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
Geosciences, Multidisciplinary
Benjamin Busch, Atsushi Okamoto, Krassimir Garbev, Christoph Hilgers
Summary: Faults and fractures are crucial fluid pathways in subsurface energy reservoirs, impacting reservoir quality and production potential. Mineral precipitations can decrease available fractures, affecting porosity and permeability. Research on hydrothermal experiments in sandstone reveals that grain size variations and lamination can influence the growth of quartz cement in fractures. The mineralogy of the precipitate is influenced by detrital compositions, with quartz abundance impacting the type of precipitate formed.
JOURNAL OF STRUCTURAL GEOLOGY
(2021)
Article
Multidisciplinary Sciences
C. Saetre, H. Hellevang, C. Dennehy, H. Dypvik
Summary: This study investigates the geochemical system of the Rosebank field in the Faroe-Shetland Basin, focusing on the dissolution and precipitation effects at the basalt-sandstone interface. The results show that the dissolution and precipitation processes control the basalt dissolution rate, while diffusion has minimal impact on reservoir quality.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Shutong Li, Xianyang Liu, Xiuqin Deng, Xiao Hui, Ruiliang Guo, Junlin Chen, Jiaqiang Zhang
Summary: The main factors leading to reservoir tightness in Chang 6 sandstones in the western Jiyuan area are high content of feldspar and rock fragments, fine grain size, and compaction during diagenesis. The study also found that dissolution plays a significant role in improving reservoir physical properties.
Article
Geosciences, Multidisciplinary
Ping Gao, Xianming Xiao, Dongfeng Hu, Gary G. Lash, Ruobing Liu, Yidong Cai, Zihan Wang, Baoyue Zhang, Tao Yuan, Siyi Liu
Summary: Silica diagenesis plays a critical role in the reservoir properties of shale, but its influence on the porosity evolution of deeply-buried shale remains uncertain. This study investigates the silica diagenesis in deep gas shale samples from the Sichuan Basin and finds that siliceous skeletal fragments are the main source of silica involved in diagenetic alteration. Authigenic quartz has a dual effect on porosity preservation and evolution. Optimal development and preservation of porosity, especially organic porosity, is observed when the content of authigenic quartz is moderate (10-30% Sixs). The study underscores the great potential of WF-LMX deep shale for shale gas exploration.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Silvia Tamburelli, Andrea Di Giulio, Chiara Amadori, Alberto Consonni, Andrea Ortenzi
Summary: This study investigates the potential thermal effects of Cenozoic magmatic activity on the petroleum system in a sector of the Illizi-Ghadames basin. The results show that overheating occurred during the late Cenozoic magmatic cycle, leading to a significant decrease in reservoir rocks pore space.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
F. Rashid, D. Hussein, P. W. J. Glover, P. Lorinczi, J. A. Lawrence
Summary: This paper examines the effects of different diagenetic processes on the petrophysical properties of carbonate rocks and develops quantitative methodologies to describe these effects. Petrophysical measurements on a set of 172 core plugs were made to provide a test data set. It was found that porosity and pore connectedness have dominant control on electrical and hydraulic rock parameters. The paper also proposes a new theoretical framework linking diagenetic processes to petrophysical measurements.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Li Zhou, Hao Tang, Yading Li, Ruiqing Tao, Wei Yan, Tao Ma, Shuang Pan, Yi Du, Zhenbo Tan, Xuefei Yang
Summary: Although the development of Ordovician petroleum exploration in the Sichuan Basin has been slow, deeper research on reservoir characteristics and genesis can accelerate it. This study characterizes and analyzes the Ordovician reservoirs in the central part of Sichuan Basin based on various data sources. The results reveal that the reservoirs are mainly concentrated in the Lower Ordovician Tongzi Formation and have different porosity types. The development of these reservoirs is controlled by deposition, diagenesis, and tectonics, with shoal facies, dissolution, and dolomitization playing important roles. This study provides valuable references for further exploration and development of Ordovician petroleum in the Sichuan Basin.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Zihao Liu, Shenghe Wu, Jinbu Li, Zhenhua Xu, Miao Tian, Tianyou Zhang, Yang An
Summary: The eighth member of lower Shihezi Formation in the Sulige gas field exhibits four types of sandstones with different petrographic characteristics, among which coarse-grained sandstones with chlorite coating (type II) are identified as the best reservoirs. The diagenetic process is complex, mainly including intense compaction, dissolution, and cementation, affecting the reservoir quality significantly. The presence of ductile grains content around 4% is crucial for high-quality reservoirs in quartzarenite sandstones.
GEOLOGICAL JOURNAL
(2021)
Article
Energy & Fuels
Yousef Ibrahem, V. P. Morozov, V Sudakov
Summary: This study focused on the sedimentary rocks of the Lower Cretaceous in the Euphrates Graben area, using various techniques like core description, thin section observations, and electron microscopy. The research identified different types of dolomites in the Judea Formation, indicating a two-stage diagenetic history for the sediments, which led to improved reservoir properties by enhancing porosity.
