... of Petroleum Engineers chemical flooding methods calculation equilibrium alkaline solution concentration alkalinity silica experiment precipitation quartz sand silicate solution equilibration alkaline flooding silicate enhanced recovery reservoir sand composition quartz dissolution...

.... This work addresses three aspects of estimating the BHP from AWS data: (1) estimation of the superficial gas velocity, (2) development of analytical solutions for a single-step BHP calculation, and (3) comparison and interpretation of the predicted BHP's by use of the three correlations for the field...

... property equation simulation shear rate drilling fluid formulation drilling fluid chemistry filtration filtrate hydraulic fracturing viscosity calculation artificial intelligence fluid loss upstream oil & gas leakoff coefficient reservoir coefficient fracture fluid assumption fluid...

... reservoir simulation calculation equation approximation hungarian hydrocarbon inst flow in porous media fluid dynamics petroleum engineer journal thermodynamic property fluid system compositional model pressure difference A common feature of the models presented previously is that all use...

... potential flow table surface network simulator chevron service co surface facility network drillstem testing trunkline simulator reservoir simulator interfaced requirement calculation application separation and treating reservoir simulation modeling & simulation gas lift target rate gas...

... capacity thermal method reaction computer calculation constraint well flow equation equation injection fraction artificial intelligence elimination steam-assisted gravity drainage enhanced recovery production monitoring waterflooding gaussian elimination production logging fluid dynamics...

..., and tension between the phases. Most calculations are made with the Peng-Robinson EOS and the geometric mixing rule for the influence parameters. Use of other EOS and alternative schemes for choosing the influence parameters is explored. 15 9 1981 14 11 1984 19 8 1983 1 4 1985 1 4...

...A. S. Odeh Scaling factors for the proper application and interpretation of field-determined skin effect and pressure buildup values for use in simulators are derived. Reservoir engineering calculations for the actual well are based on a continuous physical system and the total effective formation...

... equation compressibility injection sand deformation pressure production period upstream oil & gas porosity change sagd calculation enhanced recovery hysteresis multiplication factor permeability numerical simulator porosity correction factor enthalpy petroleum engineer journal...

...W. R. Shu High viscosity is a major constraint in the recovery and transportation of heavy crudes and tar sand bitumens. Viscosity reduction may be achieved by mixing the crude with a light petroleum solvent. This paper presents a generalized correlation for calculating viscosities of such mixtures...

... incorporated in the present model. These include stress-sensitive reservoir properties, proper two-phase calculation of leakoff and cleanup, stress-dependent fracture permeability and temperature- and time-dependent fracturing fluid rheology. The utility and a priori predictive capability of the model...

... the hydrocarbon and the aqueous phases. This paper describes a refined successive substitution (SS) method for calculating multiphase flash equilibrium. The phase behavior procedure proceeds in a stepwise manner, and additional phases are introduced by a special testing scheme based on phase fugacities...

... was tested by comparing calculated values to those measured in experimental retort runs performed at LLNL. There was generally good agreement between the calculated and observed results for oil yield, temperature profiles, and the yields of most gas species. Retorting rates were generally overestimated...

... implicit procedure. With the growth of reservoir simulation technology, the tendency has been to develop simulators that offer implicit or near-fully implicit capabilities. 1 – 5 Implicit calculations are often necessary to maintain stability when one or more of the computed variables (pressure...

... strategic planning and management upstream oil & gas mflop equation perfonnance levesque operation computation rate vector computer reservoir simulation cyber 205 performance indicator calculation cray triangular matrix test problem algorithm sparse triangular factorization sparse...

... 7 2 1983 1 10 1983 1 10 1983 Copyright 1983, Society of Petroleum Engineers calculation viscosity jacobian equation displacement fluid property correlation fraction compositional model composition hydrocarbon phase upstream oil & gas saturation coefficient...

... model, when applied to field conditions, predicts redissolution zones that have not been previously recognized because solution residence times in laboratory columns are too short. Calculations show that precipitate redissolution by the low-pH solutions following alkaline pulses may introduce high...

.... An interruption of the flow would result in lowering of the fluid temperature, with subsequent elevation in viscosity. Further decline in temperature would result in gelling or even waxing of the oil. Perkins and Turner 2 calculated the starting behavior of Prudhoe Bay crude on the basis of laboratory...

...L. X. Nghiem; K. Aziz; Y. K. Li A robust algorithm for flash calculations that uses an equation of state (EOS) is presented. It first uses a special version of the successive substitution (SS) method and switches to Powell's method if poor convergence is observed. Criteria are established...

... displacement through porous media result in different compositions. Purpose . This work sought the mechanism for the observed change so that calculated optimal salinity can be expressed through the appropriate intensive variable rather than overall surfactant concentration. Method . Association of the alcohol...