Multiphase dolomitization of a microbialite-dominated gas reservoir, the middle Triassic Leikoupo Formation, Sichuan Basin, China
文献类型：期刊论文
| 作者 | Jiang, Lei1,2,3; Xu, Zhaohui4; Shi, Shuyuan4; Liu, Wei4 |
| 刊名 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
 |
| 出版日期 | 2019-09-01 |
| 卷号 | 180页码:820-834 |
| 关键词 | Microbialite reservoirs Dolomitization Meteoric water diagenesis Sulfate reduction Hydrothermal fluids |
| ISSN号 | 0920-4105 |
| DOI | 10.1016/j.petrol.2019.05.014 |
| 英文摘要 | Microbialites have great economic potentials in hosting hydrocarbons throughout the geological record. Diagenesis, particularly dolomitization, has been proven to be crucial in microbialite reservoir development, however, the impacts of dolomitization on microbialite reservoir quality were not yet clearly understood. In this study, core samples covering the Middle Triassic Leikoupo formation were collected, and combination of petrology, fluid-inclusion microthermometry, and stable and radiogenic isotopes analyses was conducted, aiming at unraveling the origin of the dolomites and their reservoir characteristics in the microbialites from the Sichuan Basin, China. Two types of microbial dolostone reservoir were determined and compared in terms of their dolomitization mechanisms and reservoir characteristics. Organogenic dolomitization mediated by microbial activities probably resulted in the initial biotic dolomicirte (D1) precipitation in sediment pile as a consequence of bacterial sulfate reduction (BSR), characterized by significant delta C-13 depletion compare to the middle Triassic seawater value. An early stage dolomitization, occurred in fluids dominated by seawater was responsible for the precipitation of very fine crystalline dolomite (D2). Burial dolomitization, precipitated medium-to coarsely crystalline dolomite cements (D3) from burial brine in temperatures between 120 degrees C and 160 degrees C and characterized by elevated Sr-87/Sr-86 values and slightly low delta C-13 values. Last hydrothermal dolomitization event, represented by saddle dolomite cement (D4), has probably occurred and is associated with deeply-seated hydrothermal fluids at temperatures > 200 degrees C. Abiotic microbialite dolomudstone reservoir quality (D2) (porosity = 7.4%; permeability = 24.9 mD) superior to the biotic microbial-mediated dolomudstone reservoir (D1) (porosity=1.4%; permeability=0.6 mD). Microbialite dolomudstone reservoirs (D2) are microporous, with the presence of both primary porosity, e.g., framework and interparticle, and secondary porosity, e.g., solution-enlarged and micropores. The wide occurrence of intragranular and micro-fracture, together with the proximity of larger macropores, may increase connectivity and allow for a combined micropore to macropore transport process for natural gases. Micropores in these dolostones were interpreted to be formed by mole to mole replacement of calcite by dolomite. Hence, this study emphasizes the important role of dolomitization in the formation of ancient microporous microbialites reservoirs characterized by low porosity and low permeability. |
| WOS关键词 | DOLOMITE RESERVOIRS ; FEIXIANGUAN FORMATION ; CARBONATE RESERVOIRS ; CREEK FIELD ; TARIM BASIN ; POROSITY ; EVOLUTION ; PRECIPITATION ; DELTA-C-13 ; FACIES |
| 资助项目 | China National Science and Technology Major Project[2016ZX05004] ; PetroChina Projects[2016B-0401] ; PetroChina Projects[2018A-0104] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018088] ; Chinese Scholarship Council (CSC)[201704910007] ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China[UTA14-001294/15HT10500000010] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000474691800072 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | China National Science and Technology Major Project ; China National Science and Technology Major Project ; PetroChina Projects ; PetroChina Projects ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Chinese Scholarship Council (CSC) ; Chinese Scholarship Council (CSC) ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China ; China National Science and Technology Major Project ; China National Science and Technology Major Project ; PetroChina Projects ; PetroChina Projects ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Chinese Scholarship Council (CSC) ; Chinese Scholarship Council (CSC) ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China ; China National Science and Technology Major Project ; China National Science and Technology Major Project ; PetroChina Projects ; PetroChina Projects ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Chinese Scholarship Council (CSC) ; Chinese Scholarship Council (CSC) ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China ; China National Science and Technology Major Project ; China National Science and Technology Major Project ; PetroChina Projects ; PetroChina Projects ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Chinese Scholarship Council (CSC) ; Chinese Scholarship Council (CSC) ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China ; project Evaporite-Associated Carbonate Reservoirs in Sichuan Basin: Lower Cambrian Longwangmiao Formation and Middle Triassic Leikoupo Formation - Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/92936]  |
| 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, Key Lab Petr Resources Res, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Explorat, Chengdu 610059, Sichuan, Peoples R China 4.PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Lei,Xu, Zhaohui,Shi, Shuyuan,et al. Multiphase dolomitization of a microbialite-dominated gas reservoir, the middle Triassic Leikoupo Formation, Sichuan Basin, China[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2019,180:820-834. |
| APA | Jiang, Lei,Xu, Zhaohui,Shi, Shuyuan,&Liu, Wei.(2019).Multiphase dolomitization of a microbialite-dominated gas reservoir, the middle Triassic Leikoupo Formation, Sichuan Basin, China.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,180,820-834. |
| MLA | Jiang, Lei,et al."Multiphase dolomitization of a microbialite-dominated gas reservoir, the middle Triassic Leikoupo Formation, Sichuan Basin, China".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 180(2019):820-834. |
入库方式： OAI收割
来源：地质与地球物理研究所
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