Results 21 to 30 of about 240,998 (304)

Investigating Influential Factors of the Gas Absorption Capacity in Shale Reservoirs Using Integrated Petrophysical, Mineralogical and Geochemical Experiments: A Case Study

Energies, 2018
Estimating in situ gas content is very important for the effective exploration of shale gas reservoirs. However, it is difficult to choose the sensitive geological and geophysical parameters during the modeling process, since the controlling factors for ...
Zhuoying Fan, Jiagen Hou, Xinmin Ge, Peiqiang Zhao, Jianyu Liu   +4 more
doaj   +1 more source

Gas-Bearing Characteristics of the Longmaxi Formation Shale in the Changning Area, Southern Sichuan Basin, SW China

Frontiers in Earth Science, 2022
The Changning area, located in the south of the Sichuan Basin, has obtained commercial shale gas from the Silurian Longmaxi Formation, which is characterized by rich organic matter, large hydrocarbon generation, and high gas content.
Chang Lu, Chang Lu, Chang Lu, Lei Chen, Lei Chen, Cui Jing, Xiucheng Tan, Xiucheng Tan, Zhou Nie, Xin Chen, Xin Chen, De Heng   +11 more
doaj   +1 more source

Photoelectric emission from the alkali metal doped vacuum-ice interface [PDF]

, 2009
The photoelectron photoemission spectra and thresholds for low coverages of Li and K adsorbed on water-ice have been measured, compared with photoionization spectra of the gas-phase atoms, and modeled by quantum chemical calculations.
John M. C. Plane, Lide D. R., Lu Q. B., Stephen R. Meech, Tomas Vondrak   +4 more
core   +1 more source

Shale gas content evaluation for deep strata and its variation: a case study of Weirong, Yongchuan gas fields in Sichuan Basin

Shiyou shiyan dizhi, 2022
The exploration and development of shale gas in China are recently focusing on the deep layers. However, the occurring characteristics of shale gas under high temperature and high pressure are not clear, which imposes great restrictions to deep shale gas
Haikun SU, Haikuan NIE, Shaobin GUO, Zhenheng YANG, Donghui LI, Chuanxiang SUN, Ting LU, Mi LIU   +7 more
doaj   +1 more source

The Equilibrium Distribution of Gas Molecules Adsorbed on an Active Surface [PDF]

, 2000
We evaluate the exact equilibrium distribution of gas molecules adsorbed on an active surface with an infinite number of attachment sites. Our result is a Poisson distribution having mean $X = {\mu P P_s \over P_e}$, with $\mu$ the mean gas density ...
I. C. Percival, Indrajit Mitra, L. P. Hughston, M. V. Smoluchowski, M. V. Smoluchowski, N. Gisin, R. H. Fowler, R. H. Fowler, S. Chandrasekhar, Stephen L. Adler   +9 more
core   +3 more sources

A new method to determine varying adsorbed density based on Gibbs isotherm of supercritical gas adsorption

Adsorption Science & Technology, 2018
In the calculation of the absolute adsorption of supercritical gas adsorbed on the microporous materials, most existing methods regard the adsorbed density as a constant, which is very unreasonable.
Hailiang Cai, Peichao Li, Zhixin Ge, Yuxi Xian, Detang Lu   +4 more
doaj   +1 more source

Silica grain catalysis of methanol formation [PDF]

, 2007
The specific catalytic effect of a silica grain on the formation of methanol via the sequential addition of H atoms to CO adsorbed on the surface is investigated.
A. Wander, C. R. A. Catlow, Fraser, Garrod, Hidaka, T. P. M. Goumans, W. A. Brown, Williams, Woon   +8 more
core   +1 more source

Adsorbed gas density model and re-understanding of gas adsorption behavior in coal seam

Meitan xuebao
Clarifying the adsorbed gas density of coal seam is the basis of studying the adsorption characteristics and the real gas content of coalbed methane, but the existing calculation methods of adsorbed gas density do not reflect the influence of temperature
Shouya WU, Weiguo LIANG
doaj   +1 more source

Ordering and order-disorder phase transition in the (1x1) monolayer chemisorbed on the (111) face of an fcc crystal [PDF]

, 2016
In this paper we have considered a simple lattice gas model of chemisorbed monolayer which allows for the harmonic fluctuations of the bond length between the adsorbate atom and the surface site.
Patrykiejew, A., Staszewski, T.
core   +5 more sources

Electronic properties of NH4-adsorbed graphene nanoribbon as a promising candidate for a gas sensor

AIP Advances, 2016
The electronic properties of NH4-adsorbed N = 7 armchair graphene nanoribbons (AGNRs) were theoretically investigated using self-consistent atomistic simulations to explore the feasibility of AGNRs as a gas sensing material. Whereas a pristine AGNR has a
Naoki Harada, Shintaro Sato
doaj   +1 more source