Oil & Gas Vendor Audit Roundtable

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The Spring 2020 Roundtable has been

cancelled. Stay tuned for more information about the next Roundtable. 


The Speakers

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Concho Resources

Bill spent 30 years in law enforcement before joining the oil and gas industry. He has worked in Concho's Financial Security department for over 7 years

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Marathon Oil

Kanza has worked in the oil and gas industry for over 4 years in various supply chain roles. She is currently an E-Commerce Compliance Analyst for Marathon’s Invoice & Vendor Compliance team for the last 2 years

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Revenew International

Since 1999, Paul has been involved in providing consulting and internal audit services within technical areas of organizations including engineering, procurement and construction. At Revenew, Paul leads the Performance Improvement practice and oversees business development and account management for clients seeking cost recovery, cost containment and performance improvements both with their vendors, suppliers and contractors as well as within their operations.


Gulfport Energy

Brandy leads Gulfport's JV, Vendor, and Revenue audits. She has worked in the Oil and Gas industry in a variety of audit roles since 2008.


Re-Vision Management Consulting, LLC

Thomas has worked in internal audit and fraud prevention services for over 13 years, including the last two running his own consulting business.


Discovery Natural Resources

Roger has worked in the oil and gas industry for the last 3 years and in IT Security for 9 years.

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Raj has over 12 years of experience working with OpenInvoice.  Originally with the OpenInvoice support team at DO2 Technologies (now Enverus), he joined Ovintiv's eInvoicing team in 2011. Currently, he is a senior member of the PriceBook Support Team within Ovintiv's Supply Management Services Group.



Sue spent 17 years in the legal field before moving to the energy industry in 2005.  Her current role is Manager, Contracts & Audit within Ovintiv’s Supply Management team.

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Tammy has over thirty years of professional experience in the oil & gas industry.  Since 2010 she has served as Manager of Joint Venture and Vendor Audits at Ovintiv.


Discovery Natural Resources

Rick is passionate about third-party risk within the oil and gas industry. He has been in audit for 16 years. He also runs the Oil and Gas Vendor Audit Roundtable.

The Agenda

Day 1 - April 29

"Detecting Invoice Noncompliance Issues through Machine Learning" - Kanza Mazhar - Marathon Oil

"A Contractor with a Platinum Record: a Fraud Case Study" - Rick Roybal - Discovery Natural Resources

“Building a Value-Add Vendor Management Program ” Brandy Weldon - Gulport Energy

"IT Security and Audit: A Tag Team" -Roger Neveau - Discovery Natural Resources

"21st Century Oilfield Analytics" - Bill Anderson - Concho Resources

Day 2 - April 30

"Manage, Know, and Protect Your Spend" - Tammy Miller-Davison, Raj Biswas, Sue Rudanec - Ovintiv

"Construction Auditing:  Auditing Beyond Cost and Schedule Risks" - Paul Pettit - Revenew

"Vernon Beck: From Finger on the Button to a Hand in the Cookie Jar" - Thomas Mullinnix - Re-Vision Management Consulting

The Oil and Gas Vendor Audit Roundtable is registered with the National Association of State Boards of Accountancy (NASBA) as a sponsor of continuing professional education on the National Registry of CPE Sponsors. State boards of accountancy have final authority on the acceptance of individual courses for CPE credit. Complaints regarding registered sponsors may be submitted to the National Registry of CPE Sponsors through its website: www.nasbaregistry.org.

Case Study



CPE Hours

2         8       

Marathon Oil Corporation

5555 San Felipe Street
Houston, TX 77056

The Venue


The Sponsors

We are grateful to our sponsors.  Click the sponsors' name to learn more.