With offices in Spokane, Washington, Calgary, Alberta, and
Missoula and Billings, Montana, we provide comprehensive geological and geophysical consulting services across the United States and Canada.  Our focus is on the petroleum and mining industries, but we also serve archaeological and environmental firms. 

Bakken Field Trip

We lead an exclusive customized field trip to the Bakken formation in Montana each summer or on demand.  Each trip can be customized to the client's needs and current focus. The principals and associates have decades of experience running field trips in academia and industry.

Geological Services

Our experience encompasses nearly all facets of the Industry, from conventional plays to unconventional shale gas plays.  We have worked in most basins in the lower 48, as well as Internationally.  Our experience spans production-scale work to basin analysis and play and prospect generation in both mature and frontier settings.

PRISEM Geoscience Consulting

Featured Services

PRISEM was established by Ted Doughty and Steve Sheriff in 2005 and it has grown to over 6 people working in multiple offices in the U.S. and Canada.

Our Advantages

Cost effective and focused on results



and Expert Staff


P. Ted Doughty, Ph.D., Petroleum Geology

Steven D. Sheriff, Ph.D., Geophysics

George W. Grader, Ph.D. Stratigraphy

Erik Quartero, M.Sc. Geology


Gary McSweyn, Land Services

​Bob Quartero, M. Sc. Petroleum Geology

- Montana Bakken field trip (5 years and counting)
​- Northern Rockies expertise
​- 51-101 Compliant reports
- Play and prospect evaluation
- Subsurface mapping (Petra)
- Seismic Interpretation (Kingdom)