Article
Geography, Physical
Alexandros Emmanouilidis, Christos Katrantsiotis, Elissavet Dotsika, Sotirios Kokkalas, Ingmar Unkel, Pavlos Avramidis
Summary: This study presents a comprehensive model for regional climatic reconstruction and local environmental changes based on a multi-proxy record from Lake Vouliagmeni, Greece. The study explores regional climatic signals from key sites and their possible links to the lake's record, highlighting the lake's susceptibility to record environmental and climatic changes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Energy & Fuels
Kai Zhang, Xiaoya Wang, Xiaopeng Ma, Jian Wang, Yongfei Yang, Liming Zhang, Jun Yao, Jian Wang
Summary: This paper focuses on using a proxy model to predict saturation and pressure maps in heterogeneous reservoirs, and presents a calibration method to improve the model accuracy by adding constraints to well blocks. The results show that the trained proxy model can accurately forecast fluid saturation and pressure fields, as well as well rates with relatively high accuracy when compared to traditional reservoir numerical simulators.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Fei Guo, Steven C. Clemens, Ting Wang, Yang Wang, Yuming Liu, Feng Wu, Xingxing Liu, Zhangdong Jin, Youbin Sun
Summary: High-resolution elemental proxies of Chinese eolian deposits show potential for evaluating co-evolution of orbital- and millennial-scale monsoon variations, with certain elemental ratios being reliable indicators for chemical weathering and grain-size sorting. The study suggests that precessional- to millennial-scale monsoon changes are persistent and consistent with other elemental records in the region.
Article
Chemistry, Multidisciplinary
Mohammad Galang Merdeka, Syahrir Ridha, Berihun Mamo Negash, Suhaib Umer Ilyas
Summary: In this study, predictive models of the steam huff and puff injection method were developed and evaluated using polynomial regression and neural network algorithms. The results showed that the neural network models outperformed the polynomial regression models, and the importance of initial reservoir water saturation and oil viscosity in predicting reservoir production performance was determined.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Cheng Feng, Jungui Feng, Ziyan Feng, Yuntao Zhong, Zhiqiang Mao, Kegang Ling
Summary: With the increasing demand for precise reservoir characterization in exploration and development of oil and gas, wettability has become more and more significant as it affects oil and water distribution. This study proposed a new method for wettability determination based on resistivity index prediction, which was validated through petrophysical experiments on 30 cores, demonstrating a high level of effectiveness and reliability with a correlation coefficient of 0.96 between the established models and experimental results.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Gregor Pfalz, Bernhard Diekmann, Johann-Christoph Freytag, Boris K. Biskaborn
Summary: This paper presents a data science approach for transforming research data from different lake sediment cores into a coherent framework. By ensuring syntactic and semantic comparability through transforming data into a uniform format, and validating the approach through database schema development and comparative analysis, the study demonstrates the feasibility of the method.
COMPUTERS & GEOSCIENCES
(2021)
Article
Engineering, Petroleum
Ivan Putilov, Nikita Kozyrev, Vasily Demyanov, Sergey Krivoshchekov, Alexandr Kochnev
Summary: This paper presents approaches for qualitative and quantitative estimation of the scale effect for the plug and full-diameter core samples, and validates them through the analysis of carbonate cores from Elets reservoirs.
Article
Mathematics, Applied
Felix Koester, Dhruvit Patel, Alexander Wikner, Lina Jaurigue, Kathy Luedge
Summary: We propose a new approach to dynamical system forecasting called data-informed-reservoir computing (DI-RC) that, while solely being based on data, yields increased accuracy, reduced computational cost, and mitigates tedious hyper-parameter optimization of the reservoir computer (RC).
Article
Computer Science, Interdisciplinary Applications
Tobi Ore, Dengliang Gao
Summary: In this study, data-driven, machine learning workflows were used to predict reservoir brittleness from conventional logs. Three strategies were proposed using gradient boosting, support vector regression, and neural networks. The performance of the models was evaluated and compared, and it was found that the gradient boosting algorithm outperformed the others. The workflow demonstrated the potential for predicting other reservoir properties and characterizing reservoir heterogeneity from seismic traces trained by well logs.
