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1-8 of 8
Keywords: transformation
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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. 19 (06): 401–410.
Paper Number: SPE-7488-PA
Published: 01 December 1979
... well radius boundary condition longtime approximation Drillstem Testing Van Everdingen flow rate constant-rate case anisotropic reservoir transformation reservoir equation drillstem/well testing constant rate vertical fracture elliptical system elliptical flow Transient Flow...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 19 (06): 423–429.
Paper Number: SPE-7861-PA
Published: 01 December 1979
... in undersaturation, and the phase transformations are influenced markedly by temperature changes. Typical organic polyphosphonate and polyacrylate scale inhibitors markedly reduced the formation rates of both hemihydrate and anhydrite at concentrations as low as 10-7M. Introduction The formation of calcium sulfate...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 16 (06): 327–336.
Paper Number: SPE-5957-PA
Published: 01 December 1976
... a manner that the direction vectors-> -> Uk and Uk + 1 are tangent to the circular arc atits respective end-points. The existence of sucha space arc is quite clear. To compute thecoordinates of the (k + 1) station point, Pk + 1, a rigid motion, three-dimensional transformation, T, will be performed...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 15 (01): 19–38.
Paper Number: SPE-4814-PA
Published: 01 February 1975
... Testing Fluid Dynamics single-phase reservoir boundary estimation differential equation objective function optimal-control problem boundary location gradient method permeability weighting factor necessary condition transformation equation Estimation of the Location of the Boundary...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 10 (04): 349–356.
Paper Number: SPE-2778-PA
Published: 01 December 1970
... transformation method of solution is used, with the inverse transformation being accomplished by the theory of residues and facilitated by the use of a digital computer. The solution curves are mathematically exact at each computed point, and confirm favorable field reports on the use of the sub. Introduction...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 6 (02): 102–114.
Paper Number: SPE-1305-PA
Published: 01 June 1966
... permeability and the introduction of the Laplace transformation serve as theoretical foundations. Engineering concepts are investigated to indicate particular solutions of interest, which are analytically obtained with the aid of the Laplace transform. These are numerically evaluated by computer, and presented...
Journal Articles
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 5 (03): 247–258.
Paper Number: SPE-985-PA
Published: 01 September 1965
... of the analytical and numerical techniques overlap, the exact solutions provide estimates of the errors in the numerical procedures. The advantages of the analytical and numerical methods can be combined. To develop a numerical technique as independent of geometry as possible, the physical space is transformed...