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Bob Maguire, Managing Director for CIEP, is focused on further developing and growing Carlyle’s international energy platform. He is based in London.
Recently, Mr Maguire was a Partner at Perella Weinberg Partners, but prior to that worked as an Investment Banker for over 21 years at Morgan Stanley and was involved in many of the largest transactions within the sector.
Mr Maguire holds an AB from Princeton University, an MA from Oxford University, and a JD from the University of Virginia School of Law.
Tony Hayward is the first Chairman of SierraCol Energy since the beginning of the Company in 2020. He is an experienced energy executive and Chairman of Glencore, a Managing Partner of St James’s Asset Management LLP, and Chairman of a number of private companies.
Tony was Group Chief Executive of BP from 2007 to 2010 having joined BP in 1982 as a rig geologist in the North Sea. Following a series of roles overseas he joined the Exploration and Production Executive Committee in 1997. He became Group Treasurer in 2000, Chief Executive for BP’s E&P business and a member of the Main Board of BP in 2003.
Tony studied Geology at Aston University in Birmingham and completed a PhD at Edinburgh University. He is a Fellow of the Royal Society of Edinburgh and a visiting Professor in the School of Geosciences at the University of Edinburgh, and holds honorary doctorates from the University of Edinburgh, Aston University, the University of Birmingham and Aberdeen’s Robert Gordon University.
Partner, Managing Director and General Counsel for Investments
Heather Mitchell is a Partner and Managing Director and Carlyle’s Chief Risk Officer, chairing the firm’s Risk Committee. She is also global General Counsel for Investments and Head of the firm’s EMEA region. She is based in London.
In November 2020, Ms Mitchell was included in Financial News’ list of 50 Most Influential in European Private Equity. In 2019, and again in 2020, Ms Mitchell was named in the 100 Most Influential Women in European Finance by Financial News. In 2019, Ms Mitchell was named in the inaugural Chambers GC Influencers Global 100.
This prestigious list highlights the top 100 most influential in-house lawyers globally, and Ms Mitchell was singled out as an industry pioneer. In 2018 she was named Individual General Counsel of the Year by Legal 500. Ms Mitchell was named in the GC Powerlist for 2018 and 2019 whilst also being selected for The Hot 100 list in 2019.
Ms Mitchell received her JD from the Cornell School of Law and her undergraduate degree from the State University of New York at Binghamton. Ms Mitchell currently sits as a board member of the Cornell Law School.
Eric Faillenet has over 25 years’ experience in the oil and gas industry.
Prior to joining Carlyle International Energy Partners in April 2014, Mr Faillenet was Africa Regional Manager with Perenco, an independent oil and gas company with gross production of over 400,000 boed and operations in 15 countries in Africa, Latin America, the Middle East, the UK and Vietnam.
Mr Faillenet is a graduate of Ecole Centrale de Lyon in France and has an MSc in Electronic Control Engineering from Salford University, England.
On August 15, 2022, Alejandro Piñeros Ospina was appointed Chief Financial Officer of SierraCol Energy.
Before this appointment, Alejandro held CFO and other Financial and Planning positions in multiple organizations, including: Frontera Energy where Alejandro was CFO, VP of Planning, and Finance Director; Banco Credifinanciera (CFO), Puerto Bahia (CFO), Summum (CFO), and Essentia (CFO). Alejandro also worked as a consultant in McKinsey & Company and Booz Allen & Hamilton.
Alejandro holds a B. Sc. In Industrial Engineering from Los Andes University in Bogotá and a MBA in Finance from Columbia University in New York.
On 18 December 2020, Bernardo Ortiz was appointed Chief Executive Officer of SierraCol Energy.
Before this appointment, Bernardo Ortiz completed more than 15 years of successful professional career with Occidental Petroleum Corporation (OXY), performing different positions: Vice-President Business Development for Latin America, Vice-President Planning and Evaluation for OXY USA and OXY Long Beach and Operations Manager of Worldwide Engineering and Technical Services Vice-Presidency.
