Our Leadership

Driving us forward

Our leadership is comprised of dedicated, honest, and inspiring individuals.

Together, they are responsible for leading Weatherford to new heights.

Mark A. McCollum

President and Chief Executive Officer, Weatherford International plc

Mr. McCollum has over 36 years of leadership experience in the energy sector. Prior to joining Weatherford in March 2017, he served as Chief Financial Officer of Halliburton Company, a position he started in 2008 and resumed in July of 2016 following an interim role as Chief Integration Officer during the pendency of Halliburton’s proposed acquisition of Baker Hughes Incorporated. Prior to joining Halliburton, Mr. McCollum held a number of senior positions at Tenneco, Inc., including Chief Financial Officer, and served as an Audit and Advisory Partner in Arthur Andersen’s Energy Division, where he began his career. 

Mr. McCollum is a member of the Board of Directors and the Audit and Compensation Committees at Archrock, Inc., previously known as Exterran Holdings. He is also a Regent at Baylor University and on the Baylor College of Medicine Board of Trustees. Mr. McCollum received his Bachelor Degree in Business Administration and Accounting from Baylor University, and is a registered CPA in the State of Texas.

Christoph Bausch

Executive Vice President and Chief Financial Officer

Christoph Bausch is the Executive Vice President and Chief Financial Officer of Weatherford. He assumed this position in December 2016.

Christoph's previous experience as a public company CFO, his financial expertise, depth of knowledge in the oil and gas industry, as well as leadership capabilities further strengthen Weatherford’s focus on financial discipline, cash flow generation, and improved cost efficiencies.

In May 2016, he joined Weatherford as the Controller-Product Lines. Prior to joining the Company, and since May of 2011, he served as the Executive Vice President and Chief Financial Officer of Archer Limited, an oilfield services company publicly traded in Norway on the Oslo Stock Exchange. Before he joined Archer, Christoph served as a Global Finance Director of Transocean. Prior to that role, he had a 20-year international career with Schlumberger where he held a variety of senior financial positions in the United States, United Arab Emirates, France, Mexico, Venezuela, and Germany across a number of business segments covering operations, engineering, manufacturing, and supply chain.

Early in his career, Christoph worked with a team to program and operate a manufacturing scheduling software. He also led successful contract negotiations of one of the first integrated projects which was a multibillion dollar contract in Venezuela with PDVSA. He managed implementation of several larger ERP systems during his career, purchased and sold many businesses, and led numerous business improvement projects.

Christoph holds an M.B.A. degree ("Diplom Kaufmann") from the University Of Mannheim, Germany. He is fluent in English, German, and Spanish and proficient in French. He and his wife have four children and reside in Geneva, Switzerland.

Karl Blanchard

Executive Vice President and Chief Operating Officer

Karl Blanchard is the Executive Vice President and Chief Operating Officer of Weatherford. He assumed this position in August 2017. In his role at Weatherford, Karl utilizes his depth of experience to oversee all region and product line operations, QHSSE, sales, engineering, R&D, and supply chain.

Karl brings with him a career of significant achievement and valuable insight gained from more than 35 years in the oil and gas service industry. He served as Chief Operating Officer for Seventy Seven Energy where he was responsible for the drilling, hydraulic fracturing, and rental tool business units, as well as key support functions. As part of Seventy Seven’s leadership team, he successfully transitioned the company into a stand-alone publically traded company, executed cost management initiatives, and implemented a structured process focused on developing in-house leadership talent. These accomplishments resulted in Seventy Seven’s successful merger with Patterson-UTI, creating the second largest land driller and top five pressure pumping company in the United States.

Prior to Seventy Seven Energy, Karl spent more than 30 years at Halliburton throughout which he was responsible for a significant portion of the company’s flagship product service lines, including production enhancement, the number one provider of hydraulic fracturing services globally; cementing, the number one provider of cementing services in the industry; and testing and subsea which was successfully established as a strategic product line within the Halliburton portfolio. He also served as Country Vice President of Halliburton Indonesia.

Karl has a Bachelor of Science degree in engineering from Texas A&M University and is a member of the Society of Petroleum Engineers.

Kyle Chapman

Global Segment President – Production

Kyle Chapman is the Global Segment President for Production. In this role, he is responsible for driving innovation and addressing customer needs surrounding Weatherford’s Artificial Lift, Drilling Fluids, Pressure Pumping, Production Software and Testing product lines. Kyle is also a member of the Sustainability Committee, driving conversations around our safety-enabled technologies, processes, and reduced environmental footprint.

