Integrated geological and geophysical analysis of a heavy-oil reservoir at Pikes Peak, Saskatchewan
Ian Andrew Watson
Various seismic techniques can be used for monitoring zones of steam injection in heavy-oil recovery. In this integrated case study, post-stack interpretation based analysis techniques are used to delineate steamed and heated reservoir zones at Husky Energy's Pikes Peak heavy-oil field in Saskatchewan. Four methods are compared including reflectivity differencing, impedance differencing, P-wave traveltime ratios, and an isochron method for examining Vp/Vs. All methods show promise and consistency for delineating areas of steam injection and temperature increase in the reservoir away from well control.
The integration of well and seismic data reveals methods to further understand the reservoir. The percentage of sand in the reservoir interval is estimated using Vp/Vs. The reservoir trap and bottom-water presence are interpreted using isochron measurements of a deeper interval.
A single multicomponent seismic survey is a powerful tool for reservoir surveillance and interpretation at any stage of field development.