Dynamic Reservoir Geomechanics

4D geomechanics to understand reservoir properties over time

4D reservoir geomechanics has applications in conventional oil and gas fields and for optimizing heavy-oil recovery schemes and underground natural gas and carbon dioxide storage facilities.

Geomechanical changes that affect the levels of subsurface stress during the life of an oil or gas field can cause severe field development and production challenges. They can induce formation compaction and subsidence, changes in reservoir permeability, water breakthrough, and fault reactivation. In the reservoir and the overburden, the geomechanical changes caused by production scheduling, combined with complex geology, can influence wellbore stability and cause casing collapse and sanding across the field. To make the best decisions when drilling and completing their wells, operators must consider, from the outset, the geomechanical behavior of the reservoir and surrounding formations throughout the field’s production life.

The right information can prevent unforeseen problems from occurring or from affecting the field. Time-lapse, or 4D, geomechanics is critical to understanding and predicting how reservoir properties will change throughout the life of the field.

Production through simulation

Schlumberger provides accurate predictions of reservoir behavior using the ECLIPSE and Petrel software packages. Predictions integrate data from a variety of sources—including 3D surface seismic, well logging, core data, and well test data, and can be calibrated with monitoring data such as 4D seismic, microseismic, repeat well logging, subsidence measurements, and wellbore stability events.

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4D Reservoir Geomechanics Modeling

4D reservoir geomechanics
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