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Stampede Field, USGOM: An Integrated Approach

Abstract

Located in Green Canyon protraction area of deep water Gulf of Mexico (~3,500 ft water depth), Stampede is a sub-salt middle Miocene age oil discovery currently in development phase. It is one of the deepest fields in the GOM (~30,000′ TVDSS) and lies in a 4-way structural closure segmented by faults. The field was discovered and appraised by four wells. The opportunity of recovering more than 300 MMBO oil came with challenges on both the subsurface and non-subsurface front. The three key subsurface challenges facing Stampede field development were reservoir compartmentalization, stratigraphic complexity and fluid contact uncertainty. These issues were addressed in detail by integrating structural and stratigraphic interpretation based on state-of-the-art 3D dual coil seismic data, fault-seal analysis, pressure and fluid data from wells, all scales and types of the core datasets, and results from a multi-disciplinary tool, Geo2 Flow. The products and knowledge from this integration effort were used in building the geological model and flow simulation. Results led to a base case plan which was used to design a 10-well (6 producers, 4 injectors) program to develop and produce from the field. Some of the key non-subsurface challenges included an optimized drilling plan utilizing two rigs, subsea layout, hull and topsides fabrication and installation - all in a timely manner without compromising safety and in a low price environment. In this paper we would briefly discuss the above challenges and the integrated team effort to overcome them to meet the first oil deadline in first quarter of 2018.