Multiphase dolomitization of deeply buried Cambrian petroleum reservoirs, Tarim Basin, north-west China
文献类型：期刊论文
| 作者 | Jiang, Lei1,2,3; Cai, Chunfang1,4; Worden, Richard H.2; Crowley, Stephen F.2; Jia, Lianqi1; Zhang, Ke5; Duncan, Ian J.3 |
| 刊名 | SEDIMENTOLOGY
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 63期号:7页码:2130-2157 |
| 关键词 | C/O/Sr isotopes Cambrian carbonate reservoir dolomitization fluid inclusions hydrothermal fluids restricted lagoon |
| DOI | 10.1111/sed.12300 |
| 文献子类 | Article |
| 英文摘要 | Cambrian dolostone reservoirs in the Tarim Basin, China, have significant potential for future discoveries of petroleum, although exploration and production planning is hampered by limited understanding of the occurrence and distribution of dolomite in such ancient rocks buried to nearly 8 km. The study herein accessed new drill core samples which provide an opportunity to understand the dolomitization process in deep basins and its impact on Cambrian carbonate reservoirs. This study documents the origin of the dolostone reservoirs using a combination of petrology, fluid-inclusion microthermometry, and stable and radiogenic-isotopes of outcrop and core samples. An initial microbial dolomitization event occurred in restricted lagoon environments and is characterized by depleted delta C-13 values. Dolomicrite from lagoonal and sabkha facies, some fabric-retentive dolomite and fabric-obliterative dolomite in the peloidal shoal and reef facies show the highest delta O-18 values. These dolomites represent relatively early reflux dolomitization. The local occurrence of K-feldspar in dolomicrite indicates that some radiogenic strontium was contributed via terrigenous input. Most fabric-retentive dolomite may have precipitated from seawater at slightly elevated temperatures, suggested by petrological and isotopic data. Most fabric-obliterative dolomite, and medium to coarse dolomite cement, formed between 90 degrees C and 130 degrees C from marine evaporitic brine. Saddle dolomite formed by hydrothermal dolomitization at temperatures up to 170 degrees C, and involved the mixing of connate brines with Sr-enriched hydrothermal fluids. Intercrystalline, moldic, and breccia porosities are due to the early stages of dolomitization. Macroscopic, intergranular, vuggy, fracture and dissolution porosity are due to burial-related dissolution and regional hydrothermal events. This work has shown that old (for example, Cambrian or even Precambrian) sucrosic dolomite with associated anhydrite, buried to as much as 8000 m, can still have a high potential for hosting substantial hydrocarbon resources and should be globally targeted for future exploration. |
| WOS关键词 | THERMOCHEMICAL SULFATE REDUCTION ; TRIASSIC FEIXIANGUAN FORMATION ; CARBONATE GAS-RESERVOIRS ; CANADA SEDIMENTARY BASIN ; SICHUAN BASIN ; HYDROTHERMAL DOLOMITE ; REFLUX DOLOMITIZATION ; POROSITY EVOLUTION ; MAESTRAT BASIN ; TAZHONG AREA |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000389255200010 |
| 资助机构 | China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; Special Major Project on Petroleum Study(2016ZX05008003-040) ; Special Major Project on Petroleum Study(2016ZX05008003-040) ; Natural Science Foundation of China(41402132) ; Natural Science Foundation of China(41402132) ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035) ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035) ; China National Funds for Distinguished Young Scientists(41125009) ; China National Funds for Distinguished Young Scientists(41125009) ; Special Major Project on Petroleum Study(2016ZX05008003-040) ; Special Major Project on Petroleum Study(2016ZX05008003-040) ; Natural Science Foundation of China(41402132) ; Natural Science Foundation of China(41402132) ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035) ; International Postdoctoral Exchange Fellowship Program - Office of China Postdoctoral Council (OCPC)(20150035) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53203]  |
| 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.Chinese Acad Sci, Key Lab Petr Resources Res, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Liverpool, Dept Earth Ocean & Ecol Sci, Sch Environm Sci, Liverpool L69 3GP, Merseyside, England 3.Univ Texas Austin, Bur Econ Geol, Jackson Sch Geosci, Austin, TX 78713 USA 4.Yangtze Univ, Key Lab Explorat Technol Oil & Gas Resources, Minist Educ, Sch Water Resource & Environm, Wuhan 430100, Hubei, Peoples R China 5.PetroChina, Res Inst Petr Explorat & Dev, Tarim Oilfield Co, Xinjiang 841000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Lei,Cai, Chunfang,Worden, Richard H.,et al. Multiphase dolomitization of deeply buried Cambrian petroleum reservoirs, Tarim Basin, north-west China[J]. SEDIMENTOLOGY,2016,63(7):2130-2157. |
| APA | Jiang, Lei.,Cai, Chunfang.,Worden, Richard H..,Crowley, Stephen F..,Jia, Lianqi.,...&Duncan, Ian J..(2016).Multiphase dolomitization of deeply buried Cambrian petroleum reservoirs, Tarim Basin, north-west China.SEDIMENTOLOGY,63(7),2130-2157. |
| MLA | Jiang, Lei,et al."Multiphase dolomitization of deeply buried Cambrian petroleum reservoirs, Tarim Basin, north-west China".SEDIMENTOLOGY 63.7(2016):2130-2157. |
入库方式： OAI收割
来源：地质与地球物理研究所
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