Article
Geosciences, Multidisciplinary
Fengnian Chang, Shaochun Dong, Hongwei Yin, Zhenyun Wu
Summary: This study used satellite images to detect and map the surface deformation in the Kuqa foreland fold-thrust belt. The results show that the belt is still undergoing compression and shortening, driving the movement of underground salt and resulting in various spatial-temporal surface deformation patterns.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Wen-Xin Yang, Dan-Ping Yan, Liang Qiu, Michael L. Wells, Jian-Meng Dong, Tian Gao, Zhi Zhang, Hongxu Mu, Xinwen Wang, Fangyue Wang
Summary: The study investigated the structural styles and evolution of the Nanpanjiang fold-thrust belt and foreland basin system in southwestern South China during the Indosinian orogenic belt growth. The results revealed fault-related folds with deep duplexes and shallow imbricates, indicating multi-staged thrusting during the Indosinian orogeny. The kinematic and dynamic relationship between the fold-thrust belt and foreland basin during this tectonic event was described as a progressive deformation sequence.
Article
Geochemistry & Geophysics
Junpeng Wang, Lianbo Zeng, Xianzhang Yang, Chun Liu, Ke Wang, Ronghu Zhang, Xiguang Chen, Yuanji Qu, Stephen E. Laubach, Qiqi Wang
Summary: The ultra-deep low-porosity sandstone oil and gas reservoirs in the Kuqa thrust belt of Tarim Basin are important sources of natural gas supply in China. Fracture types and patterns, including shear-mode and opening-mode fractures, were described using outcrops from four exposed folds in the study area. Fracture distribution, density, aperture size, and kinematics varied between different locations on the folds, with shear-mode fractures dominating the flanks and opening-mode fractures localized in fold hinges.
Article
Geochemistry & Geophysics
Miaomiao Su, Denglin Han, Ronghu Zhang, Qinglu Zeng, Zhenzhen Lin, Chenchen Wang
Summary: The study investigates the reservoir characteristics and microstructure differences of the Cretaceous Bashijiqike Formation in various stress sections using comprehensive analysis and various techniques. The results show that the physical properties and reservoir space of the ultradeep reservoir have interlayer differences and are influenced by tectonic compression.
Article
Geosciences, Multidisciplinary
Bing Wang, Nansheng Qiu, Ralf Littke, Sebastian Amberg, Zhengdong Liu
Summary: This study explores the relationship between structural evolution and petroleum system development in the eastern Kuqa Depression. Structural restoration and petroleum system modeling reveal the significant influence of tectonics on hydrocarbon accumulations, with traps in the Dina Fold Belt and Dibei Slope identified as prospective targets.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Energy & Fuels
Rong-Hu Zhang, Ke Wang, Qing-Lu Zeng, Chao-Feng Yu, Jun-Peng Wang
Summary: This study investigates the effectiveness of tectonic fractures in ultra-deep reservoirs in the Kuqa foreland thrust zone and discusses their geological significance for oil and gas exploration and development. The effectiveness of fractures is mainly controlled by fracture aperture and filling degrees, with effective fractures significantly increasing reservoir permeability.
Article
Energy & Fuels
Afzal Mir, Muhammad Rustam Khan, Ali Wahid, Muhammad Atif Iqbal, Reza Rezaee, Syed Haroon Ali, Yucel Deniz Erdal
Summary: This study analyzed the petroleum system of the Bannu Basin in Pakistan, a foreland basin of the Himalayan fold and thrust belts. The study divided the area into three zones and integrated seismic and well log data. The results showed higher sedimentation levels and abrupt sedimentation due to Himalayan orogeny. Potential source rocks and local faults were identified as potential traps for hydrocarbon preservation. Specific formations were identified as potential reservoir rocks in different zones. Post-Miocene sedimentation was found to be a significant event for hydrocarbon generation and accumulation.
Article
Geosciences, Multidisciplinary
Changyu Fan, Gang Wang, Zhenliang Wang, Xiaojie Han, Jie Chen, Kualie Zhang, Baoshou Zhang
Summary: Accurate prediction of overpressure before drilling is crucial for hydrocarbon exploration. This study developed a method to predict overpressure by restoring loading curves of different rock formations in a fold-thrust belt and calculating the vertical effective stress offset using fluid pressure measurements. The relationship between Delta VES, FDIST, and Delta H was found to be essential for predicting overpressure in areas with intense tectonic compression.
