HP/HT Client Brochure - Halliburton

HIGH PRESSURE/HIGH TEMPERATURE (HP/HT)
Controlling Well Direction While Opening Hole in
HP/HT Deepwater Vertical Well Saves Customer Millions
Location: Mediterranean
Challenge
A vertical well needed to be drilled in the deepwater,
high pressure high temperature (HP/HT) environment
of the Mediterranean Sea, where maximum temperature
and pressure were approximately 390°F (199°C) and
20,000 psi (138 MPa). Several casing strings would be
required and hole opening would be needed for the
majority of hole sections. Also, hole verticality, especially
in the upper section, was considered crucial to minimize
the potential dangers of excessive torque and drag.
Halliburton Solution
The Geo-Pilot® system was run in the vertical drilling
mode in tandem with the under reamer for several
different intervals. The Geo-Pilot system with Geo-Span®
downlink service was mobilized where historically in
offset wells, formations had naturally built angle. At
the final total depth of approximately 22,000 feet
(6,700 m), the offset from the wellhead was below
110 ft (33.5 m), giving an average inclination from
the surface to bottomhole location of only 0.3°.
Economic Value Created
Being able to control well direction and open the hole
at the same time saved the customer an estimated
US $1.8 million to US $4.5 million, depending on
what other method of drilling could have been used.
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