He began his tenure with Weatherford in 1999 as a Design Engineer in the U.S. and then moved to the Latin American region in 2001. Since then, he has held various positions within the company, becoming well versed in our technological offerings and global footprint. He has served as President of Product Line Marketing, and President of the Completion, Production, and Well Construction business units. He has also served as Vice President of the Western Hemisphere, Vice President of Latin America, Country Manager and Central Area Manager for Mexico, Country Manager for Trinidad and Tobago, and Region Business Unit Manager for the main well construction product lines throughout Latin America. He has lived in Brazil, Venezuela, Argentina, Trinidad, and Mexico, and is fluent in Spanish and Portuguese.

In early 2009, Kyle was directly involved in managing the ATG I, II, and IV projects in the Chicontepec field in Mexico, together, the largest integrated project that Weatherford had undertaken globally. The project included the ramp-up of personnel, infrastructure, and day-to-day operations. The project went from zero to 42 drilling rigs operating in a short period of time with associated headcount going from less than 50 people to over 4,000 in the same time period. This is just one of the many accomplishments Kyle has had over his career with Weatherford.

Kyle holds a Bachelor of Science in Mechanical Engineering from Texas Tech University.

Karen David-Green

Vice President of Investor Relations, Marketing, and Communications

Karen David-Green is the Vice President of Investor Relations, Marketing, and Communications for Weatherford.

In this role, she is responsible for leading the Company’s strategic communications, public affairs, and forward-thinking brand. She is also a member of the Disclosure and Sustainability committees, helping ensure consistent messaging in the market place and progressing our sustainability agenda.

Karen joined Weatherford in June 2010 as Vice President of Investor Relations. She then also led Corporate Communications for several years before assuming further responsibility for Marketing. Prior to joining Weatherford, Karen held the role of Vice President of Equity Research covering the U.S. Oil Services and Equipment Industry at Oppenheimer, CLSA, and The Royal Bank of Canada. Karen also held the position of Director of Fixed Income Research at American General Corporation where she was responsible for both the investment grade and high-yield chemical portfolio analysis and allocations. Following her Wall Street career, she served as the head of Global Market Research at Baker Hughes.

Karen is a member of the IPAA/PESA Education Advisory Board supporting student learning in science, mathematics, and emerging technology concepts. She is a member of the Greater Houston Partnership’s Executive Women’s Partnership and the Women’s Energy Network. She is also a former Advisory Board Member of The Women’s Fund.

Karen received her Bachelor of Business Administration from the University of Texas at Austin where she majored in Finance.

Christina M. Ibrahim

Executive Vice President, General Counsel, and Corporate Secretary

Christina M. Ibrahim is the Executive Vice President, General Counsel, and Corporate Secretary at Weatherford.

Christina brings more than 20 years of legal experience in the oilfield services industry, and is responsible for advising the Board, CEO, and other executive management members in the legal affairs of the company such as governance, compliance, litigation, and commercial business, and leads the global legal department. She oversees policy and creates the strategy and structure for the legal department. She has implemented the Weatherford Enterprise Risk Management and is a member of Weatherford’s Sustainability Committee, which drives the sustainability themes and focus areas for the Company each year.

Prior to joining Weatherford, she served as Vice President, Chief Global Commercial Counsel, and Corporate Secretary of Halliburton Company, with additional responsibility for the Supply Chain, M&A, Employment, Securities, and Real Estate practice groups. In her 18 years at Halliburton, she held several leadership positions, including Vice President, General Counsel, and Corporate Secretary for a Halliburton joint venture company. She also served in the practice areas of Governance, Commercial, Regulatory, and Employment law. Prior to joining Halliburton, Christina was a Litigation Attorney with the law firm Wickliff and Hall, P.C.

An active member in the community, Christina is proud supporter of the Texas State Bar, Texas General Counsel Forum, American Bar Association, Association of Corporate Counsel, Women’s Energy Network, and the Society of Corporate Secretaries and Governance Professionals. Christina also serves on several local not-for-profit boards including the Houston Area Women's Center, Prevent Blindness, Texas, and the Association of Women in Energy. Additionally, she serves on the executive leadership team of the Go Red American Heart Association campaign and is a former director of The Rose and the Holocaust Museum Houston.

