Overview of shallow gas production from Eagle-equipment rocks south and east of Cedar Creek Anticline
Journal Article
·
· AAPG Bulletin
OSTI ID:272654
- St. Cloud State Univ., MN (United States)
Shallow gas has been produced for more than fifty years from Eagle-equivalent Cretaceous sandstones on Cedar Creek Anticline in eastern Montana. In the last two decades four fields have been developed off the south and east flanks of the anticline: (1) West Short Pine Hills and (2) Cady Creek in Harding County, SD; (3) Gaslight in Fallon County, MT; and (4) Little Missouri in Bowman County, ND. Paleogeographic reconstructions indicate that the reservoir rocks in all four fields were deposited near an outer shelf margin more than 200 mi (322 km) east of the strandline. West Short Pine Hills and Cady Creek Fields are located within a sandstone sheet up to 15 ft (4.6 m) thick. Gaslight Field is near the margin of the sheet and has thinner sandstones. In Little Missouri Field the reservoir is primarily interbedded siltstone and shale. Regional lineament zones mapped on satellite images influenced Cretaceous deposition and were also the sites of post-depositional deformation. The South Dakota gas fields are located within a tectonic block well away from bounding lineament zones. Gaslight is within a northeast-trending lineament zone and Little Missouri is at the intersection of lineament zones trending north-east and northwest. Production in Little Missouri Field is clearly influenced by structure. Values of initial production and marker-bed elevation show a strong correlation. Wells with large IP values are found along the crest of a small anticline and show steeper decline curves than wells with small IP values at the margins of the structure. In contrast, IP values show little correlation with structural altitude in the gas fields of South Dakota and Montana.
- OSTI ID:
- 272654
- Report Number(s):
- CONF-9607116--
- Journal Information:
- AAPG Bulletin, Journal Name: AAPG Bulletin Journal Issue: 6 Vol. 80; ISSN 0149-1423; ISSN AABUD2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Paleotectonic controls on deposition of Niobrara formation, Eagle sandstone, and equivalent rocks (Upper Cretaceous), Montana and South Dakota
West-east stratigraphic transect of Cretaceous rocks - Southwestern Montana to western Minnesota
Geologic characterization of Shannon reservoirs, West Short Pine Hills field, Harding County, South Dakota
Conference
·
Wed May 01 00:00:00 EDT 1985
· Am. Assoc. Pet. Geol., Bull.; (United States)
·
OSTI ID:6170054
West-east stratigraphic transect of Cretaceous rocks - Southwestern Montana to western Minnesota
Conference
·
Sat Jun 01 00:00:00 EDT 1991
· AAPG Bulletin (American Association of Petroleum Geologists); (United States)
·
OSTI ID:6130115
Geologic characterization of Shannon reservoirs, West Short Pine Hills field, Harding County, South Dakota
Conference
·
Fri Sep 01 00:00:00 EDT 1989
· AAPG Bulletin (American Association of Petroleum Geologists); (USA)
·
OSTI ID:5567513