ABSTRACT

ABSTRACT: Field development from exploration to abandonment benefits from using geomechanical modeling for making better long-term operational and management decisions. Geomechanics has become an essential part of the petroleum industry’s daily route due to increasing challenges in operations when dealing with deep and tight, unconventional, and subsalt reservoirs, depleted zones, drilling horizontal wells specially in the direction of the minimum stress when intended to place multistage hydraulic fractures. The challenges will increase in the areas when stimulating zones have high breakdown pressure.

Development of various challenging conventional and unconventional reservoirs with severe stress sensitivity is raising awareness that Geomechanics is a vital aspect of reservoir management. A significant change in formation pressure caused by injection/depletion will induce deformation and stress/strain changes in the reservoir.

This work leads to better understanding of the reservoir, help precise landing of the lateral in better reservoir quality rock with spatial variation in stresses to optimize drilling, completion, stimulation, maximize hydrocarbon production, and improve the reservoir life cycle from exploration to abandonment.

INTRODUCTION

Geomechanical workflows have been implemented in each operation separately. Drilling geomechanics has been developed when oil and gas industry moved to challenging environment, whereas stimulation geomechanical workflows have been established for tight and unconventional reservoirs to maximize hydrocarbon recovery, and production and field geomechanical approaches have been established to study the impact of injection and depletion for stress sensitive reservoirs to understand failure mechanism. In this research a comprehensive integrated geomechanical workflow was established to cover all aspects of reservoir development from exploration to abandonment.

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