Geomechanics plays a significant role in the decision making process associated with many parts of the E & P business, spanning exploration, appraisal and production activities and supporting field (re-) development, abandonment and well execution phases. Petroleum Development Oman (PDO) has many mature fields that are subject to either secondary or tertiary recovery mechanisms. Geomechanics has been demonstrated to have a significant impact on the productivity, safety and environment. This is most prevalent in EOR projects and the associated waste disposal systems.
The aim of this paper is to demonstrate:
The range of potential threats and opportunities related to steam and polymer flood in EOR developments
Fit for purpose procedures that can be utilized for early screening of potential risks
How an early risk and opportunity register related to the geomechanics behavior of the reservoir due to these developments can be established and classified in a scale of likelihood of occurrence versus impact
Define fit for purpose data gathering, well and reservoir surveillance plans for mitigation
Such work is needed for a comprehensive identification of field measurements, laboratory tests and well and reservoir monitoring opportunities early in the project development process. Results from a clastic reservoir will be used as an example to illustrate the above.