About
Broad range of deep expertise.
Leaders in the transition of oil and gas.
Purvis Energy Advisors functions as an associated team of professionals with individually deep and collectively broad expertise on both traditional oil and gas and new opportunities.
Because we began early, we have become experts and leaders in issues like decommissioning, emissions, re-purposing, and new forms of subsurface energy.
Highlights
Established 2015, offering 30 years of third-party engineering
Focused on transition since 2020
Team of professionals and allies in Texas, California, Colorado, New York, and Canada
Expertise in petroleum engineering, reserves, geology, geophysics, and petrophysics
Experience in every major U.S. basin and many basins abroad
Pioneer in shale analysis, pioneer in new energy
Frequent contributor to public discussions in professional societies and media
Deeply involved in professional societies and professional standards
Dwayne Purvis, P.E.
Founder & Principal Advisor
For over 30 years, registered professional petroleum engineer Dwayne Purvis has answered the reservoir engineering and strategic questions faced by executives, owners, and litigants. He worked for a major reserves certification firm, pioneered analysis of shale reservoirs, served as the engineering manager for a private producer, and even operated a few wells.
In recent years, he has become a widely recognized trainer and a spokesperson for the oil industry’s need to engage in the energy transition. As a leader in the field, he personally experienced how overwhelming the change can be—and the risks we face if changes aren’t made. To face those risks, he recently completed a master's degree in sustainable energy from Johns Hopkins University.
Today, he helps oil and gas producers make the best engineering and strategic decisions they can with their legacy assets and to recognize and seize the opportunities of the energy transition.
Dwayne teaches, writes, and speaks on both technical and strategic topics across the industry. He often presents at society meetings, and his insights have frequently been featured in the Journal of Petroleum Technology and OilPrice.com. He also created and hosts one of the earliest decarbonization conferences for oil and gas, CarbonExpo.
He teaches industry courses for the American Association of Petroleum Landmen, SAGA Wisdom, and TRC Consultants, and he served as an adjunct professor at Texas Christian University’s Ralph Lowe Energy Institute. He is a member of the National Speakers Association, multiple oil industry organizations, and an active 25-year member of the Society of Petroleum Engineers.
He often presents at society meetings, and he served as a Distinguished Lecturer on end-of-life issues for the Society of Petroleum Engineers. His insights have been featured in the Journal of Petroleum Technology, OilPrice.com, and numerous media outlets.
Team Members
PEA also draws upon the expertise of Allied Advisors who maintain their own practice but join our teams to meet client needs.
Lucy Frish
Administrative Advisor
Lucy Frish is responsible for managing the internal office systems of Purvis Energy Advisors, working behind the scenes to ensure the team is provided with the resources they need to serve our clients effectively and efficiently.
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After receiving a degree in Creative Writing from the University of North Texas, Lucy expanded her technical writing expertise in a variety of fields, from nonprofits to fashion, and now energy transition.
In her free time, when she’s not working on personal writing projects, she enjoys traveling to new places and rereading her favorite classics.
Mathew Sofield
Technical Advisor
Mathew Sofield sports a degree in experimental Physics, broad programming skills, and a by-line in Nature. He supports data gathering, reduction, and analysis for clients’ largest and most complex projects.
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After working briefly as an oilfield hand, Mat earned a physics degree at a top tier research university, and his undergraduate research earned him a national award and co-authorship of a paper in Nature. In research and commercial labs, he cultivated expertise in Python, SQL, Wolfram, and MATLAB.
Mat plays tennis on the weekends but enjoys his collection of motorcycles and vintage cars most every day.
Tiffany Flanagan
Engineering Advisor
Tiffany Flanagan has spent 15 years as a reservoir engineer at top firms, and now she brings that diligence and expertise to help clients
plan reliable strategies based on deep understanding.
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Tiffany spent 11 years studying and planning conventional and unconventional fields across Texas and Louisiana for ExxonMobil and XTO, learning their thorough work methodologies. Then she spent another five years at a top tier third-party reserves firm analyzing production across the U.S. using both ARIES and PHDwin.
Today, she helps her clients through Flanagan Technical Services to go below the surface, and she resides most of the year in the cool climes of Colorado.
Rudy Sandoval
Simulation Advisor
Rudy Sandoval dedicated his career to building and deploying reservoir simulators and simulations. He uses his decades of experience and his own commercial software to bring rigorous, quantitative analysis to questions of reservoir performance for clients of Purvis Energy Advisors.
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With degrees in both petroleum engineering and computer science, he spent 18 years in the research department at ConocoPhillips before starting launching SANTEC to develop, sell and support REXCEL for sophisticated I/O of one of the most robust simulation calculation engines.
Besides running simulations from his home in near Tulsa, Rudy enjoys his small family ranch in New Mexico.
Shameka Allen-Lane
Event Advisor
Shameka Allen-Lane handles webinars andconferences for Purvis Energy Advisors events,including CarbonExpo events, through her company Catalyst Event Coaching.
