Petroleum and Natural Gas Fields in Wyoming Page: 5
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REVIEW OF OIL AND GAS FIELDS
Information regarding oil and gas fields in
Wyoming is presented separately for each
field. Figure 1 shows the location of these
fields. Each field report includes a geo-
graphical location map (if available) showing
structural features and well locations; a brief
description of the field geology; surface eleva-
tions; history of development; status of the
fields as of January 1, 1957 (or later); pro-
duction of oil and gas to the end of 1956;
a brief discussion of unusual or important field
problems or techniques; and analyses (if avail-
able) of produced oil, gas, and water. The
method of transportation of the oil or gas
from the field is noted.
Also appearing at the end of the field re-
ports are five tabulations covering the follow-
1. Analyses of natural gases produced in Wyoming.
2. Analyses of oilfield waters produced in Wyom-
3. Production of petroleum in Wyoming, by fields,
4. Production of natural gas in Wyoming, by
fields, through 1956.
5. Analyses of 414 crude-oil samples from Wyom-
The Adon oilfield is in sec. 2, T. 52 N., R. 72.
W., Campbell County. It is apparently a
structural high near the geographic center of
the Powder River Basin. The structure was
drilled after seismic study. The Fort Union
formation is exposed at the surface at an ele-
vation of 4,350 feet.
The field was discovered February 21, 1948,
upon completion of a well in the C NW1/4
NE 1 sec. 2. Initial production by pumping
was 239 barrels of 300 API gravity oil a day
from the Minnelusa sand through perforations
in the casing from 8,990 to 9,007 feet. The
well was drilled to 9,945 feet in the Madison
formation, and tests showed only water. The
reported depth, in feet, to the top of forma-
tions in this well are as :follows: Frontier,
6,395; Thermopolis, 7,170; Muddy, 7,365;
Dakota, 7,615; Lakota, 7,804; Morrison,
7,865; Chugwater, 8,123; Minnekahta, 8,925;
Opeche, 8,941; Minnelusa, 8,997; and Madi-
son, 9,765 Analyses of oil[ and water from
the Minnelusa sand are given on page 321 and
in table 9 (p. 292), respectively.
Of the five wells drilled in the Adon area,
only the discovery well produced oil. The
one well was shut in during 1950 but produced
166 barrels in 1951 and 1,148 in 1952. Cumu-
lative production to the end of 1952 was 28,138
barrels of oil. The one producing well was
abandoned in 1952.
Alkali Butte (fig. 2) is a closely folded anti-
cline in secs. 1 and 2, T. 33 N., R. 95 W., and
secs. 26, 35, and 36, T. 34 N., R. 95 W., Fre-
mont County. Alkali Butte field is 12 miles
southeast of Riverton and 8 miles north of
Sand Draw. The Steele shale outcrops at
elevations of 5,200 to 5,400 feet. Sandstone
beds outcropping around the structure dip
400 to 500 on the west side and 150 to 200 on
the east side. The north end of the structure
is separated from the main structure by a
fault, and here the beds dip more gradually.
The field was discovered in 1920, when a
well drilled in the SE1/ NW1/4 sec. 1 tested
approximately 8 million cubic feet of gas
daily. The producing formation was the
Frontier, at depths of 2,481 to 2,493 feet; the
shut-in wellhead pressure was 600 p.s.i. From
1920 to 1929 a number of small oil wells were
completed in the north end of the field in the
Shannon sandstone member of the Steele shale
at 900 to 930 feet. These wells were unimpor-
tant and soon were abandoned.
In a test well to the Frontier formation in
the north end of the field, water was found in
the sand at 3,544 to 3,560 feet. In 1928 a well
in sec. 1, T. 33 N., R. 95 W., was completed in
the Muddy sand at 3,960 to 3,970 feet, with a
reported initial daily production of 700 barrels
of oil of 330 API gravity. This well also
produced 1.5 million cubic feet of gas a day
from the Cloverly formation at 4,151 to 4,156
In 1931 a well drilled in sec. 36, T. 34 N., R.
95 W., to 4,482 feet and bottomed in the Mor-
rison formation, had an open-flow volume of
10 million cubic feet of gas daily from the
Lakota sandstone at 4,381 to 4,394 feet; the
shut-in wellhead pressure was 1,775 p.s.i. In
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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/m1/19/: accessed February 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.