Dabei gas field
| Dabei | |
|---|---|
| Country | China |
| Region | Xinjiang |
| Offshore/onshore | onshore |
| Operator | China National Petroleum Corporation |
| Field history | |
| Discovery | 2006 |
| Start of production | 2007 |
| Production | |
| Current production of gas | 13.7×106 m3/d 479.5×106 cu ft/d 5×109 m3/a (180×109 cu ft/a) |
| Estimated gas in place | 150×109 m3 5.25×1012 cu ft |
The Dabei gas field is a natural gas field located in the Kuqa Subbasin in Xinjiang, China. Discovered in 2006, it was developed by the China National Petroleum Corporation, determining it to have initial total proven reserves of around 5.25 trillion ft3 (150 km3). It began production of natural gas and condensates in 2007, with a production rate of around 479.5 million ft3/day (13.7×105 m3).[1] It is the deepest and most complex continental condensate gas field in China.[2]
Overpressure evolution of the reservoir indicates that an intense tectonic compression began at circa 5 Ma, which caused thrust activation and concomitant oil charge into the relatively porous part of the reservoir. Subsequent tectonic compression caused uplift and erosion associated with thrusting at the end of the Kuqa Formation deposition (ca. 3 Ma), with thrust faults and fractures acting as major migration pathways for the gas accumulation in the already-tight sandstone reservoir resulting from both compaction and tectonic compression.[3]
Location and structure
Since the late Hercynian period, the basin has undergone several evolutionary stages, such as late Permian-Triassic paleo-foreland basin, Jurassic-Paleogene extensional depression basin and Neogene-quaternary intracontinental foreland basin.[4] It eventually developed into a meso-Cenozoic superimposed foreland basin on the basis of Paleozoic passive continental margin. The Kuqa depression is adjacent to the southern Tianshan orogenic belt in the north and the Tabei Uplift in the south. It is composed of the Northern monoclinal belt, the Kelasu tectonic belt, the Yiqikelike tectonic belt, the Qiulitage tectonic belt, the Southern slope belt, the Baicheng sag, the Yangxia sag and the Wushi sag.[5]
References
- ^ "China Finds 2nd Biggest Gas Field". china.org.cn. 2006. Retrieved 2013-06-03.
- ^ Zhu, Guangyou; Chi, Linxian; Zhang, Zhiyao; Li, Tingting; Yang, Haijun; Chen, Weiyan; Zhao, Kun; Yan, Huihui (2019). "Composition and origin of molecular compounds in the condensate oils of the Dabei gas field, Tarim Basin, NW China". Petroleum Exploration and Development. 46 (3): 504–517. doi:10.1016/S1876-3804(19)60031-5.
- ^ Guo, Xiaowen; Liu, Keyu; Jia, Chengzao; Song, Yan; Zhao, Mengjun; Zhuo, Qingong; Lu, Xuesong (2016). "Hydrocarbon accumulation processes in the Dabei tight-gas reservoirs, Kuqa Subbasin, Tarim Basin, northwest China". AAPG Bulletin. 100 (10): 1501–1521. doi:10.1306/04151614016. ISSN 0149-1423.
- ^ Qin, Xiang; Chen, Xuanhua; Shao, Zhaogang; Zhang, Yiping; Wang, Yongchao; Li, Bing (2022-07-01). "Cenozoic multi-phase intracontinental deformation of the Tianshan Range (NW China): Constraints from detrital zircon provenance and syn-tectonic sedimentation of the Kuqa Depression". Journal of Asian Earth Sciences. Tectonics and Sedimentology of Accretionary and Collisional Orogens. 232 105183. doi:10.1016/j.jseaes.2022.105183. ISSN 1367-9120.
- ^ Xu, Xiao-Tong; Zeng, Lian-Bo; Dong, Shao-Qun; Li, Hai-Ming; Liu, Jian-Zhong; Ji, Chun-Qiu (2025-09-01). "The characteristics and controlling factors of high-quality reservoirs of ultra-deep tight sandstone: A case study of the Dabei Gas Field, Tarim Basin, China". Petroleum Science. 22 (9): 3473–3496. doi:10.1016/j.petsci.2025.03.033. ISSN 1995-8226.