Fluid Inclusion Characteristics and Hydrocarbon Accumulation Periods of Triassic Reservoirs in Lunnan Area of Tarim Basin

doi:10.7657/XJPG20170209

Abstract

Abstract: There are some disputes about hydrocarbon accumulation periods and times of Triassic reservoirs in Lunnan Area of Tarim Basin, therefore, 51 samples of fluid inclusions are collected from 13 wells in this area. The paper studies the microscopic features and homogenization temperatures of the fluid inclusions based on microscopic observation and microthermometry technology, and determines the hydrocarbon accumulation periods and times combining with the burial history-thermal evolution history matching. Saline inclusions and gas-liquid two-phase hydrocarbon inclusions are mainly developed in the Triassic reservoirs of Lunnan area, most of which occur in the microfissures of quartz. The hydrocarbon inclusions are bright yellow to yellowish green, which indicates a medium maturity of oil and gas in the study area. Homogenization temperatures of associated saline inclusions show a unimodal distribution characteristic with the peak values mainly ranging from 110℃ to 120℃. One period of hydrocarbon charging occurred in the Triassic reservoirs in Miocene in the area

CLC Number:

TE112.41

SUN Yifang1, ZHA Ming1, GAO Changhai1, ZHANG Haizu2, ZHAO Haitao2, YAN Wenyuan1. Fluid Inclusion Characteristics and Hydrocarbon Accumulation Periods of Triassic Reservoirs in Lunnan Area of Tarim Basin[J]. , 2017, 38(2): 1-1.

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Fluid Inclusion Characteristics and Hydrocarbon Accumulation Periods of Triassic Reservoirs in Lunnan Area of Tarim Basin

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