Statoil contracts Aker Solutions
for Sverdrup EPMA
Aker Solutions will provide engineering, procurement, and management assistance services
for fve years at the Statoil-operated Johan Sverdrup development in the Norwegian North
Sea. A key focus of the project team is to identify ways to reduce costs and improve the overall effciency of the development.
The EPMA work, valued at NOK 4. 5 billion ($596 million), is part of a 10-year framework
accord announced in December 2013 and comes after Statoil decided to exercise an option.
The assignment will last through 2019 and covers work in the development’s frst phase.
Statoil is operator for the development, which spans three licenses. Other partners include
Lundin Norway, Petoro, Maersk Oil, and Det norske oljeselskap.
Det norske completes
fourth Alvheim tieback
Petrobras hails lower-cost
subsea tree deployment
Production has started
on schedule from the Det
Bøyla feld. Located in production license 340 in the
northern North Sea, the feld
is tied back to the existing
infrastructure at the Alvheim
Discovered in 2009, Bøyla
was developed through a
subsea solution comprised
of two horizontal production wells and one water
injection well. The expected
peak production rate is
more than 20,000 boe/d
when both wells are in production. It is the fourth producing feld tied back to Alvheim and its Alvheim
FPSO, which was achieved through a 28 km (17 mi) pipeline. Recoverable
reserves from the feld are estimated at approximately 23 MMboe, with Alvheim
capable of processing 150,000 b/d.
The Trondheim-based company announced that it will develop small Viper-Kobra accumulations in the Alvheim area.
These are two separate discoveries in production license 203, each containing around 4 MMbbl of recoverable oil. Total recoverable reserves, including
gas, are 9 MMboe.
Det norske plans a NOK 1.8-billion ($237-million) development with two
wells, a new subsea installation and a pipeline tied into the subsea manifold for
Volund, one of the four producing Alvheim satellite felds.
The company will allocate four well slots, with one each initially on Viper
and Kobra, and two for future potential wells.
It expects to award frst contracts later this month. Drilling will likely start in
spring 2016, with installation of templates and hook-up scheduled for September. Production is expected to start either year-end 2016 or early 2017 at
around 7,500 boe/d.
“Even though this is probably one of the smallest discoveries on the Norwegian shelf being developed the proftability is good, and the project is important to us,” said Øyvind Bratsberg, senior vice president technology and feld
development at Det norske.
Det norske operates in partnership with ConocoPhillips and Lundin Norway.
Petrobras says it deployed its frst wet christmas tree at the end of last year using cables in
the presalt area of the Santos basin.
The main innovation was the use of a subsea equipment support vessel (SESV) to install
the equipment on the Sapinhoá feld, instead
of a costlier drilling vessel. This resulted in a
time saving of around 10 days, leading to a
gain of more than $5 million. The 7-SPH-2D-SP
well is in a water depth of 2,130 m (6,988 ft).
Petrobras says the operation, which involved
lowering the christmas tree into position and
installing it on the wellhead using a suspended
cable, was carried out from an SESV using a
subsea equipment guidance system.
A drilling vessel, the company added, usually takes around 10 hours to lower a riser 1,000
m ( 3,280 ft) into the sea, so the time taken to
lower a christmas tree onto a well in 2,300 m
( 7,546 ft) of water is typically 40 hours.
SESVs, it claims, can perform the same maneuver in less than four hours, due to the cable
launch and return speed.
Petrobras already had used this technology
at depths of up to 2,000 m (6,562 ft). Following engineering studies, adaptations to the
SESV Skandi Santos allowed the vessel to
install equipment deeper, in water depths of
up to 2,300 m ( 7,544 ft).
The company has now chartered a second
SESV, which is being adapted to deploy equipment down to 2,500 m ( 8,202 ft), and this
should start operations during the second half
Manifold for the Bøyla feld.
Photo courtesy Det norske.
A rendering of
located in the North Sea.
Photo courtesy Statoil.
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