关键词: 沉积相, 烃源岩, 改造型盆地模拟, 隆升, 博格达山, 准噶尔盆地

Abstract: The characters and its primary times of hydrocarbon generation and expulsion of source rocks are analysed, evolution of structure and sedimentation in the Bogeda mountain block, upheaval of the Bogeda mountain block and its significance to oil and gas exploration is studied using the techniques of structure movement, sedimentary prototype resume, effective source rock evaluation, and reformed basin modeling. It is demonstrated that the present Bogeda mountain block was deep to halfdeep lake at Late Permian and two sets of good to intermediate source rocks for hydrocarbons, that is, the Upper Permian Lucaogou and Hongyanci Formations, were developped in the Bogeda mountain block then. The primary time of hydrocarbon expulsion of the source rocks is at Late Jurassic to Cenozoic when upheaval of the Bogeda mountain block took place. At upheaval times of the Bogeda mountain, the amount of hydrocarbon expulsion of the source rocks from the Bogeda mountain block to the Chaiwopu depression and Miquan block were be reduced. However, the areas adjacent to the Bogeda mountain have thick source rocks themselves, thus their resources potential is still larger. Hence, the Chaiwopu depression and Miquan block adjacent to the Bogeda mountain are also favorable prospecting areas for oil and gas.

Key words: sedimentary facies, source rock, reformed basin modeling, upheaval, the Bogeda mountain, Zhungeer basin