... journal drillstem/well testing drillstem testing acoustic travel time This paper discusses borehole- and perforation-stability problems as encountered in friable sandstone formations that have in common free fluid flow between a reservoir and an underground opening. Such a condition prevails (1...

... 1984 9 1 1985 1 12 1985 1 12 1985 Copyright 1985, Society of Petroleum Engineers skin effect flow rate type curve inner boundary condition storage pressure drop boundary condition sandface flow rate phase redistribution drillstem testing approximation coefficient...

... & gas drillstem testing type curve ehlig-economide permeability geometry observation well interference test miller where η=k/ϕμct , the formation diffusivity. The only difference between Eq. 1 and the solution by Miller is the factor (q/2), which allows for flow from both sides...

... prediction gradient bhp estimation gas-void fraction podio artificial intelligence liquid column drillstem testing upstream oil & gas reservoir surveillance production control gilbert correlation artificial lift system drillstem/well testing godbey-dimon 1 pressure prediction calculation...

... Copyright 1985, Society of Petroleum Engineers type-curve match production control compressibility linear flow drillstem testing average reservoir pressure dimensionless time production monitoring production rate viscosity equation traverse configuration reserves evaluation drillstem...

... 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...

... corner block numerical reservoir simulation fluid dynamics geometric factor upstream oil & gas simplify well block well pressure expression radial flow assumption flow in porous media drillstem/well testing drillstem testing reservoir boundary equation chappelear petroleum engineer...

... shut-in time slurry fluid loss hydraulic fracturing drillstem/well testing fracture stimulation stress test drillstem testing well 43 pressure decline reservoir characterization fracturing fluid fracturing materials slurry volume proppant reservoir geomechanics well 44 petroleum...

... drillstem/well testing type curve wellbore storage assumption tight-zone vertical permeability reservoir pressure response vertical interference test drillstem testing test data permeability rate pulse analytical model interference vertical permeability tight zone perforation test analysis...

... drillstem testing crawford spe annual technical conference root model transition period actual slope uniformly pressure transient analysis well test data complex reservoir pressure drawdown pressure transient testing petroleum engineer journal dimensionless time Idealistic models...

... of constant thickness. A longer test, revealing the tendency to a constant value of pressure at infinite time, might lead to the mistaken inference of a constant-pressure boundary in the system. boundary geometry drillstem testing straight line polygon correlation graph pinchout boundary adjacent...

... 28 9 1983 1 6 1985 1 6 1985 Copyright 1985, Society of Petroleum Engineers boundary flow regime 3 drillstem testing buildup data dimensionless time upstream oil & gas semilog straight line flow regime 4 straight line mbh function reservoir flow regime 2...

... dimensionless storage coefficients, and replacing V by qBt gives fenske laplace transform bessel function flow rate fenske approximation drillstem testing fenske conservation method drillstem/well testing pressure drop agarwal approximation equation upstream oil & gas pressure...

... reservoir simulator gas lift upstream oil & gas drillstem/well testing wellhead pressure drilling network simulator well potential flow table surface network simulator chevron service co surface facility network drillstem testing trunkline simulator reservoir simulator interfaced...

... permeability k ¯ s , then pressure gradients in the z direction are negligible. In this context, we note that Assumption 1 will not be applicable to commingled systems (see Ref. 7 ). well response interlayer crossflow drillstem/well testing drillstem testing skin region anisotropy...

... control reservoir characterization composite system pressure transient analysis type curve drillstem testing pressure response reservoir surveillance pressure transient testing analytical study enhanced recovery petroleum engineer journal flow in porous media fluid dynamics production...

... partial pressure permeability curve upstream oil & gas production enthalpy simulation geothermal reservoir reservoir simulation petroleum engineer journal drillstem testing ohaaki reservoir geothermal field renewable energy drillstem/well testing geothermal reservoir Many...

... Copyright 1985, Society of Petroleum Engineers drainage shape drillstem testing hexagon well 1 summation pattern image well constant pressure drillstem/well testing producer reservoir injector upstream oil & gas well 2 relative well location rectangle actual well well location...

... permeability open interval drillstem/well testing skin effect buildup pressure permeability simulator proper interpretation calculation skin factor pressure drop interpretation equation drainage area drillstem testing well inflow equation wellbore inflow equation upstream oil & gas shut...

... flow in the matrix with the Warren-Root model, which assumes pseudosteady-state fluid flow in the matrix. fractured reservoir line source solution upstream oil & gas pressure response thickness semilog straight line straight line drillstem testing procedure analyze data matrix...