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 3

Pressure Transients and Crossflow Caused by Diffusivities in Multilayer Reservoirs

Abstract

This section considers single-phase unsteady flow in a system of homogeneous layers separated by thin, low-permeability shales, and it has interlayer crossflow caused by different diffusivities for different layers. The model considers all layers are perforated that flows at a constant total rate. Numerical simulations of the problem for the semipermeable wall model are used to find the structure of the crossflows in typical cases. Analytical solutions for pressure and the n−1 diffusivity crossflows are developed and compared with the numerical results. These solutions show how the diffusivity crossflows depend on layer properties and ordering. ...

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