DR. ANDREW CHEN has worked with Shell, BP, AJM Petroleum Consultants, Schlumberger and other companies, as a reservoir engineering professional/specialist, and has been responsible for operation reservoir engineering, oil and gas reserve evaluation and resource estimates, economical forecast, and North American unconventional plays, with more than 25 years of petroleum engineering and education experience. As an SME, he specializes in wireline formation test (WFT) design, data interpretation, operational practice, and technical training. During his tenure with Schlumberger Canada, he was responsible for providing a variety of engineering technical support, technical/data interpretation practice including training of operators and clients, troubleshooting tests in problematic reservoirs, and coordinating land and offshore projects for reservoir description and formation evaluation. Dr. Chen has provided consulting services in many Canadian and international companies in reservoir engineering, pressure transient analysis, and regional pressure data interpretation. He has been an instructor with OGCI/PetroSkills LLC for the course of "Wireline Formation Testing and Interpretation," and provides in-house practical WFT interpretation and technical workshops. He holds a PhD in fluid mechanics from the University of Manitoba, Winnipeg, Canada, and is a registered professional engineer of the Association of Professional Engineers and Geoscientists Alberta (APEGA). Before that, he held an academic teaching position for six years in reservoir engineering. Since 2011, Andy has worked extensively on various North American unconventional and semi-conventional plays, from early play evaluation, exploration drillings, production data analysis, early development planning, and portfolio risking and ranking assessment.