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==Reservoir==
==Reservoir==
The primary (as of 2007) reservoir in the Covenant Field is the Navajo Sandstone Early Jurassic (Toarcian) eolian sandstone. Parry, Chan, and Nash<ref name=Parry>Parry, W. T., M. A. Chan, & B. P. Nash, 2009, [http://archives.datapages.com/data/bulletns/2009/08aug/BLTN08170/BLTN08170.HTM Diagenetic characteristics of the Jurassic Navajo Sandstone in the Covenant oil field, central Utah thrust belt]: AAPG Bulletin, vol. 93, no. 8, p. 1039-1061.</ref> outlined diagenetic charchteristics of the Navajo Sandstone from cores in the Covenant field. As of April 2015 the field had 24 active wells, and had produced a cumulative 21,443,660 barrels of oil.<ref>[https://oilgas.ogm.utah.gov/pub/Publications/Reports/Prod/Field/?C=M;O=D Field Production Reports, Utah]</ref>
The primary (as of 2007) reservoir in the Covenant Field is the Navajo Sandstone Early Jurassic (Toarcian) eolian sandstone. Parry, Chan, and Nash<ref name=Parry>Parry, W. T., M. A. Chan, & B. P. Nash, 2009, [http://archives.datapages.com/data/bulletns/2009/08aug/BLTN08170/BLTN08170.HTM Diagenetic characteristics of the Jurassic Navajo Sandstone in the Covenant oil field, central Utah thrust belt]: AAPG Bulletin, vol. 93, no. 8, p. 1039-1061.</ref> outlined diagenetic charchteristics of the Navajo Sandstone from cores in the Covenant field. As of April 2015 the field had 24 active wells, and had produced a cumulative 21,443,660 barrels of oil.<ref>[https://oilgas.ogm.utah.gov/pub/Publications/Reports/Prod/Field/?C=M;O=D Field Production Reports, Utah]</ref>
[[TABLE 1]]
Table 1. Covenant Oil Field Reservoir Characteristics*
Production summary as of January 1, 2009: Discovery 2004 6.87 million bbl of oil; oil 84%, water 16%, no gas
Structural closure, 800 ft (270 m); oil column, 450 ft (150 m) Reservoir depth, 6356 ft (1937 m) true vertical depth; subsea level
depth, −94 ft (−29 m)
Oil-water contact, −603 ft (−184 m)
Reservoir temperature, 87°C (188°F); reservoir pressure, 2360 psi
(18,134 kPa, 181 bar)
Average water saturation, 38%
0.48% S, d13C = −29.4 to −29.0‰
Structure: backthrust on the Gunnison-Salina thrust fault (Campanian
to Paleocene)
Source rocks: Carboniferous; migration: Cretaceous to early Tertiary
C a Mg Na K Fe SiO2
4 2 8 m g / l 41
10,080 220 12 46
Water Chemistry H C O �3
SO4
Cl
pH
Specific gravity Total dissolved solids
5 1 8 3000 14,100
6.45
1.0208 28,400
*Chidsey et al. (2007).
==Significance==
==Significance==