The Anadarko Basin is a geologic depositional and structural basin centered in the western part of the state of Oklahoma and the Texas Panhandle, and extending into southwestern Kansas and southeastern Colorado. The basin covers an area of 50,000 square miles (130,000 km2). By the end of the 20th Century, the Anadarko Basin was producing the largest amount of natural gas in the United States. Notable oil and gas fields within the basin include the Hugoton-Panhandle Gas Field, West Edmond Field, Union City Field and the Elk City Field. The basin is also the only commercial source of iodine in the United States and a major producer of helium.
Sedimentary rocks from Cambrian through Permian age fill the basin. The sedimentary column is thickest, in excess of 40,000 feet (12,000 m), at the southern edge, next to the upfaulted Wichita-Amarillo uplift. The basin has an especially thick section of Pennsylvanian rocks, up to 15,000 feet (4,600 m) thick. The sedimentary column is only 2,000 feet (610 m) thick on its northern and western flanks.
The basin holds one of the most prolific natural gas reserves in North America, with ultimate gas production in excess of 100 trillion cubic feet (2,800 km3) of gas. In 2010, the U.S. Geological Survey estimated that the Anadarko Basin held 27.5 trillion cubic feet of natural gas and 410 million barrels of natural gas liquids (NGL).
The Lone Star Bertha Rogers well in Beckham County, Oklahoma held the record as the world's deepest producing well at the turn of the 21st Century. It was drilled to a depth of 31,441 feet (9,583 m).
In 2010, the U.S. Geological Survey estimated that the Anadarko Basin held 495 million barrels of oil.
The brine in the Pennsylvanian Morrow Formation in the Anadarko Basin contains about 300 parts per million iodine, and is the only current commercial source of that element in the United States. Three companies extract iodine from brine produced as a byproduct of natural gas production from depths of 5,000 feet (1,500 m) to 13,000 feet (4,000 m). Iodine production in 2005 was 1,570 tonnes. The Woodward Iodine company plant is 3.7 miles (6.0 km) west of Woodward, Oklahoma and uses a 6,600 feet (2,000 m) deep well north of the city, while the IOCHEM plant 2.5 miles (4.0 km) east of Vici, Oklahoma extracts the brine from a 9,800 feet (3,000 m) deep well. North American Brine Resources operates a plant near Dover, Oklahoma.
Some natural gas in the basin has unusually high helium content (greater than 0.3%). Helium is recovered from produced natural gas as a byproduct.
- Bobby D. Weaver, "Anadarko Basin." Encyclopedia of Oklahoma History and Culture. Accessed September 13, 2014.
- NZ Oil and Gas, LLC Archived October 22, 2006, at the Wayback Machine.
- "Assessment of Undiscovered Oil and Gas Resources of the Anadarko Basin Province of Oklahoma, Kansas, Texas, and Colorado, 2010." U.S. Geological Survey. Retrieved September 14, 2014.
- S.T. Krukowski, "Iodine," Mining Engineering, June 2009, p.53-54.
- Jessica Elzea Kogel, Nikhil C. Trivedi, James M. Barker, Stanley T. Krukowski (2006). Industrial Minerals & Rocks: Commodities, Markets, and Uses. SME. pp. 541–552. ISBN 978-0-87335-233-8.