Description
Description
This course is designed to provide an in-depth exposure to Artificial lift design-theory
and practice especially for Continuous Flow Gas Lift and Electrical Submersible Pump
(ESP). The course can also be modified for a five day exclusive ESP Training program
with hands on problem solving using the Software called SubPUMP. In either case,
adequate number of class problems are solved in the class workshops. Class problems
from the attendees are always welcome.
Topics Covered
Day 1-2:
Topics covered: Overview of artificial lift technology
• Production Systems Analysis
o Production System Components
o Systems Graph
o Artificial Lift Methods and application of ESP and Gas Lift
o Criteria for selection of artificial lift system
• Multiphase flow in vertical and deviated wellbores
o Pressure gradient calculation methods
�� Correlations and selection criteria
�� Application in ESP Design : ESP Intake Curves
�� Application in Gas Lift Design
• Commonly used Inflow Performance Relationships (IPRs)
• Fluid PVT properties and their effects on ESP and Gas Lift performance
Day 3: (optional and can be replaced with ESP Design Problems and workshop)
• Gas Lift Design:
o Different Types of Gas Lift Valves and their operation and setting
o Gas Lift Valve Spacing for Universal Design
o Optimization of Gas Lift systems
o Workshop: Perform Software to design Gas Lift System
o Trouble shooting of Gas Lift Systems: important aspects
Day 4
ESP Design:
• System (Nodal ) Analysis and Artificial Lift Review
o Pressure and Head determinations
o TDH Calculation method
o PVT Data needed for accurate design calculation
• Steps necessary for an Optimum ESP installation
• Critical Operating Conditions (how parameters like viscosity, water cut, and free gas
at pump intake affect the pump performance)
• Pump and motor curves
• Practical Considerations:
o Gas interference and free gas separation methods
o Variable speed: effect on productivity
o Importance of Fluid level data analysis on Pump performance
• Overview of SubPUMP™ Software
• Required Information and data to set up a base case for ESP design
• System Preferences options used in SubPUMP™
• Well system Components and operating conditions
• Selecting best correlations for fluids and wellbore
• Steps to select equipment based on industry best practices
• Viscosity calculation and it’s effect
• Gas interference in pump performance and handling
• Setting design criteria:
o Pump Intake Conditions (the user enters design rate and pump depth. The
program calculates pump intake conditions
o Total Fluid Rate (the user enters pump intake conditions like Intake Pressure,
fluid level / fluid over the pump and pump depth. The program calculates Total
Fluid Rate
o Pump Depth (the user enters total fluid rate and one intake condition. The
program calculates pump depth)
• Sensitivities to compare multiple vendors and operating parameters
• Explanation of all Output Reports and Graphs
Day 5
.
• Problem Set. Design and analysis of ESP installations are illustrated with several cases to
familiarize the user with the analysis modes and data entry process.
• Calculation of required TDH for desired total rate: design process to find the required
TDH, pump intake conditions for a design rate. Illustrate the process of the selection
of pump, motor and cable. Consideration of motor slip.
•
• Solving for pump depth: design an ESP for a deviated well. Find optimum depth to
install the ESP. Study the effect of compressed gas in stages and gas going back to
solution, use of viscosity calibration and viscosity correction factors in the design
process.
•
• Solving for Pump Intake conditions: Use of Vogel corrected for Water Cut IPR, effect
of motor slip, selection of a housing configuration, compressing gas in stages, use of
Sensitivity analysis on pump depth, adding pump derating factors to optimize
performance, motor heat rise calculations.
•
• Analysis method: Use of ‘Analysis’ option for existing ESP installations. Doing
sensitivity on design frequency and pump selection, match current operating
conditions.