Oil & Gas Training
and Competency Development

Discipline Drilling Engineering
Duration5 Days
Delivery Mechanism Classroom
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Well Abandonment - Plug, Abandonment and Decommissioning

This course presents wellbore plug and abandonment (P&A) and well decommissioning concepts, including why and how wells are temporarily suspended and permanently removed from service. Participants learn about basic principles of well integrity, well barrier element (WBE) installation, and WBE verification and acceptance criteria. In addition to Oil and Gas industry guidelines and standards, legislation by various countries, including resulting laws and governmental regulations, are reviewed. Service-company and operator recommended practices are covered, compared and contrasted. The latest P&A technologies, tools, techniques, methods and procedures are discussed and demonstrated through case-history examples. 

  • Agenda
  • Topics
  • Audience
  • Prerequisites
  • Agenda

    Day 1


    • Intro to P&A: The Next Five Years—Drivers; Challenges; Services and Technologies; Activity Levels and Costs
    • Well Integrity and Well Control; Drilling and Primary Cementing; Well Barrier Elements—Casing and Cement 
    • Primary Cementing; Criteria for Successful Cementing; Cement Evaluation; Types of Well Completions 


    Objective: Basic understanding of short- and long-term well integrity, and well-abandonment concepts and terms.

    Day 2


    • Generic Well-Abandonment Overview and Review; Intro to Well-Abandonment Regulations and Guidelines
    • Gas Migration: Consequences, Causes and Control; Cement as a Well Barrier Element (WBE)
    • Perforating; Casing Cutters—Explosive, Chemical and Mechanical; Fishing Tools and Fishing Operations 


    Objective: Review primary-cementing objectives; types of well completions; preventing gas migration; and fishing.

    Day 3


    • Technology-Center Visit: Smith Technology Center—Rankin Road, Houston, Texas (or similar facility if not in Houston); Bit manufacturing plant; IDEAS integrated dynamic engineering analysis system lab; Drilling Tools & Remedial manufacturing plant
    • P&A Technologies: Section Mills; Pipe Cutters; and Single-Trip Cutting, Milling and Under-reaming systems
    • Best Practices: Example P&A Exercise 


    Objective: Present latest technologies, tools, techniques, methods and procedures for permanently plugging wells.

    Day 4

    • Cement and Casing Evaluation Techniques: Caliper, Temperature, Tracer, Noise and Production Logging; Cement Bond/Variable Density Log (CBL/VDL), UltraSonic Imager Tool (USIT), Isolation Scanner Tool (IST)
    • Squeeze Cementing; Cement Plug Placement; and Specialty Cements . . . 
    • Laboratory Visit: Houston Cementing Technology Center (CTC)—Cementing Client Support Lab (CSL) (or similar facility if not in Houston) 


    Objective: Understand remedial squeeze cementing and cement-plug placement as permanent well-barrier elements.

    Day 5


    • Best Practices: Example P&A Exercise
    • Well-Abandonment Legislation, Regulations and Guidelines; Comparison of P&A Requirements. 
    • Best Practices: Example P&A Exercise


    Objective: Review, discuss and contrast world-wide well-abandonment considerations.

  • Topics

    Regulations, standards and recommended practices for plug and abandoment of wells and offshore platforms, concepts of well integrity, well barrier elements, gas migration, cement as a barrier, cutting/severing tools, cement evaluation techniques, secondary cementing, and best practices for plug and abandonment. When held at locations which are accessible to Schlumberger technology centers visits are incorporated into the class.

  • Audience

    Government Regulators; Drilling and Completion Engineers and Technicians; Superintendents, Wellsite Supervisors, and Inspectors. Any person, who designs, plans or manages well drilling, wellbore completion and field operations activities will benefit from this course.

  • Prerequisites

    General math and science skills; Basic to intermediate understanding of oil-and-gas well drilling and cementing operations; wellbore casing and tubular components; well-completion design and installation.

  • Prerequisites

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