高校地质学报Issue(1)：141-147,7.
渤海湾盆地青东凹陷古近纪烃源岩热演化史研究
Thermal History of Paleogene Source Rocks in the Qingdong Sag, Bohai Bay Basin
摘要
Abstract
Based on seismic, logging and geochemical data, the Easy-Ro model was adopted to invert the paleogeothermal history of the Qingdong sag, and to calculate the paleogeothermal gradient. Based on data of artificial wells and thickness of the hydrocarbon source rocks, the maturity and distribution of the upper 4th member and the lower 3th member of the Shahejie Formation were discussed and the potential hydrocarbon generation zone was predicted. The results showed that the paleogeothermal gradient of the Qingdong Sag was 3.8℃/100m; the maturity of source rocks in the upper 4th member of the Shahejie Formation was higher than that of the lower 3th member of the Shahejie Formation which are in the stages of mature-over mature and mature-low mature, respectively. In a vertical plane, the hydrocarbon generation domain and maturity of source rocks of the upper 4th member of the Shahejie Formation was larger than those of the lower 3th member of the Shahejie Formation, while in a plane, the main hydrocarbon zone are located on the main part of the Qingdong Sag (North fault-step, north sub-sag, middle sub-sag and south sub-sag) and the Qingnan subsag. The western slope of the Qingdong Sag did not reach the hydrocarbon generating threshold.关键词
青东凹陷/烃源岩/镜质体反射率/古地温梯度/热演化史Key words
Qingdong sag/source rocks/vitrinite reflectance/geothermal gradient/thermal history分类
天文与地球科学引用本文复制引用
程燕君,吴智平,李伟,王政凯..渤海湾盆地青东凹陷古近纪烃源岩热演化史研究[J].高校地质学报,2013,(1):141-147,7.基金项目
教育部高等学校博士学科点新教师基金(K0901045A) （K0901045A）
中央高校基本科研业务费专项资金(27R1101053A)联合资助 （27R1101053A）
