... of coal slotted borehole fracture initiation pressure hydrates/coal bed methane/heavy oil/oil sands/tight gas natural gas National Natural Science Foundation of China 10.13039/501100001809 52074045 The coal seam harbors coalbed methane (CBM), which is considered an eco-friendly...

...Fatih Aktas In this study, a diesel tractor engine is numerically modeled to run entirely on natural gas by installing a natural gas fuel injector on the intake manifold and assembling a spark plug in lieu of a diesel injector. In the numerical study, the methane chemical kinetic mechanism...

...Abdul Khaliq; Bandar A. Almohammadi; Mathkar A. Alharthi; Mohd Asjad Siddiqui; Rajesh Kumar A natural gas-fueled homogeneous charge compression ignition (HCCI) engine is coupled to an exhaust gas operated turbine driven two-phase ejector cycle to generate power and cooling energy, simultaneously...

...Romulo Carvalho; Fernando Moraes We investigate three formulations for computing acoustic velocity of natural gas and derive an equation for the heat capacity ratio, which plays a central role in these formulations. The first formulation is a compilation of fundamental equations available...

... permeability reservoirs were experimentally and theoretically investigated. Core plugs collected from a typical China oilfield were utilized for the experiments. Additionally, methane was used as the injection agent to conduct natural gas HNP/displacement experiments. The results indicated that the use...

... September 12, 2013. Assoc. Editor: Timothy J. Jacobs. 25 07 2012 04 06 2013 Dual fuel pilot-ignited natural gas engines are identified as an efficient and viable alternative to conventional diesel engines. This paper examines cyclic combustion fluctuations in conventional dual fuel...

... 02 2013 28 05 2013 Gas compressibility factor or Z-factor for natural gas system can be determined from Standing-Katz charts using the pseudocritical gas pressure and temperatures. These charts give accurate values for Z-factors. Reservoir simulation softwares need accurate correlations...

.... 21 12 2012 15 04 2013 This paper presents the effect of swirl number on combustion characteristics such as temperature, velocity, gas concentrations in a natural gas diffusion flame. Numerial simulations carried out using the commercial computational fluid dynamics (CFD) code, Fluent...

.... Riva , A. , D’Angelosante , S. , and Trebeschi , C. , 2006 , “ Natural Gas and the Environmental Results of Lifecycle Assessment ,” Energy 0360-5442 , 31 ( 1 ), pp. 138 – 148 . 10.1016/j.energy.2004.04.057 De Wolf , D. , and Smeers , Y. , 2000 , “ The Gas Transmission...

...Elling Sletfjerding; Jon Steinar Gudmundsson Pressure drop experiments on natural gas flow in 150 mm pipes at 80 to 120 bar pressure and high Reynolds number were carried out for pipes smooth to rough surfaces. The roughness was measured with an accurate stylus instrument and analyzed using fractal...