Patterns of permeability in eolian deposits
The eolian, Jurassic Page sandstone of northeastern Arizona is marked by a highly ordered heterogeneity. The heterogeneity is expressed by the intricate association of stratification types, which are a direct result of the depositional processes. The dominant stratification types in eolian reservoirs are grainflow, grainfall, and wind-ripple deposits, which form on the lee faces of migrating dunes; interdune deposits, which form between migrating dunes; and extra-erg deposits, which occur sporadically when other depositional environments encroach upon an eolian system. These stratification types each have a unique permeability range, which implies that the fluid migration routes in eolian reservoirs will be dictated by the geometry and types of stratification present. One of the most important aspects of this study is the correlation of qualitative geologic descriptions with quantitative variables such as permeability. About 2,000 measurements were made with a field minipermeameter on an outcrop of the Page sandstone. These data show that three distinct permeability modes directly relate to the different stratification types.
- Research Organization:
- Univ. of Texas (US)
- OSTI ID:
- 6483934
- Journal Information:
- SPE (Society of Petroleum Engineers) Format. Eval.; (United States), Vol. 3:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Depositional controls on permeability in an Eolian sandstone sequence, Page sandstone, northern Arizona
Geologically-sensible modelling of the spatial distribution of permeability in eolian deposits: Page Sandstone (Jurassic), northern Arizona
Related Subjects
03 NATURAL GAS
ARIZONA
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
RESERVOIR ROCK
PERMEABILITY
SANDSTONES
EXPLORATION
GEOLOGIC MODELS
GEOLOGY
GEOPHYSICS
HETEROGENEOUS EFFECTS
HYDRAULIC CONDUCTIVITY
JURASSIC PERIOD
MATHEMATICAL MODELS
STRATIFICATION
FEDERAL REGION IX
GEOLOGIC AGES
GEOLOGIC DEPOSITS
MESOZOIC ERA
MINERAL RESOURCES
NORTH AMERICA
RESOURCES
ROCKS
SEDIMENTARY ROCKS
USA
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration