Article
Geosciences, Multidisciplinary
Andrea Di Giulio, Domenico Grigo, Massimiliano Zattin, Chiara Amadori, Alberto Consonni, Chiara Nicola, Andrea Ortenzi, Paolo Scotti, Silvia Tamburelli
Summary: By integrating various methods in a study of Paleozoic and Triassic reservoir sandstones from the Ghadames-Illizi Basin, potential thermal effects on the pore network modifying diagenetic events were explored. Results suggest that a Tertiary heating overprint, particularly an Early Tertiary thermal event, better explains the data collected, significantly impacting the calculated age of cements precipitation in the studied reservoir rocks.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Energy & Fuels
Jian Shi, Yanbo Lin, Aibin Zhao, Xinxing Wang, Kaisheng An, Xiangyun Zhong, Kelai Hu, Yushuang Zhu, Linyu Liu
Summary: Diagenesis is the main factor leading to the tight reservoir lithology, complex pore-throat structure, and variable occurrence and distribution characteristics of fluid in the pore-throat in the Chang 8 oil layer group in the Ordos Basin. Through the analysis of diagenetic characteristics and pore evolution, this study provides a basis for reservoir evaluation and prediction in the study area.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Energy & Fuels
Mohammad Hossein Khosravi, Mohammad Emami Niri, Mohammad Reza Saberi
Summary: This study investigates the impact of diagenetic processes on sonic velocities in carbonate rocks using well logs and core data. The results reveal the effects of different diagenetic processes on velocity and the relationship between dissolution and velocity depends on the porosity of the samples.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Article
Engineering, Marine
Zhongying Zhao, Lianhua Hou, Xia Luo, Yaao Chi, Zhenglian Pang, Senhu Lin, Lijun Zhang, Bo Liu
Summary: The reservoir properties of low-medium-maturity shale undergo complex changes during the in situ conversion process, including changes in mineral and maceral composition, pore structure, porosity, and permeability. This study quantitatively characterized these changes and identified mechanisms such as kerogen pyrolysis, clay-mineral transformation, unstable mineral dissolution, and thermal stress.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
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
Geochemistry & Geophysics
Tian Dong, Yuan Gao, He Huang, Xing Tian, Qian Yang, Yuyin Li, Lu Niu, Yongqiang Cao
Summary: The Songliao Basin in northeastern China is a significant Cretaceous sedimentary basin with abundant petroleum and geothermal resources. The SK-2 drilling program aims to recover Early Cretaceous terrestrial strata for decoding mineralogical evolution and paleoenvironmental changes. The study found that the whole-rock and clay mineralogical evolution of the Shahezi Formation in the SK-2 borehole was primarily controlled by thermal diagenesis, with minor contributions from paleoenvironmental change.
Article
Geosciences, Multidisciplinary
Qiu Nansheng, Liu Wen, Fu Xiaodong, Li Wenzheng, Xu Qiuchen, Zhu Chuanqing
Summary: This study analyzes the thermal history and denudation data of the Lower Cambrian Qiongzhusi Formation source rocks in the Sichuan Basin, leading to the identification of different maturity evolution patterns and key hydrocarbon generation stages in various tectonic units. The main factors controlling the thermal maturity and evolution models are determined to be tectonic and sedimentary burial during the Late Permian, with the thermal maturity of the formation depending on the thermal history and maximum burial depth before uplift in the Late Cretaceous. The study provides new insights into the source rock evolution and shale gas potential in the Lower Paleozoic.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Julia Favoreto, Leonardo Borghi, Bruno Valle, Marcos Nunes, Helisson Santos, Michele Arena, Maira C. O. Lima, Patrick Fuhr Dal' Bo, Jeferson Santos, Carolina Ribeiro, Pedro Coelho, Marcelo Mendes
Summary: The bioclastic and siliciclastic deposits of the Morro do Chaves Formation in northeastern Brazil are similar to the Brazilian Pre-salt rift reservoirs in terms of their deposition and diagenetic processes. The study examines the petrographic characteristics of these deposits and analyzes the distribution of cement, providing insights into the porosity and permeability enhancement in different cycles. The research also identifies the relationship between cement occurrence and sedimentological and stratigraphic controls, contributing to a better understanding of analogous lacustrine bioclastic reservoirs in the Pre-salt interval.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Energy & Fuels
Jie Li, Heng Zhang, Zhongxian Cai, Huayao Zou, Fang Hao, Guangwei Wang, Pingping Li, Ya Zhang, Junyi He, Wenli Fei
Summary: Carbonate rocks exhibit unpredictable porosity vs. permeability relationship due to the heterogeneity of pore systems, making the exploitation and prediction of prolific reservoirs difficult. This study on porous dolostone reservoirs reveals the coexistence of two types of open pore systems, which are affected by calcite cement and solid bitumen occlusion. MICP analyses show the difference between pre-bitumen and post-bitumen calcite cement affecting the pore systems.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Oladapo O. Akinlotan, Stuart J. Hatter
Summary: This study uses the Wealden Sandstones in the Wessex Basin in England as an example to investigate the depositional controls on diagenetic evolution in sedimentary basins. The results indicate that sedimentary processes play a crucial role in determining the development of authigenic minerals in sandstones, and detrital mineralogy and shallow burial depth are important factors controlling diagenesis.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Computer Science, Interdisciplinary Applications
Matteo Pedrotti, Long Xu, Ian Murray, Alessandro Tarantino
Summary: This paper presents a model to study the volumetric response of clays during drying, showing that all pores shrink in the saturated state, larger pores dry out and rebound at the onset of desaturation, while smaller pores remain saturated and shrink.