Article
Engineering, Chemical
Jinlai Huan, Yuanlin Meng, Qilin Wu, Lihua Xiao, Zixuan Wang
Summary: This study focuses on the diagenetic evolution of the reservoir in the E(3)w(3) member of the Oligocene Weizhou Formation in Beibuwan Basin, northern South China Sea. The occurrence states and effects of different clay minerals, including chlorite, illite, kaolinite, and quartz cement, are analyzed. The study identifies three different occurrences of chlorite and three major types of diagenetic kaolinite. The presence of chlorite coating has a significant effect on quartz overgrowth.
Article
Geosciences, Multidisciplinary
Yong-Bin Niu, Meng-Yuan Cheng, Li-Jun Zhang, Jian-Hua Zhong, Sheng-Xin Liu, Duan Wei, Zi-Lu Xu, Pei-Jun Wang
Summary: Bioturbation plays a significant role in enhancing the reservoir capacity of tight reservoirs. This study examined the petrophysical characteristics of bioturbation and host sediments in carbonate rocks and analyzed their effects on the properties of the rocks. The results show that multiple burrows created by bioturbation formed large-scale bioturbated carbonate rocks with lateral continuity and vertical connectivity, which were further improved by diagenesis.
JOURNAL OF PALAEOGEOGRAPHY-ENGLISH
(2022)
Article
Geosciences, Multidisciplinary
Benjamin Busch, Dirk Adelmann, Rolf Herrmann, Christoph Hilgers
Summary: The main reservoir quality controls in Triassic Buntsandstein deposits in the Upper Rhine Graben and surrounding outcrops in Germany and France are discussed. The study emphasizes the importance of detrital grain size, authigenic cements, and illite textures as key factors affecting reservoir quality in this lithology.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Olmo Miguez-Salas, Jose Cabrera Ortiz, Javier Dorador, Francisco J. Rodriguez-Tovar
Summary: Bioturbation can have a significant impact on petrophysical properties of sedimentary rocks, but the specific influence of Ophiomorpha on these properties has not been fully understood. This study examines how the features of Ophiomorpha affect porosity distribution, providing insights into their diverse impacts on reservoir properties.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Energy & Fuels
Zheng Cao, Karem Azmy, Chengyan Lin, Chunmei Dong, Lihua Ren, Mingyang Qin, Zhijun Li, Xianfeng Tan, Lei Zhang, Xiaogang Li
Summary: This study evaluates the reservoir quality of the oil-bearing layer in the southern Songliao Basin, northeast China using different research methods. The results show that the sedimentary facies and diagenesis have significant effects on the reservoir quality of the unconventional reservoir. It is also found that the distributary channel sandstones in the LST have relatively higher reservoir quality.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geology
Richard Newport, Manuel Segura, Jonathan Redfern, Cathy Hollis
Article
Geosciences, Multidisciplinary
Max Casson, Gerome Calves, Mads Huuse, Ben Sayers, Jonathan Redfern
Summary: The application of high-resolution seismic geomorphology and lithological data offshore The Gambia documents a complex tectono-stratigraphic history through the Cretaceous, revealing the spatial-temporal evolution of submarine canyons and estimating the intra- versus extra-basinal sediment budget. The evolution of the continental margin from the Jurassic to Aptian is characterized by carbonate escarpment development followed by the first major siliciclastic sediment delivery during the Albian age, linked to hinterland exhumation events. Submarine canyonisation initiated at the palaeo-shelf edge, controlled by lithological contrast, and lasted for approximately 28 million years, dissecting the inherited seascape topography.
Article
Geosciences, Multidisciplinary
Max Casson, Luc G. Bulot, Jason Jeremiah, Jonathan Redfern
Editorial Material
Geochemistry & Geophysics
Ian Atkinson, Vsevolod Egorov, David Brown, John Cody, William Dickson, Michael Enachescu, Roy Fitzsimmons, John Hogg, Jonathan Redfern
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2020)
Article
Geosciences, Multidisciplinary
Remi Charton, Giovanni Bertotti, Aude Duval Arnould, Jonathan Redfern, Joep E. A. Storms
Summary: This study integrates over 30 published Low Temperature Thermochronology and time-Temperature modelling studies from Morocco and its surroundings to investigate the exhumation, erosion rates, and palaeoreconstructions of source-to-sink domains in the Atlantic realm. The results predict high exhumation rates in the Jurassic and Neogene, comparable to rift flank settings, and provide insight into the evolution of the Central Atlantic margin hinterlands.
