Article
Geography, Physical
Page C. Quinton, Michael C. Rygel, Megan Heins
Summary: Sea-level change influences carbon isotopic trends in both modern and ancient carbonate depositional environments. Generally, this relationship is manifested as a positive carbon isotopic excursion where the rising limb of the excursion is associated with transgression. These excursions exist because sea level can influence local/regional/global carbon cycling, basin restriction and meteoric influence, and carbonate sedimentation. Our goal is to explore the relationship between carbon isotopes and sea level prior to the evolution of vascular plants at a time when the terrestrial carbon reservoir was far smaller. Our results suggest that the early colonization of land by non-vascular plants impacted regional carbon cycling in the Appalachian Basin and eventually the global carbon cycle in the Late Ordovician.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geochemistry & Geophysics
Caifeng Zou, Luanxiao Zhao, Minghui Xu, Yuanyuan Chen, Jianhua Geng
Summary: The study presents a Random Forest-based method for predicting underground porosity distribution using multiple seismic attributes, with improved accuracy through quantifying uncertainty. Experimental results indicate that low uncertainty corresponds to relatively accurate predictions, while high uncertainty may result in larger errors. This method shows potential for risk assessment in hydrocarbon exploration and development.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geology
Regina F. Dunseith, Jay M. Gregg, G. Michael Grammer
Summary: Dolomitized fault-fracture structures in the Trenton and Black River formations are globally representative of hydrothermal petroleum reservoirs, with fluid histories only partially understood. The structures in the southern Michigan Basin are mainly composed of fault-associated dolomite bodies that are highly fractured and brecciated. The fluid inclusion homogenization temperatures and isotopic values of carbonate cements suggest multiple fluid sources and complex water-rock interactions in the oil fields.
JOURNAL OF SEDIMENTARY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
David Mora Calderon, John P. Castagna, Ramses Meza, Shumin Chen, Renqi Jiang
Summary: This study confirms the effectiveness of applying seismic multi-attribute analysis to bandwidth extended data in resolving thin sand bodies in the Daqing oilfield, and highlights key attributes for improving prediction methods from seismic data.
APPLIED SCIENCES-BASEL
(2021)
Article
Geosciences, Multidisciplinary
Yu Zhang, Zhengyi Song, Yongkang Yao, Jianfeng Cai, Shuangxi Zhang, Conglin Zhang
Summary: Estimating the spatial porosity and permeability variation of slope site is difficult due to complexity of petrophysical modeling. The linkage between seismic wave velocity and porosity and permeability is established and validated using differential effective medium and self-consistent approximation. The results show that the porosity and permeability profiles based on self-consistent approximation are more reliable. This study provides a sound basis for further hydrological interpretation of seismic data and offers geotechnical suggestions for natural hazard mitigation.
JOURNAL OF APPLIED GEOPHYSICS
(2023)
Article
Engineering, Petroleum
Qilin Wu, Quanwen Liu, Songxia Liu, Shenjian Wang, Junfeng Yu, Walter B. Ayers, Qi Zhu
Summary: The Lufeng oil field in the South China Sea has faced challenges in the exploration due to the unclear distribution of reservoirs and caprocks. This study proposes a new seismic attribute VRDEN and a workflow combining prestack inversion and multiattribute regression analysis to improve the prediction of lithology and reservoir distribution. The results show a more accurate understanding of reservoir properties and a more efficient exploitation of the Lufeng oil field.
Article
Environmental Sciences
Sai Wang, Tuan-Tuan Wang, Hsing-Juh Lin, Simon D. Stewart, Gong Cheng, Wei Li, Feng-Juan Yang, Wen-Da Huang, Zhong-Bing Chen, Song-Guang Xie
Summary: Research on tropical and subtropical rivers has shown that the differences in environmental conditions and human disturbances lead to distinct characteristics in river ecosystems along a longitudinal gradient. Factors such as water quality, habitat characteristics, and biological indicators have significant impacts on the health and maturity of river ecosystems, providing a cost-effective approach to improve system-level functioning through monitoring these representative environmental factors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Sirous Hosseinzadeh, Ali Kadkhodaie, David A. Wood, Reza Rezaee, Rahim Kadkhodaie
Summary: Understanding the fracture patterns in hydrocarbon reservoirs influenced by plate collision is crucial in the Zagros area of Iran. In this study, an integrated workflow was used to assess the impact of various fracture sets on heterogeneous carbonate reservoir rocks. The results indicate that secondary permeability significantly affects well productivity.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Geochemistry & Geophysics
A. Jelvegar Filband, M. A. Riahi
Summary: In this study, seismic inversion was used in combination with seismic attributes to evaluate reservoir porosity in an oil field in SW Iran. The neural network method was applied to estimate porosity, achieving a correlation coefficient of 81%.
BOLLETTINO DI GEOFISICA TEORICA ED APPLICATA
(2021)
Article
Geochemistry & Geophysics
Vladislav G. Martynov, Luciana Astiz, Debi Kilb, Frank L. Vernon
Summary: The study focuses on the cyclic amplitude variation of seismic noise in southern California, showing patterns between 0.3 and 7.2 Hz. The modulation of seismic noise by semi-diurnal tidal mode M-2 is observed in low-frequency signals. Inland stations exhibit a phase lag relative to shoreline stations, possibly due to cyclic changes in M-2 and crustal seismic attenuation.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Libing Zhang, Yaping Huang, Bin Wu, Shouhua Dong
Summary: This study introduces a method to identify minor faults in the top Ordovician limestone stratum using numerical simulation and seismic attribute fitting. By fitting ellipse equations, fault characteristics can be determined, allowing for inference of fault throw and dip.
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2022)
Article
Geochemistry & Geophysics
Lei Wang, Weihua Guo, Bintao Chen, Li Yang, Jie Bai
Summary: Reservoir characterization and fluid discrimination based on seismic reflection amplitude play important roles in seismic exploration industry. In this study, a new attribute called DI was proposed to discriminate hydrocarbon-associated anomalies and predict reservoir parameters quantitatively. Numerical modelling and feasibility study confirmed the high resolution and stability of the DI attribute.
EXPLORATION GEOPHYSICS
(2022)
Article
Ecology
Paul McKinney, Tom Hollenhorst, Joel Hoffman
Summary: This study evaluates the water quality gradients between nearshore and offshore areas in the southern part of Lake Ontario using observations from a Slocum autonomous glider. The results show that the chlorophyll gradient is located below the surface and within the coastal boundary layer, which is important for differentiating biological communities.
AQUATIC ECOSYSTEM HEALTH & MANAGEMENT
(2022)
Article
Computer Science, Interdisciplinary Applications
Yanguo Qiao, Zhigang Liu, Wei Luo, Dianguang Zang, Chenrui Li, Fan Yang, Guoshuai Si
Summary: The Wubaochang structure is located in the eastern Sichuan structural belt, with poor seismic imaging results. The low-efficiency gas reservoir in this structure has been improved with the use of horizontal wells. The study of sedimentary microfacies, topography, and seismic entropy provides reliable seismic and geological basis for optimizing microfacies targets and horizontal well placement.
EARTH SCIENCE INFORMATICS
(2022)
Article
Paleontology
Joseph Moysiuk, Alejandro Izquierdo-Lopez, George E. Kampouris, Jean-Bernard Caron
Summary: This study reports the discovery of soft-bodied fossils and shelly biota from the Late Ordovician period in Canada, providing valuable information about the open marine environment during that time. The findings also contribute to the understanding of the classification and evolution of marrellomorph arthropods.
JOURNAL OF PALEONTOLOGY
(2022)