Article
Geochemistry & Geophysics
Jingyao Lou, Zhongxiang Zhao, Yanlin Shao, Yang Li, Xiaohong Xu, Youbin He
Summary: This study focuses on the characterization of complexly stacked sand body reservoirs in a cratonic basin. Using the He 8 section of the Sulige 120 area in the Ordos Basin as an example, the study analyzes the development scale and genetic type of sand bodies, identifies stacking patterns and distribution patterns, and establishes three-dimensional models of sand bodies and reservoir properties. The results show the importance of accurately predicting the distribution patterns of reservoirs with complex sand body stacking patterns.
Article
Computer Science, Interdisciplinary Applications
Weiwei Zhu, Xupeng He, Ryan Kurniawan Santoso, Gang Lei, Tadeusz W. Patzek, Moran Wang
Summary: This study digitized 80 published outcrop maps using a pixel-based fracture detection algorithm and analyzed key fracture properties. The findings provide theoretical justifications for fracture network modeling and reveal multiple power-law distributions for fracture lengths, variations in fracture orientations across scales, and spatial clustering of fracture intensities. The study also emphasizes the presence of T-type nodes in natural fracture networks, which require rule-based algorithms for simulation.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Geosciences, Multidisciplinary
Jilin Zhou, Xiujuan Wang, Timothy S. Collett, Sanzhong Li, Zenggui Kuang, Yintao Lu, Wei Deng, Weichao Yan, Jin Qian, Jiapeng Jin
Summary: LWD and coring data showed the presence of gas hydrate-bearing sand-rich reservoirs in contact with underlying water-saturated sediment at NGHP-02-16, -17, -20, -23 and -24 sites in Area B of the Krishna-Godavari Basin. Lithofacies analysis revealed an interbedded unit of thin fine-sand layers and clay-rich layers in the lower gas hydrate-bearing reservoir section. The study highlights the importance of reservoir heterogeneity and fluid migration in the distribution of gas hydrate and free gas.
MARINE AND PETROLEUM GEOLOGY
(2023)
Review
Energy & Fuels
Fucheng Deng, Bin Huang, Xiaosen Li, Jianwu Liu, Gang Li, Yating Xu, Biao Yin
Summary: This review evaluates recent research advances in sand control for hydrate production, summarizes the mechanical characteristics and dynamic response of hydrate sediment, and proposes a comprehensive consideration of various factors in sand control design and sand production mechanism.
Review
Energy & Fuels
Fucheng Deng, Bin Huang, Xiaosen Li, Jianwu Liu, Gang Li, Yating Xu, Biao Yin
Summary: This review evaluates the research advances in sand control for hydrate production and summarizes the mechanical characteristics and dynamic response of hydrate sediment. It suggests combining the fluid-solid thermal coupling theory to study the sand control design and sand production mechanism, and considering the comprehensive influence of multiple parameters.
Article
Geosciences, Multidisciplinary
Qiqi Wang, Wayne Narr, Stephen E. Laubach
Summary: Using various geological observations and statistical methods, this study investigates the spatial arrangement and intensity of fractures in the East Painter Reservoir anticline in Wyoming. The results show that the degree of clustering and intensity of fractures vary with structural position, with the backlimb exhibiting more clustered fractures but lower intensity compared to the forelimb. Petrographic analysis reveals that quartz plays a role in sealing narrow fractures, while wider fractures can be sealed by quartz, calcite, or quartzose cataclasite. The findings suggest that shear on preexisting fractures in the forelimb may lead to numerous but less spatially correlated open fractures.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Alma Dzozlic Bradaric, Trond Andersen, Isabelle Lecomte, Helge Loseth, Christian Haug Eide
Summary: This study shows that despite being below seismic resolution, small-scale sand injectites can be detected in seismic data. The detection is more likely if the injectites have high thickness, steep dip, and dense spacing. The presence of sand injectites also decreases the top reservoir amplitude. Comparisons between synthetic seismic images and real data indicate that low-amplitude anomalies observed above the reservoir may be caused by overlying sand injectites. Additionally, the study suggests that the Grane Field hosts thicker and more distant sand injectites than what well observations indicate.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2022)
Article
Meteorology & Atmospheric Sciences
Andreas F. Prein, Nikolina Ban, Tinghai Ou, Jianping Tang, Koichi Sakaguchi, Emily Collier, Sanjay Jayanarayanan, Lu Li, Stefan Sobolowski, Xingchao Chen, Xu Zhou, Hui-Wen Lai, Shiori Sugimoto, Liwei Zou, Shabeh ul Hasson, Marie Ekstrom, Praveen Kumar Pothapakula, Bodo Ahrens, Romilly Stuart, Hans Christian Steen-Larsen, Ruby Leung, Danijel Belusic, Julia Kukulies, Julia Curio, Deliang Chen
Summary: The Tibetan Plateau, also known as the Third Pole, is an important freshwater source for Asia. However, due to challenges in weather and climate modeling, the future of this region remains highly uncertain. The Convection-Permitting Third Pole (CPTP) project aims to revolutionize our understanding of climate change impacts on the Tibetan Plateau through ensemble-based, kilometer-scale climate modeling.
