OERA Webinar Series – David Piper, Saint Mary’s University

December 6, 2018 – 1:00 – 2:00 pm AST
David Piper, Saint Mary’s University; Geological Survey of Canada (Atlantic); Bedford Institute of Oceanography, Nova Scotia
“Modelling of sandstone reservoir distribution and quality in the Scotian Basin”

Few wells penetrate the deep-water parts of the Scotian Basin, whereas the numerous wells in shallower water provide a detailed record of the properties and amounts of sands deposited in deltas that have become the reservoir rocks for oil and gas. The distribution of sandstones in deep water and their quality as reservoir rocks can be assessed using numeric models that simulate the dispersion of sediment in an ancient basin. Such models are calibrated against the rock types intersected in wells and the thicknesses of geological units from seismic data, both on the shelf and in deep water. Multiple model runs can be used to evaluate the sensitivity of the model predictions to various environmental parameters including changes in river source, climate and past tidal range, thus allowing quantitative evaluation of the probability of particular scenarios. An example from the central Scotian Basin illustrates both the potential and the pitfalls of the method. We will also show innovative work on predicting reservoir quality in deep water from the mineral composition of sands on the shelf.  Finally, we will present ideas on how this modelling technique can be applied to outstanding problems elsewhere in the Scotian Basin.