Improved hydrocarbon migration models in the Northwestern Junggar basin (NW China): evidences from oil-bearing fluid inclusion analyses

摘要

Abundant oil-bearing fluid inclusions are present in two reservoir sandstone samples from the slope and fault zone areas in the northwestern Junggar Basin (NW China), respectively. Free oil in intergranular pores, adsorbed oil on grain surfaces, and petroleum in inclusions hosted by mineral grains of these samples were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). Oil-bearing inclusions were used to provide data on how and when the structures received petroleum charges.