ANAHUAC FIELD. Anahuac field is an oval-shaped oil and gas field
near Turtle Bay in central Chambers County, on the coast of
Southeast Texas. Its discovery and development were
scientifically guided by its primary operators, Humble Oil and
Refining Company, Sun Oil Company, and Gulf Oil Corporation. The
field draws oil and gas from a faulted domal uplift in massive
sands of the Marginulina and upper Frio formations. The source
of its primary recovery was a strong water-drive and gas-cap
expansion, but since April 1957 the reservoir has been
maintained by reinjection into the Frio formation of all the
nonassociated and most of the casinghead gas produced in the
field. Between its discovery on March 6, 1935, and January 1,
1993, the field produced more than 277 million barrels of oil,
and between 1974 and 1993 the field yielded more than 43.3
billion cubic feet of gas. The field is significant because the
small number of operators in it followed a systematic drilling
program that spaced wells for optimal oil re