论文部分内容阅读
烃源岩的研究与评价是油气地球化学理论在油气勘探实践中应用的主要方面之一。从地球化学角度讲烃源岩是指具备了生油条件,已经生成并能排出具有工业价值油、气的岩石。一个地区(盆地)或层系的含油远景如何,首先就取决于烃源岩的生烃潜力,所有烃源岩研究的主要任务就是确定目的层的生烃潜力。本次对黄陵探区延长组烃源岩分布、有机质丰度、有机质类型、成熟度及生化特征进行研究和评价,并进行油气特征及油气源对比。结果表明研究区长7油层组湖相暗色泥岩为本区长6、长4+5和长2油层组主力烃源岩,其它油层组源岩贡献较少。
The study and evaluation of source rocks is one of the main aspects of the application of the theory of oil and gas geochemistry in oil and gas exploration. From a geochemical point of view of source rock is to have a raw oil conditions have been generated and can be discharged with industrial value of oil and gas rock. The oily prospect of a region (basin) or stratigraphy depends first and foremost on the hydrocarbon generation potential of source rocks. The primary task of all source rock studies is to determine the hydrocarbon potential of the target formation. In this paper, the source rock distribution, organic matter abundance, organic matter type, maturity and biochemical characteristics of Yanchang Formation in Huangling Exploration Area are studied and evaluated, and the characteristics of oil and gas are compared with that of oil source. The results show that the lacustrine dark mudstone of Chang 7 oil layer in the study area is the main hydrocarbon source rock in this area, and the contribution of other source rocks is less.