Compaction and Subsidence Analysis

GeoMechanics Technologies are the industry leaders in providing superior 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 pore space. 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:

  • Analytical studies for initial screening of compaction, subsidence, and well damage risks
  • 3D geomechanical reservoir modeling coupled with fluid flow reservoir simulation output to evaluate subsidence, shear stresses on any horizon, or induced strains along a 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

Our expert reservoir compaction and surface subsidence analysis services allows management to make more informed and confident operation decisions.

Subsidence due to field production