Frank graduated from University of Texas with Honors with a degree in Petroleum Land Management in 1972. He started his career with Amoco Production Company and later worked for Anadarko Petroleum Corporation as a Division Landman for the Houston Onshore and Offshore Divisions, and as Vice President of Land for North Central Oil Corporation. He became an Independent in 1985, and specialized in due diligence for producing property acquisitions.

Frank has been active in both the local and national landmen associations, serving as President of HAPL in 1981 and as Chairman of the Publications Committee for AAPL.

Frank has been married since 1970, and he and his wife, Carlee, have four children, and thirteen grandchildren.

Dorsey is a native Oklahoman. He attended the University of Oklahoma wherein 1977 he received a B.B.A., majoring in Petroleum Land Management (PLM). Upon graduating, Dorsey began his career with Exxon Corporation where he was trained and specialized as a pooling and unitization landman. Assignments with Exxon included Los Angeles, Anchorage, Houston, Midland, and Oklahoma City.

Dorsey has also held various staff and management positions with Mesa, Inc., Crawley Petroleum Corporation, Union Pacific Resources Company, The Williams Cos. and Cheyenne Petroleum Company while located in Amarillo, Dallas/Fort Worth, Oklahoma City, and Tulsa. Dorsey is currently the owner/ general manager of UnitPro Land Consultants, LLC in Oklahoma City where he offers expert witness services for litigation involving land contracts. He also assists companies in structuring, preparing, and negotiating the land contracts related to drilling ventures, and teaches seminars involving land-related contracts and agreements.

In 1984, Dorsey joined the AAPL lecture circuit where he began speaking on pooling, unitization, well trades, and operating agreements. He has given hundreds of presentations and seminars to such organizations as the American Association of Professional Landmen (AAPL), the Southwestern Legal Foundation, the Texas, Oklahoma, Kansas and Arkansas Bar Associations, the Oklahoma Marginal Well Commission, Desk & Derrick, COPAS, and many local landmen’s associations and other industry-related organizations. Dorsey has also authored a number of papers that have been published by various land and legal organizations.

From 1986-1989, Dorsey served as Chairman of the AAPL Operating Agreement Revision Committee. This Committee was responsible for revising the AAPL Model Form Operating Agreement, resulting in the issuance of the AAPL Form 610-1989 Model Form Operating Agreement. The revisions included the removal of many problems, pitfalls, and ambiguities known to exist with earlier AAPL operating agreement forms as well as the addition of many new provisions. He also served as a consultant to the AAPL Coalbed Methane JOA Task Force that drafted modifications for inclusion into the AAPL 1982 and 1989 operating agreement forms that are unique to CBM operations. He currently serves on AAPL's JOA Task Force that is once again revising the AAPL Model Form Operating Agreement.

Dorsey has been a member of AAPL since 1977, and a Certified Professional Landman (CPL) since 1986. He is a past member of the Los Angeles, Permian Basin, Southern Oklahoma, Dallas, and Fort Worth Landmen’s Associations. He is currently a member of the Oklahoma City and Tulsa Associations of Professional Landmen.

Dorsey has chaired various committees or held Board positions with, the Los Angeles, Oklahoma City, and Tulsa landmen's associations. He served as president of the Tulsa Association of Professional Landmen in 2004. In 2004, he also served as Chairman of the Regulatory Practices Committee for the Midcontinent Oil and Gas Association.

From 1983-2009, Dorsey served as an Adjunct Professor for the University of Oklahoma where he lectured in the Business College’s PLM and Energy Management programs. Topics included pooling, unitization, operating agreements, well trades, title opinions, title curative, regulatory agencies, and land administration. From 1995-1997, he served as Chairman of the OU PLM Steering Committee that was responsible for the restructuring of the PLM Program into what is now the Energy Management (EM) program. Beginning in 2008, Dorsey also began serving as an Adjunct Professor in the Energy Management Program at the University of Tulsa.