The Hebron Project reached a significant milestone on July 22 when tugboats pulled the 180,000-tonne gravity-based structure (GBS) to a deepwater-construction site from a dry dock in Newfoundland and Labrador.
Chevron Canada Limited owns a 26.6 percent working interest in Hebron and provides support to ExxonMobil, the operator.
“ExxonMobil has been an exemplary operator and our Atlantic Canada team has done a great job supporting them,” said Chevron Canada President Jeff Lehrmann. “The tow-out was a major engineering and logistical feat. The success of the tow demonstrates the planning, hard work and commitment of everyone involved.”
The Hebron GBS is shown being towed from dry dock to the deepwater construction site at Bull Arm, NL, on July 22.
First discovered in 1980, Hebron is situated about 350 km southeast of St. John’s, NL, in 92 metres of water and is estimated to contain more than 700 million barrels of recoverable resources.
The GBS is a reinforced concrete structure designed to withstand sea ice, icebergs and meteorological and oceanographic conditions. It will be capable of storing approximately 1.2 million barrels of crude oil and will support an integrated topsides deck that includes a living quarters and facilities for drilling and production.
The platform is designed for an oil production rate of 150,000 barrels of oil per day. First oil is scheduled to be produced before the end of 2017.
“We reached this point in the project without anyone incurring a serious injury while working at various sites for engineering, GBS construction and topsides module fabrication,” said Chevron’s Atlantic Canada Manager Mark MacLeod. “That is the most significant accomplishment. Congratulations to the entire team for its relentless pursuit of a safe workplace.”
Working in Deepwater
GBS construction activities will continue at the deepwater site, which has a depth of about 150 metres. The floating GBS will be slip-formed to a height of 120 metres. After the GBS is completed, the topsides will floated over at the deepwater site and set on the GBS to form the complete platform that will be installed at the Hebron field.
In-province employment is expected to peak at 5,000 this year.
The Hebron project co-venturers are ExxonMobil Canada Properties (operator), Chevron Canada Limited, Suncor Energy Inc., Statoil Canada Ltd. and Nalcor Energy Oil and Gas Inc.