泌阳凹陷核桃园组优质烃源岩发育古环境特征及地质意义

针对泌阳凹陷优质烃源岩生烃条件及其发育环境不明确的问题,运用多种地质、地球化学分析方法,精细刻画了主力烃源岩的发育规模,明确了研究区优质烃源岩的发育环境,为下步油气勘探提供重要依据.根据生烃条件评价结果和资源贡献,分析厘定核桃园组H34-H32亚段为优质烃源岩发育段;古环境研究揭示核桃园组烃源岩沉积环境自下而上水体逐渐...

Paleo-environmental Characteristics of the Development of High-quality Hydrocarbon Source Rocks in Hetaoyuan Formation of Biyang Sag and Geological Significance

To solve the problem of unclear hydrocarbon generation conditions and development environment of high-quality hydrocarbon source rocks in Biyang Sag, a variety of geological and geochemical analysis methods were used to describe the development scale of the main hydrocarbon source rocks and define the development environment of high-quality hydrocarbon source rocks in the research area, which provides important basis for further oil and gas exploration. According to the hydrocarbon generation conditions and resource contribution analysis, we proposed the Section H₃⁴-H₃² of Hetaoyuan Formation is a high-quality hydrocarbon source rock development section, and the research on paleo-environmental shows that the water gradually become salty from bottom to top in the hydrocarbon source rock sedimentary environment of Hetaoyuan Formation, and the abundance of organic matters in main salting period of Section H₃ upper-H₂ is also relatively high. In conclusion, the comprehensive analysis shows that the annular concave belt is a favorable area for further exploration because of its good hydrocarbon source rock conditions and large amount of remaining resources,This study further clarified the development environment of high-quality source rocks, and provided the basis for further exploration of oil and gas basins.