Grid Files for the 3-D Geologic/Petroleum System Model of the Western Canada Sedimentary Basin (WCSB)

A 3-D geologic/petroleum system model of the Western Canada Sedimentary Basin (WCSB) was created by using elevations on the top of the Lower Cretaceous Mannville Group as a reference horizon for stacking 18 isopach intervals from the base of the Devonian Woodbend Group and age equivalent formations, stratigraphically upward to the ground surface; this includes an estimated thickness of eroded sediments based on 1-D burial history reconstructions for 33 wells across the study area. Each interval for the construction of the 3-D model was chosen on the petroleum system basis of whether it is primarily composed of reservoir, hydrocarbon source, seal, overburden, or underburden strata, as well as the quality and areal distribution of well and other data. Data from numerous databases and data sets were accessed to create the isopach intervals. Interval boundaries are primarily formation tops that were derived from data retrieved from the databases. Because formation names commonly change across province and national boundaries, formations that comprise the intervals were chosen based on age-equivalent strata. These isopach files were gridded at approximately 1-kilometer spacing and saved for publication as zmap-format grid files.