... gas viscosity in secondary fracture and hydraulic fracture. And ϕ mi , ϕ fi and ϕ F are the corresponding porosity of matrix, secondary fracture in i th region and hydraulic fracture. Here, we also proposed a dimensionless parameter, desorption coefficient, to describe the effects of gas...

... concentrations and types of nanoparticles. Nanoparticles transport experiments with the same nanofluids also were performed to study nanoparticles adsorption behavior. Effluent nanoparticles concentration was measured to evaluate nanoparticles adsorption and desorption inside core. Pressure drop was recorded...

... Abstract The production process of coalbed methane (CBM) includes desorption, diffusion and seepage, and the production is controlled by these three processes together. The permeability of coal reservoir is generally low. To increase the coalbed methane production, well stimulation needs...

... Abstract Production of methane from coal seems is achieved by pumping out large quantities of water leading to cleat pressure drawdown and hence methane desorption from the matrix, its diffusion through the micropores to the cleat system and out of the wellbore. A coupled numerical model...

... and fracture half-length do not exactly match the input data to simulation. In this paper, a methodology to properly analyze the production data from a fractured well in tight/shale gas reservoir producing under a constant flowing pressure in the presence of desorption and slippage is presented. This method...

... Figure 3 Underground drilling setup to collect cuttings with air flush drilling. Figure 4 An example of gas content measurement from air drilled cuttings desorption. Figure 2 Example of lost gas determination plot (Q1). Figure 1 Example of desorbed gas measurement...

... Characterization coal seam gas volumetric strain coal deformation desorption effective stress ch 4 coal matrix permeability co 2 gas flow society of petroleum engineers Modeling & Simulation Upstream Oil & Gas coalbed methane recovery diffusion equation deformation Introduction...

... be considered to be primarily controlled by the prevailing effective horizontal stresses that act across the cleats. Coal matrix has been shown to shrink on desorption of gas and to expand again on readsorption. During primary methane production, two distict phenomena are known to be associated...

... Proposal This paper presents the results of a study of processes and technologies for the thermal desorption of oil from oil-based drilling fluids cuttings for both onshore and offshore applications. A field investigation of available technologies designed to separate oil from oil-based...

... coefficient coal bed methane desorption component isotherm equilibrium composition kpa composition amount adsorbed gas mixture adsorbed phase adsorption data activity coefficient pvt measurement isotherm coalbed methane adsorbate activity coefficient phase composition adsorption organic-rich...