... of Petroleum Engineers upstream oil & gas uranium ore ore metals & mining leachate carbonaceous material batch test recovery efficiency sodium hypochlorite concentration naoci concentration crownpoint ore naoci uranium oxidant leach test rate constant naocl new mexico ore...

... with this model. Example calculations show that miscible-like recovery efficiencies are possible with immiscible gas injection into high-permeability dipping reservoirs with light oil. A procedure based on the analytical model has been developed to simulate immiscible gas injection into highly stratified...

...James C. Stringer; L. Kent Thomas; Ray G. Pierson The efficiency of D4 Gaussian elimination on a vector computer, the Cray-1/S, is examined. The algorithm used in this work is employed routinely in Phillips Petroleum Co. reservoir simulation models. Comparisons of scalar and vector Cray-1/S times...

... of Petroleum Engineers experiment residual crude oil co 2 reservoir flow in porous media injection upstream oil & gas saturation permeability efficiency nitrogen enhanced recovery displacement fluid dynamics co2 southern california gravity stabilized system residual oil oil recovery...

... upstream oil & gas sterile brine brine solution microbial method bacteria nutrient permeability reduction permeability viable cell efficiency microbial growth enhanced recovery experiment oil recovery sandstone cell injection pseudomona strain injection concentration sandstone core...

... size efficiency heating value production monitoring oil combustion flow rate artificial intelligence particle size distribution laboratory variation retorting LLNL has been developing technology applicable to the MIS process of extracting oil from oil shale. 1 , 2 Our program has...

... instability, both the residual oil and solvent begin to be produced much earlier. The recovery of the residual oil parallels the recovery of the mobile water just as in the case of the stable displacement. The efficiency of residual-oil recovery (volumes of oil produced per volume of injected solvent) is much...

...C. Gruesbeck; R. E. Collins This paper describes a new procedure for determining particle-transport efficiency through perforations. Transport efficiency is the mass fraction of particles that are transported through the perforations relative to the total mass of particles injected. Our conclusions...

... that the oxidant efficiency and the produced uranium solution concentrations are sensitive to the presence of other minerals competing with uranium for oxidant. If the Damkohler number for competing minerals, which measures the speed of the reaction, exceeds that for uranium, the competing mineral will have...

... Coalescence rate constant bubble diameter production control production logging removal rate Efficiency experiment oil drop flotation air bubble flowrate bubble drop interaction drop size oil concentration interaction bubble size separation and treating Strickland 6 conducted many...

...W. T. Strickland, Jr. Laboratory studies were conducted to determine the factors governing flotation-cell performance. It was learned that oil removal is increased by increasing collision and attachment efficiencies and gas/liquid contact time. Collision efficiency is increased by increasing oil...

... of obtaining meaningful data. New findings on the influence of such fluids on performance of clay stabilizers are reported here. Special Apparatus For this study, flow and water sensitivity tests were performed to measure clay stabilizer efficiency. performed to measure clay stabilizer efficiency. These tests...

...Surendra P. Gupta; Scott P. Trushenski Key variables that govern oil displacement in a micellar flood are capillary number (velocity x viscosity/interfacial tension) and chemical loss. At high capillary numbers, oil displacement is very efficient if various phases propagate at the same velocity...

...F.A.L. Dullien; I.F. MacDonald Microscopic displacement efficiency of oil recovery has been receiving increased attention. We propose a new correlating parameter for displacement efficiency, the "tertiary oil recovery number," N SAA, and compare it with the "capillary number," N ca, recommended...

..., and can also be a factor in secondary operations where alternate water and solvent injection is used to improve the low sweep efficiency of miscible flooding with hydrocarbon and acid gases. Several publications have reported a reduction in displacement efficiency when mobile water is present...

... mobilities. Thus it is able to represent the carbonated water displacement process. Oil displacement efficiencies obtained by this method should be supplemented by corrections for areal and vertical sweep efficiency, if predictions of oil recovery under field conditions are desired. Introduction...

...P.E. Baker Experimental studies have been carried out to determine the effects oil injection pressure and rate on formation heating by steam flooding. Heat losses, vertical sweep efficiency, and steam zone volume were determined for steam displacing water at different rates and pressures. A radial...

... on recovery processes. Introduction Waterflooding is by far the most common secondary recovery technique. Several processes (polymer injection, surfactant injection, hot water injection, etc.) attempt to improve sweep efficiency by affecting some of the factors involved in the displacement process...

.... This procedure of compressing a rectangular pattern to achieve a breakthrough at 0. 718 PV in a square, therefore, does not seem to us to be a valid procedure. COMPARISONS OF CALCULATED SWEEP EFFICIENCIES WITH PRIOR EXPERIMENTAL WORK The large dispersion zone in the Simon-Kelsey network prevents the occurrence...

... injected for the special cases of a linear system (length/width = 3/1) and five-spots. 1 8 1972 1 8 1972 1 8 1972 1 8 1972 1972. Society of Petroleum Engineers fluid modeling Upstream Oil & Gas PVI mobility ratio equation of state displacement Efficiency network...