塔里木盆地轮台断隆油藏聚集史研究

STUDY ON THE ACCUMULATION HISTORY OF PETROLEUM RESERVOIRS OF THE LUNTAI FAULT UPLIFT IN THE TARIM BASIN

本文针对轮台断隆油藏原油地球化学性质的非均质性,尤其是原油成熟度存在的差异性,确定了湖相油(正常比重原油和黑油)注入方向为该断隆的西南端,而煤成油的注入方向则为东北端。正常比重原油和黑油形成的油藏为原生油藏,而凝析气藏则为原生油藏原油经运移分镏作用而形成的次生油气藏。

Based on the heterogeneity of the geochemical properties of crude oils of petroleum reservoirs in the Luntai fault uplift,especially the difference of crude oil maturity,the paper proposes that lacustrine oils (crude oils with normal density and black oils) input at the southwestern end of the fault uplift and that coal related oils input at the northeastern end.Crude oils with normal density and black oils formed primary oil reservoirs,but gas-condensate reservoirs are secondary oil and gas reservoirs formed by migration fractionation of crude oils in primary oil reservoirs.