Our Team

Bill Zhang, P.Eng., Ph.D

Bill Zhang is the petroleum reservoir systems advisor. He is a specialist and tenured professor of Petroleum Engineering and a professional engineer. His research interests are Heavy oil EOR, Tight oil/gas reservoir development, High-performance reservoir simulation, Transient pressure analysis and reservoir characterization, Non-Darcy flow in porous media, unconventional gas reservoir development, CO2 EOR & geo-sequestration.

He obtained his BS and MS degrees from the Southwest Petroleum Institute in China, and Ph.D. from the University of Regina, all in Petroleum Engineering. He worked as a research engineer with the Saskatchewan Research Council (SRC).

Abu Yusuf, P.Geo., P.Eng

Arman Sunaryo is the Principal Geological Advisor Geosciences at Drichels Energy Inc. He has 30 years of diverse and international experience in petroleum development and production with expertise in conventional and unconventional developments, field development, reservoir characterization and 3D modeling. He has been involved in all stages of development/production fields, modeling, well planning, drilling monitoring, operation and formation evaluation. His worldwide experience includes Indonesia, Nigeria, Equatorial Guinea, Yemen and Canada. Previously, Mr. Sunaryo worked for different multinational Oil and Gas and consultant companies.

Syd Koorosh Khalilinejad MBA, PEng

Syd Koorosh Khalilinejad is Principal Advisor, Business Development at Drichels Energy Inc. Syd has a wealth of International experience in commercial and operations of upstream projects. He has worked in variety of roles including: strategy and corporate planning, acquisition and divestiture, portfolio optimization, asset management, production/field operations; and reserves, reservoir/exploitation engineering. Syd’s experience in North America includes management of heavy oil production from seven Canadian assets, portfolio analysis, upstream valuation, M&A and promotion of assets including oil sands, tight-gas, heavy oil, and conventional plays. He also led multidisciplinary teams to optimize, design, develop, and construct several SAGD pads and green/brown field oil sand facilities (CPF). Syd worked in several emerging markets including Oman, Pakistan, Iran, UAE, Yemen, and Tunisia. He led and managed major operations for Baker Hughes and Weatherford. As the country manager of Baker Hughes Pakistan he revamped the business and introduced new product lines to the market. He also led several geo-steering and horizontal drilling projects in the Persian Gulf (Total Iran project), and Petroleum Development Oman (PDO).

Joseph Ambah, P.Eng., PMP

Joseph Ambah is currently the Principal Surface Facilities Advisor and Consultant. Has over 25 years experience in the industry and in new systems   development. 

Olu Fasesan, Ph.D

A Director of Drichels Energy. He has a wealth of international experience across four continents in subsurface engineering— reservoir, development, and production engineering. He has worked in variety of roles including: strategy and corporate planning, acquisition and divestiture, portfolio optimization, unitization, asset management, production/field operations, reserves evaluation, reservoir forecasting and optimization, and reservoir/exploitation engineering. Has served as adviser to several top management of oil and gas corporations including the USA Department of Energy. Olu’s experience in North America includes a teaching stint as professor of petroleum engineering at the Texas Tech University. He successfully managed reservoir and production operations of over 140,000 boe /d light and heavy oil production from five different North American assets, was responsible for their development, start-up, optimization, portfolio analysis, upstream valuation, M&A and promotion of value. Furthermore he led several multidisciplinary teams to optimize, design, develop, and construct several conventional and heavy oil projects from initial concept selection to commissioning for green/brown field assets. Olu has a BSc in Chemical Engineering from the Obafemi Awolowo University, Ile-Ife (formerly University of Ife) and a Ph.D in Petroleum Engineering from the Texas Tech University in Lubbock USA. He is a professional engineer; registered with the Association of Professional Engineers, Geologists, and Geophysicists of Alberta, Canada (APEGGA), and the Society of Petroleum Engineers (SPE).