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Shameka's favorite part of her job is the merger of her love for events and science. She majored in chemical engineering before earning a master's in event management! When she’s not hard at work, you’ll find Shameka curled up with a good book at her home in Florida. She prefers the real thing, no audiobooks!
Allied Advisors
Amy Spaziani
Principal of Spaziani GeoServices Allied Advisor in Geology
Amy Spaziani has worked as a researcher, explorationist, and development geologist across several states and abroad, including much of her career in California. Today, she uses that knowledge to help Purvis Energy Advisor clients make practical, profitable business decisions based on the fundamental reality of the rock itself.
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Trained as both a geologist and oceanographer, Amy has worked most of her 15-year career in the oil industry including locations in California and Texas as well as South America and Africa. Besides large and small oil companies, she has also worked for two geologic surveys and the American Geological Institute. She brings a broad base of geologic experience, a broad toolkit of software, and a uniquely conscientious attention to detail.
She offers geologic insights through Spaziani GeoServices, and when time allows she enjoys exploring her new home in the Finger Lakes region of New York with her family.
Laura Freeman
Founder of Highpoint Global Capital
Allied Advisor in Engineering and A&D
Laura Freeman occupies a unique space at the intersection of engineering and business, including a top tier MBA. Laura helps PEA clients to understand the nuances of business decisions and financial reporting built on engineering analysis.
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Laura Freeman is a Managing Director at Highpoint Global Capital. Laura specializes in technical valuation, financing, and navigating the complexities of dealmaking including over $8 billion in acquisitions and divestitures.
She has been featured as an expert on M&A, finance, and reservoire engineering for various magazines, industry events, and online publications including Oil and Gas Financial Journal, Society of Petroleum Engineers (SPE), OilPrice.com, American Association of Petroleum Geologists (AAPG), and Journal of Petroleum Technology (JPT).
Laura earned a master’s degree in petroleum engineering, an MBA from UCLA Anderson, and a bachelor’s degree in physics
Tom Walker
Principal of Evans & Walker
Allied Advisor in California
Tom has long lived and worked as a registered professional engineer in California, trusted by governments, operators, investors and real estate developers alike. He brings an unparalleled depth of knowledge about the oil industry there.
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Five years after graduating cum laude in petroleum engineering from Texas A&M, Tom moved from Texas to California. Initially working for 10 years at a major oil company, he gained additional experience in production engineering, facilities engineering, and health, safety and environmental engineering. For the last 25 years, Tom has offered a broad range of petroleum engineering consulting services to assist a broad base of clients to navigate the unique geology and complex operating environment of California.
Tom’s varied and deep expertise allows him to render assistance to oil and gas operators, developers looking to build on / adjacent to abandoned wells. He also assists governmental agencies seeking insight into oil and gas operations within their jurisdiction and provides professional engineering input to governmental agencies relative to their decisions on permitting construction on sites containing oil wells. As a member of both the SPE and the SPEE, he is also well positioned to assist mineral interest owners with the valuation of their oil and gas assets.
Tom is married with two kids, who are both recent college graduates and are just starting their work careers. He has stayed very involved with the local community, including a 7-year stint organizing outdoor activities (hiking, biking, canoeing, kayaking) for BSA Troop 1 in Huntington Beach. He has climbed a mountain or gone for a run or biked in seven countries on four continents.
Lachlan Hughson
Founder of 4D Resources Advisory
Allied Advisor in M&A and Corporate Finance Using Probabilistic Analyses
Lachlan has spent his entire career working with oil and gas companies globally as an investment banker and corporate executive. He helps PEA’s clients to make more informed decisions faster given the irreducible uncertainties of the business.
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Lachlan Hughson, the founder of 4-D Resources Advisory LLC, works with Boards, executives, and investors across the global energy and mining industries to help them build more successful companies through making better strategic and financial decisions using dynamic financial modeling.
With $30+ billion of mergers, acquisitions, and divestitures undertaken, supported through $15+ billion of debt, high yield, and equity financings, Lachlan has developed an insightful, commercial framework on which to upgrade the corporate finance function for the challenges and opportunities of today’s business world.
Lachlan’s professional experience reflects increasingly senior investment banking roles at Lehman Brothers, Bear Stearns, Standard Bank, and Macquarie Capital, and as the Finance Director at Antero Resources Corporation. He holds an MSc degree, with Distinction, from Imperial College London and an MBA degree from the Kellogg School of Management, Northwestern University.
Industry Partners
In addition to strong relationships with other excellent organizations who can assist our clients, PEA is proud to collaborate also with these recognized leaders.
Responsible Energy Solutions and its founder Roy Hartstein were pioneers of mitigating methane emissions and remain a leader in the the certification of low-emissions gas production.
360 Engineering & Environmental Consulting is a leader in the decommissioning and environmental issues more broadly in the Canada, and they are expanding their diligent work to the U.S. in California, Montana, and Appalachia