Results 261 to 270 of about 174,002 (295)

Identification of Productive Layers in Low-Permeability Gas Wells

Journal of Petroleum Technology, 1992
Summary This paper presents new guidelines for determining net pay thickness in low-permeability, multilayered gas wells. These criteria were developed from a sensitivity study performed with an analytical solution for compmlex multilayered reservoirs.
J.L. Johnston, W.J. Lee
openaire   +1 more source

Identification of Preform Permeability Distribution in Resin Transfer Molding

CAE and Related Innovations for Polymer Processing, 2000
Abstract This paper presents a numerical scheme that directly calculates the permeability field of the preform during the Resin Transfer Molding (RTM) process. The measured filling front locations as well as the corresponding inlet conditions are used in the proposed scheme to calculate the permeability field. The proposed scheme employs
B. Minaie, Y. F. Chen, A. M. Mescher
openaire   +1 more source

Self-Organizing Maps for Lithofacies Identification and Permeability Prediction

Proceedings of SPE Annual Technical Conference and Exhibition, 2004
Abstract Methods of Artificial Intelligence like Back-Propagation Neural Networks (BPNN) have become popular software tools to predict permeability and porosity from well logs during the last several years. Similar to Multiple-Linear Regression models, Back- Propagation Neural Networks are trained with a set of target ...
Michael Stundner, Christian Oberwinkler
openaire   +1 more source

Time lag parametric identification of a hydrogen permeability model

Technical Physics, 2010
An inverse problem with dynamic boundary conditions for determining the parameters of a hydrogen permeability nonlinear model is considered. Algorithms are proposed for estimating transport parameters of adsorption, desorption, dissolution, and diffusion depending on the body of experimental information.
Yu. V. Zaika, E. P. Bormatova
openaire   +1 more source

Rigid gas permeable lens identification using refractometry

International Contact Lens Clinic, 1992
Abstract A plentitude of rigid gas permeable lenses have become available to the contact lens practitioner. The materials vary in monomer compounds that produce specific optical polymers, refractive indices, specific gravities, and oxygen permeabilities as well as unique wetting characteristics.
Neil R. Hodur, Janice Jurkus, Gary Gunderson   +2 more
openaire   +1 more source

Permeability Identification of a Stereolithography Specimen Using an Inverse Method

2007
The simulation of a resin flow through a porous medium by FE-models has become a very important aspect for the design of a high-performance RTM produced composite part. The key parameters to perform RTM flow simulations are the permeability values of the fibre reinforcement.
Gerd Morren, Hugo Sol, Bart Verleye, Stepan Lomov   +3 more
openaire   +1 more source

Identification of the Permeability Heterogeneity of Laboratory Cores by Tracer Displacement

IOR 1999 - 10th European Symposium on Improved Oil Recovery, 1999
We propose a novel approach for the identification of the permeability heterogeneity, based on the analysis of the concentration contours in the miscible displacement of a passive tracer. By monitoring the displacement fronts at successive (and closely spaced) time intervals, the permeability heterogeneity can be obtained from the solution of a ...
L. Zhan, Y. C. Yortsos
openaire   +1 more source

Colloidal Carbon Used for Identification of Vascular Permeability

Pharmacology, 2008
P I, Brånemark, R, Ekholm, J, Lindhe
openaire   +2 more sources

Full-field measurements for permeability identification by inverse methods

2006
The simulation of a resin flow through a porous medium by FE-models has become a very important aspect for the design of a high-performance RTM produced composite part. The FE-simulation software needs accurate input data such as reinforcement permeability. The measurement of this material parameter is still not standardized and thus many different set-
Morren, Gerd, Gu, Jun, Sol, Hugo, Verleye, Bart, Lomov, Stepan V.   +4 more
openaire   +1 more source

New Sensor-Based Set-Up for Permeability Identification

2020
Hoes, Kris, Sol, Hugo, Dinescu Comanita, Daniela, Luo, Ywen, Verpoest, Ignaas, Parnas, Richard S.   +5 more
openaire   +2 more sources