Using Rock-Based Sedimentology & Petrography to Distinguish and Predict Problematic Non-Reservoir Facies, Offshore Suriname-Guyana

Author(s): Luisa Man (presenter), Simon Greenfield, Anne McAfee, Tom Wilson, Core Laboratories UK

Regional geological studies undertaken along the Atlantic margin including Suriname-Guyana have revealed the presence of ambiguous silica-rich (biogenic) non-reservoir lithologies, which are difficult to differentiate using seismic and log interpretation techniques. These lithologies can show major variations from prognosis to the sediments penetrated during drilling and may contribute to well failure. A rock-based approach to geological evaluation, revisiting the exploration legacy of core and cuttings material provides important insights into these problematic rock types, which in some cases were not identified during visual description at the wellsite.

 Bio:

Luisa Man, CoreLab

Luisa holds a PhD in Sedimentology from the University of Bucharest.

With 9 years of experience in the industry, she is Staff Geologist at Core Laboratories in Redhill, UK, where is a sedimentologist who leads reservoir description in regional projects.

Luisa is a member of PESGB.