Article
Meteorology & Atmospheric Sciences
Xiaochen Zhang, Bowen Zhou, Fan Ping
Summary: At kilometer-scale resolutions, SGS horizontal turbulent mixing has significant influence on simulated convective storms, particularly affecting precipitation sensitivity at larger grid spacings. However, the importance of SGS horizontal mixing diminishes at finer resolutions, highlighting the need for optimal mixing parameters for accurate simulations.
ATMOSPHERIC RESEARCH
(2021)
Article
Energy & Fuels
Zhang Xiaoxia, Yu Jiajie, Li Nianyin, Wang Chao
Summary: This study focuses on multi-scale fracture prediction and quantitative characterization of fractured carbonate reservoirs using three-dimensional seismic imaging logging and regional tectonic stress field distribution data. Combining various attributes such as variance cube, curvature, and through-flowline system, large-scale cracks are recognized while a small- and medium-sized fracture model is established based on the maximum positive curvature attribute, fracture density, and fracture direction interpreted by imaging logging. Ultimately, the study aims to accurately describe and characterize the multi-scale fracture distribution law to guide the fine development of oilfields.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Environmental Sciences
Noyingbeni Kikon, Deepak Kumar, Syed Ashfaq Ahmed
Summary: The study examines the impact of land use and land cover changes on ground temperatures, urban heat islands, and city thermal fields. The results show that mean land surface temperature decreases while NDVI increases. There are inverse connections between LST and NDVI, and positive correlations between LST and NDBI. It is important to evaluate the impact of LULC change on the thermal environment and study the connection between LULC shifts and changes in land surface temperature.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Physics, Multidisciplinary
F. P. An, W. D. Bai, A. B. Balantekin, M. Bishai, S. Blyth, G. F. Cao, J. Cao, J. F. Chang, Y. Chang, H. S. Chen, H. Y. Chen, S. M. Chen, Y. Chen, Y. X. Chen, Z. Y. Chen, J. Cheng, Z. K. Cheng, J. J. Cherwinka, M. C. Chu, J. P. Cummings, O. Dalager, F. S. Deng, Y. Y. Ding, X. Y. Ding, M. V. Diwan, T. Dohnal, D. Dolzhikov, J. Dove, H. Y. Duyang, D. A. Dwyer, J. P. Gallo, M. Gonchar, G. H. Gong, H. Gong, W. Q. Gu, J. Y. Guo, L. Guo, X. H. Guo, Y. H. Guo, Z. Guo, R. W. Hackenburg, Y. Han, S. Hans, M. He, K. M. Heeger, Y. K. Heng, Y. K. Hor, Y. B. Hsiung, B. Z. Hu, J. R. Hu, T. Hu, Z. J. Hu, H. X. Huang, J. H. Huang, X. T. Huang, Y. B. Huang, P. Huber, D. E. Jaffe, K. L. Jen, X. L. Ji, X. P. Ji, R. A. Johnson, D. Jones, L. Kang, S. H. Kettell, S. Kohn, M. Kramer, T. J. Langford, J. Lee, J. H. C. Lee, R. T. Lei, R. Leitner, J. K. C. Leung, F. Li, H. L. Li, J. J. Li, Q. J. Li, R. H. Li, S. Li, S. C. Li, W. D. Li, X. N. Li, X. Q. Li, Y. F. Li, Z. B. Li, H. Liang, C. J. Lin, G. L. Lin, S. Lin, J. J. Ling, J. M. Link, L. Littenberg, B. R. Littlejohn, J. C. Liu, J. L. Liu, J. X. Liu, C. Lu, H. Q. Lu, K. B. Luk, B. Z. Ma, X. B. Ma, X. Y. Ma, Y. Q. Ma, R. C. Mandujano, C. Marshall, K. T. McDonald, R. D. McKeown, Y. Meng, J. Napolitano, D. Naumov, E. Naumova, T. M. T. Nguyen, J. P. Ochoa-Ricoux, A. Olshevskiy, H. -R. Pan, J. Park, S. Patton, J. C. Peng, C. S. J. Pun, F. Z. Qi, M. Qi, X. Qian, N. Raper, J. Ren, C. Morales