Results 41 to 50 of about 5,239 (198)

Mechanical property variation mechanisms of granite subjected to real‐time high temperatures and subsequent cooling treatment

Deep Underground Science and Engineering, EarlyView.
This study investigates the coupled thermo‐mechanical behavior of granite during heating and cooling through a combination of laboratory tests and finite element analysis. The thermal conductivity, mineral composition, mass loss rate, micro‐crack observation, and thermal fracture characteristics of granite under various temperature conditions are ...
Rui Pang, Dehao Meng, Thomas Frühwirt, Hao Liu, Yanan Zhao, Qingyou Zhu, Wengang Dang, Mohamed Ismael, Fei Wang   +8 more
wiley   +1 more source

Experimental study and prediction method of solid destabilization and production in deep carbonate reservoir during mining

Journal of Rock Mechanics and Geotechnical Engineering
Wellbore instability is one of the significant challenges in the drilling engineering and during the development of carbonate reservoirs, especially with open-hole completion.
Bo Zhou, Changyin Dong, Fansheng Huang, Dongyu Xue, Haobin Bai, Guolong Li   +5 more
doaj   +1 more source

Modelling of a Gas Cap Gas Lift System [PDF]

, 2011
Imperial Users ...
Okenwa, Junior Chukwudi, Okenwa, Junior Chukwudi   +1 more
core  

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

Energy Science &Engineering, EarlyView.
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

Quantifying Parametric Influence on Cuttings Transport in Deviated Deep Wells Using Global Sensitivity Analysis Methods

Energy Science &Engineering, EarlyView.
Cuttings transport simulation workflow. ABSTRACT Efficient cuttings transport is essential for wellbore stability and minimizing non‐productive time in deviated and horizontal wells. This study applies global sensitivity analysis (GSA) to evaluate the influence of 14 drilling parameters on cuttings transport using WellPlanTM hydraulic simulations ...
Esraa A. Refaie, Said K. El‐Sayed, Ahmed Z. Noah, Mostafa M. Abdelhafiz   +3 more
wiley   +1 more source

Determination of Safe Mud Weight Window in Rumaila Oilfield, Southern Iraq

Iraqi Geological Journal, 2021
The oil and gas industry, wellbore instability plays an important role in financial losses and stops the operations while the drilling which leads to extra time known as non-productive time.
Walaa Khyrie, Ayad Alrazzaq
doaj   +1 more source

A Deep Learning Dataset for Pre‐Drill Geohazard Assessment in Taranaki Basin New Zealand

Geoscience Data Journal, Volume 13, Issue 1, January 2026.
An open, comprehensive Taranaki Basin dataset that couples 17 well‐extracted seismic attributes with interpreted rock‐physical properties (pore pressure, caliper, logs) to enable robust, reproducible pre‐drill assessment of four drilling geohazards—normal, collapse, overpressure, and combined conditions—and to provide a ready benchmark for machine ...
Zhi Geng, Zhijing Bai, Yan Cui, Yanfei Wang, Wenyong Pan, Caixia Yu, Hongzhou Zhang   +6 more
wiley   +1 more source

ENVIRONMENTAL SUSTAINABILITY OF OIL INDUSTRY [PDF]

, 2013
Similarly to most industrial activities, the oil industry can affect the environment at several stages. The greatest impact is the release of waste into the environment in concentrations that are not natural.
Rocca, Vera, Viberti, Dario
core   +1 more source

Integrating Copper Slag Into Thermally Active Building Foundations: A Pathway to Sustainable Underground Energy Storage Systems

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Underground thermal energy storage (UTES) integrated with building foundations is an emerging pathway to decarbonize space conditioning by shifting low‐carbon heat across seasons. This review evaluates copper slag, a high‐density, thermally stable byproduct of smelting, as a dual‐function medium for thermally active foundations.
Michael Enemuo, Arash Dahi Taleghani, Ngozi Enemuo, Olumide Ogunmodimu, Sivaraj Durairaj   +4 more
wiley   +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