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GeoMechanics Technology

Advanced GeoMechanics from the Wellbore to the Reservoir Scale

Reservoir Compaction and Surface Subsidence Analysis

The weight of overburden sediments above a producing formation is supported partially by the rock matrix and partially by pressurized fluid within the porespace. When fluid pressure is reduced by oil and gas production, more of the load is transferred to the rock matrix, resulting in formation compaction.

This subsurface compaction can sometimes produce surface subsidence with significant displacements in both the vertical and horizontal directions. In some instances surface fissures have been created, fault movement has been induced, well casings have been seriously damaged, and offshore platforms have partially submerged.

GeoMechanics Technologies has unique expertise and experience analyzing compaction, subsidence, and well casing damage in a variety of geologic settings worldwide. We develop geomechanical models from the reservoir scale to the individual well component scale to predict subsidence and well damage risks and to develop mitigation strategies to reduce such risks.

Our services include:

  • Simple analytical studies for initial screening of compaction, subsidence, and well damage risks
  • 3D geomechanical reservoir models coupled to reservoir simulation output to evaluate subsidence, shear stresses on
    any horizon, or induced strains along any well trajectory
  • Geomechanical modeling of specific well designs to assess performance and damage risks under varying deformation
    conditions
  • Quantitative risk assessment and decision analysis services comparing the costs and benefits of alternative well designs
Simulated Surface Deformations Compared to Field Measurements
Simulated Surface Deformations Compared to Field Measurements
Simulated Surface Deformations Compared to Field Measurements