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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:

Antonio Abreu is a Senior Petroleum Engineer with a M.Sc. in Mechanical Engineering from the University of Lisbon, Portugal. Antonio has over 40 years’ experience in oilfield production technology. He performed extensive work in the areas cementing, stimulation, well integrity, CT operations, well testing, slickline operations, wireline operations, reservoir monitoring and optimization, gas lift operations, production logging, perforation operations, sand control, water and gas shut off, etc. He started his career in April 1979 with Dowell Schlumberger in France. Further assignments included positions as Assistant to Technical and Marketing Manager (DS/Singapore), Offshore Manager / Cementing Services (DS/Libya), General Services Supervisor (DS/Algeria), Assistant Operations Manager/Aktau/Kazakhstan (Partex), Senior Petroleum Engineer (ADCO/Bu-Hasa Field) and Senior Petroleum Engineer (Dragon Oil Dubai and Turkmenistan).

Antonio is an experienced lecturer of many industry training courses in the areas of Petroleum and Production Engineering and was also assigned during several years as instructor at BTC (Dowell Schlumberger Training Centre, Santa Cruz de la Sierra/Bolivia). The last four years he was working as Training Consultant in UAE. He is a Partner Founder of OGExperts.

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Luis Remisio: Mining Engineer (IST, Lisboa), Petroleum Engineer (IFP, Paris), Leadership Certificate in (Ashridge, UK). 43 years of experience in the industry of Oil and Gas in 7 countries (Angola, United Kingdom, Australia, Zaire, Portugal, United Árabe Emirates and Kazaquistan in the areas of Safety of Operations, Technology of Production, Surveys, Conceptual Project of Surface Instalations, Development/Training of Technitians and Technical and Finance Management.

He teaches Oil, HSE and Leadership courses. He is a Partner Founder of OGExperts.

 

Cipriano Costa: Masters in Chemical Engineering  –  Petroleum Refining & Petrochemistry-FEUP Porto, (1978). Worked in the Lubricants refining plant of Petrogal and in several countries around the world (Libya, Algeria, United States, Middle East, North Sea and Central Africa) with Halliburton Corporation, having performed several duties in almost all technical areas of the Oilfield both Onshore and Offshore and also PDC (Personal Development Coordinator), BDM (Business Development Manager) and Technical Advisor for Completions.

Has post-Graduation in Petroleum Engineering by University of Texas – Austin.

He is a specialist in Fracturing, Chemical Stimulation, Cementing and Completions.

He is a Partner founder of OGExperts.

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