Article
Geosciences, Multidisciplinary
Ahmed Abdelmaksoud, Mohammed Y. Ali, Aisha Al Suwaidi, Hemin Koyi
Summary: The hydrocarbon potential of the UAE-Oman mountains fold-and-thrust belt (FTB) has not been extensively studied, resulting in a poor understanding of the petroleum systems in this region. This study aims to address this knowledge gap by evaluating the petroleum system of the FTB using basin modeling approaches and correlating hydrocarbon occurrences with their source rock. The findings identify the Silurian, Upper Cretaceous, Paleocene-Eocene, and Oligocene formations as the primary source rocks in the study area. The Cenozoic source rocks exhibit variable Total Organic Carbon (TOC) content and expulsion efficiency, with increasing maturity towards the north. Late Cretaceous and Oligocene-Miocene compressional events influenced the present-day distribution of maturity, and hydrocarbon expulsion from the Silurian source rocks initiated during the Middle-Late Jurassic.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Blessing Adeoti, A. Alexander G. Webb
Summary: The Kuqa fold-thrust belt in China is known for its diverse surface salt structures. By studying the geomorphological features of lateral ridge propagation along the belt, researchers have found evidence supporting the formation of the belt through a combination of detachment folding and source-fed thrust faults.
JOURNAL OF STRUCTURAL GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Monia Sabbatino, Stefano Tavani, Stefano Vitale, Kei Ogata, Amerigo Corradetti, Lorenzo Consorti, Ilenia Arienzo, Anna Cipriani, Mariano Parente
Summary: The migration velocity of the central-southern Apennine fold-thrust belt-foreland basin system has been found to remain relatively constant over the past 25 million years, with new high-resolution age data identifying this phenomenon.
Article
Geosciences, Multidisciplinary
Di Xiao, Long Wen, Ya Zhang, Chen Xie, Xiucheng Tan, Jian Cao
Summary: The study investigated the middle Permian Qixia Formation in the piedmont of the Longmenshan Mountains in northwestern Sichuan Basin, China. It found that natural gas in the thrust belt was derived from lower Cambrian strata by oil cracking, while the thrust front and forebulge belts had high natural gas content and good preservation due to less deformation in the area. The research suggests that hydrocarbon resources in the (ultra-)deep strata in the basin-mountain transition zone could be an important exploration target globally.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Feng Li, Xiaogan Cheng, Hanlin Chen, Xuhua Shi, Yong Li, Julien Charreau, Ray Weldon
Summary: By interpreting three high-resolution seismic reflection profiles, we estimated the magnitude and distribution of Cenozoic shortening across the Eastern Kuqa fold-and-thrust belt (FTB) in the South Tian Shan foreland. The results show that the total crustal shortening of the Kuqa FTB increases from east to west, and the distribution of shortening within secondary structural belts gradually decreases basinward. The propagation rates of the deformation front of the Kuqa FTB indicate an episodic propagation with an acceleration around 12 Ma. Compared to other foreland FTBs around the Tian Shan, the Kuqa FTB shows significant spatio-temporal variations in the propagation stages and related rates.
Article
Geosciences, Multidisciplinary
G. Behzad Zamani
Summary: Stress measurement is crucial in Earth and petroleum sciences. This paper determines the stress state in the Zagros Mountains using analytical techniques and identifies stress patterns and structural control in different zones.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geochemistry & Geophysics
A. Abdelmaksoud, M. Y. Ali, M. P. Searle
Summary: The subsurface and surface structural geometries of the UAE fold-and-thrust belt and foreland basins were studied using seismic, well data, and surface geology. The study revealed the transition of the Arabian margin from a rifted passive margin to a foreland basin, with major inversion of rift faults in the northern region and possible basement origin in the southern region.
Article
Energy & Fuels
Xiaoping Liu, Ming Guan, Zhijun Jin, Jin Lai, Shanyong Chen
Summary: The Second Member of Kongdian Formation (Ek(2)) shale oil system is a set of thick organic-rich lacustrine shales with great shale oil resource potential, characterized by high organic matter abundance and low maturity. The system consists of various lithologies with high brittle mineral content, showing significant variations in physical properties and oil saturations. Tight sandstones and dolomites exhibit better exploration potential than shales, and the lower intervals of Ek(2) shale are more favorable for shale oil accumulation.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Geochemistry & Geophysics
Peng Zhang, Junwei Yang, Yuqi Huang, Jinchuan Zhang, Xuan Tang, Chengwei Liu
Summary: This study investigates the heterogeneity of the Longmaxi Formation shale from well Ld1 in western Hunan and Hubei. The shale is found to be composed mainly of siliceous shale, mixed shale, and clayey shale, with strong heterogeneity in terms of organic matter occurrence, mineral composition, microstructure, and pore types. The shale exhibits strong adsorption and gas storage capacity, but the pore structure is complex and connectivity is poor. This study emphasizes the importance of reservoir reformation measures during shale gas exploitation.
