Hydrocarbon Generation Potential of the Upper Palaeozoic Coal Measure Source Rocks in Su11 Block

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Zhou, Shaoping^1

Sulige Gas Field Branch, CNPC Great Wall Drilling Company, China^1

关键词: Characteristics analysis;    Distribution of source rocks;    Experimental testing;    Geological background;    Hydrocarbon generation potential;    Organic carbon contents;    Tight sandstone gas;    Vitrinite reflectance;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022041/pdf
DOI  :  10.1088/1755-1315/170/2/022041

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Based on the analysis of regional geological background, relevant work is carried out through experimental testing, logging evaluation, and reservoir forming characteristics analysis and drilling productivity statistics. The analysis shows that the residual organic carbon content of the Upper Paleozoic coal measure source rocks in the Su 11 block ranges from 40.86% to 70.75%, and the residual organic carbon content of the dark mudstone ranges from 0.51% to 26.80%. The organic matter is mainly composed of vitrinite and inordinate with carbon isotope ranging from -24.81 ‰ to 22.64 ‰ and type 3. The vitrinite reflectance distribution of source rocks is between 1.2% and 2.1%, and is in the mature-high maturity stage. The total gas generation intensity of source rocks is between (10-50) × 108m3 and km2. The plane shows "strong north weak" Tight sandstone gas migrates into the reservoir through "near source", and the gas source conditions have significant control over the gas reservoir distribution.