Article
Energy & Fuels
Zhang Wenbiao, Duan Taizhong, Li Meng, Zhao Huawei, Shang Xiaofei, Wang Yang
Summary: This study focuses on the types and characteristics of Ordovician fault-controlled karst reservoir architectures in the Tuoputai area of the Tahe oilfield, using various data analysis methods. Different levels of architectural elements are identified based on the concept of genetic geologic body, with specific characterization techniques optimized for each element. The interpretation and characterization technology for fault-controlled karst reservoirs in three-dimensional space has been developed, complementing the development theory and technologies for this type of reservoirs in the Tahe oilfield.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
Article
Energy & Fuels
Lei Qun, Yang Zhanwei, Weng Dingwei, Liu Hongtao, Guan Baoshan, Cai Bo, Fu Haifeng, Liu Zhaolong, Duan Yaoyao, Liang Tiancheng, Ma Zeyuan
Summary: Based on the analysis of low efficiency and production after fracturing in ultra-deep tight reservoirs, the study proposes technological methods for creating complex fracture networks. Through theoretical study and physical simulation experiments, the mechanical conditions for forming these fracture networks are determined. The effectiveness of different fracturing techniques is verified, providing theoretical support for improving stimulated reservoir volume in ultra-deep tight reservoirs. New fracturing technologies and fluid systems have achieved remarkable results in field application.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Geosciences, Multidisciplinary
Xingliang Deng, Jiajun Chen, Peng Cao, Yintao Zhang, Xiao Luo, Shaoying Chang, Jinlong Shen, Yifan Du, Mengxiu Wang
Summary: This study investigates the geometry and kinematic evolution of the F(I)17 fault zone in the Fuman oilfield using high-resolution 3D seismic reflection survey and borehole data. The study reveals that large-scale fault-controlled fracture-cave reservoirs are distributed in wider fault zones and reservoirs linked by the same shear faults show better internal connectivity.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Energy & Fuels
Yongfeng Zhu, Yintao Zhang, Xingxing Zhao, Zhou Xie, Guanghui Wu, Ting Li, Shuai Yang, Pengfei Kang
Summary: This study examines the effects of fault segmentation on oil and gas compartmentalization and migration in the ultra-deep Fuman Oilfield through fault modeling and fluid analysis. The results demonstrate that fault segmentation leads to non-connected reservoirs and fluid variations along the fault strike, suggesting that fault segmentation plays a significant role in the varied oil accumulation along the strike-slip fault zone.
Article
Geosciences, Multidisciplinary
Wenyuan Yan, Ming Zha, Jiangxiu Qu, Xiujian Ding, Qinglan Zhang
Summary: Deformation bands widely formed in high-porous rocks in the Triassic period are studied using various techniques, showing that they were mainly formed during the Yanshanian and Himalayan periods under different temperature and pressure conditions, with their quantity increasing with the distance of thrust faults. Microscopic analysis revealed the relationship between deformation bands and microfractures, indicating an improved reservoir seepage capacity induced by intragranular microfractures.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Energy & Fuels
Yang Peng, Liu Keyu, Li Zhen, Mcinnes Brent Ian Alexander, Liu Jianliang
Summary: Based on various analyses, the study systematically determines the charge and evolution history of the YJ1X ultra-deep oil reservoir in the southwestern part of the Tabei Uplift. It reveals that the reservoir oil, free oil, and inclusion oil have similar characteristics and maturities, suggesting a common marine source. The study also identifies two types of oil inclusion assemblages in the reservoir and demonstrates that the reservoir experienced one oil charge during the Early Devonian and has been well preserved since.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Energy & Fuels
Yawen Zhao, Guanghui Wu, Yintao Zhang, Nicola Scarselli, Wei Yan, Chong Sun, Jianfa Han
Summary: The largest carbonate condensate field in China has been discovered in the central Tarim Basin. Research shows that the development of strike-slip faults has affected the formation of the reef-shoal reservoirs, resulting in increased porosity and permeability in the fault damage zones. The fractured reservoirs in proximity to strike-slip fault activity are considered to be a major target for commercial exploitation.