Article
Geosciences, Multidisciplinary
Juye Shi, Zhijun Jin, Quanyou Liu, Tan Zhang, Tailiang Fan, Zhiqian Gao
Summary: Exploration of shale oil in China has shown that laminated shales are favorable lithofacies for effective shale oil production. A study on Paleogene organic-rich shales in the Dongying Sag, Bohai Bay Basin revealed two categories and six types of laminar structures, with those having high laminar continuity exhibiting better reservoir and oil-bearing properties compared to those with poor continuity. Shales with thick parallel and wavy laminar structures were found to have favorable petrophysical parameters for shale oil exploration in the area.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Energy & Fuels
Gang Zhao, Zhijun Jin, Wenlong Ding, Guangxiang Liu, Jinbiao Yun, Ruyue Wang, Guanping Wang
Summary: The study on fractures in the Wufeng-Longmaxi Formation in Hunan Province reveals that these fractures can be divided into different types based on their combination characteristics and roughness. The fractures mainly occurred in the late Yanshanian-Himalayan period and experienced repeated processes of splitting, healing, and re-splitting. The gas migration and enrichment in these fractures play a key role in the distribution and preservation of shale gas.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Review
Geosciences, Multidisciplinary
Quanyou Liu, Peng Li, Zhijun Jin, Yuewu Sun, Guang Hu, Dongya Zhu, Zhenkai Huang, Xinping Liang, Rui Zhang, Jiayi Liu
Summary: The study focused on the impact of volcanic activity on paleoproductivity and preservation conditions in lacustrine shale formation. The results indicated that volcanic activity enhanced ancient productivity and promoted organic matter preservation.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Ming Guan, Xiaoping Liu, Zhijun Jin, Jin Lai, Jie Liu, Biao Sun, Tian Liu, Zuxian Hua, Wen Xu, Honglin Shu, Gaocheng Wang, Mengcai Liu, Yufeng Luo
Summary: The heterogeneity and lack of proper parameters in lacustrine shale oil occurrences hinder the assessment of shale oil reserves. This study characterized shale oil content using petroleum compositional characteristics and determined its spatial occurrence. The controlling factors of shale oil content were also discussed. This work has implications for optimizing exploration targets and evaluating resource potential.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Ziheng Guan, Xuan Tang, Bo Ran, Shaobin Guo, Jinchuan Zhang, Kefeng Du, Ting Jia
Summary: This study used machine learning algorithms to complete well-logging data for 50 wells and found that XGBoost algorithm has better performance in well-log completion with sufficiently optimized parameters based on experience, while DNN algorithm has advantages when there are abundant well-log data sets in the training sets. RF algorithm has better accuracy, wider expansibility, higher efficiency, lower computation requirements, and better generalization ability compared to XGBoost and DNN algorithms.
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2022)
Article
Geochemistry & Geophysics
Bin Zhang, Zhi-Guo Mao, Yi-Lin Yuan, Cong Yu, Zhong-Yi Zhang, Xuan Tang, Yu-Xin Shi, Xiao-Liang Chen
Summary: We systematically analyze the geochemical characteristics of source rocks of the Yan Chang Formation in the Ordos Basin to reveal the influence mechanisms of the volcano on lacustrine organic matter enrichment.
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2022)
Editorial Material
Geochemistry & Geophysics
Xuan Tang, Xiangzeng Wang, Shu Jiang, Quanyou Liu, Zhanli Ren, Wen Zhou, Bin Zhang, Hongliu Zeng, Chaoli Lan
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2022)
Article
Chemistry, Multidisciplinary
Fengzan Zheng, Xuan Tang, Kun Yuan, Tuo Lin, Mingxin You, Jialiang Niu, Yiyi Zi, Yutao Liang
Summary: China has achieved breakthroughs in shale gas production and discovered active shale oil and gas shows in Southern China. Detailed research on the sedimentology and organic matter enrichment mechanisms in these areas is crucial for understanding sedimentology and hydrocarbon exploration.
