WIT Press


Wellbore Stability Analysis In Porous Carbonate Rocks Using Cap Models

Price

Free (open access)

Paper DOI

10.2495/DF040271

Volume

47

Pages

10

Published

2004

Size

613 kb

Author(s)

L.C. Coelho, A.C. Soares, N.F.F. Ebecken, J.L.D. Alves & L. Landau

Abstract

It is well established that hydrocarbon wellbores fail under tension mode or shear compressive mode. Although there are sophisticated constitutive models that may represent the behavior of the rock, the lack of data available lead to the use of simple models such as elastic models with a failure criteria, and the Drucker- Prager or Mohr-Coulomb elastic-plastic models with associated or nonassociated flow rules. Recently, many studies have been published on the behavior of porous rocks. Mechanisms of pure compression failure (no shear) have been described. Cap plasticity models may represent the material pure compression failure. An experimental program and numerical simulations on porous carbonate rock from Campos Basin, offshore Brazil, carried out in

Keywords