Strike-slip faults and hydrocarbon accumulation in the eastern part of Fuman oilfield, Tarim Basin

被引：0
|
作者：
Song X. [1 ,2 ]
Chen S. [1 ,2 ]
Xie Z. [3 ]
Kang P. [3 ]
Li T. [3 ]
Yang M. [1 ,2 ]
Liang X. [1 ,2 ]
Peng Z. [3 ]
Shi X. [3 ]
机构：
[1] State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum（Beijing）, Beijing
[2] Basin and Reservoir Research Center, China University of Petroleum, Beijing
[3] Tarim Oilfield Company, PetroChina, Xinjiang, Korla
来源：
Oil and Gas Geology | 2023年 / 44卷 / 02期
关键词：
Fuman oilfield; layered differential deformation; multi-stage tectonic evolution; oil and gas accumulation; strike-slip fault; Tarim Basin;
D O I：
10.11743/ogg20230207
中图分类号：
学科分类号：
摘要：
The strike-slip faults in the eastern Fuman oilfield have been targeted for Ordovician ultra-deep carbonate reservoirs in the Tarim Basin. However, they are difficult to be identified and interpreted with available data due to their weak activity, thus it is essential to deeply understand their development, evolution and reservoir-controlling characteristics. Based on the newly acquired 3D seismic data of the oilfield, three typical trunk faults（FI10, FI12 and FI17）are selected for a fine interpretation to clarify the activity characteristics and main faulting stages of the strike slip faults. Combined with oil and gas properties and reservoir-forming stages, the study analyzed the relationship between fault activity characteristics and hydrocarbon accumulation to deepen the understanding of fault development characteristics and hydrocarbon distribution in the area as well as clarifying the coupling relationship between multi-stage evolution of faults and multi-stage accumulation of hydrocarbons. The results show that the strike-slip faults in the Fuman oilfield has the characteristics of vertical stratified differential deformation, which can be divided into four tectonic deformation layers from bottom up：the subsalt basement tectonic layer（below T⋲2）, salt tectonic layer（T⋲2-T⋲3）, carbonate rock tectonic layer（T⋲3-TO3t）and clastic rock tectonic layer（above TO3t）. The active faulting can be divided into three stages：the early Caledonian, the third episode of the middle Caledonian and the late Caledonian-Hercynian, among which the third episode of the middle Caledonian is the main active faulting stage. Combined with the coupling relationship between the difference of oil and gas properties, the production performance of oil wells, the characteristics of fault activity and the period of hydrocarbon accumulation, comprehensive analyses show that faulting affects the opening of vertical migration pathway and controls the vertical hydrocarbon migration. The faulting lasts for a long time, which keeps the hydrocarbon migration pathways open and is conducive to the continuous charging of late highly mature oil and gas, resulting in fault-controlled reservoirs characterized by high hydrocarbon charging intensity, high maturity and high gas-oil ratio. © 2023 Editorial Department of Oil and Gas Geology. All rights reserved.
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页码：335 / 349
页数：14
相关论文
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  • [1] SYLVESTER A G., Strike-slip faults［J］, GSA Bulletin, 100, 11, pp. 1666-1703, (1988)
  • [2] WANG Qinghua, YANG Haijun, WANG Rujun, Et al., Discovery and exploration technology of fault-controlled large oil and gas fields of ultra-deep formation in strike slip fault zone in Tarim Basin［J］, China Petroleum Exploration, 26, 4, pp. 58-71, (2021)
  • [3] YANG Xuewen, TIAN Jun, WANG Qinghua, Et al., Geological understanding and favorable exploration fields of ultra-deep formations in Tarim Basin［J］, China Petroleum Exploration, 26, 4, pp. 17-28, (2021)
  • [4] YANG Haijun, DENG Xingliang, ZHANG Yintao, Et al., Great discovery and its significance of exploration for Ordovician ultra-deep fault-controlled carbonate reservoirs of Well Manshen 1 in Tarim Basin［J］, China Petroleum Exploration, 25, 3, pp. 13-23, (2020)
  • [5] TIAN Jun, YANG Haijun, ZHU Yongfeng, Et al., Geological conditions for hydrocarbon accumulation and key technologies for exploration and development in Fuman Oilfield, Tarim Basin［J］, Acta Petrolei Sinica, 42, 8, pp. 971-985, (2021)
  • [6] JIANG Tongwen, CHANG Lunjie, DENG Xingliang, Et al., Geological understanding and evaluation technology of fault controlled carbonate reservoir development：A case study of the Tarim Basin［J］, Natural Gas Industry, 41, 3, pp. 1-9, (2021)
  • [7] YANG Lv, WU Guanghui, ZHU Yongfeng, Et al., Key oil accumulation periods of ultra-deep fault-controlled oil reservoir in northern Tarim Basin, NW China［J］, Petroleum Exploration and Development, 49, 2, pp. 249-261, (2022)
  • [8] DENG Shang, LI Huili, ZHANG Zhongpei, Et al., Characteristics of differential activities in major strike-slip fault zones and their control on hydrocarbon enrichment in Shunbei area and its surroundings, Tarim Basin［J］, Oil & Gas Geology, 39, 5, pp. 878-888, (2018)
  • [9] LIU Yuqing, DENG Shang, Structural analysis of intraplate strike-slip faults with small to medium displacement：A case study of the Shunbei 4 fault, Tarim Basin［J］, Journal of China University of Mining & Technology, 51, 1, pp. 124-136, (2022)
  • [10] YANG Haijun, WU Guanghui, HAN Jianfa, Et al., Structural analysis of strike-slip faults in the Tarim intracratonic basin［J］, Chinese Journal of Geology, 55, 1, pp. 1-16, (2020)
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