Bernardo Ortiz completed a BS in Economics at Universidad Externado de Colombia, a Master of Science in Public Policy at the University of London, Queen Mary College, and a Master of Science in Management at the London School of Economics.
In addition, he specialised in Petroleum at the Colorado School of Mines.
In 2019 Ricardo Álvarez was appointed Senior Operations VP for Occidental de Colombia, today SierraCol Energy, LLC, being responsible for the complete operation of the company in the country.
Ricardo joined Occidental de Colombia in 1982 as an intern and during his 39 years of successful professional career he has played important roles in both onshore and offshore operations in Colombia, Ecuador and Qatar, in areas such as project management, artificial lifting, production surveillance, completions engineering, stimulation technologies and sand control techniques.
In 2006 Ricardo assumed the challenge to maximise production while counteracting the natural decline of the Northern Llanos field as Operations VP and in 2010 he was also designated to lead the operations team for the Middle Magdalena Valley.
Ricardo holds a BS in Petroleum Engineering from Universidad Industrial de Santander.
John Bolling is currently the Vice President Operations Northern Llanos (LLN) of SierraCol Energy, responsible for the operation and development of one of Colombia’s largest oil fields.
John has over 35 years of US and international experience with Occidental and ARCO. He joined OXY in 2000 as the Development VP for OXY Long Beach’s operations, oversaw redevelopment of the Bahrain field as the Subsurface Manager for joint venture Tatweer Petroleum, and was the Asset Development Manager for operations in Qatar. He transferred to Colombia in 2018.
John held multiple assignments with ARCO including Group Manager within the Reservoir Research and Technical Services organisation in reserves, multi-discipline studies and technology development. He participated in strategic studies to assess growth opportunities including development of deepwater oil fields, and assessed and implemented a company-wide technology strategy. He was Supervisor of reservoir and operations engineering groups for the Kuparuk River field in Alaska directing miscible flood projects, co-ordinated optimisation of field operations, and led construction of field strategic plans and reserves, and execution of field development activities.
John received his BS in Chemical Engineering from the University of Wisconsin–Madison, an MS in Chemical Engineering from the University of Minnesota–Minneapolis and completed the Anderson School of Management Executive Program at UCLA.
We participate in exploration activities in six blocks in association with GeoPark. They are similar to the most prolific fields discovered across the border in the Oriente basin in Ecuador.
Proximity to existing production facilities and evacuation routes, reducing the time to market.
On 3 June 2021, Horacio Rossignoli was appointed Middle Magdalena Operations VP of SierraCol Energy, being responsible for managing the operation and development of La Cira Infantas, Teca-Cocorná, Bolívar and Bocachico blocks.
Horacio has more than 30 years of experience in the upstream oil and gas industry, predominantly in Argentina, the US and Ecuador.
Horacio has previously held multiple assignments with OXY as VP of Development for OXY Argentina’s assets and VP of Development for OXY Long Beach’s operations, as well as being General Manager of Vintage Oil Ecuador operations and holding several other key roles for Amoco Argentina, Vintage Petroleum, Sinopec Argentina, President Petroleum and Petroquímica Comodoro Rivadavia.
Horacio received his BS in Civil Engineering from the Catholic University of Argentina (UCA), and completed a postgraduate degree in Economic Evaluation of Oil and Gas Projects and the Leadership Training of the Management Executive Program at IAE (Austral University).
On 5 May 2021, Fred Watchorn was appointed Exploration and Business Development VP of SierraCol Energy.
Fred has more than 25 years’ upstream energy experience, predominantly in Colombia, the Middle East and SE Asia.
He joined SierraCol Energy as part of the merger with COG Energy where he was COO and in charge of BD and exploration.