COMPUTERS AND GEOTECHNICS
(2024)
Article
Geosciences, Multidisciplinary
Jia Wang, Xianfeng Tan, Jingchun Tian, Long Luo, Xuanbo Gao, Chao Luo, Chunlin Zeng, Lei Zhang, Weiwei Xue
Summary: The study identified the diagenetic evolution of Longmaxi Formation shale using various analytical techniques, and revealed the impact of diagenetic evolution on shale gas exploration and development in the Sichuan Basin. The differences in diagenetic systems between the basin margin and center influenced the absorption capacity and fracturing effects of the shale gas.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Liangwei Xu, Keji Yang, Hao Wei, Luofu Liu, Xiao Li, Lei Chen, Tong Xu, Ximeng Wang
Summary: This study investigated the coupled evolution of hydrocarbon generation, diagenesis, and nanoscale pores in low mature marine shale samples through hydrous pyrolysis experiments. The results showed that increased temperature intensified the evolution of dissolution pores, promoted clay mineral conversion, and accelerated the development of pores in the shale.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Ruijing Zhu, Rongxi Li, Xiaoli Wu, Xiaoli Qin, Bangsheng Zhao, Futian Liu
Summary: The study in the southwestern Ordos Basin investigated the diagenetic fluid evolution and hydrocarbon accumulation characteristics of Upper Paleozoic natural gas reservoirs. It found that the reservoirs are mainly composed of quartz sandstone and featured two stages of fluid activities – early diagenetic corresponding to hydrocarbon generation and migration, and late diagenetic corresponding to hydrocarbon accumulation.
Article
Energy & Fuels
Shengyang Xie, Xiyan Yang, Xingzhi Wang, Fei Huo, Zhongliang Ma, Caiming Zhang, Mengyao Jia, Jiahao Kang, Qinfan Yi, Zisang Huang, Yang Li, Rong Yang
Summary: This study presents a detailed investigation of the shale rock types, pore types, and pore evolution characteristics of the lacustrine shale in the Da'anzhai member of Jurassic in the central Sichuan Basin. The results reveal that the dominant pore type in the shale oil reservoirs is inorganic pores, especially clay intergranular pores, while organic pores are relatively few. The increase in thermal simulation temperature leads to an increase in shale porosity, primarily due to the contribution of organic pores.
ENERGY EXPLORATION & EXPLOITATION
(2023)
Article
Geology
Ferdinando Franco Cazzini, Chiara Amadori, Alberto Bosino, Roberto Fantoni
ITALIAN JOURNAL OF GEOSCIENCES
(2020)
Article
Geochemistry & Geophysics
Andrea Di Giulio, Chiara Amadori, Pierre Mueller, Antonio Langone
Article
Geosciences, Multidisciplinary
Andrea Di Giulio, Domenico Grigo, Massimiliano Zattin, Chiara Amadori, Alberto Consonni, Chiara Nicola, Andrea Ortenzi, Paolo Scotti, Silvia Tamburelli
Summary: By integrating various methods in a study of Paleozoic and Triassic reservoir sandstones from the Ghadames-Illizi Basin, potential thermal effects on the pore network modifying diagenetic events were explored. Results suggest that a Tertiary heating overprint, particularly an Early Tertiary thermal event, better explains the data collected, significantly impacting the calculated age of cements precipitation in the studied reservoir rocks.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geology
Pierre Mueller, Marco Patacci, Andrea Di Giulio
Summary: Transitional flow deposits (TFDs) and hybrid event beds (HEBs) represent flow characteristics intermediate between fully turbulent and laminar states, affecting turbidite sandstone reservoir properties. Understanding their spatial distribution is crucial for preventing well misplacement.
