... asphaltene inhibitor flow assurance nanoparticle inhibitor oilfield chemistry scale remediation paraffin remediation upstream oil & gas production chemistry artificial intelligence wax remediation msn concentration desorption release asphaltene inhibitor system formulation petroleum...

... (IWS) from 2.52 to 0.32 M causes enhanced Ca 2+ desorption rendering rock surface towards more water wet. Consequently, oil relative permeability (k ro ) increases with >55% reduction in water fractional flow (f w ) at water saturation of 0.5 from the initial oil-wet condition. Further reducing IWS...

... exchange reaction desorption sw-gly5 wettability alteration concentration carboxylic acid seawater injection reaction Introduction Carbonate reservoirs contain over 50% of the world's oil reserves (Akbar et al. 2000). However, the recovery factor after waterflooding is low (around 26...

..., and (5) hydraulic fracture porosity" ( Lopez Jimenez and Aguilera, 2019 ). Furthermore, the model has capabilities to handle dissolved gas in the solid part of the organic matter, adsorption/desorption from the organic walls, and stress-dependent properties of natural and hydraulic fractures...

... porosity, and (5) hydraulic fracture porosity. The numerical model is developed with capabilities to handle dissolved gas in the solid part of the organic matter, adsorption/desorption from the organic pore walls, viscous and non- Darcy flow mechanisms (slip flow and Knudsen diffusion), and stress...

.... 22 , 23 , and 24 , the corrected bulk porosity, connate water saturation, and free gas saturation could be achieved and input the simulator before simulation. Time-varying porosity formulation for adsorbed layer, gas desorption, and geomechanics Generally, the porosity changes due to stress...

... is critical. In this paper, we develop a coupled model system for shale gas reservoir simulation. The equations considering the impact of gas adsorption/desorption upon effective porosity and permeability are derived and incorporated into the simulator. In particular, both Langmuir and BET (Brunauer, Emmett...

..., and sorption parameters to be measured more accurately and faster than commonly used techniques. The impact of the adsorption/desorption by different gases on these petrophysical properties will be also investigated. The laboratory set-up, referred to as Precision Petrophysical Analysis Laboratory (PPAL) here...

... of unconventional gas wells. New mathematical formula has been proposed taking into account effect of gas desorption from organic matter of the shale. Analytical models provide more reliable forecasting capability. The logistic curve was successfully applied to conventional and unconventional reservoirs. Once...

... An equation to describe mass balance of gas flow in shale gas reservoirs by considering the gas desorption effect is given below ( Patzek et al., 2013 ; Yu et al., 2014a ): (8) ∂ [ ρ g S g ϕ + ( 1 − ϕ ) ρ a ] ∂ t = − [ ∂ ( ρ g u g...

...Conclusions We introduced a new 1D radial reservoir model to quantify production of gas-bearing shales. The numerical algorithm concomitantly considers slip flow, Knudsen diffusion, Langmuir desorption, and gas diffusion in kerogen. Slip flow and Knudsen diffusion increase the apparent...

... performance data. We constructed a fit-for-purpose numerical simulator which accounts for a variety of production features pertinent to these systems — specifically: ultra-tight matrix permeability, hydraulically fractured horizontal wells, multiple porosity and permeability fields, and desorption...

... states government variation desorption two-phase flow model propagate saturation petroleum engineer enlargement Introduction Atmospheric concentrations of CO 2 have increased significantly from pre-industrial levels of 280 ppm to current concentrations of 385 ppm 1 . This increase...

... was also used as the flush fluid in the desorption experiment. The core specimen was Berea sandstone of 3.81 cm in diameter and 6.2 cm in length. Its porosity is 21.05%, and permeability is 224 mD. In this study, 8 series of circulation experiments for adsorption and 7 series of flow-through...

... Abstract This paper reports adsorption/desorption kinetics and equilibrium onto Berea sandstone for a surfactant used as a CO2-water foaming agent. Also, foam stability of the surfactant is compared before and after adsorption/desortion has occurred. Results show that this surfactant's...

... to adsorption on reservoir rock often exclude this potentially beneficial option for many well operators. 2 Abstract This paper presents the adsorption/desorption results for two surfactant systems and for a mixture of the two onto five minerals and two porous media. The systems are composed of Chaser...

... experiments show that temperature has an important effect on desorption, such that hysteresis becomes more pronounced as the temperature increases. Using a pore network model to represent porous media we investigated adsorption-desorption processes over the range of the relative pressures, highlighting...

... that oversimplifying or neglecting desorption of methane from the coalbed methane reservoir matrix as is done in the analytical methods can lead to inaccurate estimates of permeability. Thus, we concluded that the only generally trustworthy method of analysis of transient and longer-term production data is to use...

... become increasingly aware of environmental liabilities (past, present, and future) associated with E & P operations, they have sought alternatives to their present oily waste management practices. This paper discusses two innovative treatment alternatives for E&P oily wastes, thermal desorption...

... production include two-phase flow, gas desorption, and fracture permeability. Current operational practice, which relies on gas-assist to lift formation water and reduce bottom-hole pressure, may not optimize well productivity, currently averaging about 85 Mcfd in the basin. The reservoir processes...