Introduction to Underbalanced Drilling

Course Description

This course covers the integrated technologies involved in underbalanced drilling. Participants will learn the operation of an underbalanced drilling project and be able to make informed selections of the equipment that is required.


  • Objectives, limitations and advantages of underbalanced drilling
  • Selecting the right technique (air, mist, foam, aerated/gasified or single phase)
  • Drilling fluid systems and surface equipment for underbalanced drilling
  • Reservoir studies
  • Completing underbalanced-drilled wells
  • Health, safety and environmental Issues
  • Case studies

Learning Level


Course Length

1 Day

Why Attend

With the increased use of advanced drilling technologies such as underbalanced drilling, it is important to understand how to conduct projects that are both successful and safe.

Who Attends

The course is designed for all personnel involved in underbalanced drilling, including onshore and offshore managers, wellsite engineers, wellsite supervisors and operations engineers.


0.8 CEUs (Continuing Education Units) are awarded for this 1-day course.

Cancellation Policy

All cancellations must be received no later than 14 days prior to the course start date. Cancellations made after the 14 day window will not be refunded.  Refunds will not be given due to no show situations.

Training sessions attached to SPE conferences and workshops follow the cancellation policies stated on the event information page.  Please check that page for specific cancellation information.

SPE reserves the right to cancel or re-schedule courses at will.  Notification of changes will be made as quickly as possible; please keep this in mind when arranging travel, as SPE is not responsible for any fees charged for cancelling or changing travel arrangements.

We reserve the right to substitute course instructors as necessary.

Full regional cancellation policies can be found at the Cancellation Policy page within the SPE Training Course Catalog.


Deepak M. Gala is SME–Well Control Engineering at Shell Upstream Americas. Prior to joining Shell, he was US commercial manager at Weatherford and US well control engineer at Cudd Well Control.

Outside of his duties at Shell, Gala is involved in many industry associations and initiatives with over 15 technical publications. He regularly teaches SPE-sponsored courses and serves on various regional and international SPE committees. Gala was recently selected to be a part of the new SPE Sustainability Committee and SPE International Young Professional Coordinating Committee. He was the first Weatherford employee to receive SPE’s 2008 Outstanding Technical Editor Award for the Drilling and Completion Journal, the first to receive the 2010 International Young Member Outstanding Service Award, and the 2011 Young Engineer of the Year for the SPE Gulf Coast Section.

Gala earned a bachelor’s degree in chemical engineering from Mumbai University, a master’s degree in natural gas engineering from Texas A&M University-Kingsville, and an MBA in finance from Tulane University.

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