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COURSE DURATION: 5 days

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LEVEL: Skill

 

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

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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

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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

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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

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DAILY AGENDA

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Day 1: Introduction: Well Heads and X-mas Trees

• Operational safety

• Reservoir characterisitics: formation type, permeability, porosity

• Darcy;s Law

• 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

• nvestigation and discussion of SAP case

• Casing spool / casing spool function

• Casing hangers

• Tubing heads and tubing hangers

• Well production based on Darcy’s Law for radial flow.

• Tubing size requirement based on IPR (inflow from reservoir) and TPC (Tbg perform curve)

       

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

• Control Panels (operation and troubleshooting)

• 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

• Corrosion logging (with field examples)

• Cathodic protection

• Well integrity: safety and operational aspects

• Constructing a well with integrity

• The importance of SC-SSSV (types :slickline retrieval and tubing retrieval).

• The  control line.

• 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

• Fundamentals of well testing

• Daily monitoring of each well  is a must (WHP, GOR, Water Cut)

• How to minimize sand and fines production in sandstones  ( the importance of proper choke operation to avoid formation damage).

• Chemicals used  in Well Heads for Hydrate inhibition (mainly before slickline operations)

• Well Head Towers: safe operation, oil & gas well tests using separators, collection of samples, recording production rates readings, maintaining pig launchers and receivers, regular maintenance and planning for major maintenance.

     

Day 5: Well Completions

• Artificial Lift systems ( ESP, PCP, Gas Lift, Rod Pumps,Jet Pumps)

• How to select the required Artificial lift system

• Wireline and Slick line work

• Workovers: rigless and with rig

• Introduction to HWO (Hydraulic Workover unit)

• Pigging Operations: safety issues, operational procedures.

• Hot Oiling: when is required.

• Coiled Tubing: an important tool with multi-applications ( stimulation, scale removal, fishing, well logging, etc)

 

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INSTRUCTORS:

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