Corporate Headquarters

3300 1st Place Tower
15 E 5th St
Tulsa, Oklahoma 74103

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Our Leadership Team helps us succeed


James Adelson

Chief Executive Officer

Jim Adelson is President and Managing Member of Nadel and Gussman, LLC and its various energy affiliates. Jim received a Bachelor of Arts and Sciences in Economics from Cornell University.

Jim is a member of World President’s Organization, Chief Executives Organization and currently serves on the University of Tulsa Board, the Holland Hall Preparatory School Board, the Cornell University Arts & Sciences Advisory Council and the Tulsa Community Foundation.


Kevin DeLay

Chief Operating Officer

Kevin DeLay is Chief Operating Officer of Nadel and Gussman, LLC. He joined Nadel and Gussman in 2016 and holds both a BS in Petroleum Engineering and MBA from the University of Oklahoma.

Prior to joining Nadel and Gussman, Kevin worked at American Energy Partners where he served as Director of Engineering of AEP’s affiliates SCOOP Energy Co. and Haynesville Energy Co., as well as General Manager of McClendon Energy Partners. Prior to AEP, Kevin spent 10 years at Devon Energy.


Shelley Nichols

Chief Financial Officer

Shelley Nichols has been part of the Nadel and Gussman leadership team since 2007 and is the Chief Financial Officer. She received her Master of Business Administration from Oklahoma State University and is a certified public accountant.

Prior to joining Nadel and Gussman, Shelley held finance and accounting management roles at IBM, PricewaterhouseCoopers and British Petroleum. She is a member of the Oklahoma Society of Certified Public Accountants and the Women’s Energy Network.


Perry Phipps

Vice President – Land and General Counsel

Perry Phipps is Vice President of Land and General Counsel of Nadel and Gussman, LLC, where he is responsible for all land and legal functions. Perry holds a BA from Texas Christian University and a JD from University of Notre Dame Law School.

Prior to joining Nadel and Gussman, Perry served as Assistant General Counsel for Sable Permian Resources, LLC, Senior Counsel for American Energy Partners, Counsel and Assistant Secretary for XTO Energy Inc., and as an energy and corporate attorney with Jackson Walker, LLP after serving as a landman at XTO for East Texas, Louisiana, Mississippi and Arkansas.


James Bucci

Vice President – Geosciences

Jim Bucci is Vice President of Geoscience for Nadel and Gussman, LLC. Jim received his Master of Science in Geology and a BS in Geology both from the University of South Carolina.

Prior to joining Nadel and Gussman, Jim served as Director of Geoscience for American Energy Partners’ Woodford shale business unit in the Woodford Shale/Miss Lime in the Nemaha High/Anadarko shelf and Southern Division Geologic Manager for Continental Resources leading the exploration effort in the Anadarko/Ardmore Basins resulting in the identification of the South Central Oklahoma Oil Province (SCOOP) play now a major resource play in the Oklahoma and the US.