Structure And Reservoir Characteristics Of Fuyu Oil Layer At Sizhan-chao51 Area In The Songliao Basin

To increase the efficiency of oil-gas field development and provide guidance for next explore and develop, this paper use oil and gas geologic integrated research methods to interpret the structure and predict the reservoir layer of area of Sizhan-Chao51.Besides,this paper study the structure and reservoir layer of this area to determine main controlling factor for oil and gas to gather and accumulate of Fuyu oil layer.At last,hydrocarbon accumulation mode can be concluded to predict favorable trap.The study shows that there are two fault bands of the middle and the west on plane,which strike from nearly the south to the north.From the respect of fault displacement,extension length and number, those faults are main part of the middle-shallow layer,especially in the T2 layer and below.In the middle,the Sizhan structure block has lots of faults,which are mainly normal fault.The faults strik from nearly the south to the north and distribute parallel or echelon.In the profile,faults exist in the top of the uplift,which form kinds of graben.In the west,the Chao51 block has two groups of fault,which separately south-north and east-west.They form graben and host or like X or Y.In the late period south-north faults break in the early east-west faults.The Sizhan structure block is a little uplift in a depression at the top of Fuyu oil layer,which is break by faults.The realization of structure and reservoir characteristic,especially sandbody development of major reservoir is of great significance for the gelolgy and gas accumulation study.Besides,it can provide geolgy data for develop and well location suggestion.