Our Team
Our professionals have degrees and directly applicable experience in: Petroleum Engineering, Geological Engineering, Geophysical Engineering, Chemical Engineering, Geology, Hydrogeology, Environmental Science and Geography.
Our highly qualified team members have extensive experience in Subsurface Fluid Flow related to Industrial, Mining and Hydrocarbon Recovery sectors.
Our team consists of dedicated professionals with relevant project experience related to the subsurface injection of wastewater, carbon dioxide (CO2), and fluids related to in-situ mining operations.
Wes Janes, B.S., P.G.
Hal Demuth, M.S.
Ken Cooper, M.S., P.E.
Ken Cooper is one of the managing principals of Petrotek and serves as the Director of Engineering. He holds both B.S. and M.S. degrees in Petroleum Engineering from the Montana College of Mineral Science and Technology (now the University of Montana School of Mines & Engineering) and is a registered professional engineer in Colorado and numerous other states. Prior to helping found Petrotek in 1993, he gained engineering experience working in the petroleum industry and for petroleum/uranium/injection well consultancies.
Ken has more than 35 years of experience working with all classes of injection wells and specializes in investigating well feasibility, reservoir issues and testing, reservoir simulation, well compliance and permitting, along with optimizing injection well operation and maintenance.
Ken has published and given a variety of talks and short-courses regarding subsurface injection, pressure transient well testing, and the simulation of subsurface fluid flow over the years, provides expert witness testimony regarding well permitting, subsurface resources and injection wells, is a board member of the GWREF and UITC, and has been an active member of both the GWPC (formerly the UIPC) and the Society of Petroleum Engineers (SPE) since the 1980s.
Ken enjoys engineering consulting as it gives him an opportunity to work with people from all over the country and help solve a variety of problems. Outside of work, Ken likes spending time with his wife, hiking, four-wheeling, an occasional good craft beer, and traveling. He hopes one day to have visited all seven continents.
Ken Schlieper, B.S.
Brian Ault, B.S.
Brian Ault is the Senior Technical and Project Manager for Petrotek. He holds a B.S. degree in Petroleum Engineering from Marietta College in Ohio and has more than 35 years of professional experience. Brian began his career in the oilfield service industry spending five years working for The Western Company of North America. He then spent five years working for Meridian Oil/Burlington Resources in the San Juan Basin, New Mexico/Southern Colorado. He moved to Denver in 1997 and after a one-year engagement with a consulting firm, he started working for Ultra Petroleum. After more than eight years with Ultra; working in permitting, reservoir evaluation, drilling, completions, production and regulatory reporting; helping to guide them to over seven billion dollars of market capitalization, he took early retirement. Retirement did not take and his interest in the industry brought him to Petrotek.
In has various assignments with various oil and gas production companies Brian gained extensive experience, primarily in the areas of well completions and production. Brian’s expertise relates to his vast experience across many disciplines within the oil and gas arena, but primarily in his ability to deliver projects safely, on schedule, on budget, and aligned with business goals.
During his time away from work, Brian enjoys spending time with his five kids and crawling over the rocks around Moab, Utah in his Jeep.
Tyler Burton, PhD
Connie Walker, M.S.
Connie Walker is a senior geologist with a B.S. degree in geology and an M.S. degree in geology from the Colorado School of Mines. She has over 35 years of experience in the fields of geology, regulatory analysis and compliance, and waste analysis, as well as hazardous, non-hazardous, mixed and radioactive waste characterization, management and disposal. Mrs. Walker served as program director and manager for contracts supporting the US EPA Headquarters Office of Radiation and Indoor Air, and has managed State and regional RCRA, CERCLA, and NEPA contracts. She has performed and managed every aspect of RCRA support from RFAs, RFIs, CMSs, groundwater monitoring/corrective action development to permitting, including preparation of hazardous and non-hazardous treatment, storage, and disposal permit applications, closure, and post closure plans.
She has prepared and reviewed Land Ban Exemption Petition requests for both the UIC and RCRA programs. She has performed the spectrum of permit support activities ranging from permit modification request development and review, permit writing/preparation, permit modification request reviews, expert witness testimony, and permit compliance maintenance.
Most recently, Mrs. Walker prepared permit applications and Land Ban Petitions for commercial clients throughout the country, with emphasis on site geologic feasibility, hydrologic conditions, well design, construction, testing, monitoring, operation, and waste analysis. Mrs. Walker was involved with corrective action rulemaking for EPA Office of Solid Waste and rulemaking for Waste Isolation Pilot Plant waste characterization activities on behalf of the EPA Office of Radiation and Indoor Air. She provides regulatory analysis and training with an emphasis on RCRA and UIC regulations on both a state and federal level.
Lewis Wandke, B.S., P.E
Lee Shafer, B.S., P.E.
Aaron Payne, M.S., P.G.
Adam Simonsen, M.S.
Anthony Pennino, B.S.
Cameron Kerr, B.S.
Cameron is a Project Engineer at Petrotek where he applies his oil and gas industry experience along with knowledge gained by earning a B.S. degree in Petroleum Engineering from the Colorado School of Mines. Following graduation from Mines, Cameron spent time in the oil and gas space as a Production Engineer, Field Frac Engineer, and Completions Engineer. At Petrotek, his work focuses on new Class I permit applications, injection well workover support, and the analysis of annual mechanical integrity and reservoir testing activities for client submissions to regulatory agencies. Cameron has experience in multiple basins including the Western Anadarko Basin, DJ Basin, Powder River Basin, and Permian Basin.
Prior to attending Mines, Cameron attended the University of Denver and graduated with a degree in Finance with an Economics minor and was a four-year member of the Lacrosse Team. Cameron is a member of the Society of Petroleum Engineers.
Charles Wilson, B.S.
David Huffington, M.S., P.G.
James Klutho, B.S., P.E.
Jeremiah Demuth, A.A., STS
Jeremiah is an engineering technician and holds an Associate degree from Red Rocks Community College. He has supervised permitting and drilling operations for multiple Class II wells in the DJ Basin. He also works with industrial, ISR, and oil and gas clients to provide site supervision for drilling and workover operations, as well as site safety and annual mechanical integrity testing.
Jeremiah also serves as the corporate health and safety officer for Petrotek and has specific training in the OHSA 1910 standards, Lockout/tagout, Oil and Gas Safety, OSHA 10- hour (general industry) and OSHA 30-hour (General industry), and maintains HAZWOPER (40 hour) certification. Jeremiah lives with his wife and their children in Colorado. In his spare time, he enjoys writing, hunting, and martial arts.
Matthew Bourdon, M.S.
In his spare time, Matthew enjoys hiking, fishing, camping, and traveling around the world with his family.
