Sneider and others, 1977								Data Set 59
Reference:  Sneider, R.M., F.H. Richardson, D.D. Paynter, R.E. Eddy, and I. A. Wyant, 1977, Predicting reservoir rock geometry and continuity in Pennsylvanian reservoirs, Elk City Field, Oklahoma: Journal of Petroleum Technology, v. 29, p. 851-864.
Authors' affiliation:  Sneider & Meckel Associates, Inc., Shell Oil Co., Shell Oil Co., Occidental Petroleum, Inc. and independent.
Age:  Pennsylvanian
Formation:  L and M zones
Location:  Elk City Field, Anadarko Basin, Oklahoma
Well:  Shell G. Slatten No. 1
Depth range:    9,370 - 9,440 feet 
Depositional Setting:  barrier bar deposit.  “Accretion of a barrier bar basinward results in deposition of progressively coarser material over fine material.”  The result is a coarsening-upward grain-size profile that is reflected in the porosity and permeability data.  
Primary mineralogy:  not given.
Grain size, sorting, and porosity:  Sorting improves with decreasing grain size such that pebble conglomerates are poorly sorted and very fine-grained sandstones are well to very well sorted.  Porosity increases with decreasing grain size such that porosity in pebble conglomerates range from 10 to 15 percent and porosity in fine-grained sandstones ranges from 18 to 24 percent.  (see Figures 4A and 4B of the reference).
Production:  oil
Core measurement conditions:  not stated.
Data entry:  manual entry from Figure 11 in the referenced paper.