The Association is governed by its Board of Directors, comprised of employees of Drilling Contractor member companies who are elected annually. Responsibilities include confirming annual appointment of IADC’s Officers, reviewing significant organizational changes, and approving annual budget.
The Executive Committee consists of up to 21 Directors and leads the overall direction of the Association, including objectives, structure and operations, making recommendations to the Board of Directors as needed.
Advisory Panels are formed to evaluate issues affecting Members and report those issues to the Executive Committee for consideration and action.
IADC Officers & Executive Committee
2022 IADC OFFICERS
JEREMY THIGPEN, CHAIR
Mr. Thigpen joined Transocean as the company’s CEO in April 2015. He previously served as Senior Vice President and Chief Financial Officer at National Oilwell Varco, where he spent 18 years. During his tenure at NOV, Mr. Thigpen spent five years as the company’s President of Downhole and Pumping Solutions business and four years as President of its Downhole Tools group. He also served in various management and business development capacities, including Director of Business Development and Special Assistant to the Chairman. Mr. Thigpen earned his Bachelor of Arts in Economics and Managerial Studies from Rice University and completed the Program for Management Development at Harvard Business School.
ANDY HENDRICKS, VICE CHAIR
Mr. Hendricks has served as President and Chief Executive Officer of Patterson-UTI since October 2012 and as a director of Patterson-UTI since June 2017. From April 2012 through September 2012, he served as Chief Operating Officer of Patterson-UTI. From May 2010 through March 2012, Mr. Hendricks served as President of Schlumberger Drilling & Measurements, a division of Schlumberger. Prior to that date, Mr. Hendricks worked for Schlumberger in various worldwide locations and capacities since 1988, including serving in numerous executive positions since 2003. Mr. Hendricks is a past Chair and member of the Executive Committee for the International Association of Drilling Contractors and a member of the Society of Petroleum Engineers. Mr. Hendricks holds a Bachelor of Science in Petroleum Engineering from Texas A&M University.
R. H. “BOB” GEDDES, PAST CHAIR
Ensign Energy Services
Mr. Geddes has been with Ensign since 1991 and is currently the President and Chief Operating Officer of the Corporation, a position he has held since 2007. He has acted as Vice President Canadian Drilling from 1999 to 2004 and President Canadian Operations from 2004 to 2006.
He is a past Chairman of the Canadian Association of Oilwell Drilling Contractors (CAODC), and is a member of the Association of Professional Engineers and Geoscientists of Alberta (APEGA). He holds a B.Sc. in Mechanical Engineering from the University of Alberta.
SCOTT MCREAKEN, SECRETARY/TREASURER
Northern Ocean Ltd.
Mr. Scott McReaken was appointed Chief Executive Officer of the Northern Drilling and Northern Ocean Groups in December 2018. Prior to this appointment Mr. McReaken has been a part of the Seadrill group companies since 2012, where he served as Chief Executive Officer and Director of Sevan Drilling Ltd and Chief Financial Officer of North Atlantic Drilling Ltd.
Mr. McReaken has almost 20 years of experience in the offshore drilling industry, which includes various leadership roles in the United States, North Sea, West Africa and South America. Mr. McReaken began his career at Arthur Andersen LLP and is a Certified Public Accountant and Certified Internal Auditor.
He holds a degree in business administration from The University of Texas at Austin and is a US citizen residing in Houston, Texas.
2022 IADC DIVISION VICE PRESIDENTS
ROBIN MACMILLAN, DIVISION VP DRILLING SERVICES
Robin Macmillan attained a degree in Geology from the University of Leeds in England and started his oilfield career drilling in the Rio Grande Valley.
Since then, Robin has worked both offshore and onshore in many countries, including eight years in Latin America. Having joined drill bit company ReedHycalog in 1991, Robin worked in several sales and management positions including the management of Schlumberger Drilling and Measurements in Canada. Robin was appointed as President of ReedHycalog in 2008 and then, following acquisition, Senior Vice President for Business Development at National Oilwell Varco. In 2021 Robin joined Data Gumbo where he is Chief Sales Officer.
Robin has technical publications on drilling automation, drill bit design, managed pressure drilling, high-speed downhole telemetry and digitalization of daily drilling reports. He also holds a patent on drill bit design.
At IADC he is Vice President, Drilling Services, chair emeritus of the Advanced Rig Technology committee and a member of the Drilling Engineers Committee. Robin is also vice chair of the SPE Drilling Systems Automation Technical Section.