Article
Geosciences, Multidisciplinary
Chong Sun, Fuxiao Shen, Zhang Wen, Yintao Zhang, Nicola Scarselli, Shiyin Li, Youliang Yu, Guanghui Wu
Summary: Understanding fault damage zones is crucial for modeling ultra-deep fractured reservoirs, but seismic detection of fracture networks in such zones remains challenging. In this study, a seismic Tensor Thickness Method is proposed for imaging ultra-strike-slip fault damage zones in the Tarim Basin. The results show that seismic methods can accurately distinguish the boundary of fault damage zones in carbonate rock, consistent with borehole data. The study also reveals a linear correlation between fault damage zone width and throw, suggesting the influence of fault interaction and overlapping in abnormally wide zones. The findings have implications for fractured reservoir characterization in deep carbonate rocks elsewhere.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Shen Wang, Hua Liu, Xingliang Deng, Yongfeng Zhu, Yintao Zhang, Shan Zhao, Yanhua Su
Summary: This study examines the genetic mechanism of oil and gas phase states in the Fuman oilfield of Tarim basin. The results show that multi-period differential charging and spatial differential cracking are the main factors influencing the current oil and gas phase states.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Energy & Fuels
Wu Guanghui, Ma Bingshan, Han Jianfa, Guan Baozhu, Chen Xin, Yang Peng, Xie Zhou
Summary: The origin and growth mechanisms of strike-slip faults in the Tarim Basin are influenced by multiple stages of development and inherited growth, as well as regional and localized field stress, pre-existing structures, and lithofacies differences.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
Article
Energy & Fuels
Ke Xu, Zhenzhong Cai, Hui Zhang, Guoqing Yin, Zhimin Wang, Lu Fang, Haiying Wang, Ziwei Qian, Wei Zhang, Shujun Lai, Wei Zhao
Summary: Through large-scale rock mechanical experiments, the deformation and connectivity mechanism of fractures in ultradeep fault-controlled carbonate reservoirs were revealed. Geomechanical modeling clarified the in situ stress field and fracture activity distribution law of these reservoirs. The study showed that different well trajectories and water injection schemes can significantly affect fracture activity and cavity connectivity. High-pressure water injection can activate preexisting fractures, extend them, and promote interconnection of fault-controlled fracture-cave bodies. The method significantly increased oil production and provides a good theoretical basis and technical support for the development of ultradeep fault-controlled oil reservoirs.
ENERGY SCIENCE & ENGINEERING
(2023)
Article
Energy & Fuels
Jin Su, Xiaomei Wang, Haijun Yang, Fang Yu, Yong Li, Sihong Ma, Caiyun Wei, Na Weng, Yupeng Yang
Summary: Research has shown that deep carbonate reservoirs in the Tarim Basin are primarily dominated by porosities, fractures, and hydrothermal minerals such as fluorite and pyroxenite. Burial dissolution and thermohydrology along strike-slip faults have greatly contributed to the formation of these reservoirs, while also controlling the accumulation and properties of hydrocarbons in the deep carbonates of the basin. Additionally, oil-cracking, thermochemical sulfate reduction, and gas-washing fractionation are identified as main factors controlling the sequential accumulation of various hydrocarbons in this area.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Jiaqing Liu, Zhong Li, Xu Wang, Lei Jiang, Yunxian Feng, Malcolm W. Wallace
Summary: This study deciphers the tectonic-fluid evolution history of fractures in the Ordovician carbonates in the Tarim Basin by analyzing different stages of void-filling calcite cements. It highlights the importance of fault-related fluid circulation in the development of hydrocarbon reservoirs.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Fei Ning, Huixi Lin, Cunjian Zhou, Jinbiao Yun, Peng Li, Haiming Song
Summary: Strike-slip faults have been proven to be closely linked to hydrocarbon accumulation, making them important zones for hydrocarbon accumulation. Through detailed analyses of seismic data, tectonic evolution, and observations, characteristics of two types of reservoirs in the central Tarim Basin were delineated to clarify the controlling effects of strike-slip faults on reservoirs.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Energy & Fuels
Guoqing Yin, Kongyou Wu, Wei Ju, Yun Qin, Ziwei Qian, Ke Xu, Zhongyuan Lu, Peng Wang, Xiaobai Liang, Yan Liang
Summary: The present-day in-situ stress field in the Ordovician carbonate reservoir in the Fuman Oilfield of Tarim Basin is predicted and analyzed through well log calculation and geomechanical numerical modeling. The study reveals the dominant stress orientations, heterogeneous stress distribution, and the stability of natural fractures under the current stress state. The results provide valuable geomechanical references for further oil and gas development in the Fuman Oilfield.
FRONTIERS IN ENERGY RESEARCH
(2023)