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Title: The deep Madden Field, a super-deep Madison gas reservoir, Wind River Basin, Wyoming

Madison dolomites form the reservoir of a super deep, potential giant sour gas field developed on the Madden Anticline immediately in front of the Owl Creek Thrust along the northern rim of the Wind River Basin, central Wyoming. The Madison reservoir dolomites are presently buried to some 25,000 feet at Madden Field and exhibit porosity in excess of 15%. An equivalent dolomitized Madison sequence is exposed in outcrop only 5 miles to the north on the hanging wall of the Owl Creek thrust at Lysite Mountain. Preliminary comparative stratigraphic, geochemical and petrologic data, between outcrop and available cores and logs at Deep Madden suggests: (1) early, sea level-controlled, evaporite-related dolomitization of the reservoir and outcrop prior to significant burial; (2) both outcrop and deep reservoir dolomites underwent significant recrystallization during a common burial history until their connection was severed during Laramide faulting in the Eocene; (3) While the dolomite reservoir at Madden suffered additional diagenesis during an additional 7-10 thousand feet of burial, the pore systems between outcrop and deep reservoir are remarkably similar. The two existing deep Madison wells at Madden are on stream, with a third deep Madison well currently drilling. The sequence stratigraphic framework and the diageneticmore » history of the Madison strongly suggests that outcrops and surface cores of the Madison in the Owl Creek Mountains will be useful in further development and detailed reservoir modeling of the Madden Deep Field.« less
Authors:
 [1] ;  [2]
  1. Louisiana State Univ., Baton Rouge, LA (United States)
  2. Louisiana Land and Exploration, Denver, CO (United States)
Publication Date:
OSTI Identifier:
425749
Report Number(s):
CONF-960527--
TRN: 96:004994-0387
Resource Type:
Conference
Resource Relation:
Conference: Annual convention of the American Association of Petroleum Geologists, Inc. and the Society for Sedimentary Geology: global exploration and geotechnology, San Diego, CA (United States), 19-22 May 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 AAPG annual convention. Volume 5; PB: 231 p.
Publisher:
American Association of Petroleum Geologists, Tulsa, OK (United States)
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; WYOMING; NATURAL GAS FIELDS; STRATIGRAPHY; PETROLEUM DEPOSITS; NATURAL GAS; EXPLORATION; PRODUCTION; RESERVOIR ROCK; GEOLOGIC MODELS