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Richard King Field
The Graham
Cattle Company (Brownlee) lease is in the Richard King Field area
of Nueces and Jim Wells County, Texas. The primary pay zone in
the field is the top of the massive basal Frio sand sequence at
about 5550 ft. This interval has been an excellent oil producer
with reported cumulative production of more than 2 million barrels
from the field and 794,090 barrels from the Graham Cattle Company
(Brownlee) lease alone.
The Graham
Cattle Company (Brownlee) lease was originally developed by Sun
Oil Company which drilled six (6) successful wells in the late
1970’sand early 1980’s. Subsurface mapping indicates
that the crest of a well defined anticlinal feature which serves
as the primary trapping mechanism for the field is present on
the lease. The proposed test is projected to encounter the primary
pay zone flat to structurally high to the surrounding wells, and
will evaluate the interval for remaining “attic” oil
reserves. An examination of the stratigraphically and it is believed
that reservoir was not efficiently drained by the previous production
from it. Based on the assumption that the reported cumulative
production from the lease of 794,090 Bbls. represents 85% of the
recoverable reserves attributed to it, potential additional reserves
of approximately 140,000 Bbls. are assigned to this primary target.
In addition
to the primary oil pay, the Richard King Field has also been a
prolific gas producer with reported cumulative gas production
of more than 75 Bcf from multiple reservoirs. In the immediate
vicinity of the Graham Cattle Company (Brownlee), there have been
significant quantities of gas produced from several reservoirs
ranging in depths from about 3800-5500 ft. The available surface
data indicates that the favorable structural setting for the proposed
test persists on these shallower horizons and it is expected that
the proposed test will encounter significant gas reserves in these
secondary targets. Based on the available geologic data, potential
recoverable reserves of approximately 1 Bcf are attributed to
these zones in the proposed test.
Log interpretations
of the available well logs in the Richard King Field indicate
that there are a significant number of thinner zones which exhibit
productive log characteristics, but were apparently not produced
based on the available production records. These zones are interpreted
as gas productive zones that were bypassed by previous operators
due to their thin nature and the low price for gas which existed
at the time the field was initially developed. Presumably, the
lower flow rates that would be associated with these reservoirs
did not justify producing them. However, significant additional
gas reserves may be present in these zones with the much more
favorable price of natural gas that now exist. These zones will
be carefully evaluated in the initial test well in the hope that
many of these zones are now commercial to produce particularly
if they are either acidized or fracture stimulated.
In summary,
the available geologic data indicates that the proposed test well
on the Graham Cattle Company (Brownlee) Lease is a low risk, multiple
target development well for the Richard King Field that should
encounter significant oil and gas reserves.
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