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Contrasting diagenetic evolution patterns of platform margin limestones and dolostones in the Lower Triassic Feixianguan Formation, Sichuan Basin, China

文献类型：期刊论文

作者Jiang, Lei1,2,3; Worden, Richard H.4; Cai, Chun Fang1,2; Shen, An Jiang5; He, Xun Yue5; Pan, Li Yin5
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2018-04-01
卷号92页码:332-351
关键词Feixianguan formation Sichuan Basin Carbonate reservoir Reservoir quality Diagenesis Dolomitization Thermochemical sulfate reduction Porosity evolution Fluid inclusion C/O/Sr isotopes
ISSN号0264-8172
DOI10.1016/j.marpetgeo.2017.10.029
文献子类Article
英文摘要Deeply-buried carbonate-reservoirs from the Lower Triassic Feixianguan Formation in the Sichuan Basin of China host extensive natural gas resources. These reservoirs are predominantly found in oolitic shoals, with the reservoir quality of dolomitized zones being higher than that of undolomitized limestone counterparts. Here we present a combination of petrographic, isotopic, fluid inclusion, and quantitative porosity data in order to understand and predict the diagenetic processes that have impacted the reservoir quality of dolostones and limestones. The porosity of limestones has been reduced to similar to 7.5% due to calcite cementation, whereas the porosity in oolitic dolostones is not cemented with calcite and typically has similar to 23.5% porosity. Dolomitization and concurrent early-diagenetic gypsum growth played crucial roles on the development and preservation of high porosity in the oolitic dolostone, first by stabilizing the rock fabric to inhibit loss of porosity during burial, and secondly through the generation of new porosity by dissolution of carbonate and anhydrite. A negative shift of delta O-ls and salinity values (< 3.5 wt. %) measured from fluid inclusions in diagenetic calcite cement in limestones suggest that diagenesis associated with meteoric water played a key role in destroying limestone reservoir quality. Early oil charge seems to have had a positive effect on carbonate reservoir quality in the dolostones, since oil emplacement inhibited calcite cementation. Subsequently, thermochemical sulfate reduction (TSR) occurred, predominantly in the dolostones, as shown by TSR calcite cement with highly negative delta C-13 values (similar to-20%0/00 VPDB) and delta O-18 (similar to-100% VPDB) together with elevated calcite precipitation temperatures (>110 degrees C). It is likely that TSR was responsible for the formation of enlarged dissolution vugs that increased porosity by similar to 2% in dolostones due to: i) anhydrite dissolution, ii) production of significant amounts of water resulting in formation water undersaturated with respect to calcite and dolomite, iii) generation of H2S, and CO2, and the consequent reaction of H2S with the siderite (FeCO3) component in calcite and dolomite. This study demonstrates the importance of diagenesis in the formation of deeply-buried, high-quality reservoirs in ooiddominated grainstones influenced by the presence of evaporites. Our results should be useful for guiding future exploration and reservoir developments in similar paleogeographic and diagenetic settings.
WOS关键词THERMOCHEMICAL SULFATE REDUCTION ; JURASSIC SMACKOVER FORMATION ; CARBONATE GAS-RESERVOIRS ; DOLOMITE RESERVOIRS ; EASTERN SICHUAN ; SW CHINA ; HYDROTHERMAL FLUIDS ; FORMATION MECHANISM ; BURIAL DIAGENESIS ; STABLE-ISOTOPES
WOS研究方向Geology
语种英语
WOS记录号WOS:000432760400021
出版者ELSEVIER SCI LTD
资助机构Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; 41672143) ; 41672143) ; 41672143) ; 41672143) ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; 41672143) ; 41672143) ; 41672143) ; 41672143) ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; 41672143) ; 41672143) ; 41672143) ; 41672143) ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Natural Science Foundation of China(41402132 ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; National Science and Technology Major Project(2017ZX05008-004) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; PetroChina(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; Chinese Academy of Sciences(RIPED-2015-JS-272) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; China Postdoctoral Science Foundation(20150035) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; Chinese Scholarship Council (CSC)(201704910007) ; 41672143) ; 41672143) ; 41672143) ; 41672143)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88234]  
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
通讯作者Jiang, Lei
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Yale Univ, Dept Geol & Geophys, POB 6666, New Haven, CT 06511 USA
4.Univ Liverpool, Sch Environm Sci, Dept Earth Ocean & Ecol Sci, Liverpool L69 3GP, Merseyside, England
5.PeuroChina Hangzhou Res Inst Geol, Hangzhou 310023, Zhejiang, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Lei,Worden, Richard H.,Cai, Chun Fang,et al. Contrasting diagenetic evolution patterns of platform margin limestones and dolostones in the Lower Triassic Feixianguan Formation, Sichuan Basin, China[J]. MARINE AND PETROLEUM GEOLOGY,2018,92:332-351.
APA Jiang, Lei,Worden, Richard H.,Cai, Chun Fang,Shen, An Jiang,He, Xun Yue,&Pan, Li Yin.(2018).Contrasting diagenetic evolution patterns of platform margin limestones and dolostones in the Lower Triassic Feixianguan Formation, Sichuan Basin, China.MARINE AND PETROLEUM GEOLOGY,92,332-351.
MLA Jiang, Lei,et al."Contrasting diagenetic evolution patterns of platform margin limestones and dolostones in the Lower Triassic Feixianguan Formation, Sichuan Basin, China".MARINE AND PETROLEUM GEOLOGY 92(2018):332-351.

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来源：地质与地球物理研究所

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