Founded in 1971, Trimble is comprised of an experienced team of Professional Engineers, Geologists and Engineering Technologists.

Stephen C. Trimble, P.Eng.

President & Principal Engineer
  • Reservoir and Exploitation Engineering
  • Reserve Determinations and Audits
  • Resource and Unconventional Reserve Appraisal
  • Oilsands Appraisal
  • Economic and Risk Analysis
  • Exploration and Prospect Studies
  • Due Diligence Activities
  • Resource Supply & Ultimate Potential Studies
  • Expert Testimony
  • Information Systems and Database Administration
  • Property & Project Management
  • Business Unit & Multi-Disciplinary Team Management

Ralph Sanford, Professional Licensee (Engineering)

Vice President
  • Reservoir and Exploitation Engineering
  • Reserve Determinations & Audits
  • Resource and Unconventional Reserve Appraisal
  • Economic and Risk Analysis
  • Project Management
  • Acquisitions & Divestitures
  • Due Diligence Activities
  • Resource Supply & Ultimate Potential Studies
  • Log Analysis
  • Oil & Gas Property Management & Administration

Gerry Patychuk, P.Eng.

Senior Engineering Associate
  • Reservoir and Exploitation Engineering
  • Reserve Determinations & Audits
  • Resource and Unconventional Reserve Appraisal
  • Economic and Risk Analysis
  • Exploration Prospect Studies
  • Acquisitions & Divestitures
  • Due Diligence Activities
  • Resource Supply & Ultimate Potential Studies
  • Property & Project Management
  • Corporate Governance
  • Corporate Budgeting and Reporting

Dzintra Ziemelis, P.Eng.

Senior Engineering Associate
  • Reservoir and Exploitation Engineering
  • Reserve Determinations & Audits
  • Resource and Unconventional Reserve Appraisal
  • Economic and Risk Analysis
  • Exploration Prospect Studies
  • Acquisitions & Divestitures
  • Regulatory Reporting & Submissions
  • Property & Project Management

Khani Ghaffari, P.Eng.

Senior Engineering Associate
  • Reservoir and Exploitation Engineering
  • Reserve Determinations and Audits
  • Resource and Unconventional Reserve Appraisal
  • Economic and Risk Analysis
  • Exploration and Prospect Studies
  • Due Diligence Activities
  • Resource Supply & Ultimate Potential Studies
  • Property & Project Management
  • Log Analysis
  • Acquisitions & Divestitures

Ron R. Pacholko, P.Eng.

Senior Engineering Associate
  • Reservoir and Exploitation Engineering
  • Reserve Determinations & Audits
  • Resource and Unconventional Reserve Appraisal
  • Economic and Risk Analysis
  • Exploration Prospect Studies
  • Acquisitions & Divestitures
  • Due Diligence Activities
  • Resource Supply & Ultimate Potential Studies
  • Regulatory Reporting & Submissions
  • Expert Testimony
  • Property & Project Management
  • Business Unit & Multi-Disciplinary Team Management

Timothy J. Norick, C.E.T.

Senior Petroleum Technologist
  • Reservoir Technology
  • Reserve Determinations & Audits
  • Resource and Unconventional Reserve Appraisal
  • Economic and Risk Analysis
  • Log Analysis
  • Regulatory Submissions
  • Database Administration
  • Computer Software Implementation

Donovan C. Armstrong, C.E.T.

Petroleum/Geotechnical Technologist
  • Reservoir Technology
  • Reserve Determinations & Audits
  • Resource and Unconventional Reserve Appraisal
  • Economic and Risk Analysis
  • Log Analysis
  • Regulatory Submissions
  • Database Administration
  • Computer Software Implementation

Randy J. Smith

Director, Business Development
  • Business Development
  • Sales Management
  • Marketing Management
  • Advertising
  • Promotion
  • Market Research
  • Client Relations
  • Strategic Planning
  • International Business

John Davey, P.Geo.

Senior Geological Associate
  • Exploration and Development Geology
  • Geological Mapping
  • Prospect Generation
  • Oil & Gas Asset Reviews
  • Evaluate Prospect Areas
  • Log Stratigraphy
  • Land Sale Assessment
  • Review 3rd-party Projects