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Gleason’s experience has been accumulated mostly in the oil and gas basins of Texas, Oklahoma, New Mexico and Louisiana. However, he is also familiar with the producing areas located in the Michigan Basin, the Williston Basin, the Denver-Julesberg Basin, the Illinois Basin, the Black Warrior Basin, the Bighorn Basin, Powder River Basin, Green River Basin, Unita Basin, the Paradox Basin and the San Juan Basin.

Not surprisingly, Mr Gleason has worked the Aqua Fria, Vera Cruz and Cantarell Basins of Mexico, and the Alberta Basin of Canada.

More recently, Dennis has assisted with the evaluation of oil and gas assets located in the North Sea, Ukraine, on-shore and off-shore Angola, on-shore Indonesia and off-shore Viet Nam.