well intervention, or well work, is any operation carried out on an oil or gas well during, or at the end of, its productive life that alters the state of the well or well geometry, provides well diagnostics, or manages the production of the well.


Course Title: Wellhead operation and maintenance

Course Description:

This comprehensive course on Wellhead and Maintenance Fundamentals is designed to provide participants with a thorough understanding of the critical components involved in the operation, maintenance, and troubleshooting of oil and gas wellheads. Wellheads play a pivotal role in the exploration and production of hydrocarbons, making it essential for professionals in the industry to grasp the intricacies of their design, installation, and ongoing upkeep.

Key Learning Objectives:

1. Wellhead Components and Types:

   Explore the various components that constitute a wellhead system, including casing heads, tubing heads, and Christmas trees. Understand the differences between conventional and advanced wellhead designs and their applications.

2. Installation and Configuration:

   Gain insights into the proper installation and configuration of wellhead systems. Learn about the considerations for site selection, casing design, and the role of various tools and equipment in the installation process.

3. Wellhead Operation and Control:

   Delve into the operational aspects of wellheads, covering topics such as pressure control, flow regulation, and safety measures. Understand the role of control systems and how they contribute to efficient wellhead management.

4. Maintenance Best Practices:

   Explore the key principles of wellhead maintenance, including routine inspections, preventive measures, and troubleshooting techniques. Gain practical knowledge on addressing common issues and challenges encountered in wellhead systems.

5. Safety Protocols and Regulatory Compliance:

   Emphasize the importance of adhering to safety standards and regulatory requirements in wellhead operations. Understand how to implement and maintain a culture of safety within the context of wellhead activities.

6. Environmental Considerations:

   Examine the environmental impact of wellhead operations and explore sustainable practices. Learn about spill response procedures, environmental monitoring, and industry initiatives aimed at minimizing ecological footprints.

7. Emerging Technologies in Wellhead Management:

   Stay abreast of the latest technological advancements in wellhead systems. Explore how digitalization, automation, and remote monitoring contribute to enhanced wellhead performance and maintenance efficiency.

8. Case Studies and Practical Applications:

   Apply theoretical knowledge to real-world scenarios through case studies and practical exercises. Develop problem-solving skills and decision-making abilities in the context of wellhead operations.

This course is ideal for professionals in the oil and gas industry, including engineers, technicians, and managers involved in wellhead operations and maintenance. By the end of the course, participants will have acquired a comprehensive skill set to effectively manage wellhead systems, ensuring operational efficiency, safety, and environmental responsibility.



In oil and gas exploration, the term wireline broadly defines industry-specific methods, processes, and technologies that lower cables and wires into a wellbore. Wirelines are strong, thin lengths of wire or braided cable mounted on a powered reel. Typical wireline applications affix “logging tools” or instruments to a cable rigged to drilling platforms or trucks that, once attached, is lowered by the cable into oil well holes or natural gas reservoirs to perform diagnostics or to gather and transmit data. As a general descriptive term, wireline is also used interchangeably to describe the processes, techniques, cabling technologies, and systems used to conduct wireline operations.



Coiled Tubing (CT) is a continuous length of small-diameter pipe that is spooled onto a reel in the same way as wire or cable is wrapped on a drum. The coiled tubing operation permits the technique of “snubbing” a continuous length of tubing in and out of a live well through a stripper BOP arrangement. The main advantage of Coiled Tubing is that it can be run into producing wells, against high wellhead pressures (e.g. 345 bar / 34,500 kPa or 5000 psi), and down past the perforations, without production interruption or killing the well (Wait and Weight – Driller’s Method). The most common pipe size in use is 1.5″ through to 2.875″, although larger sizes are available and used.