Abstract
Reservoir compartmentalization, stratigraphic complexity, and fluid contact uncertainty are the three key issues in the development of the Stampede field. We studied these issues in detail by integrating structural and stratigraphic interpretation and using state-of-the-art 3D dual coil seismic data, fault-seal analysis, pressure and fluid data from wells, core datasets, and logs. We used the products and knowledge from this integration effort to build the geological model. Key focus areas included: trap geometry, sealing capability of faults, environment of deposition (EOD), facies distribution, geochemical analysis of fluids, and oil-water contact (OWC) estimation. We built the geologic model honoring the data and observations to capture all the uncertainties and their ranges. We used this model for flow simulation resulting in a 10-well development plan, with six producers and four injectors for the base case.
In this paper we discuss some of the components of this multi-disciplinary effort toward the field development plan at Stampede, highlighting the challenges and solutions. The work helped us (a) incorporate fault-seal related compartmentalization into the simulation model, (b) properly represent facies types in the geological model, (c) better understand the compartments and associated OWCs, and (d) understand their impact on flow simulation and field development.
