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23. Review on Methods of Thermal Evolution History in Sedimentary Basins and Thermal Evolution History Reconstruction of Superimposed Basins.

Author

REN Zhan-li, TIAN Tao, LI Jin-bu, WANG Ji-ping, CUI Jun-ping, LI Hao, TANG Jian-yun, and GUO Ke

Abstract

Tectonic-thermal event in sedimentary basin is a research hotspot and leading edge of basin thermal evolution history. The new developments of low temperature thermochronology, geothermometer and geodynamics model methods on the thermal evolution history in sedimentary basins were introduced. Reconstruction of tectonic-thermal evolution history of superimposed basins is one of the frontiers and difficulties in the research of thermal evolution history, and the dating technology of low temperature thermochronology is an important method for the reconstruction of tectonic-thermal evolution history of superimposed basins. A lot of superimposed basins are located in China, and the paleogeothermal fields of superimposed basins are generally superimposed and transformed in late stage, the paleogeothermal field information of superimposed basins in early stage is erased or covered by the basins in late stage. From the perspective of the effect of superimposition and transformation of superimposed basins on the paleogeothermal field, according to the differences of geothermal field information record, maintenance and late superposition and transformation of superimposed basins in different evolution stages, combined with various geothermal methods, taking the correct geological model and a large number of actual geological data as constraint, the new thought and method for the real reconstruction of thermal evolution history of superimposed basins were purposed in different evolution stages. [ABSTRACT FROM AUTHOR]

Published
2014

24. Resource Potential Classification Evaluation of E2S42 Shale Oil in Damintun Depression

Author

Yan, Xin Tong, Chen, Guo Hui, Xue, Hai Tao, Li, Jin Bu, and Wang, Xin

Abstract

Shale oil resource potential classification evaluation is needed to precisely calculate the resource potential and prepare for the prediction of shale oil sweet spots. Geochemical analysis results shows that the E2S42 shale in Damintun Depression has strong hydrocarbon generation capacity. The classification evaluation criteria of E2S42 Shale oil in Damintun Depression was established according to the triple-division characteristic of measured TOC vs. S1. The shale oil oiliness parameter S1 was obtained by using improved logR method. The loss of hydrocarbon was recovered by chemical kinetics method. Volumetric method was used to calculate different grades of E2S42 shale oil in Damintun Depression. Grade I resource is 334 million tons. Grade II resource is 33 million tons. Grade III resource is 15 million tons. Grade I resource accounts for over 90% of the total resource content. High value area mainly concentrated near Well Shen223 and Well Shen224. Results shows that the E2S42 shale in Damintun Depression has good resource potential.

Published
2013
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