نتایج جستجو برای: hydraulic stimulation

تعداد نتایج: 278955  

Journal: :basic and clinical neuroscience 0
shapour jaberzadeh maryam zoghi

during the past .. years, non-invasive .rain stimulation has .ecome an emerging .eld in clinical neuroscience due to its capability to transiently modulate corticospinal excitability, motor and cognitive functions. .hereas transcranial magnetic stimulation has .een used e.tensively since more than t.o decades ago as a potential .neuromodulator., transcranial current stimulation .tcs. has more r...

Journal: :Geomechanics and geophysics for geo-energy and geo-resources 2023

Abstract Pore pressure is a crucial factor affecting reservoir stimulation, especially in unconventional reservoirs, because it can control crack initiation and propagation. However, studies on the effect of initial pore hydraulic fracturing low-permeability reservoirs are lacking, mechanism remains unclear. Therefore, we conducted tests under pressure, proposed an improved criterion to elucida...

Journal: :Geotechnics 2023

Electromagnetic (EM) waves, traditionally used for purposes such as geophysical characterization, impact properties to be measured. This paper describes the effects of radio frequency (RF) waves on hydraulic conductivity glass beads and natural sand. A series tests was conducted using a customized, rigid-wall, cylindrical permeameter inside resonant cavity made Plexiglas covered with electrical...

Journal: :basic and clinical neuroscience 0
maryam rostami mehrshad golesorkhi hamed ekhtiari

transcranial current stimulation (tcs) is a neuromodulation method in which the patient is exposed to a mild electric current (direct or alternating) at 1-2 ma, resulting in an increase or a decrease in the brain excitability. this modi.cation in neural activities can be used as a method for functional human brain mapping with causal inferences. this method might also facilitate the treatments ...

2000
R. Burrows Q. Qiu

sures experienced by a pipeline can be either beneficial or detrimental from an operational performance perspective, depending on the amount, the two phase regime of the mixture (whether homogeneous or slug) and the nature and cause of the transient. It is generally held that when free (undissolved) air, or gas, is present in a hydraulic system, it can greatly reduce the surge pressure levels b...

2011
Pengcheng Fu Scott M. Johnson Yue Hao Charles R. Carrigan Lawrence Livermore

The primary objective of our current research is to develop a computational test bed for evaluating borehole techniques to enhance fluid flow and heat transfer in enhanced geothermal systems (EGS). Simulating processes resulting in hydraulic fracturing and/or the remobilization of existing fractures, especially the interaction between propagating fractures and existing fractures, represents a c...

ژورنال: ژئومکانیک نفت 2019

Naturally fractured carbonate reservoirs (NFCRs) comprise the majority of the oil and gas reservoirs around the Persian Gulf.  Many of these reservoirs have a long history of exploitation, but vast amounts of oil remain in place.  A major redevelopment process for light oil based NFRs will likely be the use of horizontal wells combined with gravity drainage at constant pressure based on voidage...

2005
Stripper Wells

Enhanced fracture stimulation processes are generally used in the petroleum industry to increase the recovery of hydrocarbon reserves. In the in the United States in particular, more efficient and cost-effective reservoir fracturing treatments are needed to enhance the recovery of oil and natural gas in those stripper wells that are characterized by low-permeability reservoirs. Proposed is a we...

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