Inflow Performance Relationship ( IPR ) For Solution Gas-Drive ReservoirsAnalytical Considerations
Conference Paper
Overview
Identity
Additional Document Info
Other
View All
Overview
abstract
AbstractThis work provides the analytical development of "Vogel"-type Inflow Performance Relation (or IPR) correlations for solution gas-drive reservoir systems using characteristic flow behavior.Specifically, we provide the following results:An analytical form of the quadratic (Vogel) IPR correlation: q o q o , max = 1 v [ p w f p ] ( 1 v ) [ p w f p ] 2 Where the v-parameter is defined for the solution gas-drive reservoir case using the oil mobility function (i.e., [(ko/(oBo)]) this definition is given by: v = 2 [ k o / ( o B o ) ] p = 0 [ k o / ( o B o ) ] p + [ k o / ( o B o ) ] p = 0 The analytical form for a cubic IPR correlation: q o q o , max = 1 [ p w f p ] [ p w f p ] 2 [ p w f p ] 3 The analytical form for a quartic IPR correlation: q 0 q 0 , max = 1 [ p w f p ] [ p w f p ] 2 [ p w f p ] 3 [ p w f p ] 4The practical value of this work is that we have proven that an IPR can be written for a given solution gas-drive reservoir system directly from rock-fluid properties and fluid properties.The "theoretical" value of this work is that we provide a "characteristic" formulation of the oil mobility profile [ko/(oBo)], which is given as:[ 1 [ k o / ( o B o ) ] p [ k o / ( o B o ) ] p i ] = 1 [ p p i ] + ( 1 ) [ p p i ] 2 2 ( 1 ) [ p p i ] 3 ( 1 )This proposed "characteristic" mobility model is validated against numerical simulation results from the literature and from work performed as part of this study. Note that the characteristic mobility is only a function of the characteristic parameter (), the initial and average reservoir pressures (pi and p), and the oil-phase mobility evaluated at the initial reservoir pressure [ko/(oBo)]pi.