Article
Energy & Fuels
Zhen Li, Jinchuan Zhang, Xuanxue Mo, Zhongzheng Tong, Xianghua Wang, Dongsheng Wang, Zexin Su, Xuan Tang, Dajian Gong
Summary: This study investigates the storage behaviors of CH4 and CO2 in organic-rich shale by examining the angstrom-scale pores in 14 Lower Cambrian Niutitang shale samples. The results reveal the presence of different types of pores and their influence on gas storage. The study shows that CO2 has a higher storage volume in the angstrom scale than CH4, while CH4 has a higher ratio of the filling volume to the maximum adsorbed capacity. Additionally, higher pore heterogeneity leads to stronger CH4 and CO2 storage capacities.
Article
Geochemistry & Geophysics
Chenhui Wu, Xuan Tang, Xiaoguang Li, Bin Zhang, Pei Li, Zaixing Jiang, Yang Liu, Xiangfei Kong, Kefeng Du, Jinchuan Zhang
Summary: This study focused on the pore fluid distribution and behavior in shale pore system. Through the analysis of samples from the Chang 7 shale in the Ordos Basin, it was found that the pore channels in shale are mainly composed of clay mineral pores and micro-pores. Different types of pore fluids were found to occupy different pore-size ranges, with water occupying the mineral mesopores and oil and asphaltenes occupying organic-matter-hosted mesopores. The presence of pore fluid significantly impacts the pore structures of shale.
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2023)
Article
Energy & Fuels
Ziheng Guan, Wei Liu, Xuewu Chen, Weibo Ma, Shaobin Guo, Xuan Tang
Summary: This study investigates the mineral composition, organic geochemical characteristics, and pore characteristics of low-mature shale samples. The results indicate that shale oil mobility is mainly controlled by the distribution of large-sized pores. Total organic carbon (TOC) content and lithofacies greatly influence the distribution of oil mobility in the shale. A new index is proposed to evaluate the content of shale oil, in situ oil saturation index (OSI), and multiple isothermal pyrolysis parameter S2-2.
Article
Chemistry, Multidisciplinary
Xiaoming Li, Xuan Tang, Shaobin Guo, Jinchuan Zhang, Ende Deng, Chaoli Lan
Summary: This study conducted a detailed survey of the outcrop and drill cores in the western Guizhou region to examine the distribution and geochemical characteristics of the Longtan Formation. The results showed that the shale in the Longtan Formation has a significant amount of total organic carbon and is mainly composed of vitrinite, clay minerals, and brittle minerals. The study identified eight types of lithofacies and six lithofacies assemblages, representing different sedimentary environments. The sedimentary model of the Longtan Formation in western Guizhou was predominantly deltaic and tidal flat systems.
Article
Energy & Fuels
Xiao-Ping Liu, Ming Guan, Zhi-Jun Jin, Zhe Cao, Jin Lai, Lun-Ju Zheng, Wen-Qi Li, Biao Sun, Shan-Yong Chen
Summary: Pyrolysis experiments were conducted on lacustrine organic-rich shale to investigate the impact of hydrocarbon generation on shale pore structure evolution. The results show that thermal evolution controls the transformation of organic matter, characteristics of hydrocarbon products, and changes in pore structure.
Article
Geosciences, Multidisciplinary
Weijiao Ma, Jinbu Li, Min Wang
Summary: The petroleum resource assessment obtained from laboratory tests on old core samples tends to underestimate the in situ resources. This study investigates the hydrocarbon loss and restoration by comparing preserved and exposed core samples. It is found that previous studies have severely underestimated the in situ hydrocarbon potential due to factors such as sample crushing and crucible waiting. A new restoration model is proposed to compensate for these losses.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Shaoyun Chen, Yongqiang Yang, Longwei Qiu, Xiaojuan Wang, Erejep Habilaxim
Summary: Quartz cement is an important authigenic mineral in the tight sandstones of the Shaximiao Formation in the Sichuan Basin. This study analyzed the silicon sources of the quartz cement using mineralogical, fluid inclusion, and geochemical data. The results showed that smectite alteration and dissolution of aluminosilicate minerals were the primary sources of silicon for quartz cementation. Contributions from volcanic material hydrolysis and pressure solution were relatively minor. The presence of chlorite films inhibited the development of quartz overgrowths and had minimal impact on reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xing Jian, Ping Guan, Ling Fu, Wei Zhang, Xiaotian Shen, Hanjing Fu, Ling Wang
Summary: This study presents a synthesis of new detrital zircon dating results and published data from the Cenozoic Qaidam basin, revealing the spatiotemporal variation of detrital zircon age populations and supporting models of synchronous deformation in northern Tibet. The study emphasizes the importance of considering textural and sedimentological parameters in zircon provenance interpretations, as well as the need for integrated provenance analysis involving other detritus components.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
