Green River Formation Water Flood Demonstration Project, Uinta Basin, Utah. Quarterly technical progress report, January 1--March 31, 1993 Page: 2 of 10
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To update the progress of the above two wells, the Monument Butte 10-34 (11/27/92 first
production) has produced 4,953 barrels of oil and 4,039 Mcf of gas and the Travis 14A-28
(1/1/93 first production) has produced 6,187 barrels of oil and 7,829 Mcf of gas from inception
through March 31, 1993. Due to the success of the Travis 14A-28 completion, we recompleted
the behind pipe "D" zone in the Travis 14-28 on March 8, 1993. The 14-28 has produced 2,411
barrels of oil through March 31, 1993 or 105 barrels per day.
Water injection was resumed in the Travis 15-28 in mid March. The average daily rate
was 263 barrels per day. Lomax and the Department of Chemical and Fuels Engineering agreed
to a slower injection rate in the 15-28 due to the fractures found in the logging and coring of the
14A-28 well. At this date, tubing pressure of the 15-28 is at 90 psi and casing pressure is at 480
psi.
Due to weather restraints, the Boundary 10-20 location was not approved by the BLM
until April of 1993. The Boundary 10-20 well was spudded in April. The tentative completion
date is estimated to be the first half of May. The 10-20 is the first of two wells committed to
be drilled in the Boundary unit in 1993 as part of the water flood development. The main oil
objectives in the 10-20 well are the lower Douglas Creek and the "D" sand members of the
Green River formation.
A full diameter core was collected from 5550 ft to 5646 ft in the lower Douglas Creek
interval of well 14A-28. The core was photographed and described in detail. The sandstone of
the lower Douglas Creek in well 14A-28 is comprised of thick packages of planar-laminated,
fine-grained sandstone exhibiting various degrees of dewatering and soft-sediment deformation,
that are separated by thinner disrupted or massive very fine-grained sandstone and siltstone beds.
The planar-laminated sandstones occur in 15 ft thick packages with an intraclast-rich base and
a dewatered top. The sandstones are interpreted as moderate to low-density turbidite channel
deposits. Two deformed planar-laminated sandstone units occur, from 5632.7 ft. to 5623.5 ft.
and from 5605.5 ft to 5588 ft. Both of these units are strongly oil-stained.
The most strongly oil-stained sandstones are those facies that are planar-laminated,
whether or not they are disrupted or undeformed. Presumably, these laminated facies are also
the best reservoir units. Moderately stained sandstones of the lower turbidite channel sequence
have oil saturations that range from 49.6 to 40.5%, horizontal permeabilities in the .46 to .77
Md range and vertical permeabilities in the .50 to .99 Md range. The plug from 5638 ft had the
highest vertical permeability of any of the measured samples, because the laminations are steeply
inclined at this depth. Porosities in this facies range from 9 to 11.7%. Strongly oil-stained
planar-laminated sandstones in the upper turbidite unit are 67 to 70.7% oil saturated. Horizontal
permeabilities in this sandstone unit are much higher than those of the lower turbidite unit and
range from 2.5 to 13 Md. Porosities range from 14.8 to 16.6%.
The core from the lower Douglas Creek interval is moderately fractured. There is some
lithologic control on the formation of fractures. In general, fractures are developed in cemented
sandstone beds rather than in more ductile finer grained lithologies. In the upper portion of the2
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Lomax, J. D.; Nielson, D. L. & Deo, M. D. Green River Formation Water Flood Demonstration Project, Uinta Basin, Utah. Quarterly technical progress report, January 1--March 31, 1993, report, June 1, 1993; United States. (https://digital.library.unt.edu/ark:/67531/metadc1319317/m1/2/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.