Underbalanced Drilling

Society of Petroleum Engineers 

Continuing Education Short Course Offering
2007 Rocky Mountain Symposium

Introduction to Underbalanced Drilling

Instructor:                     Steve Nas, Weatherford Asia Pacific Petroleum Ltd

Date:                             Sunday, April 15, 2007, 8:00 AM to 5:00 PM

Location:                       Hyatt Regency Denver at the Colorado Convention Center
                                      650 15th St
                                      Denver, CO 80202-4207, US

0.8 CEUs (Continuing Education Units) will be awarded by SPE-Americas Office for this 1-day course.

 Course Description
With the increased use of advanced drilling technologies such as underbalanced drilling, there is a need to train all personnel to ensure that the project is completed safely and successfully. Upon completion of this course, registrants will have knowledge of the integrated technologies involved in underbalanced drilling operations; understand the operation of an underbalanced drilling project; and be able to make an informed selection of all equipment required to carry out an underbalanced drilling operation.  

Course Contents

  • What is underbalanced drilling?
  • Objectives of drilling underbalanced
  • Technique selection
  • Drilling fluid systems
  • Reservoir studies
  • Surface equipment for UBD operations
  • Completing underbalanced drilled wells
  • HSE Issues
  • Limitations
  • Advantages of underbalanced drilling
  • Costs
  • The future
  • Case histories

Who Should Attend
The course is designed for all personnel involved in underbalanced drilling operations, including on and offshore management, wellsite engineers, wellsite supervisors and operations engineers involved in the project.

 About the Instructor
Steve Nas
holds a BSc degree in electronics from the MTS in Nijmegen, Hollandand an MSc degree in drilling engineering from The Robert Gordon University in Aberdeen. His oilfield career started in 1977 as a mudlogger in Iranand Egyptfor 3 years. He progressed into a wellsite drilling engineer’s role in 1980, working throughout the Middle Eastand Africafor the next 8 years. In 1994 he joined Prodrill as Engineering Manager in Aberdeenbefore Smedvig Offshore acquired Prodrill in 1996. Nas then went back into the field as Underbalanced Drilling Engineer and has since then drilled a number of UBD wells offshore and onshore and has been involved as a consultant in numerous feasibility studies for underbalanced operations. He joined Leading Edge Advantage in 2000 as Technical Director, initially looking after the Buchan underbalanced drilling project as well as drilling a number of UBD wells for other clients. In 2001, he was the project manager for the BP Colombia underbalanced operations in their Cusiana and Cupiagua fields. Nas was a SPE Distinguished Lecturer on Underbalanced Drilling Technology from 1999 to 2000. He is also a lecturer on advanced drilling technology at The Robert Gordon University in Aberdeen.


The registration deadline is March 23, 2007 .  The registration fee is $450.00 and is fully refundable until that time.  For more details, contact Darien O’Brien, P.E. at dgobrien@forestoil.com or (303) 864-6015.  Make your check payable to SPE Denver Section and mail to: Darien O’Brien, Forest Oil Corporation, 707 Seventeenth Street, Suite 3600 , Denver , Colorado 80202.  Please include the course name, your FULL name (as you would like it to appear on the course completion certificate), SPE member number (if applicable), Title, Company, e-mail address, postal address, phone and fax number.

Name Sales End Price
Member Ended $450