ITALIAN JOURNAL OF GEOSCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Yuri Panara, Francesco Emanuele Maesano, Chiara Amadori, Jakub Fedorik, Giovanni Toscani, Roberto Basili
Summary: This study successfully reconstructed the three-dimensional geometry of eleven buried thrusts in the Northern Apennines chain and documented the recent 4 million years slip history of four of these thrusts. The findings show that thrust activation proceeds from the inner to the outer position in the chain, revealing an exponential reduction in slip rates over time with a major change around 1.5 million years ago.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Andrea Ceriani, Francesco Arboit, Andrea Di Giulio, Alessandro Decarlis, Thomas Steuber, Chiara Amadori, Aisha Al Suwaidi
Summary: This study analyzed fluid inclusions from hydrocarbon-derived seep-carbonate veins in the Monferrato Hills, NW Italy, revealing three different precipitation events and evidence of ancient dissolution of complex hydrocarbons. The research suggests that the deposition of seep-carbonates at temperatures much warmer than ambient bottom waters is driven by the disequilibrium of hydrocarbon-bearing compounds.
Article
Geochemistry & Geophysics
Gilby Jepson, Barbara Carrapa, Sarah W. M. George, Lauren J. Reeher, Paul A. Kapp, George H. Davis, Stuart N. Thomson, Chiara Amadori, Christopher Clinkscales, Sean Jones, Andrew J. W. Gleadow, Barry P. Kohn
Summary: Subduction of the Farallon slab beneath North America during Mesozoic-Cenozoic period resulted in the formation of a regional orogenic plateau in the southwestern US. The study of low-temperature thermochronology and whole-rock geochemistry revealed crustal thinning in southern Arizona during the Late Cretaceous and Cenozoic periods.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Chiara Amadori, Matteo Maino, Mattia Marini, Leonardo Casini, Barbara Carrapa, Gilby Jepson, Robert George Hayes, Chiara Nicola, Simone Reguzzi, Andrea Di Giulio
Summary: The Tertiary-Piedmont Basin in NW Italy was formed during the late Eocene on the Alps-Apennines tectonic junction, with various geodynamic processes controlling its evolution. Fluid-inclusion microthermometry, low-temperature thermochronology, and numerical modeling were used to understand the basin's thermal history.
Article
Engineering, Marine
Manuela Bordiga, Claudia Lupi, Mario Zanoni, Stefania Bianco, Marina Cabrini, Giulia Fiorentino, Silvia Garagna, Maurizio Zuccotti, Andrea Di Giulio
Summary: Investigating the trace elements in coccoliths is crucial for studying past and future climate changes. However, the isolation of monospecific samples from sediments containing diversified fossil assemblages has been challenging. In this study, we present a significant advancement in isolating fossil species-specific coccoliths using a hydraulic micromanipulation system with wet samples, allowing for improved environmental proxy calibration and understanding of coccolithophore element incorporation strategies.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Multidisciplinary Sciences
M. Bordiga, C. Lupi, G. Langer, A. Gianoncelli, G. Birarda, S. Pollastri, V. Bonanni, D. E. Bedolla, L. Vaccari, G. Gariani, F. Cerino, M. Cabrini, A. Beran, M. Zuccotti, G. Fiorentino, M. Zanoni, S. Garagna, M. Cobianchi, A. Di Giulio
Summary: Coccolithophores, marine calcifying phytoplankton, play a significant role in the global carbon cycle. Understanding their biomineral structures, especially coccoliths, is crucial for both coccolithophore eco-physiology and biomineralization research. The discovery of a silicon requirement in coccolithophores has opened up new avenues for studying biomineralization. This study reveals the uneven distribution of silicon in Helicosphaera carteri coccoliths, providing insights into the targeted role of silicon in coccolith formation and advancing our understanding of biomineralization.
SCIENTIFIC REPORTS
(2023)
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)
