Reservoir sedimentology of Mesaverde rocks at the Multiwell Experiment site and east central Piceance Creek Basin
Three types of low-permeability sandstone reservoirs are encountered in Upper Cretaceous rocks of the Mesaverde Formation in the US Department of Energy's Multiwell Experiment (MWX) wells in the east-central Piceance Creek Basin, northwestern Colorado. Reservoir characteristics of each type of sandstone are a function of the environment in which it was deposited. Sandstone reservoirs deposited in a fluvial environment are composed of stacked point bar deposits, creating irregular, composite sand bodies. Underlying this, distributary channel reservoirs were deposited on a delta plain as elongate lenticular bodies. They are associated with mudstones on the upper delta plain (coastal) and with mudstones and coals on the lower delta plain (paludal). Below these deposits is a series of blanket sandstone reservoirs deposited as regressive, wave-dominated deltas and shorelines, interbedded with nonmarine coals and marine shales. Best estimates of reservoir morphology, dimensions, trends, and internal characteristics can be made on the basis of sedimentological models and characteristics observed in core and in outcrops near the well site. 21 refs., 17 figs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6736666
- Report Number(s):
- SAND-87-0040; ON: DE87007349
- Country of Publication:
- United States
- Language:
- English
Similar Records
Multiwell Experiment final report: 2, The paludal interval of the Mesaverde Formation
Lateral variability in the Corcoran and Cozzette blanket sandstone and associated Mesaverde rocks, Piceance Creek Basin, Northwestern Colorado. SPE Paper 11608
Related Subjects
030200* -- Natural Gas-- Reserves
Geology
& Exploration
COLORADO
CRETACEOUS PERIOD
DATA
DRILL CORES
EXPERIMENTAL DATA
FEDERAL REGION VIII
GAMMA LOGGING
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
INFORMATION
MESOZOIC ERA
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
NUMERICAL DATA
PERMEABILITY
PICEANCE CREEK BASIN
POROSITY
RADIOACTIVITY LOGGING
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
USA
WELL LOGGING