Integrated Outcrop and Subsurface Studies of the Interwell Environment of Carbonate Reservoirs: Clear Fork (Leonaradian Age) Reservoirs, West Texas and New Mexico

James W. Jennings, Jr. ; Lucia, F. Jerry

University of Texas at Austin

关键词: Data Analysis;    02 Petroleum;    Oil Fields;    Site Characterization;    Stratigraphy;   

DOI  :  10.2172/811893
RP-ID  :  NONE
RP-ID  :  AC26-98BC15105
RP-ID  :  811893

美国|英语

来源: UNT Digital Library

【 摘 要 】

Petrophysical heterogeneity in the South Wasson Clear Fork (SWCF) reservoir and other shallow-water platform carbonates in the Permian Basin and elsewhere is composed of a large-scale stratigraphically controlled component and a small-scale poorly correlated component. The large-scale variability exists as a flow-unit scale petrophysical layering that is laterally persistent at interwell scales and produces highly stratified reservoir behavior. Capturing the rate-enhancing effect of the small-scale variability requires carefully controlled averaging procedures at four levels of scaleup. Porosity can be easily scaled using arithmetic averaging procedures. Permeability, however, requires carefully controlled power-averaging procedures. Effective permeability is increased at every scaleup level.