MIKE GARVIN, DIVISION VP NORTH AMERICA ONSHORE
Mike Garvin is the Sr. Vice President, Operations at Patterson-UTI Drilling Company. Prior to joining Patterson-UTI, Mr. Garvin worked for Ensco as the Sr. Deepwater Operations Manager overseeing the construction of a fleet of deep-water semisubmersible rigs in Singapore and then starting up and managing operations in various locations around the world. Prior to that, Mr. Garvin spent twenty seven years with GlobalSantaFe and its predecessor and successor companies (Global Marine & Transocean) holding various operations and support leadership positions.
Mr. Garvin earned a Bachelor of Science degree in Engineering from California Polytechnic State University, graduating in 1994. Mr. Garvin has accumulated a total of forty-three years of experience in the upstream sector of the energy business, exploring and drilling for oil, gas & geothermal energy both on land and offshore.
Mr. Garvin has been an active member of the IADC for the past 20 years serving as an Executive Committee Member, North America Onshore Division Chair, Well Control Committee Chair, HSE Committee Chair and DRILLERSPAC Trustee.
BRIAN WOODWARD, DIVISION VP OFFSHORE
Mr. Woodward is the Vice President of Corporate Services at Noble Corporation. In this capacity he manages the company’s Human Resources, Information Technology, Supply Chain, and HSE functions. Mr. Woodward previously served as Noble’s Global Operations Manager and has held various domestic and international roles in Operations, Marketing, Investor Relations, Human Resources, and HSE since joining the company in 2002. In addition to his role as IADC Division Vice President Offshore, he serves on various committees for both IADC and SPE.
Mr. Woodward graduated with a BBA in Management from The University of Texas at Austin and received an MBA in Oil and Gas Management from Robert Gordon University in Aberdeen.
MIGUEL SANCHEZ, DIVISION VP INTERNATIONAL ONSHORE
Nabors Drilling International Ltd.
Miguel is currently the Vice President, International Operations for Nabors.
Miguel has over 25 years of experience in the Oil & Gas industry; he has had the opportunity to work in several geographies around the globe as well as multiple disciplines within the industry. Miguel started his career with BP in Venezuela in 1997 as a commercial analyst before moving to the United States where he held several roles in downstream & Upstream segments for BP; Miguel then moved to the services industry he worked for Key Energy Services, Saxon Energy Services based out of Bogota Colombia, Parker Drilling in USA and UAE; last job before joining Nabors was VP, Weatherford Drilling International In Dubai
Miguel has a Bachelor’s in Business Administration; a Finance Graduate program from Universidad Metropolitana in Caracas, Venezuela and a Master degree from Arthur D’little School Of Management.
2022 Executive Committee
- ANDY HENDRICKS, Patterson-UTI Energy Inc., Houston, Texas
- ANTHONY GALLEGOS, Independence Contract Drilling, Houston, Texas
- BERNIE WOLFORD, Diamond Offshore Drilling, Inc., Houston, Texas
- BRIAN WOODWARD, Noble Corporation plc, Sugar Land, Texas
- BRAD JAMES, Enterprise Offshore Drilling, Houston, Texas
- GENE STAHL, Precision Drilling Corporation, Houston, Texas
- IHAB TOMA, Vantage Drilling, Dubai, UAE
- JEREMY THIGPEN, Transocean Ltd., Vernier, Switzerland
- JØRN MADSEN, Maersk Drilling, Copenhagen, Denmark
- MANAV KUMAR, Dynamic Drilling, Dubai, UAE/Singapore
- MIGUEL SANCHEZ, Nabors Drilling International Ltd., Houston, Texas
- MIKE GARVIN, Patterson-UTI Drilling Company LLC., Houston, Texas
- PAUL MOSVOLD, Scandrill, Inc., Houston, Texas
- R. H. “BOB” GEDDES, Ensign Energy Services, Calgary, AB, Canada
- ROBIN MACMILLAN, Data Gumbo, Houston, Texas
- RODDIE MACKENZIE, Transocean Ltd., Houston, Texas
- ALEXANDER “SANDY” ESSLEMONT, Parker Wellbore, Houston, Texas
- SCOTT MCREAKEN, Northern Ocean Ltd., Houston, Texas
- SHANE MARCHAND, Helmerich & Payne Inc., Tulsa, Oklahoma
- SIGGI MIESSNER, Nabors Industries Ltd., Houston, Texas