Abstract Natural gas production in Kansas has totaled about 11.4 trillion cu ft since commercial discovery in 1873 in Allen County. The large Hugoton gas area in the southwestern part of the state accounts for most of the production. Kansas gas reserves are estimated to be about 17.4 trillion cu ft. Permian rocks have yielded about 74 per cent of the cumulative production, Pennsylvanian rocks 15 per cent, and Mississippian rocks 9 per cent; the other 2 per cent is from lower Paleozoic rocks. A very minor quantity of gas has been produced from Cretaceous rocks in northwestern Kansas. Cumulative gas production reported from the major structural features of the state is Hugoton embayment, 76 per cent; Cherokee basin, 8 per cent; Sedgwick basin, 8 per cent; Central Kansas uplift, less than 3 per cent; Pratt anticline, less than 2 per cent; and the Forest City basin, Nemaha anticline, and Salina basin each less than 1 per cent. Helium, natural gas liquids, and carbon black are important byproducts from the natural gas. Transport of the gas is by more than 12,000 mi of pipeline. About half of the amount of the annual production is consumed within the state.

Abstract The Anadarko basin is located in northwest Oklahoma, the Oklahoma and northern Texas Panhandles, southwest Kansas, and southeast Colorado, an area of about 155,400 km2. The basin is tectonically bounded on the south by the Amarillo- Wichita uplift, on the west by the Sierra Grande uplift, on the northwest by the Las Animas arch, on the north by the Cambridge arch-Central Kansas uplift, on the northeast by the Nemaha Range (Eardley, 1962), on the east by the central Oklahoma fault zone (Amsden, 1975), and on the southwest by a major WNW-trending fault zone that connects the northwest end of the Arbuckle Mountains with the east end of the Wichita Mountains. Figure 1 illustrates several subsidiary elements of the greater Anadarko basin: the Hugoton Embayment, the Pratt anticline, the Sedgwick basin, the Keyes dome, and the Dalhart basin, all of which are important to understanding the economic geology of the basin. This is a major oil and gas province because of its large size, thick sedimentary section, and the fact that significant accumulations of hydrocarbons have been found in each of the Paleozoic systems. The name “Anadarko Basin“ was first proposed by Gould (1924). He described it as ” … a large synclinal basin, …“ He stated in his summary that ”A structural trough, known as the Anadarko basin, is recognized as extending northwest from a point near the west end of the Arbuckle Mountains for a distance of more than 150 miles.” He further speculated that “… this structural trough continues across the state line into the panhandle of Texas.”