Results 51 to 60 of about 5,297 (218)

Fault Stability Assessment in Tectonically Active Geothermal Fields Through Integrated Stress Analysis

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract The Tulu Moye geothermal field in the actively deforming Main Ethiopian Rift presents substantial potential for renewable energy production, where interactions between fault systems, hydrothermal fluids, and tectonic activity require careful management for sustainable development. Here we present a first‐order assessment of fault stability and
Roberto Emanuele Rizzo, Derek Keir, Ameha Muluneh, Snorri Guðbrandsson, David Healy, Federico Sani, Giacomo Corti, Paola Vannucchi   +7 more
wiley   +1 more source

Sequential Fracture Activation and Stress Evolution During EGS Stimulation at Utah FORGE Revealed by Waveform Cross‐Correlation

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Mapping fracture networks in Enhanced Geothermal Systems (EGS) is essential for optimizing reservoir performance, yet complex fracture evolution during stimulation remains difficult to resolve. This study examines the evolution of microseismicity and fracture networks during stage 3 of the 2022 EGS stimulation at the Utah Frontier Observatory ...
Richard Asirifi, Xiaowei Chen, Ahmad Mohammadi, Nori Nakata, Pranshu Ratre   +4 more
wiley   +1 more source

Frictional Stabilities on Induced Earthquake Fault Planes at Fox Creek, Alberta: A Pore Fluid Pressure Dilemma

, 2019
Earthquakes induced during hydraulic fracturing operations have occurred in a number of locales. However, in-situ studies aimed to discern the triggering mechanism remains exclusively statistical in their nature.
Schmitt, Douglas R., Schultz, Ryan, Shen, Luyi W.   +2 more
core   +1 more source

Data on shale-water based drilling fluid interaction for drilling operation [PDF]

, 2018
The shale dispersion test (rolling test) is a common procedure that is used to measure the interactions between drilling fluids and shales. The shale rolling test depends on the moisture content of the shale, the shale composition, the viscosity of the ...
Dosunmu, Adewale, Ekeinde, Evelyn Bose, Igwilo, K. C., Mamudu, Angela Onose, Okoro, Emeka Emmanuel   +4 more
core   +1 more source

Alkali Solution Erodes Shale: Influencing Factors and Structural Damage Characteristics

Journal of Chemistry, 2018
High-pH drilling fluids are often used for drilling shale gas wells. Alkali erosion of shale is one of the important factors of wellbore instability.
Jiping She, Hao Zhang, Ying Zhong, Yang Yuan, Jiachun You   +4 more
doaj   +1 more source

Thermodynamic analysis of a novel fossil-fuel–free energy storage system with a trans-critical carbon dioxide cycle and heat pump [PDF]

, 2020
This paper presents and analyzes a novel fossil-fuel–free trans-critical energy storage system that uses CO2 as the working fluid in a closed loop shuttled between two saline aquifers or caverns at different depths: one a low-pressure reservoir and the ...
Hao, Y, He, Q, Liu, W, Oldenburg, CM, Pan, L   +4 more
core   +1 more source

Elastic-brittle-plastic behaviour of shale reservoirs and its implications on fracture permeability variation: an analytical approach [PDF]

, 2018
Shale gas has recently gained significant attention as one of the most important unconventional gas resources. Shales are fine-grained rocks formed from the compaction of silt and clay sized particles and are characterised by their fissured texture and ...
Hashemi, Amid, Marshall, Alec M., Masoudian, Mohsen S., Tasalloti, Ali   +3 more
core   +2 more sources

Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells

Energy Science &Engineering, Volume 14, Issue 2, Page 854-865, February 2026.
Accounting for wellbore collapse debris and the bulldozer effect, this study develops models for permeable and impermeable sand bridge sticking in deep CBM horizontal wells, deriving resistance and volume formulations. Validated in Changqing, results show impermeable bridges dominate; controls (fluid optimization, staged drilling, circulation, speed ...
Cheng Hui, Yong Ouyang, Zhifeng Duan, Xiaoyue Xu, Yuxiang Teng, Mingyang Liu, Hui Zhang, Long Chen   +7 more
wiley   +1 more source

Enhancing drilling operations: prioritizing wellbore integrity, formation preservation, and effective mud waste control (case study)

Journal of Engineering and Applied Science
This study examined the issues of wellbore instability encountered during the drilling of the vertical exploration Al-Rateena-1 well, Block 25D, Al-Rawat Field, Sudan.
Ahmed Abdelaziz Ibrahim Elrayah
doaj   +1 more source

Complex Fluids and Hydraulic Fracturing [PDF]

, 2016
Nearly 70 years old, hydraulic fracturing is a core technique for stimulating hydrocarbon production in a majority of oil and gas reservoirs. Complex fluids are implemented in nearly every step of the fracturing process, most significantly to generate ...
Alford J, Barnes HA, Bear J, Bird RB, Bivins CH, Carter BJ, Curtis JB, Daneshy A, Dietrich RV, Ely JW, Geertsma J, Grebe JJ, Guazzelli E, Gulbis J, Howard GC, Howard GC, Hubbert MK, Larson RG, Larson RG, Lim EJ, Lockner DA, Macosko CW, Mathur NK, McCarthy K, Mewis J, Mills P, Rice J, Richardson JF, Rodd LE, Scheidegger AE, Selley RC, Sharma MM, Smith MB, Thomas RL, Tiab D, Warpinski NR, Yew CH   +36 more
core   +1 more source