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Keywords: variation
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Journal Articles
SPE J. 25 (02): 291–302.
Paper Number: SPE-11495-PA
Published: 01 April 1985
...Noaman El-Khatib A mathematical model is developed for waterfloodingperformance in linear stratified systems for both cases of noncommunicating layers with no crossflow and communicating layers with complete crossflow. The model accounts for variation of porosity and saturation inaddition...
Journal Articles
SPE J. 24 (05): 545–554.
Paper Number: SPE-10291-PA
Published: 01 October 1984
... in an actual flood, the released oil forms a bank ahead of the surfactant slug. SPEJ P. 545^ gas injection method concentration variation upstream oil & gas mixture cmc injection strategy optimal injection strategy adsorbed component slug enhanced recovery chemical flooding methods constant...
Journal Articles
SPE J. 24 (04): 467–472.
Paper Number: SPE-10854-PA
Published: 01 August 1984
... variation casing and cementing buckled rod equilibrium position lubinski helically buckled rod constraint application force-pitch relation postbuckled configuration Helical Postbuckling Configuration of a Weightless Column Under the Action of an Axial Load John B. Cheatham Jr., SPE, Rice U...
Journal Articles
SPE J. 24 (03): 328–332.
Paper Number: SPE-11285-PA
Published: 01 June 1984
.... Necessary conditions for optimality are obtained through application of the calculus of variations and Pontryagin's weak minimum principle. A gradient method is proposed for the computation of optimal injection policies. Introduction In recent years, EOR techniques have received much attention. This has...
Journal Articles
SPE J. 23 (06): 870–878.
Paper Number: SPE-10849-PA
Published: 01 December 1983
...Ian D. Palmer; H.B. Carroll, Jr. Models of three-dimensional (3D) fracture propagation are being developed to study the effect of variations of stress and rock properties on fracture height and bottomhole pressure (BHP). Initially a blanket sand bounded by zones of higher minimum in-situ stress...
Journal Articles
SPE J. 23 (05): 717–726.
Paper Number: SPE-11133-PA
Published: 01 October 1983
... design modeling phase artificial intelligence objective function variation reservoir simulation application decision variable optimal control procedure influence function enhanced recovery procedure psig output variable iteration constraint operational interval upstream oil & gas...
Journal Articles
SPE J. 23 (01): 184–190.
Paper Number: SPE-11334-PA
Published: 01 February 1983
... surface isaacson representation facet upstream oil & gas boundary condition variation procedure equation Steep Wave Forces on Large Offshore Structures Michael de St. Q. Isaacson, U. of British Columbia Abstract A new numerical method for calculating the interaction of steep (nonlinear...
Journal Articles
SPE J. 22 (05): 743–749.
Paper Number: SPE-9815-PA
Published: 01 October 1982
... enhanced recovery hydrophobe phenol concentration pvt measurement microemulsion maximize solubilization three-phase region variation Criteria for Structuring Surfactants To Maximize Solubilization of Oil and Water: Part I-Commercial Nonionics Alain Graciaa, U. de Pau Lester N. Fortney, U...
Journal Articles
SPE J. 22 (04): 514–522.
Paper Number: SPE-9092-PA
Published: 01 August 1982
... drilling fluid chemistry consistency limit lower concentration upstream oil & gas drilling fluid selection and formulation guanidine variation inhibitory action drilling fluid formulation chloride drilling fluid property shrinkage index clay suspension potassium chloride drilling fluids...
Journal Articles
SPE J. 22 (01): 117–131.
Paper Number: SPE-9270-PA
Published: 01 February 1982
... later. SPEJ P. 117^ 1982. Society of Petroleum Engineers upstream oil & gas interpretation resistivity trans correlation well logging artificial intelligence identification cloud symposium thickness electrofacies axis log analysis information log response porosity variation...
Journal Articles
SPE J. 21 (04): 435–443.
Paper Number: SPE-8942-PA
Published: 01 August 1981
.... Theoretical models are applied to analyze some aspects of the dynamics of fracturing near material interfaces. The results of these calculations indicate that variation of material properties across a well-bonded interface can cause dynamic material response resulting from the fracturing, which could enhance...
Journal Articles
SPE J. 21 (01): 51–62.
Paper Number: SPE-8372-PA
Published: 01 February 1981
... & gas multicomponent trajectory distance time diagram composition variation grid tie line fluid dynamics fractional flow concentration chemical flooding methods displacement equation equivelocity curve construction extension composition space two-phase region Theory...
Journal Articles
SPE J. 20 (02): 105–112.
Paper Number: SPE-8020-PA
Published: 01 April 1980
... extension), and perforation, recasing, or bottomhole extension), and (6) variations in baseline chemistry (to distinguish between average operating values and unique well conditions or to specify unusual brine flow patterns).These six points are essential for meaningful comparisons of the brine compositions...
Journal Articles
SPE J. 19 (05): 301–312.
Paper Number: SPE-6734-PA
Published: 01 October 1979
...P.J. Closmann; W.B. Bradley The analysis of underground oil-shale recovery processes requires knowledge of the mechanical properties of oil shale at various temperatures. The tensile strength, compressive strength, and Young's modulus are of special importance. The variation of these properties...
Journal Articles
SPE J. 18 (06): 418–434.
Paper Number: SPE-6771-PA
Published: 01 December 1978
... with fluids ahead and behind or by loss to, or gain from, the rock over which it travels, but otherwise conserving its integrity. Multicomponent theory shows this idea is too naive. Rather, an injection sets off a set of "waves" (composition variations) that advance at different speeds and between which new...
Journal Articles
SPE J. 18 (06): 399–408.
Paper Number: SPE-6309-PA
Published: 01 December 1978
... in presented at the Eighth Annual Offshore Technical Conference, held in Houston, May 3-6, 1976. Abstract Excessive riser-force variation on the upper joint in a riser string can lead to buckling and excessive fatigue. This variation is caused by two components of the riser support system - the riser...
Journal Articles
SPE J. 18 (02): 117–122.
Paper Number: SPE-5892-PA
Published: 01 April 1978
... (developed in the Appendix) includes the following assumed mechanisms and their corresponding mathematical expressions. SPEJ P. 117 1 4 1978 1 4 1978 1978. Society of Petroleum Engineers Upstream Oil & Gas variation boundary condition time necessary flow in porous media...
Journal Articles
SPE J. 18 (01): 33–41.
Paper Number: SPE-6088-PA
Published: 01 February 1978
... of Petroleum Engineers relative fracturability Fracturability experimental result fracture Carthage Limestone hydraulic fracturing variation fluid pressure hydraulic fracture interface propagation hydraulic fracture propagation experiment fracture propagation limestone layered formation...
Journal Articles
SPE J. 18 (01): 27–32.
Paper Number: SPE-6089-PA
Published: 01 February 1978
... Reservoir Characterization stress-intensity factor variation in-situ stress hydraulic fracture reservoir geomechanics containment pay zone loading representation tectonic stress gradient interface propagation stiffness permeability fracture barrier layer Containment of Massive Hydraulic...
Journal Articles
SPE J. 16 (02): 97–109.
Paper Number: SPE-5489-PA
Published: 01 April 1976
... variability coefficient loading strength variation bearing capacity Soil property foundation resistance cohesion correction factor London Clay Probabilistic Investigation of Foundation Design for Offshore Gravity Structures L. M. KRAFT, JR. J.D. MURFF ABSTRACT This paper lays the groundwork...

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