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Workover Well Control
Rating: 4.7 out of 5(23 ratings)
462 students

Workover Well Control

Master Workover Kill Methods: 15 solved examples, theory, and field handouts.
Created byMostafa Gamal
Last updated 5/2026
English
English

What you'll learn

  • Define workover killing operations: Reverse circulation, bullheading and lubricate and bleed methods
  • Understand concept behind reverse circulation and apply calculation steps
  • Understand concept behind Bullheading and apply calculation steps
  • Understand concept behind Lubricate and bleed and apply calculation steps
  • Define surface equipment and safety consideration for each killing method

Course content

3 sections15 lectures1h 44m total length
  • Introduction0:23
  • Workover killing overview7:11

    Learn how workover killing replaces hydrocarbons with brine to maintain hydrostatic pressure above formation pressure, and apply methods like reverse circulation, bullheading, and lubricate and bleed with safety and calculations.

  • Reverse circulation method14:00

    Explore the reverse circulation method for reverse killing, detailing surface equipment and the annulus‑to‑tubing flow, advantages in reducing formation damage, and the calculation steps to produce a kill graph.

  • Reverse killing example #114:43
  • Reverse killing example #29:58

    This reverse killing example covers calculating volumes from SSD to crossover and to surface for a tapered tubing and annulus, using kill fluid gradients to equalize pressure.

  • Reverse killing method notes4:05

    Explore reverse circulation well killing, using wire line plugs, managing annulus and casing head pressures with friction losses, applying overbalance, and preparing for bullheading and post-circulation steps.

  • Reverse circulation worksheet0:02
  • Course Handout0:02

Requirements

  • Prior knowledge of conventional killing methods
  • Prior knowledge of hydrostatic pressure, formation pressure and pressure gradients

Description

Mastering well control is the backbone of safe and efficient well intervention. This course, Workover Killing Methods: Theory & Practical Applications, is a comprehensive technical program designed to equip drilling engineers, field supervisors, and well intervention professionals with the precise skills needed to manage wellbore pressures during workover operations.

The curriculum provides an in-depth analysis of the three primary killing strategies used in the field: Reverse Circulation, Bullheading, and the Lubricate and Bleed method. We move beyond basic concepts to explore the complex physics of gas migration, the U-Tube principle, and hydrostatic pressure balance. To ensure you are field-ready, the course features 15 detailed, step-by-step solved examples. These examples simulate real-world rig scenarios, including diverse wellbore geometries, tapered strings, and high-pressure environments.

What You Will Gain:

  • Technical Mastery: Understand the "why" behind each method to select the safest killing strategy for any given scenario.

  • Practical Calculation Skills: Learn to calculate Maximum Allowable Surface Pressure (MASP), hydrostatic increments, and circulation volumes with precision.

  • Industry-Ready Resources: Access downloadable worksheets and handouts designed to mirror professional kill sheets used on-site.

  • Compliance & Safety: All methodologies are strictly aligned with API RP 59 (Recommended Practice for Well Control Operations) and IADC Well Control standards.

Whether you are preparing for an IWCF/IADC certification or seeking to enhance your operational competency, this course bridges the gap between theoretical knowledge and rig-floor execution. Join us to develop the analytical confidence required to lead safe well-killing operations in any environment.

Who this course is for:

  • Fresh petroleum engineers
  • Workover and drilling night and day supervisors
  • Night and senior tool pusher
  • Drilling and completion engineers