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Keywords: straight line
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Proceedings Papers

Paper presented at the SPE Rocky Mountain Petroleum Technology Conference, April 14–16, 2009
Paper Number: SPE-122768-MS
.../well testing flow rate diffusivity analytical solution boundary condition nonlinearity equation straight line permeability pressure-dependent permeability reservoir differential equation Abstract The transient pressure response in stress-sensitive formations is derived by solving...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional/Low-Permeability Reservoirs Symposium and Exhibition, March 12–15, 2000
Paper Number: SPE-60291-MS
... reservoirs. drillstem/well testing straight line injection test closure drillstem testing extension mayerhofer method pressure transient analysis specialized mayerhofer plot permeability pressure transient testing diagnostic fracture injection test flow in porous media pressure dependent...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 15–18, 1999
Paper Number: SPE-55605-MS
... This paper was prepared for presentation at the 1999 SPE Rocky Mountain Regional Meeting held in Gillette, Wyoming, 15–18 May 1999. water production reservoir simulation water saturation straight line calculation coal well gas reservoir mass balance equation king compressibility...
Proceedings Papers

Paper presented at the Low Permeability Reservoirs Symposium, April 26–28, 1993
Paper Number: SPE-25880-MS
...^ system analysis porosity society of petroleum engineers hinchman pressure transient testing drillstem/well testing straight line estimate fracture porosity injection well intersection time compressibility fracture porosity reservoir mobility polymer injectivity test permeability bank...
Proceedings Papers

Paper presented at the Low Permeability Reservoirs Symposium, April 26–28, 1993
Paper Number: SPE-25876-MS
... to as polynomial flow. A plot of vs. is a straight line with slope Mn. The constant Rn, represents the intercept with the vertical axis. Such plots are usually referred to as specialized plots. The slope term depends on a permeability and the geometry of the dominant mode of flow. P. 383^ polynomial flow...
Proceedings Papers

Paper presented at the Low Permeability Reservoirs Symposium, April 26–28, 1993
Paper Number: SPE-25873-MS
... classical semilog straight lines. These approximate solutions suggest the appropriate pressure, pressure-derivative, integral-pressure-derivative and time groups necessary to prepare type curves. New type curves are presented for both the pseudosteady-state interporosity flow model of Warren and Root...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 18–21, 1992
Paper Number: SPE-24376-MS
... oil permeability can be approximated by a piecewise linear function of pressure. P. 571^ flow rate oil permeability equation pressure buildup data semilog plot oil saturation permeability solution-gas-drive reservoir skin factor semilog straight line buildup data drillstem/well...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 18–21, 1992
Paper Number: SPE-24372-MS
... drillstem/well testing drillstem testing straight line dimensionless pressure drop horizontal well flow period time approximation upstream oil & gas Society of Petrohmn Engineers SPE 24372 Deviation of Horizontal Well Interference Testing From the Exponential Integral Solution Dariush...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 18–21, 1992
Paper Number: SPE-24355-MS
... the MBE with these excellent results on this basis, required Bc factor values were back calculated. These back calculated Bc factor values were then re-introduced into the MBE for all four samples with excellent results. equation machine learning straight line pvt data pvt measurement dry gas...
Proceedings Papers

Paper presented at the Low Permeability Reservoirs Symposium, April 15–17, 1991
Paper Number: SPE-21808-MS
... application transport equation pressure transient analysis reservoir drillstem testing drillstem/well testing laplacian space equation time constant anbarci specification analysis technique symposium exponential integral solution methane straight line boundary condition SPE SPE 21808...
Proceedings Papers

Paper presented at the Low Permeability Reservoirs Symposium, April 15–17, 1991
Paper Number: SPE-21831-MS
... upstream oil & gas straight line estimation graph application high-velocity effect drillstem/well testing ramey drillstem testing spe 21831 permeability rate testing procedure transient pressure analysis multiple rate test gas well society of petroleum engineers tech...
Proceedings Papers

Paper presented at the Low Permeability Reservoirs Symposium, March 6–8, 1989
Paper Number: SPE-18992-MS
..., porosity, skin, wellbore permeability, porosity, skin, wellbore storage, half-fracture length, and distance to boundaries, without type curve matching. The method consists of obtaining characteristic points of intersection of straight line portions of the curves and their slope from a loglog plot...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 11–13, 1988
Paper Number: SPE-17517-MS
... upstream oil & gas total shale model porosity exponent log-log plot water saturation water resistivity exponent straight line log analysis arw shale group shale reservoir evaluation crossplot equation shaly formation spe 17517 resistivity porosity well logging SPE Society...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 11–13, 1988
Paper Number: SPE-17545-MS
... in a naturally fractured reservoir. In this situation a conventional log-log crossplot of delta p vs. time results in two parallel straight lines with slopes equal to 0.5. Separation between the two lines allows calculation of the storativity ratio, omega. The case of a well in a layered naturally fractured...
Proceedings Papers

Paper presented at the SPE/DOE Joint Symposium on Low Permeability Reservoirs, May 18–19, 1987
Paper Number: SPE-16394-MS
... with or without measured wellbore flow rate, taking the additional wellbore volume into account. A diagnostic method is also presented for the determination of the correct logarithmic convolution straight line. It is shown that a simple deconvolution is possible when the wellbore flow rate increases (drawdown...
Proceedings Papers

Paper presented at the SPE/DOE Low Permeability Gas Reservoirs Symposium, May 19–22, 1985
Paper Number: SPE-13898-MS
... used ratetime decline relationship: (1) Arps treated the equation as empirical, but noted that the exponent can be influenced by the reservoir flow conditions. The value of b determines the degree of curvature of the semi-log decline, from a straight line (exponential decline) at be = 0.0...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 21–23, 1984
Paper Number: SPE-12916-MS
... calculation spe 12916 condensate system equation example calculation molar distribution mole fraction heptanes-plus fraction fraction upstream oil & gas straight line SPE Society of Petrolet.m Engineers of AIME SPE 12916 An Accurate Method for Extending the Analysis of C7 + by T.H. Ahmed, G.V...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 22–25, 1983
Paper Number: SPE-11830-MS
... line source pressure drawdown boundary slanted fault equation thickness straight line drillstem/well testing different dimensionless distance slanted flow barrier pressure transient testing pressure buildup vertical fault reservoir estimation spe 11830 drillstem testing pressure...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Regional Meeting, May 22–25, 1983
Paper Number: SPE-11833-MS
... equation type curve straight line drillstem testing semi log application linear impermeable barrier linear barrier buildup test graph semi log straight line detection pressure data pressure drop semilog straight line reference 12 upstream oil & gas spe 11833 drillstem/well...
Proceedings Papers

Paper presented at the Symposium on Low Permeability Gas Reservoirs, May 20–22, 1979
Paper Number: SPE-7941-MS
... pressure transient data plug buildup test Cotton Valley pressure bomb Upstream Oil & Gas reservoir pressure formation flow capacity determination fracture kh determination Cotton Valley well pressure transient test Drillstem Testing flow rate valley well storage effect straight line...

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