American Oil and Gas Reporter - June 2015 - 101

SpecialReport: Offshore & Subsea Technology
offshore is cycle time. As an example,
Wirth says Hess' deepwater Stampede oil
and gas field was discovered in 2005, 115
miles south of Fourchon, La., in Green
Canyon Blocks 468, 511 and 512, but it
wasn't sanctioned until fourth quarter 2014.
"We expect to have a rig on location
in 2016 and first production in 2018," he
calculates. "We have contracted 85 percent
of the services: drilling rig, engineering
and fabrication. We have been able to
take advantage of lower prices."
The field is located in 3,500 feet of
water and has a reservoir depth of 28,00031,000 feet. Wirth says production facilities
will consist of subsea production and injection wells tied back to a single tension
leg platform. Gross topsides processing
capacity for the project is 80,000 bbl/d
oil and 100,000 bbl/d of water injection.
"We will have the deepest application
gas lift yet," he projects. "Eventually,
Stampede will have six producers and four
water injection wells to recover 300 million-350 million barrels of oil equivalent."
The TLP hull will support a topsides
deck with two levels. Subsea production
wells will be drilled from two drill centers,
according to Wirth, with piggable flowlines
tying the wells back to the platform.
Hess will operate Stampede with a 25
percent working interest. Chevron U.S.A.
Inc. subsidiary Union Oil Company of
California, Statoil Gulf of Mexico LLC
and Nexen Petroleum Offshore USA Inc.
each has a 25 percent working interest.

Increasing Rig Activity
When Hess, which has interests in 11
Gulf of Mexico fields, brings in its first
of two rigs to drill Stampede next year, it
will have three rigs operating in the Gulf.
Besides the rig drilling its Tubular Bells
project, Wirth says Hess will bring in a
rig to drill its legacy fields.
"Penn State and Conger have produced
four times their sanctioned volumes, and
we are adding more drilling locations,"
he lauds.
He says the Tubular Bells deepwater
oil and gas field, which was discovered
in 2003, has been a tremendous success
for Hess. It lies in 4,300 feet of water,
135 miles southeast of New Orleans, primarily in Mississippi Canyon Block 724.
"The project was sanctioned in 2011,
one year after Hess took over as operator,"
Wirth recounts. "We brought it on line
safely, on budget, and on time."
Tubular Bells had first production in
fourth quarter 2014, and Wirth says net

production is forecast to average 30,00035,000 boe/d this year. Hess is the operator
with a 57 percent working interest. Chevron
owns the other 43 percent. Hess has three
wells on production in Tubular Bells, and
Wirth says a fourth well has been completed and should come on line by midyear.
"We have the capability of executing
highly complex deepwater projects," he
emphasizes. "Our co-owners have confidence that we are able to execute these

deepwater projects."
Tubular Bells' reservoir targets are
approximately 24,000 feet below the surface and under 10,000 feet of salt. Full
field development is expected to include
four or five producing wells and one or
two water injection wells.
The production facilities consist of a
subsea wet tree infrastructure tied to a threelevel topside structure that has living quarters
accommodating 50 persons, supported by a

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JUNE 2015 101



American Oil and Gas Reporter - June 2015

Table of Contents for the Digital Edition of American Oil and Gas Reporter - June 2015

Contents
American Oil and Gas Reporter - June 2015 - Cover1
American Oil and Gas Reporter - June 2015 - Cover2
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American Oil and Gas Reporter - June 2015 - Contents
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