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

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Chapter 1

Semipermeable Wall Model of a Multilayer Reservoir with Crossflow

Abstract

A new model, called a semipermeable wall, is presented for a stratified reservoir. The model is used to study the influence of crossflow on pressure transient well tests and other single-phase flow problems. The reasons for single-phase crossflow in multilayer reservoirs are discussed. Solutions for linear and radial incompressible flow in a stratified reservoir with crossflow are presented; effects of reservoir parameters and crossflow on pressure are studied, and a criterion for considering crossflow between layers is suggested.

Keywords

Multilayered reservoir; Crossflow; Semipermeable walls model; Solutions

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