Results 61 to 70 of about 102,181 (202)

Research on optimization of conductivity of multilevel fractures in tight sandstone based on similar circuit principle

open access: yesEnergy Science & Engineering
Volume fracturing technology is commonly used to develop tight sandstone reservoirs. During the fracturing process, it is important to not only focus on achieving a larger stimulation volume but also on creating a fracture network conductivity that is ...
Hui Xiao   +3 more
doaj   +1 more source

UNICEF IWASH Project, Northern Region, Ghana : an adapted training manual for groundwater development [PDF]

open access: yes, 2011
This report is an adapted training manual, with specific best practice recommendations for groundwater development practitioners working in the Northern Region, Ghana.
Beamish, D.   +3 more
core  

Regional similarities in the distributions of well yield from crystalline rocks in Fennoscandia [PDF]

open access: yes, 2010
Well yields from Precambrian and Palaeozoic bedrock in Norway, Sweden and Finland exhibit very similar and approximately log-normal distributions: all three data sets exhibit a median yield of 600–700 L hr-1, despite the differences in climate and ...
Banks, D.   +4 more
core  

Electro-Magnetic Earthquake Bursts and Critical Rupture of Peroxy Bond Networks in Rocks

open access: yes, 2006
We propose a mechanism for the low frequency electromagnetic emissions and other electromagnetic phenomena which have been associated with earthquakes. The mechanism combines the critical earthquake concept and the concept of crust acting as a charging ...
Allègre   +158 more
core   +1 more source

Statistical analyses of reservoir and fracturing parameters for a multifractured shale oil reservoir in Mississippi

open access: yesEnergy Science & Engineering, 2020
The use of multifractured horizontal wells has improved the efficiency of hydrocarbon extraction from shale gas and oil plays. It is highly desirable to estimate the characteristics of the reservoir and well fracturing through production data analysis ...
Xu Yang, Boyun Guo
doaj   +1 more source

First-principles study, fabrication and characterization of (Zr0.25Nb0.25Ti0.25V0.25)C high-entropy ceramic [PDF]

open access: yes, 2019
The formation possibility of a new (Zr0.25Nb0.25Ti0.25V0.25)C high-entropy ceramic (ZHC-1) was first analyzed by the first-principles calculations and thermodynamical analysis and then it was successfully fabricated by hot pressing sintering technique ...
Chu, Yanhui   +5 more
core   +2 more sources

Nonuniversal conductivity exponents in continuum percolating Gaussian fractures [PDF]

open access: yes, 2008
We study the electrical and hydraulic conductivity percolation exponents in a Gaussian fracture using the method proposed in Plouraboué et al. [Phys. Rev. E 73, 036305, 2006].
Flukiger, Frédérique   +2 more
core   +2 more sources

Coupled h-m fracture interaction using fem with zero-thickness interface elements [PDF]

open access: yes, 2017
Intensive hydraulic fracturing is a procedure employed for low permeability reservoir stimulation. This technique consists of generating a sequence of regularly spaced parallel fractures (multi-stage fracturing). The generation of a fracture involves the
Alvarellos, J.   +4 more
core  

Permeability Estimates of Self-Affine Fracture Faults Based on Generalization of the Bottle Neck Concept [PDF]

open access: yes, 2010
We propose a method for calculating the effective permeability of two-dimensional self-affine permeability fields based on generalizing the one-dimensional concept of a bottleneck.
A. Hansen   +31 more
core   +3 more sources

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