag K1qn1 source rock, Sanzhao sag K1qn1 source rock organic matter abundance and better types, entered the mature stage can long 46 block of Fuyu oil layer play dog oil source; long 46 block of Fuyu oil layer in the delta distributary plain facies sedimentary environment, development mainly is water and underwater distributary channel sand body, and the second is Xi Ba River sheet sand. Longitudinal fi sandstone and FII sand is not well developed, the plane on the southern than northern sand body development; long 46 block of Fuyu oil layer in the conducting channel is faults and sand bodies constitute the and petroleum migration path has two, a is along the fault with sand body formation of, in the study area mainly two, distributed in the southwest region, another is along the sand body with fracture formation, in the study area are mainly nine, mainly distributed in the northwest, a small amount of the distribution in the southwest. Length 46 block of Fuyu oil layer of oil as main control factors of reservoir are mainly three: 1) petroleum migration path to control the distribution of oil distribution; 2) petroleum migration path on the high position of the structure is the favorable areas for oil and gas accumulation; 3) switch sand configuration type control reservoir type. Oil accumulation model is Sanzhao sag section generated by the source rocks of oil flowing movement into the Fuyu oil layer again under the action of buoyancy along the fault with sand or along the sand body with fault transporting pathway to a length of 46 block lateral migration. Finally, in the dense fracture belt and structural high part broken sand traps gather into a reservoir model. 4 favorable target areas of Fuyu reservoir formation in the long 46 block of Songliao basin are predicted.