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Influence of Intrinsic Permeability on the Production Performance of Shenhu Hydrate Sediment through Depressurization [PDF]

open access: yesE3S Web of Conferences, 2019
Natural gas hydrate(NGH) is a clean resource with huge reserves. The depressurization method is an economical and effective exploitation method. In the process of depressurization, reservoir absolute permeability has an important influence on production ...
Ma Yingrui, Li Shuxia, Wu Didi
doaj   +2 more sources

Ventilation approaches and radon control in Canadian houses [PDF]

open access: yesFrontiers in Public Health
IntroductionBalanced mechanical ventilation with heat (sensible heat only) or energy (sensible and latent heat) recovery has the potential to dilute indoor radon and may be an appropriate first step at reducing moderate indoor radon concentration in a ...
Janet Gaskin   +3 more
doaj   +2 more sources

Mechanism research on technical policy of liquid extraction depressurization development for buried hill reservoirs [PDF]

open access: yesE3S Web of Conferences, 2021
Most of buried hill reservoirs are in the late stage of water flooding development, especially for this kind of reservoir with large water-oil volume ratio, it is more difficult to develop the residual oil in matrix system.
Guan Huajiao   +4 more
doaj   +2 more sources

Numerical Simulation of Gas Hydrate Production Using the Cyclic Depressurization Method in the Ulleung Basin of the Korea East Sea

open access: yesApplied Sciences, 2021
The depressurization method is known as the most productive and effective method for successful methane recovery from hydrate deposits. However, this method can cause considerable subsidence because of the increased effective stress.
Taehun Lee   +3 more
doaj   +1 more source

Spacecraft Launch Depressurization Loads [PDF]

open access: yesJournal of Spacecraft and Rockets, 1997
The pressure variation inside the launch vehicle fairing during climb through the atmosphere induces structural loads on the walls of closed-type spacecrafts or equipment boxes. If the evacuation of the air is not fast enough, excessive pressure loading can result in damage of elements exposed to the rising pressure jump, which depends mainly on the ...
Sanz Andres, Angel Pedro   +2 more
openaire   +2 more sources

Evaluation of the Effects of Nano-SiO2 Microemulsion on Decompression and Augmented Injection in the Eunan Tight Reservoir

open access: yesAppliedChem, 2023
The residual oil saturation of the matrix near the well zone of a tight reservoir is high due to the tight reservoir’s complex conditions, such as the small pore throat radius and low permeability of the matrix and the development of microfractures ...
Ke Wu   +3 more
doaj   +1 more source

The Feasibility of Using Pulsed-Vacuum in Stimulating Calcium-Alginate Hydrogel Balls

open access: yesFoods, 2021
The effect of the pulsed-vacuum stimulation (PVS) on the external gelation process of calcium-alginate (Ca-Alg) hydrogel balls was studied. The process was conducted at four different working pressures (8, 35, 61, and 101 kPa) for three pulsed-vacuum ...
Janjira Jinnoros   +4 more
doaj   +1 more source

Numerical simulations of depressurization‐induced gas production from hydrate reservoirs at site GMGS3‐W19 with different free gas saturations in the northern South China Sea

open access: yesEnergy Science & Engineering, 2021
Class 1 hydrate reservoirs are regarded as the most promising targets for gas production. Previous investigations in the northern South China Sea have proven that the low‐permeability hydrate reservoir at site GMGS3‐W19 is a Class 1 hydrate deposit ...
Peixiao Mao   +7 more
doaj   +1 more source

Gas Discharge Resistance and Medium Damage Degree as Hydrate Dissociation at Different Ambient Conditions

open access: yesFrontiers in Energy Research, 2021
For the investigation on some hydrate dissociation behaviors at different ambient conditions, methane hydrates formed inside porous media with different saturations were dissociated by depressurizations.
Xueping Chen   +9 more
doaj   +1 more source

Numerical and experimental investigation on the depressurization capacity of a new type of depressure-dominated jet mill bit [PDF]

open access: yesPetroleum Science, 2020
AbstractEfficient cuttings transport and improving rate of penetration (ROP) are two major challenges in horizontal drilling and extended reach drilling. A type of jet mill bit (JMB) may provide an opportunity to catch the two birds with one stone: not only enhancing cuttings transport efficiency but also improving ROP by depressuring at the bottom ...
Xu-Yue Chen   +5 more
openaire   +1 more source

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