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Fracture gradient prediction: an overview and an improved method
Keywords Fracture gradient prediction Leak-off test Breakdown pressure Mud loss Fracture gradient in salt
2018/4/2
Abstract The fracture gradient is a critical parameter for drilling mud weight design in the energy industry. A new method in fracture gradient prediction is proposed based on analyzing worldwide leak...
Conversion of Methane by Dielectric-barrier Discharge Plasma Method — Comparison with Microwave Plasma Method —
Dielectric-barrier discharge plasma Microwave plasma Methane conversion Homologation Dehydrogenation
2010/9/8
Methane conversion by the dielectric-barrier discharge plasma method (DBD) was compared with our previous findings for the microwave plasma method (MW). The power (Pw), initial pressure (P0) and flow ...
Novel Method for Detection of Hydrogen Gas Leak Sites Using Pt/WO3 Imaging Devices
Platinum catalyst Tungsten trioxide Gasochromic reaction Hydrogen leak detector Gas leak visualization
2010/9/8
A detection method of hydrogen leakage locations has been proposed and characterized. Platinum-supported tungsten trioxide (Pt/WO3) was utilized as a sensing material whose color changes from semi-tra...
Fischer-Tropsch Reaction over Bimodal Porous Ru/SiO2 Catalysts Prepared by Alkoxide Method
Alkoxide method Bimodal pore structure Fischer-Tropsch reaction Particle size Ruthenium catalyst
2010/9/8
Bimodal porous Ru/SiO2 catalysts for the Fischer-Tropsch reaction were prepared by modifying the surface of macro-porous silica with Ru–SiO2 prepared by the alkoxide method. The Ru particle size estim...
New Method for Ethanol Synthesis from Dimethyl Ether and Syngas via Two-stage Reaction
Carbonylation Hydrogenation Ethanol synthesis Zeolite catalyst Two-stage reaction Dimethyl ether
2010/9/8
A new method for ethanol synthesis from dimethyl ether (DME) and syngas via a two-stage reaction system was established successfully. In the first stage reaction, H-mordenite zeolite catalyst was used...
Application of Constrained Interpolation Profile (CIP) Method for Numerical Simulation of Two-phase Flow in Porous Media
CIP method Two-phase flow Porous media Numerical diffusion Shock front
2010/9/8
Numerical simulation technology for two-phase flow in porous media was developed using the Constrained Interpolation Profile (CIP) method. Both the finite difference method and streamline method combi...
Combined Method of Ammonia IRMS-TPD Experiment and DFT Calculation to Characterize Zeolite Acidity
Zeolite Acidity Temperature programmed desorption Infrared spectroscopy Density functional theory Catalytic cracking
2010/9/8
Our recently developed potential characterization method for studying the zeolite acidity is reviewed. In this method, ammonia TPD is a principle technique and first the principle of the method was ex...
Comparison of Genetic Programing, Radial Basis Function Network and Polynomial Equation Used for Response Surface Method for Catalyst Optimization
Genetic programing Cobalt-magnesia catalyst Methane dry reforming
2009/8/4
Preparation conditions of Co-MgO catalyst for methane dry reforming were optimized to maximize the CO yield. Response surface method, composed of design of experiment and regression method, was appli...
Effects of Pore Size of Ru-Al2O3 Catalysts Prepared by Alkoxide Method on Fischer-Tropsch Reaction
Alkoxide method Fischer-Tropsch reaction Particle size Pore size
2009/8/4
10 wt%Ru-Al2O3 catalysts with uniform pore sizes in the range of 3-7 nm were prepared by the alkoxide method by changing the added amount of H2O highly diluted with butanol at the gelation stage of s...
On-line Inspection of Offshore Oil Pipeline Thickness Using Ultrasonic Method
Pipeline inspection Ultrasonic inspection Data acquisition Data storage
2009/8/4
Inspection for flaws is very important in offshore oil pipelines for avoiding disasters. An ultrasonic inspection device for offshore oil pipelines was developed. High speed data acquisition and stor...
Design of Solid Catalysts by Sol-gel Method Using Organic Polydentate Ligands and Their Catalytic Performance
Solid catalyst Catalyst design Sol-gel method Thermostable metal oxide
2009/8/4
Advantages and effectiveness of using an organic polydentate ligand in the sol-gel process were discussed. The sol-gel method using the ligand was presented herein for preparation of metal oxides inc...
Effects of Ru Precursors on Activity of Ru-SiO2 Catalysts Prepared by Alkoxide Method in Fischer-Tropsch Synthesis
Alkoxide method Fisher-Tropsch reaction Ruthenium precursor
2009/8/4
Ru-SiO2 catalysts with uniform structure were prepared by the alkoxide method using various Ru precursors, and used to catalyze the Fischer-Tropsch (F-T) synthesis in the slurry phase under the react...
New Low Vapor Pressure Estimation Method for Polar Compounds
Vapor pressure estimation Polynomial equation Genetic algorithm
2009/7/28
Vapor pressure estimation for polar compounds is very important in environmental chemistry. Most vapor pressure estimation equations are based on the Clausius-Clapeyron equation. Such equations are ex...
Effects of Pore Size of Ru-SiO2 Catalysts Prepared by Alkoxide Method on Fischer-Tropsch Reaction
Alkoxide method Fischer-Tropsch reaction Particle size
2009/7/28
Uniform pore sizes of 10 wt%Ru-SiO2 catalysts prepared by the alkoxide method were varied in the range of 4-8 nm, by adding formamide (FA) at the sol-gel preparation stage. The prepared catalysts were...
New Test Method for Moisture Permeation in Bituminous Mixtures
Bituminous mixture Moisture damage Blistering Moisture permeation
2009/7/28
Water-related damage to bituminous pavement is considered to result from penetration of liquid water from the surface and/or subsurface. However, surface courses made of bituminous material such as r...