SEDIMENTARY CHARACTERISTICS AND HYDROCARBON-BEARING SIGNIFICANCEOF FAN DELTA IN TURPAN-HAMI BASIN

Abstract

Abstract: Based on comprehensive analyses of lithology, electrical property, sedimentary structure, rock texture and oil-bearing characteristics of borehole section and surface outcrop, it is considered that sandy conglomerate reservoir in northern Turpan-Hami basin is of fan-delta origin, which is characterized by close provenance, coarse debris, shallow facies belt and low composition maturity.The sediments are dominated by drag flow.It is subdivided into three subfacies (fan-delta plain, fan-delta front and profan-delta)and nine microfacies.Facies model was established.It is suggested that braided channel of fan-delta plain and underwater channel of fan-delta front possess better reservoir quality and entrapment condition, thereby the target for oil and gas exploration in this area.

Key words: Turpan basin, Hami basin, Alluvial fan, Delta, Sedimentary characteristics, Sedimentary model

Zhang Wenchao, Zhao Yan, Li Shengming, Zheng Xian, Tan Yundong. SEDIMENTARY CHARACTERISTICS AND HYDROCARBON-BEARING SIGNIFICANCEOF FAN DELTA IN TURPAN-HAMI BASIN[J]. Xinjiang Petroleum Geology, 1998, 19(4): 303-307.

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SEDIMENTARY CHARACTERISTICS AND HYDROCARBON-BEARING SIGNIFICANCEOF FAN DELTA IN TURPAN-HAMI BASIN

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