Petroleum and Natural Gas Fields in Wyoming Page: 69
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REVIEW OF OIL AND GAS FIELDS
Cheyenne River.-This field (fig. 41) consists
of all of T. 41 N., R. 66 W.,, Weston and Nio-
brara Counties, and is directly south of the
Black Thunder Creek area. The discovery
well, in the SE14 sec. 14, was completed in
August 1953 for an initial daily flowing pro-
duction of 1,524 barrels of oil from the New-
castle sandstone. The production came from
7,039 to 7,053 feet. Seventeen other wells were
completed in the field during 1953, with initial
daily production ranging from 45 to 2,976
barrels of oil. The average initial daily pro-
duction of wells completed in 1953 was 1,045
barrels; the average of the first 16 wells com-
pleted during 1954 was only 574 barrels of oil.
o far only one sand zone in the Newcastle
formation seems to be oil bearing in the Chey-
enne River field; this zone is 10 to 20 feet thick.
The log of a well in the SE1/4NWi/4 sec. 11
showed the depth, in feet, to the top of for-
mations as follows: Niobrara, 5,528; Carlile,
5,838; Frontier, 6,114; Graneros, 6,259; New-
castle, 7,154; Newcastle (pay sand), 7,178 to
7,191; and total depth, 7,292. Analysis of oil
from the Newcastle sandstone is given on page
By January 1, 1957, there were 65 oil wells,
40 shut-in oil wells, and 22 dry holes in the
field. Production during 1956 totaled 240,791
barrels of oil. Cumulative production to the
end of 1956 was 1,966,076 barrels of oil and
an estimated 3,174 million cubic feet of gas
produced with the oil..
Dogie Creek.-This area (fig. 42) has been
designated as all of the area in T. 40 N., R. 65
W., Niobrara County. The discovery well, in
the C NE1/4SW/ sec. 6, T. 40 N., R. 65 W.,
was completed in May 1954, with an initial
production of 240 barrels of oil a day from
the Newcastle sandstone at depth intervals of
7,408 to 7,419 feet. One other well drilled in
the field was completed as a dry hole. The
total reported production to December 31,
1956, was 664 barrels of oil, and an estimated
1 million cubic feet of gas produced with the
oil. The one producing well was abandoned
Hampshire.-This field (fig. 43) has been
designated as T. 42 N., R. 65 W., Weston
County. The area is due east of the Black
Thunder Creek field and south of the Clare-
ton field. This area had previously been called
the South Clareton field.
The first well was completed in the NEi
sec. 6 on March 27, 1953. Initial flowing pro-
duction was 2,040 barrels of oil a day from
the Newcastle sandstone. Two zones in the
Newcastle sand (6,605 to 6,616 feet and 6,620
to 6,630 feet, respectively) were perforated in
the well. The initial production of the 38 wells
completed to the end of 1953 ranged from 50
to 2,040 barrels a day and averaged 475 barrels
a day. The log of a well in the NE1/4 sec. 6
shows the depth, in feet, to the top of forma-
tions as follows: Fox Hills, 1,830; Niobrara,
4,950; Frontier, 5,490; Graneros, 5,725; New-
castle (oil zone), 6,610; and total depth, 6,666
(in Skull Creek shale). Analysis of oil from
the Newcastle sandstone is given on page 356.
Production for 1956 was 259,851 barrels of
oil. Cumulative production to the end of 1956
amounted to 2,047,876 barrels of oil, with an
estimated 3,302 million cubic feet of gas pro-
duced: with it. By January 1, 1957, there were
60 oil wells, 10 shut-in oil wells, and 14 dry
holes in the field.
Sherwin.-This area (fig. 44) is all of the area
in T. 41 N., R. 67 W., Parts of Converse, Nio-
brara, and Western Counties are in this town-
ship. The discovery well, in the NW, sec.
12, was completed in October 1953 for an ini-
tial daily flowing production of 152 barrels of
oil from the Newcastle sandstone. The depth
of the producing interval was 7,846 to 7,860
feet. The top of the Newcastle sandstone was
logged at 7,812 feet.
During 1956, 77,624 barrels of oil was re-
ported produced at the field. Cumulative pro-
duction to the end of 1956 was 268,551 barrels
of oil and an estimated 500 million cubic feet
of gas produced with the oil. By January 1,
1957, there were nine oil wells, four shut-in oil
wells, and four dry holes in the field.
Snyder Creek.-This area (fig. 45) has been
designated as T. 40 N., R. 66 W., Niobrara
County. This area is at the southern end of
the Clareton "trend." The Fort Union forma-
tion is exposed at the surface at an elevation
of about 4,430 feet.
The discovery well, in the C NW1/4SW1/4
sec. 3, was completed in January 1954. Initial
flowing production was 300 barrels a day of
440 API gravity oil from the Newcastle sand-
stone. The oil came from perforations in the
casing between 7,728 to 7,734 and 7,737 to 7,752
feet. The log of the well shows the depth, in
feet, to the top of formations as follows: Wall
Creek (Frontier), 6,760; Mowry, 7,540; New-
castle, 7,720; and Newcastle pay, 7,741. Anal-
ysis of oil from the Newcastle sandstone is
given on page 357.
Oil produced in 1956 total 24,088 barrels.
Cumulative production to the end of 1956 was
166,449 barrels of oil and an estimated 288.7
million cubic feet of gas produced with the
oil. By January 1, 1957, there were five oil
wells, six shut-in oil wells, and five dry holes in
Leverett.-This area has been designated as T.
39 N., R. 66 W., Niobrara County. The dis-
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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/m1/83/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.