Geomechanics

A complete 1D geomechanical workflow — from geostatic stress and pore pressure to elastic moduli, rock strength, horizontal stresses and wellbore-stability analysis for drilling and stimulation.

Stress and pressure

• Vertical (geostatic) stress — integration of the density log.
• Hydrostatic pressure — fluid-column reference pressure.
• Pore pressure — Eaton prediction and normal-compaction trends.
• Horizontal stresses — poroelastic model for Shmin / SHmax.
• Wellbore stability — fracture and collapse gradients.

Elastic properties

• Shear-wave reconstruction — Castagna (mudrock / shaly-sand) when DTS is absent.
• Dynamic elastic properties — E, ν, K, G from Vp, Vs and density.
• Static elastic modules — empirical dynamic-to-static transforms.

Rock strength

• UCS — unconfined compressive strength by empirical methods.
• FANG — angle of internal friction.
• Tensile strength (TSTR).

This page summarises the Geomechanics section of the Wellbore.AI / Gamma technical manual.

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