Article
Energy & Fuels
Sebastian Waszkiewicz, Paulina Krakowska-Madejska
Summary: This paper presents a method for estimating improved maturity indicator using well logs, grouping data using cluster and neural network analysis, and utilizing resistivity log to enhance the obtained maturity indicator. The approach proved to be reliable in testing on two wells with different type and maturity of kerogen, resulting in satisfactory results that allow for potential use in formations with low organic matter content.
Article
Geosciences, Multidisciplinary
Xuewen Shi, Shujuan Kang, Chao Luo, Wei Wu, Shengxian Zhao, Di Zhu, Huanxu Zhang, Yang Yang, Zhenglu Xiao, Yong Li
Summary: This paper presents a study on the Longmaxi Formation in the Sichuan Basin, which is a significant shale gas producing formation in China. The research provides carbon isotopic data that suggest better shale gas exploration potential at the bottom of the Longmaxi Formation. The study also compares the exploration prospects in different areas and recommends further drilling based on the presence of oil cracking gas resources and better reservoir conditions.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Jianping Chen, Xulong Wang, Jianfa Chen, Yunyan Ni, Baoli Xiang, Fengrong Liao, Wenjun He, Limiao Yao, Erting Li
Summary: The identification of the origin and source of natural gas has always been a difficult and important issue, especially in the complex and diverse petroliferous sedimentary basins in China. This study established new equations to decipher the relationship between the maturity of gas source rocks and the carbon isotopic composition of methane, which is crucial for improving the geological theory of natural gas.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Energy & Fuels
Nexxys C. Herrera Sanchez, Blanca A. Toro, Ricardo Ruiz-Monroy, Thomas Gentzis, Seare Ocubalidet, Humberto Carvajal-Ortiz
Summary: This study investigated the thermal maturity of Early Paleozoic strata in Northwestern Argentina using reflected light microscopy and Rock-Eval analyses. The results showed lower maturity in the Cordillera Oriental region and higher maturity in the Puna region, possibly due to a combination of hydrothermal fluids, volcanism, and tectonic events. Further research on geothermal parameters and startigraphy is needed to validate the preliminary models and propose new approaches for the Puna region.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Saulo B. de Oliveira, Haline V. Rocha, Colombo C. G. Tassinari
Summary: This study assessed the potential of the Irati Formation shale layers in southeastern Brazil as sites for CO2 geological storage. Two potential shale gas reservoirs were identified based on organic geochemical parameters and petrography, and two locations were found to be more suitable for CO2 storage based on thermal maturity data. Therefore, a combination of organic chemistry and spatial analysis can be used as a guide to define reservoirs for CO2 storage in organic-rich shales within the Irati Formation.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Energy & Fuels
Krittibas Das, Sudip Bhattacharyya, C. P. Ramteke, Kausik Kumar Ghosh
Summary: This study conducted a comprehensive analysis on shale in the Mohuda sub-basin of the Jharia Coalfield in India, revealing the potential for shale gas generation and assessing the reservoir characteristics for future exploitation.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Gabriel A. Barberes, Rui Pena dos Reis, Nuno L. Pimentel, Andre L. D. Spigolon, Paulo E. Fonseca, Przemyslaw Karcz, Marco C. Azevedo, Maria Teresa Barata
Summary: The Baixo Alentejo Flysch Group (BAFG) is a significant stratigraphic unit in the South Portuguese Zone (SPZ) that consists of black shales with high thermal maturation, predominantly in gas zones, currently functioning primarily as a gas reservoir.
Article
Geosciences, Multidisciplinary
Yunyan Ni, Dazhong Dong, Limiao Yao, Jianping Chen, Jianli Sui, Fei Wang, Fei Liu, Jian Li, Jinhao Guo, Dan Liu, Jinliang Gao
Summary: This study conducted a detailed investigation on the hydrogen isotope characteristics of the Wufeng-Longmaxi shale in the Sichuan Basin, revealing the significant influence of gas wetness and cogenetic water medium on hydrogen isotope values.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Energy & Fuels
Lin-Qi Zhu, Jin Sun, Xue-Qing Zhou, Qing-Ping Li, Qi Fan, Song-Lin Wu, Shi-Guo Wu
Summary: This study explored the clay content, porosity, saturation, and hydrate-enriched layer identification of a logging-based hydrate reservoir using well W8 in the Qiongdongnan Basin. The study found that considering the effect of clay content on log response is necessary in the logging evaluation of hydrate reservoirs.
Article
Energy & Fuels
Wenshi Liu, Xingyang Xiong, Yulong Zhao, Chunyan Liu, Yongbin Hou, Xunchi Pu
Summary: This study assessed the feasibility of manufacturing high-strength and low-density proppants from oil-based drilling cuttings pyrolysis residues (ODPR) and red mud (RM). The effects of ODPR and RM content on the performance of the proppants were studied, and the optimum sintering condition was determined. The study also explored the sintering mechanism based on microstructural analysis of the proppants.
Article
Energy & Fuels
Rizwan Sarwar Awan, Chenglin Liu, Naseem Aadil, Qamar Yasin, Abdus Salaam, Azkar Hussain, Shangfeng Yang, Ashar Khan Jadoon, Yuping Wu, Muhammad Amar Gul
Summary: The geochemical evaluation of the Cretaceous Talhar Shale in the Lower Indus Basin of Pakistan reveals moderate to good hydrocarbon potential, making it suitable for unconventional energy exploration. Various analyses indicate characteristics favorable for hydraulic fracturing, showcasing its potential as a promising target in comparison to other global unconventional reservoirs.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Dan Li, Jian Chang, Nansheng Qiu, Jiangshan Wang, Mengran Zhang, Xian Wu, Jun Han, Huili Li, Anlai Ma
Summary: This study reconstructed the burial histories of five typical wells in the Central Tarim Basin and studied the thermal histories and hydrocarbon charging periods in the Shunbei area. The findings provide valuable insights for further exploration and resource evaluation in the region.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Environmental Sciences
Mounir Takriti, Susan E. Ward, Peter M. Wynn, Niall P. McNamara
Summary: Characterising methane (CH4) sources and their stable isotope values at the regional level is crucial for effective mitigation and accurate atmospheric budgeting. In this study, dual stable isotope analysis was conducted in North-West England to differentiate between emission sources, highlighting the complexity of isoscapes in regions with multiple sources. The findings demonstrated the value of dual-isotope measurements in source attribution and the presence of gas leaks and landfills as emission sources.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Energy & Fuels
Junfeng Lin, Haiyan Hu, Lihong Zhang, Xiaodong Zhang, Zhigang Liu
Summary: Accurate assessment of the thermal maturity of Longmaxi shale was carried out using various methods including solid bitumen reflectance, basin modeling, and laser Raman spectroscopy. The findings suggest that Raman spectra can effectively evaluate the maturation of marine shale without vitrinites.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Energy & Fuels
Hou Lianhua, Yu Zhichao, Luo Xia, Lin Senhu, Zhao Zhongying, Yang Zhi, Wu Songtao, Cui Jingwei, Zhang Lijun
Summary: The study analyzed shale samples from production and coring wells in the U.S. Gulf Basin to predict the estimated ultimate recovery (EUR) of shale oil and gas. Key geological factors controlling EUR were identified, including reservoir capacity, resources, flow capacity, and fracability. Six geological parameters were found to control EUR, with favorable areas of shale oil and gas being rare under certain conditions.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
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)