Christina has received numerous awards recognizing her leadership and achievements including, most recently, the National Diversity Council’s Influential Women Leadership Award. She was selected as a Houston Business Journal’s Women in Energy Leadership honoree, and named a Greater Houston Women’s Chamber of Commerce Breakthrough Woman.

Christina holds a Bachelor of Science in Business Management and Finance from Virginia Tech and a Juris Doctorate degree from Thurgood Marshall School of Law where she graduated magna cum laude.

Frederico Justus

President Eastern Hemisphere

He is responsible for Weatherford’s Eastern Hemisphere operations and also serves on the Sustainability Committee, helping to provide a diverse perspective of sustainability needs across the organization.

Frederico joined Weatherford in 2010 and has held various positions including Vice President roles for Continental Europe, Europe and Caspian, Sub-Sahara Africa, and Middle East and North Africa.

In his more than 18 years experience in the oil and gas industry, he has worked all over the globe. Prior to joining Weatherford, Frederico spent 12 years working for Schlumberger in various management assignments.

Early in his career with Weatherford, Frederico was responsible for three different regions – Europe, Sub-Sahara Africa (SSA), and the Middle East – where he led substantial enhancements, including several integrated projects in Europe and several high-profile managed pressure drilling projects in offshore Angola. Under his leadership, Weatherford gained positive offshore market share distribution in the West Coast of SSA, won the biggest wireline contract ever executed in Kuwait, and also reduced non-productive time in the complex Saudi Arabia market by 50%.

Frederico graduated with a Mechanical Engineering degree with specializations in Strategic Marketing at Stanford University and an Integrated Reservoir Management degree from the Institute of Petroleum and Imperial College, London.

James D. Lukey

Vice President of Human Resources

James D. Lukey serves as the Company’s Vice President of Human Resources.

In his current capacity, James leads the global human resources function across all regions and global product lines in addition to all corporate functions. James is also a member of the Sustainability Committee where he helps ensure a talent management culture that provides our employees with the best opportunities to succeed.

James joined Weatherford in 2007 as the company’s Human Resources Director in Perth with responsibility for the Australian markets. In 2009, he was named Human Resources Director for Weatherford’s Asia Pacific region where he served until 2013. Prior to joining Weatherford, James spent over 15 years in a broad range of human resource and labor relations roles including five years in the mining sector at Iluka Resources, a major producer of Titanium Dioxide based in Perth, Western Australia, and global mining house Rio Tinto Group in Perth, Australia.

After graduating, James spent his early career in paid and unpaid roles supporting community advocacy groups. He is a strong believer in social justice and the power of companies and communities working together to improve society. As the proud father of a child on the autism spectrum, he has become an advocate for those who are less advantaged.

James holds a Bachelor of Arts degree in Industrial Relations from The University of Western Australia.

Lance R. Marklinger

President of Global Sales

Lance R. Marklinger is President of Global Sales for Weatherford.

In this position, he oversees Weatherford’s customer engagement culture and seeks opportunities to foster collaboration and integrated solutions that provide enhanced value to operators.

Lance’s career with Weatherford began in 2010 as Region Vice President for Russia. He later became President of Well Construction and Completion and then Eastern Hemisphere President prior to his current role. With more than 30 years of experience in the oil and gas industry, Lance has gained extensive global aptitude through his numerous assignments around the world. Prior to joining Weatherford, he held various leadership positions with Schlumberger in North America and Russia.

A considerable amount of his time in Russia was dedicated to new business start-ups throughout the country and implementing merger and acquisition strategies, These experiences allowed Lance to gain valuable insight into the transactional and cultural nuances that are key to establishing a strong commercial presence within the Russian petroleum sector.

Lance studied Petroleum Technology and holds a degree from Southern Alberta Institute of Technology.

Doug M. Mills

Vice President and Chief Accounting Officer

Doug M. Mills has served as Vice President and Chief Accounting Officer since June 2013, and serves as the Company’s principal accounting officer.

In this role, Doug oversees the accounting and financial reporting functions for the Company and has been responsible for helping with recent capital market transactions to reduce the debt ratio and streamline the cost structure in one of the most challenging markets in recent history.

Doug joined Weatherford in 2003 and has served in various accounting and controllership capacities in Houston, Aberdeen, and London. He has had corporate and regional controller positions of increasing responsibility, and in 2011 was appointed Vice President of Corporate Accounting. Doug has over five years of public accounting experience with the firms of Ernst and Young and Arthur Andersen.

