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Controls on petroleum stability in deep and hot reservoirs: A case study from the Tarim Basin

文献类型：期刊论文

作者Wang, Daowei1,2; Cai, Chunfang2,3; Yun, Lu4; Liu, Jingyan1; Sun, Peng5; Jiang, Ziwen2,3; Peng, Yanyan2,3; Zhang, Hao2,3; Wei, Tianyuan2,3; Pei, Bingbing5
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2023
卷号147页码:18
ISSN号0264-8172
关键词Oil stability Diamondoid Heating rate Duration TSR Tarim basin
DOI10.1016/j.marpetgeo.2022.106014
英文摘要Petroleum stability varies greatly among different basins with light oil recently being produced from reservoirs at depths up to 8260 m and present bottom hole temperatures up to 171 degrees C in the Tarim Basin. Determining the extent of oil-gas conversion (EOGC) and its controls are crucial to the "exploration deadline" of temperature or depth for liquid hydrocarbons. For this purpose, about 90 oils from the Cambrian and Ordovician in the Tarim Basin have been analyzed for biomarkers, diamondoids and thiadiamondoids, and their gas/oil ratios were collated. These oils have EOGC from 45.4 to 98.3% for TSR-altered oils in the Tazhong and Shunbei areas, and only 0-49.2% for all other non-TSR oils. Among non-TSR-altered oils, Tazhong oils show higher EOGC values (28.0-49.2%) than those in Tabei (0-9.7%) and Shunbei (0-32.7%) oils, respectively. We propose that higher heating rates (7 degrees C/Ma) and shorter durations (<5 Ma) at high temperatures (>150 degrees C) may account for the lower EOGC values of oils in the Tabei and Shunbei areas than those in the Tazhong with values of 0.1 degrees C/Ma and 250 Ma (>120 degrees C), respectively. The oil may be completely converted to methane-dominated gas if it was exposed to high temperatures for a longer duration as exampled from gas pools from the Lower Cambrian in the Sichuan Basin. In this case, the oil was heated at a rate of 1 degrees C/Ma since the oil charge and experienced >200 degrees C for about 50 Ma. Thermochemical sulfate reduction may have enhanced the conversion of oil to gas, leading to an increase in EOGC values from 30% for non-TSR-altered oils to 98% for the strongly TSR-altered oil in the eastern Tazhong area with similar burial-heating history. A similar case for elevated EOGC due to TSR can be found in the Smackover Formation, Gulf of Mexico. Thus, two global models related to heating rate and duration at high temperatures and TSR are developed to illustrate oil stability with temperature and are expected to be instructive for deep petroleum exploration.
WOS关键词THERMOCHEMICAL SULFATE REDUCTION ; EAST SICHUAN BASIN ; THERMAL-CRACKING ; SOURCE ROCKS ; CRUDE OILS ; NW CHINA ; ISOTOPIC COMPOSITIONS ; CARBONATE RESERVOIRS ; SMACKOVER FORMATION ; GAS EXPLORATION
资助项目National Natural Science Foundation of China ; Ministry of Science and Technology of SINOPEC ; [41730424] ; [41961144023] ; [P20063-1]
WOS研究方向Geology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000891835300003
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC ; Ministry of Science and Technology of SINOPEC
源URL[http://ir.iggcas.ac.cn/handle/132A11/106990]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Cai, Chunfang; Liu, Jingyan
作者单位1.China Univ Geosci Beijing, Sch Energy Resources, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.SINOPEC, Northwest Petr Co, Urumqi 830011, Peoples R China
5.Yangtze Univ, Key Lab Explorat Technol Oil & Gas Resources, Minist Educ, Wuhan 430100, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Daowei,Cai, Chunfang,Yun, Lu,et al. Controls on petroleum stability in deep and hot reservoirs: A case study from the Tarim Basin[J]. MARINE AND PETROLEUM GEOLOGY,2023,147:18.
APA Wang, Daowei.,Cai, Chunfang.,Yun, Lu.,Liu, Jingyan.,Sun, Peng.,...&Pei, Bingbing.(2023).Controls on petroleum stability in deep and hot reservoirs: A case study from the Tarim Basin.MARINE AND PETROLEUM GEOLOGY,147,18.
MLA Wang, Daowei,et al."Controls on petroleum stability in deep and hot reservoirs: A case study from the Tarim Basin".MARINE AND PETROLEUM GEOLOGY 147(2023):18.

入库方式： OAI收割

来源：地质与地球物理研究所

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