... several injection/productions schemes (e.g., switching injection from the MPZ to the ROZ, commingled production). For each scheme, various WAG ratios (i.e., reservoir volume ratio between injected water and CO 2 ) were tested to find the maximum oil production and maximum CO 2 storage. We assessed...

... monitoring miscible method chemical flooding methods conformance improvement production control reservoir surveillance reservoir characterization enhanced recovery reservoir simulation gas injection method structural geology upstream oil & gas fractional flow theory wag injection wag ratio...

... of the waterflooding and CO 2 WAG proess (i.e., durations of the primary production and waterflooding) are also included in the optimization process as well as the producer's bottomhole pressures and injection rates, in addition to the water and gas injection rates for the WAG process, WAG ratio, and well bottomhole...

... targets. Typical parameters usually provided by reservoir simulation, such as total recovery, WAG ratios, slug sizes, etc. were determined using analog data and analytical techniques due to the lack of subsurface data and detailed performance information. The design techniques presented in this paper...

... Abstract The effect of relative permeability hysteresis on both CO 2 storage and oil recovery has been studied using a compositional simulator. The effects of process parameters such as water-alternating-gas (WAG) ratio and CO 2 slug size, and reservoir heterogeneity characteristics...

... into further expansions. miscible method incremental benefit Upstream Oil & Gas WAG ratio maturity optimization Modeling & Simulation injectant miscible flood mwag project sand pattern gas injection flood lean gas injection enhanced recovery incremental oil sale expansion society...

... The main result of this paper is a series of plots that show how the number of pore volumes injected for complete oil recovery and the mobility contrast across the solvent front vary as a function of the WAG ratio. These results suggest that, while the prediction of the optimum WAG ratio does...

... simulation. Type pattern simulations are used to show that, along with WAG ratio and solvent slugsize, the timing of the start of gas injection is a key optimization variable. The results show that the most economic recovery occurs if very low WAG ratios are used and gas injection starts when the waterflood...

... Abstract Successfully operating a CO2 flood requires the ability to make informed decisions regarding WAG ratio, half-cycle-slug size, ultimate-CO2-slug size, and conformance improvement opportunities (conformance refers to vertical and areal sweep efficiency). The decision quality...

... adds significant new insights and conclusions about the feasibility of using CO 2 with horizontal wells. producer upstream oil & gas reservoir slug size horizontal injector simulation carbon dioxide flooding vert wag ratio 1 mechanistic study stochastic description fluid dynamics...

... study permeability wag ratio spe 24185 porosity robert unit scenario miscible flood simulation study texas upstream oil & gas recovery forecast oil recovery pvt measurement wasson field enhanced recovery model area hcpv saturation flow unit transitional environment yoakum county...

... rules of thumb. The use of a simulator permits a more rigorous analysis to optimize WAG cycle parameters such as bank size, cycle time and WAG ratio. Results indicate enhanced performance from high injection rates at low WAG ratios in the early stages of the flood followed by an increased WAG ratio...

... to effectively manage a project of this magnitude. pbmgp miscible gas distribution philosophy speidoe 241 59 guideline approach production rate injection rate expansion society of petroleum engineers alaska miscible method wag ratio guideline spe 24159 enhanced recovery efficiency new...

... engineers enhanced recovery phase diagram reservoir permeability viscosity simulation breakthrough diffusion coefficient stability upstream oil & gas flow in porous media heterogeneity parameter model variation mobility ratio miscible displacement wag ratio united states government...

... and reduced displacement efficiency associated with WAG injection. One dimensional calculations show an insensitivity of displacement efficiency to water injection over a limited range of low WAG ratios. When operating in such a manner, changing the amount of injected water has no effect on the basic solvent...

... wag ratio mixture zone saturation flow in porous media mobility water zone water saturation gas zone saturation recovery efficiency mixture zone water zone saturation enhanced recovery viscous-gravity ratio reservoir simulation waterflooding gas injection method segregation fluid...