The Features of Sedimentary Microfacies and Reservoir Physical Properties of Channel Gravity Flow Sandbody in Lianhua Interval in Gaosheng Oilfield
2002
The Lianhua interval in Gaosheng oilfield,located at the northern end of the western sag in Lioahe rifted basin,is typical channel gravity flow sandbody deposition.Under the influence of the basement structure of the rifted basin,deposits dumped into the sag from the lake bank with large elevation difference and went forward along the elongated trough faults.Six microfacies are recognized according to various sedimentary marks including main culvert,overflow between main culverts,distributary culvert,overflow be-tween distributary culverts and the front.The distributary culvert microfacies have the best reservoir physical proper-ties,the next is main culvert microfacies,and the rest are poor microfacies.
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