Cox and others, 1994									Data Set 15
Reference:  Cox, D.L., S.J. Lindquist, C.L. Bargas, K.G. Havholm, and R.M. Srivastava, Integrated modeling for optimum management of a giant gas condensate reservoir, Jurassic eolian Nugget Sandstone, Anschutz Ranch East Field, Utah  Overthrust (USA): Chap. 22 in Stochastic Modeling and Geostatistics (J.M. Yarus and R.L. Chambers, eds.), American Association of Petroleum Geologists Bulletin, Computer Applications in Geology, No. 3, 1994.
Authors' affiliation:  Amoco Production Co., Univ. of Wisconsin, FSS International
Age:  Jurassic 
Formation:  Nugget Sandstone
Location:  Anschutz Ranch East Field, Southwestern Wyoming, United States
Well:  Well 29-12
Depth range:  12,283-12,308  feet.  
Lithology:  Eolian sandstone -- the 25-foot interval tabulated here is described as grain flow by the authors.
Alteration:  not given.
Production:  Retrograde gas condensate and volatile oils.
Core measurement conditions:  whole core samples, standard conditions.
Data entry:  Entered from computer printout provided by S. J. Lindquist.  See Figure 6 of reference.
Note:  Core depth differs from log depth of Figure 6 by 32 feet.
Permeability orientations:  khmax is maximum horizontal permeability; kh90 is horizontal permeability at 90 degrees from khmax, kvertical is permeability along axis of core.
Comment:  This interval was selected to illustrate an exceptional trend in a consolidated sandstone:   permeability increases with depth in an interval of nearly constant porosity and uniform environment.  The gamma-ray log (see figure 6 of reference) tracks the permeability data and indicates a fining-upward sequence.  It appears that a well-sorted sandstone with grain size that gradually decreases upwards has retained the permeability-porosity signature of an unconsolidated sand pack, unmodified by diagenetic processes even though porosity has been reduced to 16 percent.