scholarly journals Multiscale Direct Envelope Inversion: Algorithm and Methodology for Application to the Salt Structure Inversion

2019 ◽  
Vol 6 (1) ◽  
pp. 174-190 ◽  
Author(s):  
G. X. Chen ◽  
R. S. Wu ◽  
S. C. Chen
Keyword(s):  
Inversion Algorithm ◽  
Salt Structure ◽  
Structure Inversion

On the Faceting of Polar Ceramic Surfaces: Microscopy and Holography Studies of MGO(111) Surfaces

1996 ◽  
Vol 54 ◽  
pp. 366-367
Author(s):  
M. Gajdardziska-Josifovska ◽  
B. G. Frost ◽  
E. Völkl ◽  
L. F. Allard
Keyword(s):  
Electron Microscopy ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
Electron Holography ◽  
Flat Surfaces ◽  
Transmission Electron ◽  
Excess Surface ◽  
Polar Surfaces ◽  
Salt Structure ◽  
Crystallographic Planes

Polar surfaces are those crystallographic faces of ionically bonded solids which, when bulk terminated, have excess surface charge and a non-zero dipole moment perpendicular to the surface. In the case of crystals with a rock salt structure, {111} faces are the exemplary polar surfaces. It is commonly believed that such polar surfaces facet into neutral crystallographic planes to minimize their surface energy. This assumption is based on the seminal work of Henrich which has shown faceting of the MgO(111) surface into {100} planes giving rise to three sided pyramids that have been observed by scanning electron microscopy. These surfaces had been prepared by mechanical polishing and phosphoric acid etching, followed by Ar+ sputtering and 1400 K annealing in ultra-high vacuum (UHV). More recent reflection electron microscopy studies of MgO(111) surfaces, annealed in the presence of oxygen at higher temperatures, have revealed relatively flat surfaces stabilized by an oxygen rich reconstruction. In this work we employ a combination of optical microscopy, transmission electron microscopy, and electron holography to further study the issue of surface faceting.

Twin Boundary in Bechgaard Salt: Structure and Unusual Dynamics

1996 ◽  
Vol 6 (12) ◽  
pp. 1567-1574 ◽  
Author(s):  
M. Mukoujima ◽  
K. Kawabata ◽  
T. Sambongi
Keyword(s):  
Twin Boundary ◽  
Salt Structure ◽  
Bechgaard Salt

REDUCING FRACTURE PREDICTION UNCERTAINTY BASED ON TIME-LAPSE SEISMIC (4D) AND DETERMINISTIC INVERSION ALGORITHM

2019 ◽  
Vol 9 (2) ◽  
pp. 187-204
Author(s):  
Liming Zhang ◽  
Chenyu Cui ◽  
Kai Zhang ◽  
Yi Wang ◽  
Zhixue Sun ◽  
...  
Keyword(s):  
Time Lapse ◽  
Fracture Prediction ◽  
Inversion Algorithm ◽  
Prediction Uncertainty

Application of Isochronous Healing Curves in Predicting Damage Evolution in a Salt Structure

2000 ◽  
Vol 9 (2) ◽  
pp. 130-153 ◽  
Author(s):  
K. S. CHAN ◽  
S. R. BODNER ◽  
D. E. MUNSON
Keyword(s):  
Damage Evolution ◽  
Salt Structure

scholarly journals Production behavior evaluation on multilayer commingled stress-sensitive carbonate gas reservoir

2020 ◽  
pp. 014459872096415
Author(s):  
Jianlin Guo ◽  
Fankun Meng ◽  
Ailin Jia ◽  
Shuo Dong ◽  
Haijun Yan ◽  
...  
Keyword(s):  
Early Stage ◽  
Sedimentary Environment ◽  
Production Performance ◽  
Total Production ◽  
Inversion Algorithm ◽  
Gas Reservoir ◽  
Hole Pressure ◽  
Bottom Hole Pressure ◽  
Bottom Hole ◽  
Production Behavior

Influenced by the complex sedimentary environment, a well always penetrates multiple layers with different properties, which leads to the difficulty of analyzing the production behavior for each layer. Therefore, in this paper, a semi-analytical model to evaluate the production performance of each layer in a stress-sensitive multilayer carbonated gas reservoir is proposed. The flow of fluids in layers composed of matrix, fractures, and vugs can be described by triple-porosity/single permeability model, and the other layers could be characterized by single porosity media. The stress-sensitive exponents for different layers are determined by laboratory experiments and curve fitting, which are considered in pseudo-pressure and pseudo-time factor. Laplace transformation, Duhamel convolution, Stehfest inversion algorithm are used to solve the proposed model. Through the comparison with the classical solution, and the matching with real bottom-hole pressure data, the accuracy of the presented model is verified. A synthetic case which has two layers, where the first one is tight and the second one is full of fractures and vugs, is utilized to study the effects of stress-sensitive exponents, skin factors, formation radius and permeability for these two layers on production performance. The results demonstrate that the initial well production is mainly derived from high permeable layer, which causes that with the rise of formation permeability and radius, and the decrease of stress-sensitive exponents and skin factors, in the early stage, the bottom-hole pressure and the second layer production rate will increase. While the first layer contributes a lot to the total production in the later period, the well bottom-hole pressure is more influenced by the variation of formation and well condition parameters at the later stage. Compared with the second layer, the scales of formation permeability and skin factor for first layer have significant impacts on production behaviors.

scholarly journals An adaptive reversible jump MCMC inversion algorithm for airborne time-domain electromagnetic data

2021 ◽  
Vol 660 (1) ◽  
pp. 012124
Author(s):  
Xiaodong Yu ◽  
Xuben Wang ◽  
Congde Lu ◽  
Yuhang Wang
Keyword(s):  
Time Domain ◽  
Reversible Jump ◽  
Inversion Algorithm ◽  
Reversible Jump Mcmc ◽  
Electromagnetic Data ◽  
Time Domain Electromagnetic

scholarly journals The influence of bile salt structure on self-association in aqueous solutions.

1983 ◽  
Vol 258 (10) ◽  
pp. 6362-6370 ◽  
Author(s):  
A Roda ◽  
A F Hofmann ◽  
K J Mysels
Keyword(s):  
Aqueous Solutions ◽  
Bile Salt ◽  
Salt Structure ◽  
Self Association

Li0.625Al0.125H0.25Cl0.75O0.25 Superionic Conductor with Disordered Rock-Salt Structure

2021 ◽  
Author(s):  
Qian Zhang ◽  
William Arnold ◽  
Zachary D. Hood ◽  
Yang Li ◽  
Rachel DeWees ◽  
...  
Keyword(s):  
Rock Salt ◽  
Superionic Conductor ◽  
Rock Salt Structure ◽  
Salt Structure
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