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Advanced Gas Lift - Design & Troubleshooting Training
Current Course Schedule:
| Location |
Dates |
Price |
Type |
Register
Online |
Register
Offline |
| On-Site |
Flexible |
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On-Site |
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Objective:
Stated quite simply, the objective of this course is to provide the most advanced and comprehensive gas lift design and diagnostics training package available to the industry. The course provides a comprehensive review of common gas lift techniques and concentrates on the downhole aspects of gas lift performance and diagnostics. It also emphasizes emerging technology in the form of actual gas lift valve performance and dynamic gas lift simulation, which advance the practice of gas lift from a black art to a true engineering discipline. The course is targeted toward engineering staff involved in the design, performance, and monitoring of gas lift installations. While previous experience or knowledge of gas lift are not prerequisites, students are expected to be familiar with the basic principles of well modeling and nodal analysis. The course will also prove valuable to experienced gas lift engineers who would benefit from exposure to some of the newer methods currently being developed and tested by the industry.
Course Description:
The course begins with a quick overview of production systems analysis and justification of gas lift as a means of increasing well productivity, followed by an introduction to gas lift principles, surface installations, and downhole equipment. The three basic elements of continuous gas lift design are covered thoroughly: operating valve positioning, unloading valve positioning, and valve sizing. Actual, detailed valve performance is examined, with an overview of methods and techniques used to predict valve behavior under actual flowing conditions. This forms the basis for modeling and analyzing problematic gas lift behavior using DynaLift™ software, a proprietary software developed by Weatherford in association with Decker Technologies. Other topics covered in the course include gas lift operations, multi well lift gas allocation, and optimization, as well as a special section devoted entirely to intermittent gas lift.
Course Contents:
- The Production System
- Reservoir inflow performance
- Vertical lift performance
- Pressure traverse
- Operating point
- Nodal analysis
- Justification for gas lift
- Introduction to Gas Lift
- Principles of gas lift
- Overview of gas lift installations
- Introduction to gas lift valves
- Gas lift completions
- Gas Lift Design: Positioning the Operating Valve
- System design/sensitivity analysis
- Gas lift performance: reservoir/completion/lift gas parameters
- Worst case and expected case designs
- Gas Lift Design: Positioning the Unloading Valves
- Valve spacing
- Fluid and casing controlled valves
- Transfer margins
- Shut in fluid column
- Gas Lift Design: Valve Sizing
- Simple force balance model for valve operation
- Dome pressure setting
- Manufacturers' valve data
- Test rack opening/closing pressures
- Temperature adjustments
- Valve spread
- Valve Performance
- Dynamic flow testing
- Gas throughput operating point
- Valve performance curves
- Valve performance modeling
- Gas throughput operating point
- Sensitivity: port size, gas rate, cas/tbg pressures
- Gas Lift Operations
- Unloading procedures
- Running tools/mandrels
- Gas conditioning
- Gas compression requirements
- Lift Gas Allocation & Production Optimization
- Prerequisites for lift gas allocation and optimization
- Well performance curves
- Multi well networks
- Manual lift gas allocation example
- History matching and tuning to field data
- Non hierarchical networks
- Gas Lift Troubleshooting
- Dynamic gas lift simulation
- Pressure instabilities
- System response to lift gas variables
- Cycling and multi pointing
- System response to changing reservoir behavior
- Intermittent Gas Lift
- Intermittent gas lift installations
- Fallback
- Valve positioning
- Plunger assisted intermittent gas lift
- Chambers
- Regulating IGL
- Intermittent gas lift troubleshooting
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