1995 National Oil and Gas Assessment 1/4-Mile Cells within the Central Coastal 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 11 (Central Coastal) are listed here
by play number, type, and name:

Number Type Name
1101 conventional Point Arena Oil
1102 conventional Point Reyes Oil
1103 conventional Pescadero Oil
1104 conventional La Honda Oil
1105 conventional Bitterwater Oil
1106 conventional Salinas Oil
1107 conventional Western Cuyama Basin
1109 conventional Cox Graben