نتایج جستجو برای: gas permeability

تعداد نتایج: 292382  

2016
Rainer Senger Enrique Romero Paul Marschall

The characterization of gas migration through low-permeability clay formations has been a focus of R&D programs for radioactive waste disposal, which is also of great importance for shale-gas exploration, and cap-rock behavior of hydrocarbon reservoirs and CO2 sequestration. Laboratory tests on Opalinus clay cores from a shallow borehole in the Mont Terri Underground Research Laboratory (URL) a...

2012
H. Mukhtar N. M. Noor R. Nasir

The main aim of this work is to develop a model of hydrogen sulfide (H2S) separation from natural gas by using membrane separation technology. The model is developed by incorporating three diffusion mechanisms which are Knudsen, viscous and surface diffusion towards membrane selectivity and permeability. The findings from the simulation result shows that the permeability of the gas is dependent...

2012
Yu-Shu Wu Jianfang Li Didier Ding Cong Wang

Unconventional gas resources from tight sand and shale gas reservoirs have received great attention in the past decade around the world, because of their large reserves as well as technical advances in developing these resources. As a result of improved horizontal drilling and hydraulic fracturing technologies, the progresses are being made towards commercial gas production from such reservoirs...

Journal: :فیزیک زمین و فضا 0
علی مرادزاده استاد، دانشکده مهندسی معدن و ژئوفیزیک، دانشگاه صنعتی شاهرود فرامرز دولتی ارده جانی استاد، دانشکده مهندسی معدن و ژئوفیزیک، دانشگاه صنعتی شاهرود رضا روکی دانشجوی دکتری مهندسی اکتشاف معدن، دانشکده مهندسی معدن و ژئوفیزیک، دانشگاه صنعتی ماشااله رحیمی کارشناس ارشد مهندسی اکتشاف نفت، مدیریت اکتشاف شرکت ملی نفت ایران

the permeability is a main property of oil reservoirs that shows the ability of rocks in the conduct of fluids such as oil, water and gas through the pore spaces of reservoir. the determination of the permeability is a crucial task in reserve estimation, production and development of oil reservoirs. due to this, an accurate estimate of such important reservoir rock parameter should not be made ...

Journal: :iranian journal of oil & gas science and technology 2012
sajjad gholinezhad mohsen masihi

the prediction of porosity is achieved by using available core and log data; however, the estimationof permeability is limited to the scare core data. hence, porosity and saturation data through theframework of flow units can be used to make an estimation of reservoir permeability. the purposeof this study is to predict the permeability of a carbonate gas reservoir by using physical-basedempiri...

2015
Colin A. Scholes George Q. Chen Hiep T. Lu Sandra E. Kentish

Membrane technology can be used for both post combustion carbon dioxide capture and acidic gas sweetening and dehydration of natural gas. These processes are especially suited for polymeric membranes with polyether functionality, because of the high affinity of this species for both H₂O and CO₂. Here, both crosslinked polyethylene glycol diacrylate and a polyether-polyamide block copolymer (PEB...

2009
M. G. De Angelis

This polymer is characterized by relatively high gas permeability, (Р(О2)=800 Barrer, Р(СО2)=4350 Barrer). It is interesting that for the series of gaseous alkanes С1-С4 permeability increases when the size of the penetrant increases and reaches the value Р(С4Н10)=17500 Barrer (at 1 atm). It is also noteworthy that this polymer keeps high permselectivity in separation of the mixture butane/meth...

Carbon dioxide (CO2) release from the exhaust gas streams of power plants that burn fossil fuels contributes the most emission of this gas, which includes more than half of the greenhouse effects. Thus, the separation of CO2 from exhaust gases is one of the main environmental concerns. Membrane technology, due to many advantages, has attracted many research attentions among the various gas sepa...

Journal: :journal of chemical and petroleum engineering 2013
turaj behrouz amir abbas askari

many large oil and gas fields in the most productive world regions happen to be fractured. the exploration and development of these reservoirs is a true challenge for many operators. these difficulties are due to uncertainties in geological fracture properties such as aperture, length, connectivity and intensity distribution. to successfully address these challenges, it is paramount to improve ...

2015
Z. Sadeghi M. R. Omidkhah M. E. Masoomi

Abstract—The purpose of this paper is to examine gas transport behavior of mixed matrix membranes (MMMs) combined with porous particles. Main existing models are categorized in two main groups; two-phase (ideal contact) and three-phase (non-ideal contact). A new coefficient, J, was obtained to express equations for estimating effect of the particle porosity in two-phase and three-phase models. ...

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