COMPUTERS & GEOSCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Hanfei Yang, Yan Zhao, Qiaoyu Cui, Weihe Ren, Quan Li
Summary: The XRF core-scanned Rb/Sr ratios and CIA are reliable proxies for chemical weathering intensity and Asian summer monsoon intensity in fine-grained sedimentary sequences. However, limitations such as grain-size effects and low test accuracy may affect the reliability of the Rb/Sr ratios as a paleoclimatic proxy in certain cases. Mutual verification of multiple indicators is necessary before accurately applying Rb/Sr in other similar study areas.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Carsten Laukamp, Emma Beattie, Monica Legras
Summary: Whole rock geochemical analysis is important for rock classification and understanding geological province. This study demonstrates the use of partial least squares regression to model geochemical indices from hyperspectral data, reducing the cost of full geochemical analysis. The combination of geochemical and hyperspectrally-derived mineralogy aids in mapping weathering intensity and related physicochemical gradients.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Environmental Sciences
Mohammed Falah Allawi, Ibraheem Abdallah Aidan, Ahmed El-Shafie
Summary: The study introduced a modern model called CANFIS, which was modified to enhance the accuracy of reservoir evaporation prediction. Utilizing genetic algorithm to select effective input combination, the proposed model outperformed other artificial intelligence models in terms of efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Rasool Amiri Kolajoobi, Hosein Haddadpour, Mohammad Emami Niri
Summary: This study proposes a new solution for uncertainty quantification using artificial neural networks (ANN) to calculate geological uncertainties more quickly. Compared to traditional methods, this approach accurately quantifies uncertainties in a shorter period of time.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Computer Science, Information Systems
Abdulrahman Al-Fakih, Sanlinn I. Kaka, Ardiansyah I. Koeshidayatullah
Summary: This study addresses the challenges of accurately predicting reservoir properties in the North Sea sedimentary basin by applying advanced machine learning techniques. The study introduces a data-driven preprocessing workflow and achieves accurate predictions with limited data availability. The artificial neural network (ANN) and random forest (RF) models perform the best among the evaluated algorithms.
Article
Environmental Sciences
Erica Matta, Mariano Bresciani, Giulio Tellina, Karin Schenk, Philipp Bauer, Fabian Von Trentini, Nils Ruther, Alena Bartosova
Summary: This study investigates the impact of vegetation indices, bio-physical parameters, meteorological variables, and hydrological data on the spatial and temporal variability of water quality in the Banja reservoir in Albania. The analysis is conducted using Sentinel-2 and Landsat 8/9 images to derive water quality parameters and vegetation properties. The results show significant positive correlations between water turbidity and hydrological parameters, and negative correlations between water turbidity and vegetation descriptors. The integration of earth observation data enhances the analysis of specific time periods or precipitation events.
Article
Geosciences, Multidisciplinary
Pantelis Karamitopoulos, Gert J. Weltje, Rory A. F. Dalman
Summary: The study utilized multiscale simulation to quantify the geometry and spatial distribution of fluvio-deltaic stratigraphy, conducting numerical experiments and post-processing routines to analyze the evolution of fluvial-deltaic systems and the impact of different A/S cycles on stratigraphic records.
Article
Geosciences, Multidisciplinary
M. G. G. De Jong, M. E. Donselaar, H. T. W. Boerboom, K. A. Van Toorenenburg, G. J. Weltje, L. Van Borren
MARINE AND PETROLEUM GEOLOGY
(2020)
Article
Geosciences, Multidisciplinary
Gert Jan Weltje, Bram Paredis
EARTH-SCIENCE REVIEWS
(2020)
Article
Geosciences, Multidisciplinary
S. Henares, M. E. Donselaar, L. Caracciolo
EARTH-SCIENCE REVIEWS
(2020)
Article
Environmental Sciences
Devanita Ghosh, Santosh Kumar, Marinus Eric Donselaar, Cynthia Corroto, Ashok K. Ghosh
Summary: This study investigates the control of arsenic fluxes by meandering-river geomorphology in the Suhiya oxbow-lake area of the Middle Ganga River, using a multidisciplinary approach to explore vegetation dynamics, sedimentation rate, organic carbon infiltration, elemental analysis, and microbial diversity. The results reveal the crucial roles of organic carbon transport and microbial diagenesis in the mobilization of arsenic and other geogenic elements.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Jasper Verhaegen, Hilmar von Eynatten, Istvan Dunkl, Gert Jan Weltje
Summary: Through combining zircon U-Pb geochronology with heavy mineral data in the southern North Sea Basin, this study reveals a complex sediment mixing model between northern and southern sources. The constant zircon U-Pb age spectra suggest that most zircons initially had a similar northern source, but underwent intense chemical weathering in the south. This highlights the importance of using multiple provenance proxies to account for weathering, reworking and recycling processes accurately.
