Petroleum and Natural Gas Fields in Wyoming Page: 7
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REVIEW OF OIL AND GAS FIELDS
1933 another well in sec. 36 was drilled 5,459
feet to the Chugwater formation. The Sun-
dance formation was water bearing at 4,920
to 4,930 feet, and a sand in the Morrison for-
mation at 4,571 to 4,595 feet produced at the
rate of 6 million cubic feet of gas daily, with
a shut-in wellhead pressure of 1,850 p.s.i.
In 1946 a well in sec. 1, T. 33 N., R. 95 W.,
was drilled to 7,430 feet to test the Tensleep
sandstone. The results of tests of several
formations were as follows: Tensleep sand-
stone produced water with a show of oil;
Phosphoria formation produced oil with con-
siderably salty water; Dinwoody formation
yielded 225,000 cubic feet of gas a day; Sun-
dance formation in five tests produced no oil,
gas, or water; Morrison formation yielded
300,000 cubic feet of gas a day; Dakota and
Lakota sandstones and the Muddy sand were
all dry; Frontier formation produced 25,000
cubic feet of gas a day.
The log of a deep well drilled near the crest
of the Alkali Butte structure gives the depth,
in feet, to the top of formations as follows:
Frontier, 2,600; Mowry shale, 3,416; Muddy
sand, 4,040; Dakota sandstone, 4,240; Lakota
sandstone, 4,325; Morrison, 4,452; Sundance,
4,600; Nugget sandstone, 4,912; Chugwater,
5,185; Phosphoria, 6,522; and Tensleep sand-
About 24 wells have been drilled in or near
Alkali Butte field; all but 5 of these wells
were either dry holes or produced only a short
time and were abandoned.
There were two gas wells and two oil wells
in the field as of December 31, 1956. These
wells had a daily capacity of possibly 3 million
cubic feet of gas and 25 barrels of oil. The
wells were shut in. Although Alkali Butte
field could have produced some oil and gas,
the field has been shut in virtually since its
Analyses of oil from the Muddy sand and
Phosphoria formation are given on page 321.
Analyses of gas from the Dakota sandstone,
and water from the Mesaverde formation,
Steele shale, Frontier formation, Muddy sand,
Morrison formation, and Sundance formation
are given ,in tables 8 and 9 (pp. 287 and 292,
The total production from the field has been
91.2 million cubic feet of gas and 11,554 bar-
rels of oil. As of June 1, 1957, the Alkali
Butte field is shut in.
A unit plan for developing and operating
the Alkali Butte field was approved by the
Secretary of the Interior on October 1, 1936.
ALLEN LAKE AND EAST ALLEN LAKE
The Allen Lake gasfield (fig. 3) in secs. 27
and 34, T. 23 N., R. 79 W., Carbon County,
occupies a small dome at the northern end of
the Allen Lake anticline, a structure about 7
miles long and 1 mile wide. The axis of the
structure forms a reverse curve and, in gen-
eral, trends northwest-southeast. The dome
has about 900 feet of independent closure.
The formations on the northeast flank dip as
much as 750, whereas those on the southwest
flank range from 300 to 500. The Niobrara
shale is exposed on the surface, which has an
elevation of approximately 6,600 feet.
The Allen Lake field was discovered in 1919
on completion of a well in the NE1/4NW1/4
sec. 34, with a reported daily open-flow volume
of 35 million cubic feet of gas from the Muddy
sand at 1,357 to 1,397 feet. The upper Dakota
sand contained water at 1,419 feet. A well
drilled in 1925 disclosed gas or a showing of
gas in the following formations: Thermopolis
(Muddy sand), from 1,324 to 1,364 feet;
Cloverly, 1,400 to 1,555 feet; Morrison, 1,555
to 1,680 feet; and Sundance, 1,680 to 1,845
feet. Commercial production was developed
in 1932 and 1933, when three wells were drilled
and a combined open-flow volume of approxi-
mately 75 million cubic feet of gas daily was
established. The main producing formation
was the Sundance; the initial shut-in well-
head pressure was 900 p.s.i.
In July 1938 a well in the SE1/4NW1/4 sec.
34 was drilled to 4,362 feet and abandoned.
The depth, in feet, to the top of the formations
was as follows: Sundance, 2,270; Chugwater,
2,551; and Tensleep, 3,864 (the Tensleep sand-
stone was water bearing).
By January 1, 1950, the Allen Lake gasfield
was completely abandoned. The field pro-
duced 1,768 million cubic feet of gas prior to
abandonment. With an estimated productive
area of 320 acres, the recovery per acre was
5.5 million cubic feet of gas. Analyses of gas
from the Morrison and Sundance formations
are given in table 8 (p. 287).
The East Allen Lake field (fig. 3) in secs.
17 and 18, T. 22 N., R. 78 W., Carbon County,
occupies a small dome at the southeastern por-
tion of the Allen Lake anticline. The surface
formation is a shale of Benton age at an aver-
age elevation of 6,570 feet.
The field was discovered December 25, 1936,
when a well drilled in the NE1/SE1/4 sec. 18
flowed gas at the rate of 15 million cubic feet
daily from the upper sand in the Sundance
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Biggs, Paul & Espach, Ralph H. Petroleum and Natural Gas Fields in Wyoming, report, 1960; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc38797/m1/21/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.