Well Completion Design and Management

Introduction

In the development of a hydrocarbon reservoir, many wells are drilled and required to be completed, to allow the structure to be depleted. However, the drilling and completion operations are crucial to the long-term viability of the wells in meeting the specified objectives. The design and completion of both production and injection wells are required to satisfy several objectives including:

• Provision of optimum production/injection performance.
• Ensure safety.
• Maximize the integrity and reliability of the completion over the envisaged life of the completed well
• Minimize the total costs per unit volume of fluid produced or injected, i.e.
• Minimize the costs of initial completion, maintaining production and remedial

This training course will feature:

• The main functions of completion
• Developing a high-level completion strategy for wells in a variety of situations
• Select tubing, packers, and completion flow control equipment
• Understand different sand control techniques and their application

Objectives

By the end of this training course, participants will learn to:

• Evaluate for a given reservoir scenario the bottom hole completion options and make a recommendation based on well integrity and reservoir management requirements
• Identify, evaluate and recommend functional capability of completion strings for a variety of situations
• Describe the purpose and generic operating principles for major completion equipment components
• Identify the limitation of well completion schematically designs and potential failure mechanisms/operational problems with equipment
• Assess well safety requirements and capabilities inherent in well design
• Describe the integration of the various stages of completing a well
• List and flow chart a general procedure to run a completion string
• Describe the requirements to pressure test and retain well control throughout the completion process
• Define the need for full and accurate reporting and records to be kept

Training Methodology

The course is delivered in a combination of lecture-style and computer-based training. In addition, a significant amount of time is set aside for small working group activity when addressing case study problems. Extensive use is made of case study material to underline the key aspects of the course and to give the delegates exposure to current best practice.

Who Should Attend?

This training course is suitable for a wide range of professionals but will greatly benefit:

• Asset Managers
• Petroleum Engineers
• Production Technologists
• Production Personnel (Production Operators, Maintenance Supervisors)
• Drilling and Well Servicing Personnel (Drilling Manager, Drilling/Well Engineers, Completion and Well Service Engineers, Drilling Supervisors, Rig Manager, Toolpusher, Drillers)

Course Outline

Day One: Well Completion Design, Practices and Strategies

• Introduction of Reservoir Drive Mechanism
• Introduction to Artificial lift methods and their application.
• IPR and Productivity Index
• Vertical Lift Performance
• Well Outflow and Inflow Systems
• Typical Vertical Lift Performance (VLP) for various Tubing Sizes
• Matching VLP curves with an IPR curve
• Well Completion Design Considerations
• Reservoir Considerations
• Mechanical Considerations
• Classification of Completions

Day Two: Lower & Upper Completion String Components & Selection Consideration

• Production Packer functions
• Packers Types
• Packers Generic Mechanisms
• Permanent and Retrievable Packers
• Locator Seals and Anchor Seals
• Applications for Permanent and for Retrievable Packers
• Setting Packers
• Inflatable Packer applications
• Sliding side door function
• Gas lift mandrel
• Running the completion
• Perforation methods and perforating equipment
• Perforation selection and conveying methods

Day Three: Wellheads/Sub-Surface Safety Valves & Flow Control Equipment

• Wellheads components, function, and types
• Subsurface safety valves function
• Safety valves types
• Setting depth of subsurface safety valves consideration
• Surface control subsurface safety valves.
• Flow control devices
• Nipple profile types and plug selection.
• Workover reasons.
• Well killing operations technique and consideration
• Example for workover operations (Gas lift wells, Natural gas well, ESP well )

Day Four: Overview of Sand Control Completion

• Sandstone Formation Properties and Geology
• What causes Sand Production?
• Consequences of sand production downhole and on surface
• What is the mean of sand control?
• Perforation system for non-sand control completion
• Sand control options
• Chemical Consolidation
• Mechanical sand control methods
• Cased Hole Gravel Pack
• Open Hole Gravel Packing
• Expandable Screens
• Gravel Pack Design, Gravel Sizing, and Slot Sizing
• Placement Methods
• Carrier Fluid Concept
• Choosing the appropriate method of Sand Control
• Losses controlling during sand control operations
• Perforating system for sand control.
• Standalone screen applications

Day Five: Fundamentals of Rigless Operations Theory & Stimulation

• Coiled Tubing surface and subsurface components
• Coiled Tubing applications
• Cleaning operations with CT
• Well backflow (nitrogen lift)
• Wireline types and application
• Surface and subsurface components of a wireline
• Formation damage mechanisms and their remediation
• Stimulation design considerations
• The most important production logging (PLT)
• Well barrier philosophy during well interventions