During his tenure with Weatherford, he has streamlined the monthly accounting process by reducing the time to close each month by more than 7 days, resulting in significant cost realizations.

In his personal life, Doug is an avid traveler and has visited over 50 countries immersing himself in cultures all around the world.

He is a certified public accountant and holds a MPA/BBA from the University of Texas.

James C. Parent

Vice President of Tax

James C. Parent (“Jim”) is the Vice President of Tax. He is responsible for all areas of tax, including global tax planning and compliance.

Jim began his tenure at Weatherford in 2012. Prior to joining Weatherford, and beginning in 2006, Jim served as Vice President of Tax Reporting at Tyco International based out of Princeton, New Jersey, where he was responsible for the global tax accounting, tax compliance, and tax technology function. During his tenure, he built and managed a tax group of approximately 45 staff which was responsible for remediating a tax material weakness as well as tax accounting aspects of the spin-off of both Tyco’s 2007 separation of Covidien plc and TE Connectivity and Tyco’s 2012 separation of Tyco Flow Control International Ltd and ADT Corporation. From 1993 to 2006, James pursued several roles at Pricewaterhouse Coopers from a Consultant, Senior Manager, and finally, Tax Director. James was in the Consumer Industrial Products Group serving multinational corporations, and was responsible for providing, coordinating, and identifying tax opportunities for customers.

Jim enjoys running, biking, and scuba diving, when time permits. He holds degrees from the University of Connecticut, University of Hartford and University of Connecticut School of Law. Married with two daughters, he is in denial that his oldest daughter is looking at colleges and his youngest daughter can easily beat him in a race of almost any distance, by quite a bit.

Jennifer L. Presnall

Vice President of Audit Services

Jennifer L. Presnall is the Vice President of Audit Services for Weatherford.

In this role, Jennifer and her team are responsible for providing independent assurance that Weatherford’s risk management, governance, and internal control processes are operating effectively. These objectives are achieved through a combination of assurance and consulting work provided across all functions and product lines within the organization. The Department of Audit Services provides insight and recommendations based on analysis and assessment of data and business processes in order to ensure efficiency and effectiveness of operations, reliability of financial and management reporting, compliance with laws and regulations, and safeguarding of assets.

Jennifer joined Weatherford in 1998 as an Internal Audit Manager and was promoted to Director in 2000. Five years later, she took the position of Corporate Controller - Internal Reporting from mid-2007 to mid-2010. Jennifer returned to Internal Audit in May of 2010 and was again promoted to Vice President of Audit Services in May 2011. She began her career as an auditor for The University of Texas Medical Branch in Galveston, Texas, and had a short stint at Ernst and Young LLP prior to joining Weatherford.

After visiting her first rig at age 18, she never lost the passion for the oil and gas industry. Now, almost 20 years after joining Weatherford, she has had the opportunity to visit operations in over 20 countries on five different continents.

Jennifer is a Certified Information Systems Auditor as well as a member of the Houston Chapter of the Institute of Internal Auditors and Information Systems Audit and Control Association. She obtained her Bachelors of Business Administration in Accounting from Cleveland State University.

Natalia G. Shehadeh

Vice President and Chief Compliance Officer

Natalia G. Shehadeh serves as Vice President and Chief Compliance Officer for Weatherford.

In this role, Natalia leads a global team of lawyers, forensic accountants, and compliance professionals responsible for daily ethics, anticorruption, antitrust, import, export, trade sanctions, boycott, data privacy, and other compliance matters for Weatherford’s global operations. She is a member of the Sustainability Committee, ensuring the enterprise sustainability goals are weaved into the fabric of our organization and supported by our Code of Business Conduct.

Natalia joined Weatherford in August 2009 as Senior Counsel and Director of Trade Compliance from Shell Oil Company where she was Senior Counsel for Export Controls and Sanctions Compliance. Prior to joining Shell in June 2007, Natalia was Of Counsel with the Washington D.C. office of the law firm Greenberg Traurig, LLP where she advised domestic and multinational customers on export controls, trade sanctions, antiboycott, and antibribery compliance matters.

Early in Natalia’s career she focused on export controls across various high-tech sectors including aviation, defense, aerospace, IT, and even emerging technologies in the nanotech and pyrotechnics spaces. She hails originally from Madrid, Spain, and was raised and schooled in the United States, specifically at the University of Houston and South Texas College of Law. Natalia most enjoys her time spent in the field with our staff working on grassroots compliance and cultural awareness.