Article
Geosciences, Multidisciplinary
Aude Duval-Arnould, Stefan Schroder, Remi Charton, Remi Joussiaume, Philippe Razin, Jonathan Redfern
Summary: Passive margins, traditionally seen as tectonically quiescent, exhibit significant post-rift tectonic uplift that influences sediment delivery. The study integrates field observations, well data, and petrographic analysis to establish a coherent sedimentological model, providing insights into regional versus local tectonostratigraphic evolution. The role of hinterland tectonic movements during a passive margin phase is highlighted, triggering forced regressions in response to eustasy effects.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Laurent Petitpierre, Sebastian Frohlich, Stephane Bodin, Paul Grech, Simon Lang, Dina Vachtman, Jonathan Redfern
Summary: The study focused on Lower Carboniferous strata on the edge of the Al Hammadah al Hamra plateau, with new data revealing a sedimentary log of 1500 m and a re-evaluation of the Marar's maximum thickness to be 800 m. Detailed facies analysis supports a predominantly marine depositional environment in the region.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Jianpeng Wang, Luc G. Bulot, Kevin G. Taylor, Jonathan Redfern
Summary: This study focuses on the organic matter enrichment and deposition of black mudstones in the Late Cretaceous Errachidia-Goulmima Basin in Morocco, indicating a correlation with the late Cenomanian to early Turonian period. The development of organic-rich mudstones reflects increased productivity and enhanced organic matter preservation due to changes in redox conditions.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Max Casson, Jason Jeremiah, Gerome Calves, Frederic de Ville de Goyet, Kyle Reuber, Mike Bidgood, Daniela Rehakova, Luc Bulot, Jonathan Redfern
Summary: This study investigates the heterogeneities in the post-rift sedimentary systems of the Guyanas continental margin, providing new data and refining the timing of key stratigraphic surfaces and megasequences. The findings revise the dating of the basal succession along the margin, revealing important insights into the structural evolution and segmentation of the margin.
PETROLEUM GEOSCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Ian Mounteney, Max Casson, Jeremy Rushton, Ian Millar, Ndiaye Dethie, Jonathan Redfern
Summary: This study provides an integrated mineralogical assessment for sediments derived from modern-day rivers and Cenozoic deposits in Senegal and Gambia. The study identifies two distinct provenance populations and demonstrates prevalent recycling of Senegal Basin sediments by multiple rivers throughout the Quaternary.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Remi Charton, Christian Kluge, David Fernandez-Blanco, Aude Duval-Arnould, Orrin Bryers, Jonathan Redfern, Giovanni Bertotti
Summary: This study analyzes the impact of evaporite mobilisation and tectonic evolution on sediment pathways in the Essaouira-Agadir Basin in Morocco. The results show the importance of syn-sedimentary evaporite tectonics on basin morphology and sediment distribution, particularly influencing the delivery of clastics by fluvial systems and deepwater processes. This knowledge is crucial for predicting reservoir presence on the eastern margin of the Central Atlantic Ocean and its conjugate margin in Nova Scotia.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geography, Physical
Orrin Bryers, Luc Georges Bulot, Aude Duval-Arnould, Cathy Hollis, Jonathan Redfern
Summary: This study describes extensive coral-rich bodies deposited on the Moroccan northwest Atlantic shallow-marine margin during the Cretaceous. The results provide information on driving processes for coral development, temporal evolution, and environmental factors affecting coral growth. The termination of coral deposition is marked by a hardground surface, indicating slow rates of sedimentation and a transgression, leading to deterioration of the carbonate platform health.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Multidisciplinary Sciences
Ardiansyah Koeshidayatullah, Nawwar Al-Sinawi, Peter K. Swart, Adrian Boyce, Jonathan Redfern, Cathy Hollis
Summary: This paper provides a detailed documentation of reaction front evolution in a tectonically active salt basin and reveals a high level of complexity, associated with multiple fluid flow and tectonic events. The results demonstrate that an apparently simple reaction front can have a complex history, governed by the inheritance of prior diagenetic events.
SCIENTIFIC REPORTS
(2022)
Article
Geosciences, Multidisciplinary
James Lovell-Kennedy, Emmanuel Roquette, Stefan Schroder, Jonathan Redfern
Summary: By reprocessing and analyzing a large number of detrital zircon ages, this study reveals the evolution of the detrital zircon record in the Phanerozoic era in northwest Africa. The presence of Mesoproterozoic zircons in Moroccan sediments raises questions about the position of the West African Craton in the Proterozoic and the extent of Mesoproterozoic orogeny in North Africa.
Article
Geosciences, Multidisciplinary
James Lovell-Kennedy, Emmanuel Roquette, Stefan Schroder, Remi Charton, Jonathan Redfern
Summary: The Kerrouchen Basin is an understudied rift basin in the Middle Atlas of Morocco, where two distinct fluvial systems, K3 and K4, have been recorded. The K3 system shows a predominant drainage direction towards the north-north-east, while the K4 system records drainage to the southwest. Heavy mineral and petrographic analysis indicates different sedimentary provenances for these fluvial systems. This study has important implications for paleo-geographic reconstructions and future exploration efforts in Morocco.
JOURNAL OF AFRICAN EARTH SCIENCES
(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)