Hygiene Sandstone

Closed-form expressions for pore-scale saturation (Eq.[16] and [17]) for a unit cell with triangular central pore were fitted to measured saturation data of Hygiene Sandstone (Brooks Corey, 1964). A triangular central pore was selected to emphasize capillary contributions expected for sand pore space. An elementary unit c ell with dimensions l. = 0.033 mm, ex = 0.0012, p = 0.0001 was found to yield best lit to the measured dala as depleted in I ig. I 13a. flic resulting saturation curve is... 

Soil Gilat loam+ Touchet silt loam Hygiene sandstone ... 

There were no available complete chemical analyses of the formation water. Therefore, the chemical composition was inferred from two pieces of information the water quality analysis dated 1969 and the mineralogy of the Hygiene Sandstone. The partial chemical analysis was conducted prior to injection and included pH, alkalinity, and chloride concentration (Table 8.4). In the model, the analytical alkalinity was as-... 

Data were collected for source rocks and sandstones to provide the basis for material balance calculations. Pertinent source rock data were compiled (published and new data) for the Lower Cretaceous shales and limestones (see columnar section. Fig. 2) in the Wattenberg area, which is the deepest and hottest portion of the basin. Petrologic data were derived from the study of 115 thin sections of sandstones throughout the stratigraphic column. In the Wattenberg area, the LFpper Cretaceous Terry and Hygiene sandstones produce oil at Spindle field and the Lower Cretaceous Niobrara... 

Moredock DE, Williams SJ (1976) Upper Cretaceous Terry and Hygiene Sandstones -Singletree, Spindle and Surrey fields. Weld County, Colorado. In Epis RC, Weimer RJ (eds) Colorado School Mines Prof Contrib 8, Golden, CO, pp 264-274 Pettijohn FJ, Potter PD, Siever R (1987) Sand and sandstone. 2nd edn. Springer, Berlin Heidelberg New York, 553 pp... 

Fig. 2. Columnar section for the Wattenberg area of the Denver Basin. The primary source rocks are the shales and limestones of the Dakota Group, Benton Group, and Niobrara Formation. The most important hydrocarbon reservoirs are the Dakota J Sandstone and the Hygiene and Terry sandstones of the Middle Pierre Shale. The Lyons Sandstone, Codell Sandstone of the Benton Group, and limestone of the Niobrara Formation also produce hydrocarbons...

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