关键词: 断裂, 岩性体, 复合油气藏, 圈闭, 油气成藏作用, 油气分布, 岩性油藏, 准噶尔盆地

Abstract: Fault is a chief factor for affecting oilgas reservoir formation. The lithologic bodies such as alluvial fan, fan-delta, reef and bio-bank are the main oil-gas reservoir bodies. When the fault is connected with the lithologic body, the fault-lithologic body oil-gas reservoir will be generated. The study on Junggar Basin showed that the fault and lithologic body became the trap elements and resulted in the dominant type of oil-gas pools in Junggar Basin. The fault activities controlled the basic features of pool formation in the basin. The fault combination style moderately influenced the migration, accumulation, distribution and abundance of oil and gas. The faulting phases strongly influenced the oil-gas migration and accumulation period and the style of pool formation. The Chepaizi-Mosuowan paleo-uplift in the interior of the basin provided the elementary environment for the development of the stratigraphic traps and the fault-lithologic traps to a large extent. The two flank slopes of the paleo-uplift are the favorable area for generating the lithologic and stratigraphic oil reservoirs. The southeast flank slope is the best area.

Key words: fault, lithologic body, combination reservoir, trap, oil gas reservoir formation, oil and gas distribution, lithologic oil reservoir, Junggar Basin