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Dr. Jon Rotzien - Basin Dynamics, LLC


November 16th, 2022 11:30 AM - 1:00 PM

 

TECHNICAL MEETING

SPEAKER:  Dr. Jon Rotzien

Basin Dynamics, LLC

November 16, 2022

11:30 AM - 1:00 PM

 

Title: MIXED DEEPWATER SYSTEMS FROM THE MID-CONTINENT TO OFFSHORE

Date: November 16, 2022

Cost: $30 Members $35 Non-members (lunch included)

Location: Devon Tower

 

 


Since the analysis of Slatt, Lowe, D’Agostino, Shanmugam, Moiola and many others on the Carboniferous Jackfork Group in Oklahoma and Arkansas, oil and gas explorers have been encouraged to think critically: “Are transitional flow deposits a problem in oil and gas reservoirs globally?” Countless stratigraphic intervals like the Jackfork contain unusual deposits that previous researchers were unable fit into the 20th century turbidite paradigm. These rocks, including some reservoir, carrier and seal intervals, are more complex than originally interpreted, and can be placed along a spectrum of sedimentary processes derived from fluid turbulence, to matrix strength, to large-scale mass-movements, and from downslope to
along slope.


Prior to the last 5-10 years, the search for conventional turbidite reservoirs promoted a singular focus on deepwater sediment transport and depositional models dominated by downslope processes. Turbidites, debrites and transitional flow deposits were
interpreted to be responsible for diverse submarine fan depositional systems comprised of elegantly interconnected canyon, channel, levee, splay and overbank environments. Today, along-slope as well as downslope (i.e., turbidity current) processes are interpreted to sculpt the modern seafloor. Ancient stratigraphic successions in revered outcrops such as the Annot Sandstone (Grès d’Annot) in France also reveal evidence of along-slope sediment transport and deposition. In response, wildcatters and academic researchers
alike have refreshed interpretations and depositional models to communicate new observations on mixed deepwater sedimentary systems to scientific and industry communities as crude oil prices remain attractive in the near term.

This presentation focuses on deepwater sedimentary processes and deposits, their predictive attributes and their 3D heterogeneity. While much of the global knowledge on deepwater has been generated through decades of oil and gas drilling, a firm understanding of deepwater sedimentary processes is essential for many offshore endeavors that take place in the water column, at the seabed, and into the subsurface, as well as onshore projects that involve deepwater sedimentary intervals (Fremin et al.,
2022; Sears et al., 2022). Professionals and students in the fields of oil and gas exploration and production, carbon capture, use and sequestration, geothermal, wind, solar, aquac