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Keywords: equation
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Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 893–901.
Paper Number: SPE-12253-PA
Published: 01 December 1985
...S. H. Leventhal; M. H. Klein; W. E. Culham This paper presents a set of curvilinear coordinate transformations that lead to no mixed derivative terms in transformed flow equations. The transformations are created by examining the transformed flow equations and by showing that the mixed derivative...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 945–953.
Paper Number: SPE-12116-PA
Published: 01 December 1985
... breakthrough equation 5 10 1983 24 1 1985 20 3 1984 1 12 1985 1 12 1985 Copyright 1985, Society of Petroleum Engineers Interest in measuring relative permeabilities at elevated temperatures began in the 1960's with petroleum industry interest in thermal oil recovery...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 927–934.
Paper Number: SPE-12893-PA
Published: 01 December 1985
...Ø. Glasø This paper presents a generalized correlation for predicting the minimum miscibility pressure (MMP) required for multicontact miscible displacement of reservoir fluids by hydrocarbon, CO2, or N 2 gas. The equations are derived from graphical correlations given by Benham et al. 1 and give...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 909–916.
Paper Number: SPE-12585-PA
Published: 01 December 1985
... that is initially saturated with oil For a homogeneous core, the saturation distribution can be calculated with the well-known Buckley-Leverett 7 equation: (1) x ( S w ) = v t ϕ f w ′ ( S w ) , The pressure drop across the core can be calculated from the following...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 886–892.
Paper Number: SPE-11920-PA
Published: 01 December 1985
... economic models. norp oil enhanced recovery after-income-tax value royalty region 1 wellhead price oil production iort royalty rate quadratic equation determination non-eor project royalty alberta procedure equation waterflooding agreement royalty region 2 before-and after-income-tax...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 804–822.
Paper Number: SPE-12950-PA
Published: 01 December 1985
... equation to estimate the duration of wellbore and near-wellbore effects under spherical flow is also proposed. (4) r D = 1 − r s w r ; r ≧ r s w . The quantity r sw is an equivalent or pseudospherical wellbore radius used to represent the actual cylindrical...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 839–847.
Paper Number: SPE-12520-PA
Published: 01 December 1985
... are described theoretically and illustrated by practical examples. The necessary equations for the analyses are provided for testing oil, gas, and geothermal steam wells. In elongated linear flow systems, the pressure transient behavior associated with linear flow occurs late in the drawdown or buildup test...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 902–908.
Paper Number: SPE-11593-PA
Published: 01 December 1985
... 1985 Copyright 1985, Society of Petroleum Engineers grid line potential difference mobility midgridpoint one-point upstream weighting simulator grid-orientation effect grid orientation effect reservoir simulation upstream direction injection equation modeling & simulation...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (06): 902–908.
Paper Number: SPE-11580-PA
Published: 01 December 1985
... al . correlations that allow us to compute the pressure in one step corresponding to its shut-in time. This analytical approach is very convenient for a practicing engineer because the calculations can be done with a hand-held calculator. The general mass-balance equation 11 , 13...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (05): 729–742.
Paper Number: SPE-11599-PA
Published: 01 October 1985
... hydraulic fracturing reservoir permeability reservoir solution straight line agreement drillstem/well testing laplace transform layered reservoir assumption drillstem testing pressure transient analysis equation jt plot fracture conductivity production monitoring reservoir simulation...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (05): 629–636.
Paper Number: SPE-11900-PA
Published: 01 October 1985
... is based solely on square-root-of-time behavior with a constant spurt loss. Fig. 1 shows that little accuracy is lost by describing the leakoff with a single square-root-of-time equation: (2) V c = V s p + m t , where the dynamic leakoff coefficient, C w = ½ m...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (05): 765–779.
Paper Number: SPE-12725-PA
Published: 01 October 1985
... is used to find the perturbation potential for an oil finger. Certain conditions must be met if the growth of two or more pairs of oppositely directed, contiguous fingers is tb be compatible. If these compatibility conditions are combined with the equations for the perturbation velocities, a system...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (05): 719–728.
Paper Number: SPE-12917-PA
Published: 01 October 1985
... equation traverse configuration reserves evaluation drillstem/well testing radial reservoir pressure liquid flow reservoir surveillance gas flow type curve estimates of resource in place upstream oil & gas flow system cumulative production derivation procedure dimensionless rate...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (04): 491–501.
Paper Number: SPE-11625-PA
Published: 01 August 1985
... 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...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (04): 573–579.
Paper Number: SPE-11719-PA
Published: 01 August 1985
... by several authors, some important aspects of the problem are not treated adequately in the literature. We present an analytical method for computing the well-block factors (constants of the PI) for a well located anywhere in a square or rectangular block (aspect ratio between ½ and 2). Equations for well...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (04): 565–572.
Paper Number: SPE-12566-PA
Published: 01 August 1985
...) u i = ∑ s k r s ρ s χ i s λ μ s . The equation of change for component i then becomes (4) ∂ ϕ a i ∂ t + ∇ ⋅ u i u → − q i = 0. The scaling parameter λ has been introduced into the equation without...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (04): 535–542.
Paper Number: SPE-11877-PA
Published: 01 August 1985
... petroleum engineer journal equation orthomin acceleration solution algorithm jacobian system Numerical simulation of oil reservoirs requires the solution of coupled sets of highly nonlinear partial differential equations. These equations represent the conservation of oil, gas, water, and energy...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (04): 543–553.
Paper Number: SPE-10515-PA
Published: 01 August 1985
... saturation) the component masses/moles are treated explicitly. A "volume balance" equation is used to obtain the pressure equation. A weighted sum of the conservation equations is used to eliminate the nonlinear saturation/concentration terms from the accumulation term of the pressure equation. The partial...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (03): 363–370.
Paper Number: SPE-10978-PA
Published: 01 June 1985
... convergence cauchy problem galerkin scheme uniqueness constraint equation reservoir simulation coefficient upstream oil & gas collocation upstream collocation fluid dynamics saturation buckley-leverett problem gradient converge flow in porous media numerical solution petroleum engineer...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 25 (03): 407–418.
Paper Number: SPE-11965-PA
Published: 01 June 1985
... interference test drillstem testing test data permeability rate pulse analytical model interference vertical permeability tight zone perforation test analysis type-curve match numerical model upstream oil & gas fluid dynamics equation flow in porous media petroleum engineer journal...
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