Sedimentary Filling and Reservoir Formation Response of the First Member of Yaojia Formation, Songliao Basin

Abstract

Abstract: Putaohua oil layers of the First Member of Yaojia Formation in Songliao Basin are large lacustrine delta sediments, and they have the characteristics of lower generation and upper storage. Oil reservoirs are mainly distributed within the range of source rocks of the central depression. The large delta complex in the north developed along the long axis of the Basin macroscopically controls the reservoir distribution. Different sedimentary facies control the distribution of the types of sand body and traps, so reservoir types present zonality on the plane. Reservoirs could hence be classified into structural reservoir, complex reservoir and lithologic reservoir. Oil and gas reservoirs controlled by high mature source rocks control concentrate in the central depressions. Oil and gas reservoir formation could be transported through unconformable surface. Oil and gas reservoirs mainly developed in the Highstand Systems Tract, while aqueous layers mainly developed in the Regressive Systems Tract.

Key words: Songliao Basin, the First Member of Yaojia Formation, large lacustrine delta, reservoir distribution

CLC Number:

P618.13

Zhang Chenchen, Fu Xiuli, Zhang Shun and Chao Xia. Sedimentary Filling and Reservoir Formation Response of the First Member of Yaojia Formation, Songliao Basin[J]. China Petroleum Exploration, 2011, 16(1): 35-40,1.

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Sedimentary Filling and Reservoir Formation Response of the First Member of Yaojia Formation, Songliao Basin

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