Petroleum Systems of Deepwater Settings
by Paul Weimer
Duration: Two days
Intended Audience: Entry and intermediate
Prerequisites (Knowledge/Experience/Education required): Participants should have basic knowledge of sedimentary and structural geology. Useful for geophysicists, geologists, petrophysicists, and engineers.
Participants are introduced to the basic occurrences of turbidite systems within a sequence stratigraphic framework. Examples show how to modify the basic model for each kind of basin setting (structural setting, faults, and salt), high frequency sequences, sediment delivery systems, and the effects of grain sizes on turbidite systems. Carbonate and lacustrine systems are also discussed.
The key characteristics of the key reservoir elements in turbidite systems are:
The seismic stratigraphic expression of these systems is present in 2D, shallow 3D, and depth 3D, and integrated with the wireline log expression and information from outcrops, cores, and biostratigraphy. Examples from several producing basins around the world illustrate these points. The production history and the reservoir challenges in developing each of these fields is discussed.
Deepwater systems produce in many different kinds of sedimentary basins A review of these basins shows the different tectonic settings and associated structural styles (traps in mobile substrate versus non-mobile substrates). The review also demonstrates that most reservoirs are pure stratigraphic traps or combined traps. A review of seals, source rocks and modeling principles gives the geophysicist practical techniques for understanding deep-water systems.
The course concludes with a summary of what is important in the exploration for and development of deep-water systems. The application of these techniques to each geophysicist's current projects is key, as is the difference between frontier exploration and exploration in mature basins with deeper potential. Examples from three or four basins distributed globally illustrate the principles. These examples will also demonstrate that there is deep-water potential in most basins globally.