Offshore Drilling and Production

About this Course

Water covers over two thirds of the earth’s surface. Consequently, oil and gas are produced not only on land, but also offshore, at sea. However, offshore production is far more technically demanding,more than production on shore. This is due to the fact that, platforms are normally required in order to reach the reservoirs beneath the seabed and in order to carry out drilling and production operations. These drilling rigs and production platforms are among the most extreme work environments in the world. Oil and gas staff, who work there can only have access to their workplace through helicopter or supply ship and live on the platform for many weeks at a time, ensuring that production or drilling proceeds undisturbed day and night. However, those who work on these platforms, and the materials, must be able to withstand the worst possible weather conditions and meter-high waves.

Prior to production, a well must be drilled to reach the reservoir, as like onshore. Offshore drilling is a term used to describe drilling activities on the continental shelf, although it can also apply to drilling in lakes, and inland waters in general.

Special mobile drilling platforms can be used to do this. At the end of drilling, the platform is removed, and the production platform is installed over the drilled wellbore. Oil and gas are transported from the borehole to the platform through pipelines, where, they are then treated before being transported either directly to land through pipelines or loaded unto ships. Since platforms in shallow waters are very different to platforms used in deep waters, the type of platform used, therefore depends on the water depth.

As soon as the exploratory drilling phase is over, geologists determine if a petroleum reservoir is worth the massive expenses involved, oil companies, then prepare for the establishment of an offshore production platform.

In this module you will learn more about Offshore Exploration, Rotary Drilling, Offshore Drilling Structures and Equipment, Fixed platforms, Compliant towers, Semi-submersible platform, ack-up drilling rigs, Drillships, Floating production systems, Tension-leg platform, Gravity-based structures, Spar platforms. You will also learn what directional drilling is and why directional wells are drilled.You will as well learn about different kinds of directional wells and what typical directional wellprofiles look like. This module also introduces well plans and planning and the components of awell that are described on the well plan.




Course Objectives


At the end of this course, you will learn / be able to: 

  • Offshore Oil/Gas Drilling and Production Systems
  • Define directional drilling
  • Recall the historical development of directional drilling.
  • Recognize the reasons for drilling the following types of wells: exploration, appraisal, development/production.
  • Identify descriptions and pictures of directional drilling applications.
  • Identify several features of a directional well profile.
  • Identify the general types of directional well profiles.
  • Recall an explanation of a well plan by choosing an answer from a list of selections.
  • Identify the basic components of a well plan.
  • FPSO
  • Subsea Structures
  • Subsea Technology
  • Oil Recovery Systems - Primary, Secondary, Enhanced etc.
Course CodeUNN/OC/0039
Course Start DateStarted
Course Duration3 Months
Dedication4 Hours per week
Number of Modules6
School offering courseUNN Online School of Oil and Gas
Video/Audio MediaNone
Course Fee450000.00

  Naira (₦)      US Dollar ($)    

Diploma Certificate

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Course Lecturers

Associated Programs

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UNN Online Program

Offshore Operations (Drilling and Production)

This program teaches the unique offshore environment, complex technology and equipment as well as safety and environmental challenges that must be undertaken and overcome in deep water exploration, production, processing and transportation.

Program Courses: 8

Course Prerequisites / Requirements

Graduates of Universities are eligible to register for Post Graduate Diploma programs, and complete/pass all the modules. NCE and HND holders with a minimum of 3 years working experience, especially in the petroleum industry will be considered. WAEC holders or equivalent, can enroll and do as many individual modules as they wish.