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ONLINE: X-mas Trees and Well Heads: Operation and Testing (PRE926)


    Well heads and X-mas trees are very important and critical components of any well. To monitor, test and repair any failed component is critical for the safe operation of the well and will boost production and keep the well out of the ‘inactive wells’ list.

    The main goals of this course are to:
    • Revisit the importance of well heads and X-mas trees and to analyse all the problems that may affect well head and X-mas trees integrity and well integrity as a whole
    • Understand how critical good cementations are to avoid future well heads and well integrity problems
    • Understand SAP pressures, their origin and their impact on safety and well life cycle

    Course Level: Skill
    Duration: 4 days
    Instructor: Antonio Abreu, Luis Remisio, Cipriano Costa

    Designed for you, if you are...

    • A field services or operations foreman
    • A petroleum or production engineer
    • A drilling or completion engineer
    • Oil field technical staff

    How we build your confidence

    • Discussing and analysing how well heads and Xmas trees have a major role in achieving well integrity
    • Correlation between best practices for well construction and well heads integrity, and how they can affect safety and well production issues
    • Focus on SAP pressures registered at well heads, their causes and mitigation
    • Videos , exercises and case studies will be presented

    The benefits from attending

    By the end of the course you will feel confident to:

    • Develop the knowledge relationship between surface (well heads) and downhole
    • Investigate leaks and identify the cause of leaks
    • Determine tubing pressures (based on depth of perfs, density of fluid and BHFP)
    • Investigate SAP pressures based on well pressure monitoring using 2 and 3 pen recorders
    • Explain influence of corrosion models on MAASP pressures and on Well Life Cycle


    Day 1: Introduction: Well Heads and X-mas Trees
    • Operational safety
    • Reservoirs, wells and well heads
    • Problems caused by poor cement jobs
    • Well construction and primary cement jobs
    • Construction of a well from casings to well head
    • Productivity index calculated at well head
    • Well head main functions
    • Practical calculations to determine tubing pressures based on several factors
    • Well head classifications
    • API specification 6A
    • Basic components of a well head
    • Well head installation movie
    • Casing head / casing head function
    • Investigation and discussion of SAP case 1
    • Casing spool / casing spool function
    • Casing hangers
    • Tubing heads and tubing hangers
    • Investigation and discussion of SAP case 2

    Day 2: Continuation of Tubing Hangers
    • Casing spool / casing spool function
    • Casing hangers
    • Tubing heads and tubing hangers
    • Investigation and discussion of SAP case 2
    • Tubing head adapters
    • Typical X-mas tree components
    • Fix chokes and adjustable chokes
    • Flanges (6B and 6BX types)
    • Seals and gaskets
    • Unitised well head
    • The BOP

    Day 3: X-mas Tree Installation, Pressure Testing
    • X-mas tree installation
    • Well head repairs
    • Hydraulic and pneumatic actuators
    • Investigation and discussion of SAP case 3
    • Casing hangers and well pressure control
    • Common pack offs and secondary seals
    • Tubing hangers (cross sections)
    • Tests and leak path determination
    • Unitised well heads
    • Basic rules for pressure testing well heads
    • Test schematics of well heads
    • Movie: testing well head
    • Example of sealing cavity with sealant
    • Basic requirements of a well completion
    • Casing string types
    • Liners, liner hangers and tie back liners
    • Effects of pressure in “b” and “c” annulus

    Day 4: Well Head Repairs, Well Integrity
    • Well head repairs and casing repairs
    • Surface casing corrosion
    • Burst and collapse pressure decline with time
    • MAASP calculations for annulus A
    • Short introduction on material selection
    • Corrosion monitoring tools
    • Cathodic protection
    • Well integrity: safety and operational aspects
    • Constructing a well with integrity
    • Well integrity issues
    • The important of SC-SSSV
    • Well head components and well integrity assurance guidelines
    • Risk management
    • WIMS: well integrity management system
    • Industry standards and guidelines
    • Well integrity drivers and implementation
    • Well integrity envelope
    • Well integrity, annular pressures and well head monitoring
    • SAP wells
    • Investigation and discussion of SAP case 4

    Customer Feedback

    "Excellent material hand book, can be used as quick reference guide at work." - Operation Foreman at ADCO

    "Course and tutor skills are excellent." - Operation Foreman at ADCO

    "This course should be a refresher every year for everyone." - Field Services Foreman at ADCO

    "Subject and presentation, the whole course was interesting due to matching with my job." - Foreman at ADCO



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