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Management Team

Chief Executive Officer

Mr. Esslemont has 30 years of international oil & gas industry experience in petroleum technology, drilling operations, and general management. Sandy started his career as a petroleum engineer with Shell International and specialized in drilling engineering. His experience led him into drilling rig and turnkey management positions for Forasol-Foramer before becoming a project manager in London with Baker Hughes Inteq. Mr. Esslemont was appointed CEO of Roxar, a Norwegian based oilfield technology company in 2001. During his tenure as CEO Mr. Esslemont delisted the company from the Norwegian Stock Exchange and successfully managed two private equity leveraged buy-outs prior to an eventual relisting of the company on the Norwegian Stock Exchange in 2007. In 2008 Mr. Esslemont became the President, Western Hemisphere for Expro International, a UK publically listed oilfield services firm before leaving in 2009 to become CEO of SensorTran Inc., a venture backed fibre optic sensing technology company based in Austin, Texas.

Following the successful management of a competitive sales process and role of integration consultant to Halliburton, Mr. Esslemont assumed the role of CEO for Abrado Wellbore Services based in Houston in 2012. He has a BSc in Mechanical Engineering from Heriot-Watt University, Edinburgh, is an active member of SPE and currently serves on the board as a non-executive director of Varel International, a global drill bit manufacturer.


Chief Financial Officer

Mr. Gilley started his career as an auditor with KPMG. After KPMG, he joined the Friedkin Companies, the holding entity for a multi-billion dollar portfolio of privately held companies which includes its flagship company, Gulf States Toyota. While at the Friedkin Companies, Mr. Gilley worked as an internal consultant before being selected for the company’s management training program. While in the program, he worked on a variety of high profile projects while rotating through the internal audit and treasury departments.

Mr. Gilley joined Abrado as the Controller in May of 2012. He is a CPA and has a Master of Business Administration from Rice University. In addition, he is a graduate of Texas A&M University where he holds a Bachelor of Accounting and a Master of Management Information Systems.


Senior Vice President - Operations

Cary Bowman is the Senior Vice President - Operations for Abrado Wellbore Services. He has over 30 years petroleum industry experience, ranging broadly from the domestic US onshore shale, shelf and deepwater Gulf of Mexico, to international arenas including Canada, Mexico, South America, North Sea, the Middle East and the Far East.

Prior to joining Abrado in 2016, Cary held various management positions within the oilfield service sector for Deltide, Baker Hughes, BJ Services and Tam International. In addition, he also worked with Amerada Hess and Kerr McGee, where he was focused on the installation of deepwater intelligent well technologies.
Cary received his BS in Petroleum Engineering from the University of Texas.


Senior Vice President of Technology Development

Dave Ruttley is Vice President of Technology Development for Abrado Wellbore Services. He has over 35 years petroleum industry experience and was employed by Deltide since 1981.

Dave has numerous patents for the design of tools and equipment specific to the fishing, rental tool and plug and abandonment sectors, Dave served as Vice President of Operations for Deltide since March 2003, he has worked as a Fishing Tool Operator and Operations Manager. In addition, Dave has worked for Pioneer Fishing Rentals and Bay Drilling Corporation, both located in Houma, Louisiana, as a Derrick Man and Relief Driller.


Senior Vice President of Sales and Marketing

Jason Parrish is the Vice President of Sales and Marketing for Abrado Wellbore Services. Jason is second generation oilfield and has over 22 years of experience in petroleum related industries, from operations on the shelf and in deep water Gulf of Mexico, to Alaska and international markets. Prior to joining Abrado in 2016, Jason held various service, sales and management positions within the oilfield services sector for Deltide, Halliburton, Momentum Asset Management & TAM International.

Jason holds several US patents for BOP test tools, is a published author of numerous technical papers and won the Woelfel Best Mechanical Engineering Design Achievement Award in 2009. Jason was also recognized for the “Best Drilling Technology Award” by World Oil in 2010. Jason received his MBA from the University of Texas & BS in Business from Sam Houston State University. Jason also holds a U.S.C.G. uninspected passenger vessel license.


International Commercial Director

Donachie joined Abrado as International Commercial Director in 2016. He is a British national with 20 years’ experience in the oil & gas industry. Donachie brings a mix of technical and commercial skills to Abrado and will focus on the international growth of the Company.

He has a broad and deep international technical and managerial experience developed through a career with CAMCO, Schlumberger, Helix-RDS and Omega Completion Technology. His technical experience covers wellbore equipment design, manufacture, and operational delivery.

Donachie also brings extensive global commercial experience through senior leadership roles with Pareto Securities and Simmons & Company where he focussed on strategic advisory, commercial and technical due diligence and technology financing and merger and acquisition transactions for a broad range of oilfield service companies and energy specialist private equity and venture capital companies.

Donachie is a career spanning volunteer for the Society of Petroleum Engineers and has been involved in the creation of a broad range of initiatives targeting the development of young professional talent in the energy industry. His volunteer efforts resulted in an appointment to the SPE International Board of Directors as North Sea Regional Director from 2008-2010. He also holds a BS Mechanical Engineering degree from the University of Aberdeen.


Technical Manager - Displacements

Michael (Mike) Rhodes has over 40 years’ experience in the Oil and Gas Industry. He started his career as a roustabout offshore for Noble Drilling. Mike continued working evening tower for drilling contractors working his way up to Derrickhand while attending college. At age 21 Mike joined NL Baroid as a mud engineer working both on and offshore. He eventually became a consultant forming his own company and working for other consultant groups amassing over 20 years in the mud business. Mike took a job at Tetra Technologies to focus on ‘drill in” fluids but quickly was converted to working completion fluids. He spent 10 years at Tetra focused primarily on deepwater completions. It was during this time that Mike developed many of the techniques employed by many completion fluid companies today.

Mike left Tetra to start his own consultant firm UltraDeepWater Consultant group. While at UltraDeepWater, Mike participated in breaking dozens of world records in the deepwater completion arena. UltraDeepWater added displacement chemicals to its repertoire as this was the logical progression from its displacement expertise. It was during this time that Mike decided the next logical step would be to add wellbore cleaning tools to the menu as they worked hand in hand for a successful displacement. UltraDeepWater formed an alliance with Abrado to provide this triple threat of Engineering, Chemicals and Wellbore Cleanout Tools.