Reveco, R. Rosero, B. Roskovec, X. C. Ruan, B. Russell, H. Steiner, J. L. Sun, T. Tmej, K. Treskov, W. -H. Tse, C. E. Tull, B. Viren, V. Vorobel, C. H. Wang, J. Wang, M. Wang, N. Y. Wang, R. G. Wang, W. Wang, X. Wang, Y. Wang, Y. F. Wang, Z. Wang, Z. Wang, Z. M. Wang, H. Y. Wei, L. H. Wei, W. Wei, L. J. Wen, K. Whisnant, C. G. White, H. L. H. Wong, E. Worcester, D. R. Wu, Q. Wu, W. J. Wu, D. M. Xia, Z. Q. Xie, Z. Z. Xing, H. K. Xu, J. L. Xu, T. Xu, T. Xue, C. G. Yang, L. Yang, Y. Z. Yang, H. F. Yao, M. Ye, M. Yeh, B. L. Young, H. Z. Yu, Z. Y. Yu, B. B. Yue, V. Zavadskyi, S. Zeng, Y. Zeng, L. Zhan, C. Zhang, F. Y. Zhang, H. H. Zhang, J. L. Zhang, J. W. Zhang, Q. M. Zhang, S. Q. Zhang, X. T. Zhang, Y. M. Zhang, Y. X. Zhang, Y. Y. Zhang, Z. J. Zhang, Z. P. Zhang, Z. Y. Zhang, J. Zhao, R. Z. Zhao, L. Zhou, H. L. Zhuang, J. H. Zou
Summary: We present a new determination of the smallest neutrino mixing angle 013 and the mass-squared difference Delta m232 using a final sample of 5.55 x 106 inverse beta-decay (IBD) candidates with the final-state neutron captured on gadolinium. Compared to the previous Daya Bay results, selection of IBD candidates has been optimized, energy calibration refined, and treatment of back-grounds further improved. The resulting oscillation parameters are sin22013 = 0.0851 +/- 0.0024, Delta m232 = (2.466 +/- 0.060) x 10-3 eV2 for the normal mass ordering or Delta m232 = -(2.571 +/- 0.060) x 10-3 eV2 for the inverted mass ordering.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
James Lough, Emil Schreiber, Fabio Bergamin, Hartmut Grote, Moritz Mehmet, Henning Vahlbruch, Christoph Affeldt, Marc Brinkmann, Aparna Bisht, Volker Kringel, Harald Luck, Nikhil Mukund, Severin Nadji, Borja Sorazu, Kenneth Strain, Michael Weinert, Karsten Danzmann
Summary: Photon shot noise, caused by the quantum nature of light, currently limits the sensitivity of gravitational wave observatories. However, a successful reduction of quantum noise at the GEO 600 observatory provides important insights for improving detector performance and understanding noise sources.
PHYSICAL REVIEW LETTERS
(2021)
Article
Environmental Sciences
Xiaoya Tang, Sidong Zeng, Guoxian Huang, Sichen Tong, Fei Qiao, Yuanxin Ren, Xingxing Zhang
Summary: The study focuses on how to improve hydrodynamic conditions in the Three Gorges Reservoir area to mitigate sedimentation and phosphorus retention. The tide-type operation method is proposed and it is found to be effective in reducing sedimentation and TP retention.
ENVIRONMENTAL RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Joao Barata, Ana C. Azeredo, Jorge Gomes, Luis Duarte
Summary: Outcrop observations provide valuable insights into the variability of depositional architecture, facies, and reservoir properties, which cannot be fully captured by subsurface studies limited to well locations. By analyzing two case studies of high-energy shallow-water carbonate systems, it is observed that depositional geometries and heterogeneities vary at different scales, influenced by hydrodynamics and carbonate factory productivity. Understanding and addressing small-scale heterogeneities and related geological factors are crucial for conceptual geological models and reservoir characterization.
MARINE AND PETROLEUM GEOLOGY
(2022)