Dual-porosity poroelastic analyses of wellbore stability

This paper presents a numerical solution of dual-porosity poroelastic formulations that couple solid deformations with fluid flow in both matrix and fracture systems of naturally fractured reservoirs. The finite element numerical method was applied to solve the inclined wellbore problem in which mud weight was considered for both permeable and impermeable boundary conditions. Failure criteria relevant to tensile, collapse, and shear failure modes were introduced into the numerical model and resulting failure areas around boreholes were subsequently defined. Several related applications, including the stability of inclined and horizontal wellbores under various in situ stress regimes, were evaluated. Upper and lower mud weight bounds and the most stable borehole orientations were determined. The best trajectory selections for horizontal boreholes were also investigated.

[1]  N. Cook,et al.  Analysis of borehole breakouts , 1989 .

[2]  J. E. Warren,et al.  The Behavior of Naturally Fractured Reservoirs , 1963 .

[3]  D. Elsworth,et al.  Multiporosity/multipermeability approach to the simulation of naturally fractured reservoirs , 1993 .

[4]  Paul F. Gnirk,et al.  The Mechanical Behavior of Uncased Wellbores Situated in Elastic/Plastic Media Under Hydrostatic Stress , 1972 .

[5]  D. C. Woodland.  Borehole Instability in the Western Canadian Overthrust Belt , 1990 .

[6]  Emmanuel M Detournay,et al.  Poroelastic response of a borehole in a non-hydrostatic stress field , 1988 .

[7]  J. B. Martino,et al.  Comparison of borehole breakouts from laboratory and field tests , 1994 .

[8]  Younane N. Abousleiman,et al.  Dual-porosity poroelastic modeling of generalized plane strain , 1999 .

[9]  B. Shen,et al.  THE DISTURBED ZONE AROUND TUNNELS IN JOINTED ROCK MASSES , 1997 .

[10]  B. Aadnøy.  Modelling of the Stability of Highly Inclined Boreholes in Anisotropic Rock Formations , 1987 .

[11]  W. E. Bamford,et al.  Effects of deformation and strength anisotropy on borehole failures in saturated shales , 1993 .

[12]  Jean-Claude Roegiers,et al.  Influence of anisotropies in borehole stability , 1993 .

[13]  Emmanuel M Detournay,et al.  Two-dimensional elastoplastic analysis of a long, cylindrical cavity under non-hydrostatic loading , 1987 .

[14]  B. Aadnøy.  Modeling of the stability of highly inclined boreholes in anisotropic rock formations , 1988 .

[15]  Younane N. Abousleiman,et al.  Review of some poroelastic effects in rock mechanics , 1993 .

[16]  Roland W. Lewis,et al.  A novel finite element double porosity model for multiphase flow through deformable fractured porous media , 1997 .

[17]  M. King Hubbert,et al.  Mechanics of Hydraulic Fracturing , 1972 .

[18]  Jincai Zhang,et al.  Dual-porosity approach to wellbore stability in naturally fractured reservoirs. , 2002 .

[19]  M. Dusseault,et al.  Borehole Yield and Hydraulic Fracture Initiation in Poorly Consolidated Rock Strata. Part II. Permeable Media. , 1991 .

[20]  P. Horsrud,et al.  Rock Mechanics Applied To The Region Near A Wellbore , 1983 .

[21]  G. I. Barenblatt,et al.  Basic concepts in the theory of seepage of homogeneous liquids in fissured rocks [strata] , 1960 .

[22]  J. Istok.  Groundwater Modeling by the Finite Element Method , 1989 .

[23]  Victor N. Kaliakin,et al.  Finite element formulation and application of poroelastic generalized plane strain problems , 1997 .

[24]  A. Cheng,et al.  Poroelastic Solution for an Inclined Borehole , 1997 .

[25]  W. B. Bradley.  Failure of Inclined Boreholes , 1979 .

[26]  Per Horsrud,et al.  Sand Stresses Around a Wellbore , 1982 .

[27]  Hossein Kazemi,et al.  SPE-002156-B - The Interpretation of Interference Tests in Naturally Fractured Reservoirs with Uniform Fracture Distribution , 1969 .

[28]  I. Bradford,et al.  A semi-analytic elastoplastic model for wellbore stability with applications to sanding , 1994 .