National Fuel Gas Company is a holding company. The Company is engaged in the production, gathering, transportation, distribution and marketing of natural gas. It also develops and produces oil reserves, primarily in California. The Company operates in five segments. The Exploration and Production segment seeks to discover and produce raw materials (natural gas, oil and hydrocarbon liquids), and its operations are carried out by Seneca Resources Corporation. The Pipeline and Storage segment operations are carried out by National Fuel Gas Supply Corporation, which provides interstate natural gas transportation and storage services for affiliated and nonaffiliated companies through an integrated gas pipeline system. The Gathering Segment consists of National Fuel Gas Midstream Corporation�s operations. The Utility segment�s operations are carried out by National Fuel Gas Distribution Corporation. The Energy Marketing segment�s operations are carried out by National Fuel Resources, Inc.