Artificial Lift

ABOUT THE COURSE:The course contains the oil and gas pumping mechanism when the reservoir pressure is low, and it is required to enhance production using artificial means. The wellbore can have liquid loading problems, or fluid can have higher viscosity or corrosive chemicals, and the pumping of such wellbores needs special attention. Through this course, the students will learn different artificial lifts such as sucker rod pumps, electrical submersible pumps, gas lifts etc. After completing the course, the students will be able to size and select an artificial lift for a specific wellbore.INTENDED AUDIENCE: Senior Undergrad or PG Petroleum, Mechanical and Chemical engineering studentsPREREQUISITES: Basic knowledge of fluid mechanics, completed at least 2nd year in Engineering.INDUSTRY SUPPORT: ONGC, Upstream, Baker Hughes, O&G companies

Week 1: Introduction to oil and gas, drilling and well completion, oil and gas fluid properties and units. Week 2:Wellbore flow fundamentals, density and viscosity correlations, sanding, liquid loadingWeek 3:Inflow performance relationships, multiphase flow. Week 4:Overview of artificial lifts, selection criteria of artificial lift systems. Week 5:SRP (or beam pump) systems, surface and subsurface equipment, power requirements, rod design and selection, design calculationsWeek 6:Pump fillage, Gas lock, fluid pound, problems in SRP. Week 7:Progressive cavity pumps system, surface and subsurface equipment, stage calculations, viscosity effect, elastomeric and metallic PCP concept, power requirement, design calculationsWeek 8:Electric submersible pumps (ESPs), impeller, diffuser, stage calculation, NPSH, Performance curves.Week 9:ESPs: Design of surface and subsurface equipment, protector, motor, cable, stage calculations, design calculations.Week 10:Gas lift system, valves, valve opening sequence, surface unit, plunger lift, design calculations. Week 11:Hydraulic jet pump fundamentals, hydraulic engine pump, design calculationsWeek 12:Surface pumping unit for Jet pump, Surface compressor for gas lift.