A. Peketi, G. Sriram, A. Mazumdar, P. Dewangan, A. Zatale, V. Rajurkar, Gayatri Shirodkar, V. Mahale, V. Yatheesh
Summary: This study investigates 13 submarine seamounts in the southern Andaman volcanic arc and observes evidence of hydrothermal activity in one of the seamounts. The evidence includes plumes rich in dissolved gases, live chemosymbiotic organisms, and the deposition of neoforming minerals. These observations suggest the development of a new hydrothermal field in the least explored Andaman Sea.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Yanxian Zhu, Zhiliang He, Xiaowen Guo, Long Li, Sheng He, Jian Gao, Shuangjian Li, Huili Li
Summary: This study investigates the fluid evolution history of the hydrothermal dolomite reservoir in the Middle Permian Maokou Formation in the Sichuan Basin. The results reveal the diagenetic sequences, mineral origins, salinity history, and pressure evolution using various analytical techniques. The findings provide important insights into the gas charge, escape, and preservation conditions of the reservoir.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Rafaella de Carvalho Antunes, Julia Campos Guerrero, Ricardo Jorge Jahnert
Summary: This study presents a detailed sedimentary model and identifies various sedimentary facies associations in the coquina deposits of the Itapema Formation in the offshore pre-salt Buzios Field of the Santos Basin. These facies associations were primarily influenced by waves and currents and reflect a complex depositional system.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Kang Meng, Tongwei Zhang, Deyong Shao, Xiuyan Liu, Hui Song, Heng Peng
Summary: In this study, an integrated method of measuring optical reflectance and Raman spectroscopy is proposed to accurately determine the thermal maturity of Lower Cambrian shales in South China. The results show that this method is reliable and effective, and it has important implications for analyzing overmature shale.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Mohamed A. K. El-Ghali, Olga Shelukhina, Iftikhar Ahmed Abbasi, Mohamed S. H. Moustafa, Osman Salad Hersi, Numair A. Siddiqui, Khalid Al-Ramadan, Abdullah Alqubalee, Abdulwahab Muhammad Bello, Abduljamiu O. Amao
Summary: This study employs an integrated depositional and sequence stratigraphic approach to assess the control of diagenesis on reservoir porosity of a hybrid-energy delta system. The study focuses on the Barik Formation in the Haushi-Huqf region of Central Oman, which represents a highstand system tract of a hybrid-energy delta. The assessments reveal that the reservoir porosity is controlled by various degrees of diagenetic processes, including mechanically infiltrated clays and kaolinitization of silicate grains.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xiaocan Yu, Chunlian Wang, Hua Huang, Kai Yan
Summary: Oilfield brines are a significant alternative lithium resource. This study investigates the metallogenic characteristics and enrichment process of oilfield brines from the Jianghan Basin, central China using chemical and multi-isotope data. The results suggest that lithium enrichment in these brines is the result of interaction with clastic host rocks and dilution by meteoric water.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Jianghao Qiao, Xiwu Luan, Thanuja D. Raveendrasinghe, Yintao Lu, Guozhang Fan, Xinyuan Wei, Long Jin, Jian Yin, Haozhe Ma, Lushan Jiang
Summary: This study investigates the Tanintharyi passive continental margin in the Andaman Sea and reveals the potential of the Oligocene/Early Miocene carbonate platform in the region as a significant hydrocarbon reservoir. It also examines the influence of changes in sedimentary facies and the tectonic setting of the Andaman Sea on the evolution of pockmarks.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Anastasios Nikitas, Georgios Makrodimitras, Maria V. Triantaphyllou, Nikolaos Pasadakis, Kimon Christanis, Stavros Kalaitzidis, Grigoris Rousakis, Ioannis Panagiotopoulos, Alexandra Gogou, Alexandros Papadopoulos, Efthimios Tartaras, Aristofanis Stefatos
Summary: Due to the lack of deep wells in the broader region, studying mud volcanic deposits can improve the geological understanding of the Mediterranean Ridge. In this study, biostratigraphic and geochemical analyses were performed on mud breccia deposits from five Mud Volcanoes in the central MR. The results indicate the origin of these deposits and provide insights into the source rock potential. Seismic data is also used to determine the distribution of major lithostratigraphic formations.
MARINE AND PETROLEUM GEOLOGY
(2024)