GEOLOGICAL MAGAZINE
(2021)
Article
Geosciences, Multidisciplinary
S. Kumar, D. Ghosh, M. E. Donselaar, F. Burgers, A. K. Ghosh
Summary: Shallow aquifers in Holocene alluvial basins worldwide have been identified as hotspots for arsenic pollution, with the accumulation of arsenic originating from abandoned and sediment-filled meandering-river bends. The release of arsenic from clay-plug sediment by microbial metabolism and subsequent migration to adjacent sandy point-bar aquifers is a significant process in arsenic enrichment in aquifers.
Article
Geology
Domenico C. G. Ravida, Luca Caracciolo, Saturnina Henares, Meike Janssen, Harald Stollhofen
Summary: The study investigates the environmental response to external forcings on continental successions at the southeast margin of the Central European Basin System in Germany, integrating high-resolution core-logging and quantitative sedimentary petrography. Environmental changes are accentuated by variations in sediment composition, suggesting distinct drainage evolutions regulated by upstream climate and tectonic controls.
Article
Geography, Physical
Marinus E. Donselaar, Margarita C. Cuevas Gozalo, Koen A. van Toorenenburg, Jakob Wallinga
Summary: This study presents a quantitative spatio-temporal reconstruction of avulsion history in the Rio Colorado dryland river system in Bolivia, based on satellite imagery and absolute age dating. The results show that successive avulsions created a sheet of interconnected fluvial deposits in the alluvial plain, with inter-avulsion periods ranging from several hundred to over a thousand years.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geosciences, Multidisciplinary
Nasar Khan, Gert Jan Weltje, Irfan U. Jan, Rudy Swennen
Summary: This study examines the potential of shale gas reservoirs in the Late Palaeocene Patala Formation in the Potwar Basin of Pakistan. The results indicate that mudstone lithofacies rich in organic matter and quartz have the highest potential for reservoir quality. The study also highlights the influence of depositional environment and diagenesis on reservoir quality.
GEOLOGICAL JOURNAL
(2022)
Article
Geology
D. Hatzenbuehler, L. Caracciolo, G. J. Weltje, A. Piraquive, M. Regelous
Summary: This study investigates the factors influencing the generation and transfer of sediments from volcanic rocks in a mixed lithology setting. The integration of geomorphological analysis, sand petrography, and bulk-rock and clay geochemistry allows for the understanding of the dynamics regulating sediment generation. The results show that drainage features control the abundance of volcanic lithic fragments and the rates and extent of chemical weathering.
SEDIMENTARY GEOLOGY
(2022)
Article
Geology
P. Karamitopoulos, M. E. Donselaar, G. J. Weltje, K. A. van Toorenenburg
Summary: An advection-diffusion model was used to analyze avulsions in terminal river systems and understand their impact on basin-fill architecture. The model was tested using data from the modern Rio Colorado dryland terminal river system in Bolivia, and the results were compared with geospatial and geochronological data. The study provides insights into the role of avulsions in the geomorphological evolution of terminal river systems.
SEDIMENTARY GEOLOGY
(2022)
Article
Environmental Sciences
Devanita Ghosh, Marinus Eric Donselaar
Summary: Identifying arsenic-contamination hotspots in alluvial aquifers is a global-scale challenge. Recent research shows that the biogeochemistry of oxbow lakes, mobilization of geogenic arsenic, and accumulation in well-defined areas are interacting processes that determine arsenic-contamination locations. This awareness provides a tool for identifying potential arsenic hotspots based on geomorphological similarity and aiding targeted mitigation approaches.
SCIENCE OF THE TOTAL ENVIRONMENT
(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)