Study on Reservoir Characteristics of Chang 8 and Chang 9 in Eastern Bai Bao Area of Wuqi Oilfield
In this paper,the reservoir characteristics of Chang 8 and Chang 9 reservoirs in the east Baibao area of Wuqi Oilfield,Ordos Basin are studied.The results show that the sandstone of Chang 8 and Chang 9 reservoirs in east Baibao is mostly arkose and lithic arkose.The pore throat type of the reservoir is fine pore and thick throat,and the permeability is strong heterogeneous type.Chang 8 sand body is well devel-oped,while Chang 9 sand body is poorly developed.At the same time,the reservoir sensitivity study shows that the Chang 8 and Chang 9 reser-voirs in the Baibao project area are weak-medium velocity sensitive,weak water sensitive,weak alkali sensitive and medium weak stress sensi-tive characteristics,but the Chang 8 reservoir is weak acid sensitive and the Chang 9 reservoir is strong acid sensitive.
East of the White Leopard Area of Wuqi OilfieldChang 8 and Chang 9 ReservoirsTight Oil ReservoirReservoir Sensitivity
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