A study was initiated to improve the geomechanical input to the full field compaction/subsidence prediction model for Valhall and wellbore stability analysis models used to plan long extended reach wells in the Valhall field. The results are also applicable for other geomechanical activities in the field, like well design, waste injection, hydraulic fracturing stimulation in the reservoir and the design of a potential waterflood. The study used an integrated approach to characterize the Tertiary formations above the chalk reservoirs. In-situ stresses (magnitude and direction), pore pressure and geomechanical deformation properties of the formations were determined. Results, observations and conclusions are presented.

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