American Oil and Gas Reporter - April 2015 - 110

SpecialReport: Offshore Tech Trends
al knowledge."
The cooperative spirit extended to Hess' co-owner, Chevron,
as well as all the key service and technology providers. "At every
point in the development timeline, there were numerous examples of teamwork between Hess, Chevron, and all the various contractors," McEvilly relates. "It takes time to gain the trust factor, and we did that with Chevron. We kept (Chevron team members) engaged and utilized their experience throughout.
"We also have a great deal of confidence in our technology
partners," he adds. "Close collaboration among all parties involved
is a major reason for Tubular Bells' success."
The teamwork also enabled Hess to bring in the project on
budget, he points out, although final budget figures could
change if the co-owners add more wells, McEvilly points out.
"Considering that some offshore 'megaprojects' have been
mega budget busters, our achievement of being on budget is commendable," he insists.
The 7,500-ton, three-level topsides departed Houma, La., in
March 2014 in route to the Tubular Bells Field. The FPS was the
first classic spar facility to be built entirely in the United States,
with the topsides and hull fabrication work creating thousands
of jobs in multiple states.

piles and structures), Weatherford (subsea control system),
Oceaneering (umbilical system), FMC (subsea tree and equipment), Subsea 7 (installation of umbilicals, flying leads, production manifold and jumpers), and ClampOn (subsea acoustic sand
and pig detection). Tenaris provided almost nine miles of eightinch line pipe and the riser pipe.
The subsea tree is critical to successfully meeting the production challenges associated with the high pressures and temperatures, McEvilly says. The project uses an enhanced vertical deepwater tree (EVDT) from FMC that is similar in design to the tree
that set a water depth record of 9,627 feet at Shell's Tobago Field
in the Gulf of Mexico Perdido Foldbelt.
"It is a monobore system that combines the safety and reliability features of a vertical tree with the operational benefits of
a horizontal tree, so it gives us the best of both worlds, so to speak,"
McEvilly remarks. "The tree is rated to 350 degrees and 15,000
psi. Working with FMC as one of the trusted partners in the Tubular Bells project team, we optimized the EVDT for this implementation."
Trust and teamwork not only epitomize the engineering work
on the subsea aspects of the project, but were the hallmarks of
all phases of the Tubular Bells development, McEvilly holds.
"Hess' drilling and subsurface development teams worked hand
in hand to ensure success without compromising safety to determine the bottom-hole locations and other key factors during
drilling, and that kind of teamwork continued all the way
through to commissioning the production system," he says. "Hess
had the insight to form lean and efficient teams of experienced
people empowered to make decisions, and allowed them to leverage the skills of the suppliers and contractors to extract addition110 THE AMERICAN OIL & GAS REPORTER

Rewarding Achievement

The success of Tubular Bells is even more rewarding, given
that it is the Hess' first operated deepwater development with an
FPS in the Gulf of Mexico. "To put this project in perspective,
Hess never had a deepwater floating facility in the Gulf prior to
Tubular Bells, and it has been 10 years since our initial success
offshore Equatorial Guinea on the Okume complex. It is very satisfying from our end," McEvilly affirms.
In addition to holding down costs and working together, safety was a major priority as well during all phases of field development, including FPS construction and installation, he goes on.
"Success on Tubular Bells did not come by compromising on safety," McEvilly insists. "We had a very good safety record on this
project, including a total recordable incident rate of 0.29 incidences
per 200,000 man hours. There were no catastrophic incidents, no
damage to the facility, and no lost-time incidents.

The Saipem 7000 heavy‐lift vessel installs the topsides on the
classic spar hull stationed in more than 4,000 feet of water. Production operations commenced within eight months of the date
of this photo, completing a fast-track schedule that brought Tubular Bells from project sanctioning to first oil in the span of
three years.



American Oil and Gas Reporter - April 2015

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

Contents
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