Vanessa Green
2018 - 2022 PASO President
Vanessa Green is currently a Joint Audit Senior Advisor at ConocoPhillips “COP” in Bartlesville, Oklahoma.  Vanessa has worked for ConocoPhillips for 14 years in various roles including Commercial Crude Oil Supply and Trading, JV Audit, Revenue Accounting, Recruiting, and JV Accounting.  Vanessa served as Chairperson for the Audit Committee at PASO from 2015-2017.  She has been on the PASO board since 2017.  Vanessa served on the nomination committee for the COPAS National Board in 2018.  Vanessa holds degrees in International Business and Finance from Oklahoma State University.  Vanessa lives in Owasso with her husband, Jared and three boys Colton, Aiden and Mason.  She enjoys traveling and spending time with family and friends.  Vanessa is a 3rd generation OSU Cowboy and her family all bleeds orange.

Nate Wolf
2018 - 2022 PASO 1st Vice-President
Nate Wolf is a Senior Severance Tax Advisor for ConocoPhillips in Bartlesville, Oklahoma.  He specializes in marketing cost deductions and State severance tax legislation.  Over his nearly 30-year career he has worked for Amoco Corporation, The Williams Companies, Magellan Midstream Partners, and the last 6 years with ConocoPhillips.  Nate has held Supervisory positions in Revenue, Joint Interest Billing, and Drilling Accounting. He is currently a Director in PASO-Tulsa, Revenue sub-committee chair for Regulatory and Royalty Compliance in COPAS, and co-chair for the Severance Tax Committee in API.   All of which he is a regular contributor on State Legislation.  Nate has a BS degree in Accounting from John Brown University and is an Oklahoma CPA

Bryan Cox
2018 - 2022 PASO 2nd Vice-President
Bryan Cox is a Senior Auditor at Gas Equities, Inc. in Tulsa, OK and is a Certified Public Accountant.  He has many years of public accounting experience serving various industries including Oil and Gas, Manufacturing and Healthcare.  Since 2010, Bryan has served as a lead auditor on joint venture expense audits, revenue audits and vendor audits.  Bryan holds both a Bachelor’s and Master’s degree in Accounting from Oklahoma State University.  Bryan lives in Tulsa with his wife and two children.  He enjoys playing music, watching sports and spending time with family and friends.

Patricia Ellington
Patricia is the principal owner of Integrated Back Office Enterprise LLC (I-BOE).  This company provides outsourcing in the areas of operational accounting, contract compliance and litigation, land/lease matters, training, and special projects for Oil and Gas Upstream companies. I-BOE helps small to medium-sized Upstream Oil and Gas companies alleviate their difficulties, so they can achieve obligations and accomplish goals.
Before starting a consulting business, Patricia spent seventeen years in the corporate world of oil and gas generating new functions and roles.  These included a contract compliance department that paid for itself within three years and Regional Financial Analysts to help connect accounting and operations.  Projects managed by Patricia include restructuring a land department, transitioning process systems, bankruptcy reorganization, and training accountants in operations. After a successful career helping specific companies, Patricia now helps any company complete assignments and generate results.
Patricia has a BS in Accounting and has a published teaching module “Understanding the Landman”.  Patricia is a board member of the Petroleum Accountants Society of Oklahoma (PASO – Tulsa) and is the COPAS National Joint Interest Standing Committee Vice-Chair.
Patricia enjoys spending time with family, friends, and her German Shepard Dogs and managing a family atmosphere small business.

Melodee Papke
Melodee Papke currently serves as the Vice President of Operations, Enterprise Clients for PetroLedger Financial Services, an oil and gas accounting firm with offices in Texas and Oklahoma. Melodee holds a BBA in Accounting from Northeastern State University, and has 30 years experience in oil and gas accounting and management, including significant work with private equity-backed companies preparing and coordinating both transactional and reporting functions. Melodee manages the Tulsa office, where she is responsible for coordinating multiple accounting teams for enterprise-level clients, as well as business development. Melodee lives in Tulsa with her husband Murray Papke (petroleum engineer).  She is both a CPA and APA and an avid sports fan.

Aric Miller
Aric Miller is a currently a Senior Financial Analyst at Calyx Energy III. Over his career he has worked at Associated Resources, Samson Resources and Cimarex Energy. Aric has performed many functions in Joint Interest Billing, Revenue, Audit and Corporate Accounting. Aric holds both a Finance and Accounting Bachelor’s degrees from Oklahoma State University and a Master’s in Accountancy from the University of Oklahoma. Aric lives in Broken Arrow with his wife, Tara Miller (CDOA) and three kids Ethan, Kenric and Lily. Aric enjoys playing golf, cooking, working out and having friends over for game night.