Geology and development of Mills Ranch complex: world's deepest field

Journal Article · Tue May 01 04:00:00 EDT 1979 · Bull. Am. Assoc. Pet. Geol.; (United States)

OSTI ID:5944404

Jemison, Jr, R M

The Mills Ranch complex, located on the southwest edge of the deep Anadarko basin in the southeast corner of Wheeler Co., Texas, is fast developing into one of the largest fields in the deep Anadarko. The complex, part of a deep buried granite uplift extending northwest-southeast along a large thrust fault, is complicated by numerous faults and unconformities. The discovery well of the deep Mills Ranch Hunton play, the Freeport Oil Co. 1 Sidney Fabian, was drilled in 1972 to a depth of 21,640 ft (6492 m) and completed at a calculated open flow rate of 93 million CF/day. Since that time, at least three separate productive reservoirs in the Silurian-Devonian Hunton have been delineated. The Hunton, averaging 930 ft (279 m) in thickness, has production from both the Chimneyhill and Henryhouse sections. Wells in the Hunton on the main structure are capable of producing up to 20 million CF/day. The deepest production in the world was found in the Arbuckle from 24,435 to 26,518 ft (7330 to 7955 m) in the 1 Ledbetter, completed in October 1977. Significant deep production on the Mills Ranch complex will cause increased deep-drilling activity in fields now producing only from the Hunton as well as on nonproducing structures in this part of the Anadarko basin.

• OSTI ID: 5944404
• Journal Information: Bull. Am. Assoc. Pet. Geol.; (United States), Journal Name: Bull. Am. Assoc. Pet. Geol.; (United States) Vol. 63; ISSN BAAPA
• Country of Publication: United States
• Language: English

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