American Oil and Gas Reporter - October 2016 - 67

SpecialReport: Gulf of Mexico Update
analyses for the reservoirs in the wells
also supported the reservoir compartment
and connectivity interpretation.
Integrating Higher-Order Details
Dual-coil seismic data enabled us to
map new faults and extract higher-order
reservoir details. A multifault seal analysis
provided information on fault transmissibility, which was used dynamically
in the flow simulation model. Integrating
information from seismic with rock
properties derived from logs, cores and
outcrop analogs yielded a better
understanding of variabilities in reservoir
parameters and their portrayal in the
geologic model. Tools such as Geo2Flow
helped us combine rock and fluid
properties to estimate fluid contacts.
All of these data and tools led to

GOPAL
MOHAPATRA

Gopal Mohapatra is a geophysical
adviser at Hess Corporation in Houston,
where he is involved in generating exploration leads, maturing leads into
drillable prospects, and drilling in the
deepwater Gulf of Mexico. He is the
lead geophysicist for the Stampede project looking after seismic processing,
salt/velocity model building, seismic interpretation, and well planning and
monitoring. Before joining Hess in 2007,
Mohapatra served for 10 years at ExxonMobil as a deepwater exploration geophysicist in the Gulf of Mexico and Angola. He holds a B.S. and an M.S. in
geoscience/geophysics from IIT Kharagpur, a Ph.D. in geophysics from the
University of Arizona, and an M.B.A.
in international finance from the University of Houston.

building a more realistic geologic
simulation model and achieving a better
understanding of the uncertainties
associated with developing the Stampede
Field. Based on the results of the
simulation model, the field development
plan could be finalized with the six
producing and four injection wells as the
base case.
The integrated workflow applied to
optimize the development plan
demonstrates that dual-coil seismic data
can provide a better and more detailed
picture of the subsurface, and that compartmentalization caused by faulting can
be represented more realistically in the
model through FTMs. An MPS approach
is an ideal way to incorporate log, core
and analog data into facies population.
In the absence of penetrated OWCs,

ANDRY
NABASIR

Andry Nabasir is a geological adviser
at Hess Corporation, focused on deepwater
field development projects in the Gulf of
Mexico. Before joining Hess in 2012, he
served as a geological adviser at Chevron
in the United States, Angola and Indonesia.
He began his career in 1990 as a development/well-site geologist at PT Caltex
Pacific Indonesia, and subsequently served
the company as senior development geologist.

the project showed that compartments
and OWC estimates were better constrained by integrating pressure, water
saturation and geochemistry data along
with seismic interpretation.
Going forward, we intend to update
the model with data every time we drill a
development well. This should help refine
the drilling and completion plans for
future wells and optimize the performance
of the Stampede Field.
r
Editor's Note: The authors acknowledge WesternGeco for permission to use
the seismic images in this article, as well
as the contributions of subject matter experts on the Stampede project management
team, and in the technology and excellence
group at Hess.

STEVE
STRAUSS

Steve Strauss is senior reservoir engineering adviser at Hess Corporation.
He joined Hess in 2005 working on
Bakken Shale and deepwater Gulf of
Mexico development projects. After two
years as senior operations engineer for
conventional and unconventional plays
at Vitruvian Exploration, Strauss returned
to Hess in 2012. He began his career at
Mobil, followed by Conoco, where he
served for 21 years as an engineer and
senior reservoir engineer. Strauss holds
a B.S. in petroleum engineering from
Texas A&M University.

OCTOBER 2016 67



Table of Contents for the Digital Edition of American Oil and Gas Reporter - October 2016

Contents
American Oil and Gas Reporter - October 2016 - Cover1
American Oil and Gas Reporter - October 2016 - Cover2
American Oil and Gas Reporter - October 2016 - Contents
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