1995 National Oil and Gas Assessment 1/4-Mile Cells within the Uinta - Piceance Basin Province

The purpose of the cell map is to display the exploration maturity,
type of production, and distribution of production in quarter-mile
cells in each of the oil and gas plays and each of the provinces
defined for the 1995 U.S. National Oil and Gas Assessment.

Cell maps for each oil and gas play were created by the USGS as a
method for illustrating the degree of exploration, type of production,
and distribution of production in a play or province. Each cell
represents a quarter-mile square of the land surface, and the cells
are coded to represent whether the wells included within the cell are
predominantly oil-producing, gas-producing, both oil and
gas-producing, or dry. The well information was initially retrieved
from the Petroleum Information (PI) Well History Control System
(WHCS), which is a proprietary, commercial database containing
information for most oil and gas wells in the U.S. Cells were
developed as a graphic solution to overcome the problem of displaying
proprietary WHCS data. No proprietary data are displayed or included
in the cell maps. The data from WHCS were current as of December 1990
when the cell maps were created in 1994.

Oil and gas plays within province 20 (Uinta - Piceance Basin) are
listed here by play number, type, and name:

Number Type Name
2001 conventional Piceance Tertiary Conventional
2002 conventional Uinta Tertiary Oil and Gas
2003 conventional Upper Cretaceous Conventional
2004 conventional Cretaceous Dakota to Jurassic
2005 conventional Permian-Pennsylvanian Sandstones and Carbonates
2007 continuous Tight Gas Piceance Mesaverde Williams Fork
2009 continuous Cretaceous Self-Sourced Fractured Shales Oil
2010 continuous Tight Gas Piceance Mesaverde Iles
2014 conventional Basin Margin Subthrusts
2015 continuous Tight Gas Uinta Tertiary East
2016 continuous Tight Gas Uinta Tertiary West
2018 continuous Basin Flank Uinta Mesaverde
2020 continuous Deep Synclinal Uinta Mesaverde
2050 coalbed gas Uinta Basin - Book Cliffs
2051 coalbed gas Uinta Basin - Sego
2052 coalbed gas Uinta Basin - Emery
2053 coalbed gas Piceance Basin - White River Dome
2054 coalbed gas Piceance Basin - Western Basin Margin
2055 coalbed gas Piceance Basin - Grand Hogback
2056 coalbed gas Piceance Basin - Divide Creek Anticline
2057 coalbed gas Piceance Basin - Igneous Intrusion