Results 121 to 130 of about 903,663 (292)

Ensemble of Neural Networks Utilizing Seismic Attributes for Rock‐Property Inversion With Uncertainty Estimation

Earth and Space Science
Seismic inversion holds significant importance across various domains of geoscience and engineering, including the characterization of energy resource reservoirs, the assessment of polluted sites, and CO2 storage.
M. Ntibahanana, S. Jianguo, M. Luemba, K. Tondozi, G. Imani, B. Mohamed   +5 more
doaj   +1 more source

Correlation of artificial neural network and multi-attribute transformation: a test case to predict the effective porosity of Cretaceous sandstones of the Sembar Formation, southeast Pakistan

Frontiers in Earth Science
Accurate prediction of reservoir properties through linear transformation and regression methods are successful in limited cases but are often geologically unrealistic and have no concrete theoretical foundation.
Furqan Aftab, Furqan Aftab, Furqan Aftab, Furqan Aftab, Mohammad Zafar, Muhammad Iqbal Hajana, John H. Shaw   +6 more
doaj   +1 more source

Deteriorated Hysteresis Behavior of Reinforced Concrete Bridge Columns With Lap‐Spliced Circular Hoop Reinforcement

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Five lap‐spliced circular hoop (CH) concrete bridge columns, designed in accordance with the current Japanese bridge design code and Taiwan bridge design practice, were tested in this study to investigate the effects of longitudinal reinforcement and aspect ratios on deteriorated hysteresis behavior.
Ping‐Hsiung Wang, Cheng‐Yu Huang, Chiao‐Chu Tseng   +2 more
wiley   +1 more source

Seismic Attributes for Carbonates

, 2009
Seismic attributes can reveal important information about rock properties, and rock physics modeling provide a link between geological and seismic parameters. Carbonate rocks can have wide variations in properties due to their origin and susceptibility to post-depositional diagenetic processes.
openaire   +1 more source

A Three‐Parameter Continuum Timoshenko Beam Framework for Evaluating Higher‐Mode Effects in High‐Rise Buildings With Rotational and Translational Base Flexibility

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Higher‐mode effects can significantly amplify seismic demands in high‐rise buildings, causing unintended damage over the building height. Engineered mechanisms are introduced at the base of these structures to mitigate higher‐mode effects. Existing continuum formulations for base‐flexible buildings commonly idealize the superstructure as a ...
Mohammad Hossein Asadi Jafari, Jianhui Zhou, Fei Tong   +2 more
wiley   +1 more source

Delineating Plio-Pleistocene channels (gas reservoirs) via seismic attributes in Baltim Gas Field, Nile Delta, Egypt

Mongolian Geoscientist
The Baltim gas fields in the offshore Nile Delta contain substantial gas condensate accumulations. This study aims to identify Pleistocene (El-Wastani formation) and Pliocene (Kafr El-Sheikh formation) reservoirs.
Ali Saeed Ali El-Sayed, Walid Mohamed Mabrouk, Ahmed Mohsen Metwally   +2 more
doaj   +1 more source

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

Energy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Characteristics Analysis and Stage Division of Class Ⅰ Gas Hydrate Deposit Developed by Vertical Well and Depressurization Based on Numerical Analysis

Energy Science &Engineering, EarlyView.
The production process can be divided into two stages according to the relationship between the gas production rate and the decomposition gas rate. The ratio of cumulative decomposition gas to cumulative gas production can be used to evaluate the contribution of the gas hydrate layer.
Nu Lu, Bo Zhang, Jian Hou, Yajie Bai, Yongge Liu   +4 more
wiley   +1 more source

Multi-scale fracture characterization method for transitional shale reservoir based on post-stack multi-attribute ant-tracking fusion and pre-stack wide-azimuth gathers AVAZ analysis

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Transitional shale gas represents a significant domain for exploration in the oil and gas sector. The distribution area is extensive, and the resource potential is significant, representing approximately 25% of China's total shale gas resources ...
Hongjie Peng, Jingtao Zhao, Zhen Qiu, Qin Zhang, Wen Liu, Weiliang Kong, Wanli Gao, Tongjie Sheng, Wenyu Li, Yugang Yang   +9 more
doaj   +1 more source

Study on Fluid Pressure in Tubing, Dynamic Stress in Reservoir, and Fracture Propagation Morphology During Variable‐Rate Hydraulic Fracturing

Energy Science &Engineering, EarlyView.
Variable‐rate hydraulic fracturing can induce unsteady flow in the tubing, thereby generating fluctuating fluid pressure near the bottom‐hole reservoir. Dynamic stress is generated in the reservoir under the action of fluctuating fluid pressure and propagates as stress waves.
Zhu Ge, Wang Chaojing, Li Weicheng
wiley   +1 more source