Results 41 to 50 of about 2,224,936 (294)

Tight gas detection based on the reflectivity dispersion technology

Petroleum Exploration and Development, 2014
The study focuses on the reflectivity dispersion caused by velocity dispersion related to pore fluid and its application to identify tight gas reservoirs.
Zhifang YANG, Hong CAO, Huizhu YANG, Xinfei YAN   +3 more
doaj   +1 more source

Nonlinear FAVO Dispersion Quantification Based on the Analytical Solution of the Viscoelastic Wave Equation

Geofluids, 2020
Wave-induced fluid flow is the main cause of seismic attenuation and dispersion. So the estimated velocity dispersion information can be used to identify reservoir fluid and effectively reduce the risk of reservoir drilling.
Yuanqiang Li, Jingye Li, Xiaohong Chen, Jian Zhang, Chen Zhou, Wei Tang   +5 more
doaj   +1 more source

Velocity distributions, dispersion and stretching in three-dimensional porous media

Journal of Fluid Mechanics, 2020
Using index matching and particle tracking, we measure the three-dimensional velocity field in an isotropic porous medium composed of randomly packed solid spheres.
M. Souzy, H. Lhuissier, Yves Méheust, T. Borgne, B. Metzger   +4 more
semanticscholar   +1 more source

Hydraulic permeability prediction from attenuation in an oil well using the squirt flow model

Geofísica Internacional
A practical methodology is presented for estimating the hydraulic permeability from the wave attenuation at sonic frequencies using the poroelastic squirt flow model associated with the mechanism that encompasses the interaction between solid and fluid ...
Joseline Mena-Negrete, Raúl Del Valle García, Enrique Coconi-Morales   +2 more
doaj   +1 more source

EXPERIMENTAL STUDY OF LIQUID DISPERSION IN BUBBLE COLUMN

Diyala Journal of Engineering Sciences, 2008
The main object of this study is to investigate the influence of column diameter and superficial gas velocity on liquid phase dispersion coefficients (axial and radial dispersion coefficients), mixing times, gas holdup, and bubble dynamics (bubble ...
Hayder Abd Al-kaream Muhsin
doaj   +1 more source

GRAVITATIONAL CONTRACTION VERSUS SUPERNOVA DRIVING AND THE ORIGIN OF THE VELOCITY DISPERSION–SIZE RELATION IN MOLECULAR CLOUDS [PDF]

, 2015
Molecular cloud (MC) observations show that clouds have non-thermal velocity dispersions that scale with the cloud size as σ ∝ R1/2 at a constant surface density, and for varying surface density scale with both the cloud’s size and surface density, σ2 ...
J. C. Ibáñez-Mejía, M. Mac Low, R. Klessen, C. Baczynski   +3 more
semanticscholar   +1 more source

Properties of individual S-bursts observed in the frequency band of 10–32 MHz during the rising phase of 25-th solar cycle

Frontiers in Astronomy and Space Sciences
Introduction: The properties of the S-bursts observed during the storm on 20–21 June 2022 in frequency band 10–32 MHz by the radio telescope URAN-2 are discussed in this paper.
V. V. Dorovskyy, V. N. Melnik, A. I. Brazhenko, A. V. Frantsuzenko   +3 more
doaj   +1 more source

A CLEAR AGE–VELOCITY DISPERSION CORRELATION IN ANDROMEDA’S STELLAR DISK [PDF]

, 2015
The stellar kinematics of galactic disks are key to constraining disk formation and evolution processes. In this paper, for the first time, we measure the stellar age–velocity dispersion correlation in the inner 20 kpc (∼3.5 disk scale lengths) of M31 ...
C. Dorman, P. Guhathakurta, A. Seth, D. Weisz, E. Bell, J. Dalcanton, K. Gilbert, K. Hamren, A. Lewis, E. Skillman, E. Toloba, B. Williams   +11 more
semanticscholar   +1 more source

Velocity Dispersion of Ionized Gas and Multiple Supernova Explosions

Open Astronomy, 2015
We use 3D numerical simulations to study the evolution of the Hα intensity and velocity dispersion for single and multiple supernova (SN) explosions. We find that the IHα– σ diagram obtained for simulated gas flows is similar in shape to that observed in
Vasiliev E. O., Moiseev A. V., Shchekinov Yu. A.   +2 more
doaj   +1 more source

ESTIMASI SEBARAN HIDROKARBON DENGAN MENGGUNAKAN INDIKATOR P-WAVE DIFFERENCE DISPERSION FACTOR PADA LAPANGAN BONAPARTE

JGE, 2020
In the hydrocarbon  exploration, we need the method that result the direct hydrocarbon indicator to estimate the reservoir location and dimension accurately. It is a difficult and long standing problem.
Mokhammad Puput Erlangga, Handoyo Handoyo, Egie Wijaksono   +2 more
doaj   +1 more source