The Company

Geological supervision

Belloy Geosteering is a Houston, Texas based privately owned company providing geological wellsite supervision now for over 40 years. Belloy Geosteering was first incorporated in 1979 to provide on-site geological supervision during the drilling of oil and gas wells. With a focus on providing quality service and dependable client support both in the field and in the office, Belloy Geosteering has developed long term relationships with hundreds of clients over the years that translated into many repeat opportunities to provide professional geological coverage.

Currently Brian Fyke – President , Robert Harvey – Vice President, Jeff Kriz Operations and Geosteering Manager, Keith Gillis –Operations and Geosteering Manager and Douglas Oicle – Director,(all P.Geol.’s) operate Belloy Geosteering as owners. All having previous geological wellsite supervision experience, the management group is very strong in creating a balanced approach to providing the best coverage to suit the client’s needs, following the daily operations to ensure execution of that coverage, quality control and constant monitoring of our safety practices to ensure zero incidents.

Our main service remains geological wellsite supervision for the oil and gas industry but has expanded to include operational support, assistance in the implementation of multi-well programs, industrial mineral targets, water source projects, petrological analysis and remote geosteering services.  At Belloy Geosteering, we take pride in providing the highest quality service and in developing trusting long term relationships with both our clients and our geological associates. With our large number of experienced geological associates (all with a minimum B.Sc. degree in Earth Science), Belloy Geosteering can meet the needs of all operators and has proven to constantly evolve with this ever changing industry.

Company Culture

Belloy Geosteering has an extensive selection of wellsite geological associates, whose breadth of experience covers the entire Western Canada Sedimentary Basin along with some exposure to eastern North America and overseas drilling. We can provide geosteering geologists to meet your specific needs.

All of our associates have a minimum 4 year B.Sc. in Geological Sciences, and have also completed the Canstrat Sample Examination Course and a basic wireline log interpretation course or have related industry experience. All Belloy Geosteering associates are required to have valid H2S Alive, Standard First Aid, CPR, TDG and WHMIS tickets, and we encourage everyone to maintain other industry-related certificates such as PST.

The Principals

Belloy Geosteering is managed by Brian Fyke, President; Rob Harvey, Vice President; Jeff Kriz, Operations & Geosteering Manager; Keith Gillis, Operations & Geosteering Manager and Doug Oicle, Director. As degreed professional Geologists (APEGA) with backgrounds in petroleum and minerals exploration, we bring a practical approach to the hiring and training of our associates. We encourage the continued improvement of even our most senior associates by promoting continuing industry-related education. We do our best to provide each of our clients with an associate that is well suited for the specific play, and make every effort to provide the best quality service to all our clients.

Doug Oicle



Mr. Oicle graduated from St. Francis Xavier University in Antigonish, Nova Scotia with a B.Sc. Hons. in Geology. The next 5 years were spent in the mineral exploration industry as a mapping assistant with the Nova Scotia Department of Mines, Seabright Resources, Nova Gold Exploration in Nova Scotia, Taiga Consulting with work in the North West Territories and with East Field Resources out of Vancouver with mineral exploration in north British Columbia. The exploration projects involved ground level mapping, geochemical testing, MAG & VLF surveys and trenching.

These evolved into drilling projects involving the planning of drill targets, mobilization of equipment, camps and personnel, drilling support, core logging, report generation and open-pit mapping. Doug joined Belloy Geosteering in 1990 as a wellsite geologist and supervised over 130 wells. In 1994, he joined company founder Bob Sullivan as part owner and operations manager of Belloy Geosteering, became Vice President and later President on the retirement of Mr. Sullivan. He is currently a member of the CSPG, AAPG and holds a P.Geol. with APEGA.

Brian Fyke



Brian graduated from the University of Calgary in 1989 with a B.Sc. in Geology. Mr Fyke joined Belloy Geosteering as a wellsite geologist in 1993. After 5 years in the field he moved into the office joining the management team in the fall of 1997. Prior to joining Belloy Geosteering Brian worked as a field geologist on remote gold exploration projects across Northern Canada for Taiga Geological Consultants and Noranda Mining and Exploration Inc. These projects included participating in grass roots exploration up to supervising and managing multiwell drilling projects. Mr Fyke sat on the board of directors of New North Resources, a junior oil and gas company from 1999 to 2002. He is currently a member of the CSPG, AAPG, and APEGA.

Rob Harvey


Vice President

Rob graduated from University of Calgary in 2005 with a B.Sc. in Geology. His first exposure to the patch was as a roughneck for Precision Drilling before university. Prior to joining Belloy Geosteering in February 2007, Rob worked as an office geologist with Canadian Natural Resources Ltd. Since joining Belloy Geosteering, Rob has supervised vertical and horizontal wells for numerous operators along with covering rotations on our remote geosteering work. He is currently a member of the CSPG, AAPG, and APEGA.


Operations and Geosteering Manager

Jeff graduated from the University of Calgary in 2009 with a B.Sc. in Geology (Petroleum Concentration). For the next 2 years, Jeff studied Mining & Mineral Exploration at BCIT in Burnaby, BC while doing field work focused on a rare earth mine development in Alaska for Aurora Geosciences. He then joined the oil patch in 2011 and worked as a Wellsite Geologist for 10 years across the WCSB. Before joining Belloy, Jeff gained practical experience running Rogii’s StarSteer software and eventually joined Rogii in 2021 where he gained the title of Technical Support Lead. Jeff’s knowledge of drilling operations and geosteering will be a great asset to Belloy’s management team. He currently holds a P. Geol. with APEGA. 

Keith Gillis

Operations and Geosteering Manager

Keith graduated from Saint Francis Xavier university in 2012 with a BSc in Geology. Following graduation, Keith spent two years mapping and core logging on various mineral exploration programs in eastern Canada. Keith then joined Belloy in 2014 as a wellsite geologist and has since supervised 200+ wells across the WCSB. In addition to his extensive wellsite and remote geosteering experience, he has also spent time as an in-house operations geologist consultant. Keith is also registered as a Professional Geoscientist (P.Geo) with the Association of Professional Engineers and Geoscientists of Alberta (APEGA).