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  4. 中国科学院油气资源研究重点实验室
The role of thermochemical sulfate reduction in the genesis of high-quality deep marine reservoirs within the central Tarim Basin, western China

文献类型：期刊论文

作者Li, Kaikai1,2; Cai, Chunfang3; Jia, Lianqi3; Gao, Yang4; Jiang, Zaixing1,2; Wang, Tiankai3; Jiang, Lei3
刊名ARABIAN JOURNAL OF GEOSCIENCES
出版日期2015-07-01
卷号8期号:7页码:4443-4456
关键词Fluid inclusion Sulfur isotope TSR Carbonate dissolution Tarim
DOI10.1007/s12517-014-1545-1
文献子类Article
英文摘要Deeply buried Ordovician reservoirs within the central Tarim Basin, China, contain elevated concentrations of H2S. This study uses petrography, carbon and sulfur isotopes, and fluid inclusion microthermometry data to determine whether these elevated concentrations formed as a result of thermochemical sulfate reduction (TSR) and evaluates the influence of TSR on porosity. TSR-derived H2S is likely to have been incorporated into pyrite and minor sphalerite, as reflected by the similar delta S-34 values for H2S (15.0-23.4%) and coarse crystalline pyrite (15-29.7 parts per thousand). Sulfide precipitation caused an increase in acidity that allowed the dissolution of carbonates during TSR. The occurrence of dissolution during deep burial is indicated by: (1) the occurrence of dissolution pores within high-temperature (91.6-121 degrees C) burial calcite cement, (2) the coexistence of high-porosity sediments with elemental sulfur and pyrite in areas away from unconformities that would have undergone only limited interaction with meteoric water; (3) the presence of giant porous karst-filling calcites in association with coarse crystalline pyrite; and (4) a slightly negative shift in the delta C-13 values of some postbitumen calcite. Several factors probably limited the effect of TSR on the quality of reservoirs within the central Tarim Basin. The reactive SO4 (2) involved in the TSR process was supplied by deep hydrothermal waters that contained dissolved sulfate rather than by the dissolution of anhydrite, meaning that only a limited increase in TSR-generated porosity occurred, restricted to areas along faults. The heterogeneity of metal ion concentrations within the reservoirs also constrained TSR-related carbonate dissolution, as after ferric ions within the reservoirs were consumed during advanced diagenesis, TSR-derived CO2 accumulated within the reservoirs, causing a negative shift in present-day CO2 delta C-13 values.
WOS关键词TRIASSIC FEIXIANGUAN FORMATION ; CARBONATE GAS-RESERVOIRS ; UPPER JURASSIC SMACKOVER ; ORDOVICIAN CARBONATES ; BURIAL DIAGENESIS ; SICHUAN BASIN ; PHANEROZOIC SEAWATER ; POROSITY EVOLUTION ; HYDROCARBON GASES ; FLUID INCLUSIONS
WOS研究方向Geology
语种英语
WOS记录号WOS:000357101200013
资助机构National Science Foundation for Distinguished Young Scholars of China(41202108) ; National Science Foundation for Distinguished Young Scholars of China(41202108) ; 12th Five-Year National Petroleum Key Projects(41121690) ; 12th Five-Year National Petroleum Key Projects(41121690) ; Fundamental Research Funds for the Central Universities(2652013069) ; Fundamental Research Funds for the Central Universities(2652013069) ; National Science Foundation for Distinguished Young Scholars of China(41202108) ; National Science Foundation for Distinguished Young Scholars of China(41202108) ; 12th Five-Year National Petroleum Key Projects(41121690) ; 12th Five-Year National Petroleum Key Projects(41121690) ; Fundamental Research Funds for the Central Universities(2652013069) ; Fundamental Research Funds for the Central Universities(2652013069)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62309]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
作者单位1.China Univ Geosci, Sch Energy & Resources, Beijing 100083, Peoples R China
2.Minist Educ, Key Lab Marine Reservoir Evolut & Oil & Gas Accum, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources, Beijing 100029, Peoples R China
4.Xinjiang Oilfield Co, Explorat & Dev Res Institude, Kelamayi 834000, Peoples R China
推荐引用方式
GB/T 7714		 Li, Kaikai,Cai, Chunfang,Jia, Lianqi,et al. The role of thermochemical sulfate reduction in the genesis of high-quality deep marine reservoirs within the central Tarim Basin, western China[J]. ARABIAN JOURNAL OF GEOSCIENCES,2015,8(7):4443-4456.
APA Li, Kaikai.,Cai, Chunfang.,Jia, Lianqi.,Gao, Yang.,Jiang, Zaixing.,...&Jiang, Lei.(2015).The role of thermochemical sulfate reduction in the genesis of high-quality deep marine reservoirs within the central Tarim Basin, western China.ARABIAN JOURNAL OF GEOSCIENCES,8(7),4443-4456.
MLA Li, Kaikai,et al."The role of thermochemical sulfate reduction in the genesis of high-quality deep marine reservoirs within the central Tarim Basin, western China".ARABIAN JOURNAL OF GEOSCIENCES 8.7(2015):4443-4456.

入库方式： OAI收割

来源：地质与地球物理研究所

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