Geo-Log is an oil and gas surface equipment manufacturer that specializes in wireline equipment. Founded in 1974, the company initially focused on geophysical logging for lignite coal exploration before expanding internationally to offer services for various minerals and near-surface investigations. Under the leadership of Lloyd Hawthorne, Geo-Log shifted its focus to developing affordable and dependable wireline equipment for independent wireline companies. The company's product range includes measuring heads, depth panels, sheaves, greaseless technology, and custom machining services, catering to the wireline service industry's needs for quality and reliable equipment.