.... Therefore, the properties defined on a smaller scale are upscaled to a coarser scale. Few prior studies on permeability upscaling paid special attention to the problem of radial flow in the vicinity of a wellbore. This study presents an analytical method to calculate effective permeability of a coarse-grid...

...Jetzabeth Ramírez-S.; Fernando Samaniego-V.; Fernando Rodríguez; Jesus Rivera-R. Summary This paper presents a solution for the inverse problem, or interpretation, of the radial flow of tracers in naturally fractured reservoirs. Our model considers cubic-matrix-block fracture geometry, and by using...

... well pseudoradial flow upstream oil & gas derivative response linear flow formation linear flow flow regime radial flow drillstem/well testing vertical radial flow early linear flow stewart regime pressure transient testing infinite reservoir pressure transient analysis evaluation...

... 1991, Society of Petroleum Engineers september 1991 graph radial flow initial reservoir pressure permeability flow capacity upstream oil & gas negative unit slope halliburton reservoir service closed-chamber test method engineering pressure-transient data reservoir characteristic...

... slanted well radial flow storage wellbore infinite-conductivity wellbore solution reservoir limited-entry well vertical well Many reservoirs are subject to gas-cap or strong bottomwater-drive effects. To reduce gas or water coning, the well is completed only in the oil-bearing stratum...

... type-curve matching, identifies the flow regimes effectively, and gives greater confidence in the results. A new method to correct the pressure buildup when drawdown type curves are used in radial-flow wells is also proposed. Two example applications, one with a long producing time and one with a short...

... are presented to illustrate the analysis technique. 25 6 1986 8 6 1987 1 9 1988 1 9 1988 Copyright 1988, Society of Petroleum Engineers buildup data analysis technique reservoir wellbore storage type curve transmissivity dst 1 radial flow pressure response spe formation...

... condition in some detail. By considering the flux distribution along the perforated interval in a partially penetrated well after radial flow is established, they were able to define an "equivalent average pressure point." This represents the location in the vertical direction at which, after radial flow...

... boundary pressure transient radial flow flow-rate fraction boundary spe formation evaluation drillstem testing formation crossflow fraction flow rate layer property reservoir characterization flow in porous media layer permeability pressure transient analysis reservoir surveillance fluid...

... zone packed-off layer spe formation evaluation flow in porous media radial flow layer 1 vertical interference testing The vertical flow behavior in a producing formation is an important factor in the prediction of well and reservoir performance. The vertical interference test is a method...