O'Reilly logo

Well Test Analysis for Multilayered Reservoirs with Formation Crossflow by Chengtai Gao, Hedong Sun

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 7

Determination of Parameters for Individual Layers by Transient Well Tests in Multilayer Reservoirs

Abstract

Approximate expressions for the pressure response and flow rates of individual layers are given when a well produces at a constant production rate from an infinite multilayer reservoir either with or without interlayer crossflow. The kh product and skin factor of each layer can be determined by one drawdown test if the common wellbore pressure and the rate of each layer can be measured at the same time. The behavior of the crossflow, caused by skin factors, is discussed. A new method for determining the vertical permeabilities of the shales between layers is developed with the crosspoint of the two straight lines of drawdown ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required