He has previously held key roles in Colombia with OXY, Canacol and Platino and worldwide with Tullow Oil, OXY and Nexen. He has a degree in Geology from University College Dublin, an MSc in Geophysics from the University of Durham and a PhD from the University of London.
On 5 May 2021, Luis Carlos Pabón was appointed Sustainability Vice President of SierraCol Energy.
Since the beginning of his professional career as an intern in 1997, Luis Carlos Pabón held positions of increasing responsibility in different key business areas of OXY: Maintenance and Construction Supervisor, Pipeline and Terminal Team Leader, Joint Ventures Co-ordinator, Security Leader, Supply Chain Manager, Llanos Norte District Field Manager and LCI Project Director.
The diversity of his professional background, along with his multifaceted career of more than 24 years in the industry, provides a comprehensive view to material issues for SierraCol’s ESG approach.
Luis Carlos Pabón is a BS Civil Engineer at Universidad de la Salle in Bogotá, holds an Executive MBA from IE Business School of Spain, specialised in Project Management at EAN University and holds a master’s degree in Petroleum Engineering from Universidad de los Andes, Colombia.
On 15 October 2021, Alejandra Castaño was appointed Human Resources and Administration Vice President of SierraCol Energy.
Alejandra has more than 20 years of experience in human resources at a national and international level.
Before this appointment, Alejandra had a successful professional career with Occidental Petroleum Corporation (OXY), performing positions of increasing responsibilities such as HR Director for International and Gulf of Mexico, HR Manager for International Operations, Human Resources Consultant for Permian EOR Operations, Expat Relations and Services Manager for OXY Oman, Head of Human Resources and Administration for OXY Bahrain, Employee and Organisational Development Consultant for OXY Corporate in Houston, Libya and the United Arab Emirates, and Human Resources Co-ordinator for OXY Colombia. Prior to that, Alejandra worked for Unisys, Sun Microsystems and Quala SA in Colombia.
Alejandra Castaño holds a bachelor’s degree in Psychology from Universidad De Los Andes in Colombia and a master’s degree in International Management from Oxford Brooks University in the UK.
On 18 December 2020, Juliana Hoyos was appointed General Counsel of SierraCol Energy.
Juliana is a licensed Colombian lawyer. She joined the Company in 2011 and has since supported the Legal department as an Attorney. Prior to joining SierraCol, Juliana was an Associate at a leading Colombian law firm, where she practised in mergers and acquisitions and general corporate matters.
Juliana is an attorney-at-law (JD equivalent), graduated from Universidad de los Andes, with a minor in Finance, and has a Corporate Social Responsibility specialisation from Universidad Externado de Colombia.
Caño Limón is a world-class reservoir that regained Colombia its status as a net oil exporter.
We operate the Cravo Norte, Rondón, Chipirón and Cosecha contracts. These fields have a cumulative historical production over 1.5 billion barrels.
We are also partners with Ecopetrol in the exploration blocks Llanos 39 and Llanos 52.
La Cira Infantas is the oldest and among the best understood clusters of fields in Colombia. It has been in production since 1918, with a total historical cumulative production of approximately 900 mmboe.
It operates under an enhanced water injection oil recovery project. In the area we also operate the Bolívar licence, in which we hold 100% WI.
We hold 100% WI in LLA-23, Rio Verde, Los Hatos and Alcaraván blocks that were included with the COG Energy integration.
With these blocks we have an operating hub in CLL with additional near-term drillable upside opportunities.
Marcel van Poecke is a Managing Director for Carlyle International Energy Partners (CIEP) and is Head of the CIEP.
Having more than 25 years of experience in the energy sector, Marcel van Poecke is primarily an entrepreneur, investor and executive manager. He is Chairman of AtlasInvest, a private holding company he founded in 2007. AtlasInvest is engaged in investments across the broad energy spectrum.
Mr van Poecke has a degree in Agricultural Business Administration from the University of Wageningen and an MBA from the William E. Simon School of Management of the University of Rochester.