Dispersal
of Produced Formation Water from an Oil
Production Facility
The environmental effects of Produced
Formation Water (PFW) discharged
from offshore oil production platforms
into the marine environment is of
growing concern among environmental
regulators and industry. Analyses
of PFW discharges have found various
concentrations of hydrocarbons,
which are potentially toxic to marine
organisms. Environmental agencies
require petroleum companies to carry
out predictive dispersion modelling
to determine the likely distribution
and concentration of PFW after discharge
from a platform and its toxicity
to surrounding marine ecosystems. |
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Asia-Pacific ASA (APASA)
were commissioned by Apache Energy
to forecast the dispersal of PFW
from the "Stag" oil production
platform on the Northwest Shelf,
Australia. To simulate the PFW release
under environmental conditions,
APASA applied numerical models to
describe two important processes.
Firstly, the hydrodynamics of the
receiving waters was simulated by
Mr. Scott Langtry of GEMS (WA) using
the three-dimensional circulation
model, GCOM3D. Secondly, the mixing
and dispersion process was simulated
using the subsurface plume model,
MUDMAP. MUDMAP was used to assist
in understanding the dilution, mixing
and ultimate fate of PFW when discharged
from "Stag". Included
were estimates of the excursion
of the plume until concentrations
were mixed to levels well below
those of likely environmental concern.
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The information was used
by John Nielsen and Shane Chaplin, scientists
from International Risk Consultants (IRC),
to select appropriate sampling sites for
testing seawater concentrations of hydrocarbons
arising from discharged PFW. The results
provided by APASA assisted the IRC scientists
in locating and sampling within the plume
at different times during the day and during
different stages of tidal water movement.
IRC's field observations confirmed the MUDMAP
predictions of plume dynamics under average
prevailing conditions experienced in the
region during autumn.
Finally, peak concentration levels attained
from both the simulations and the laboratory
analysis from the field sampling, were used
by the Apache Energy environmental managers
to demonstrate that the total oil concentrations
are well below the Statutory Release Concentration
for platform PFW discharge in Western Australia.
The Maritime
and Port Authority of Singapore Takes Delivery
of OILMAP
ASA recently secured a contract
from the Maritime and Port Authority
of Singapore (MPA) to deliver the
latest version of our oil spill
trajectory and fates model; OILMAP.
As well as regulating and managing
the busiest port in the world in
terms of shipping tonnage, the MPA
has responsibility for a wide range
of marine environmental programmes
and maritime contingency plans in
Singapore. Being at the cross-road
of international shipping routes
and near one of the busiest waterway
in the world, MPA has an important
national responsibility for responding
to all spill incidents in and around
Singapore waters.
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In support of this requirement,
MPA has decided to upgrade their
existing spill response software
systems among other plans to help
meet both their future maritime
technical and operational needs.
Eoin Howlett and Roddy Thomas recently
visited Singapore to deliver OILMAP
and completed a comprehensive training
programme for key model users in
MPA's offices. The contract includes
the latest version of OILMAP's multiple
spill prediction trajectory and
back tracking models, and the integration
of a range of comprehensive environmental
databases. |
MPA developed high resolution
current data for the region which
was integrated into OILMAP.
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Personnel News
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Eoin Howlett, Sasha Zigic
and Brian King traveled to
Perth, Western Australia in early
May for a SIMAP training session
with environmental managers Libby
Howitt from Apache Energy and Scott
Langtry from GEMS (WA). Shown (from
left to right) are trainers and
intrepid SIMAP trainees: Libby,
Sasha, Brian, Eva Stejskal (environmental
manager for Apache), Scott and Eoin.
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Craig Swanson participated in the
North Kingstown High School Career Day 2000
on 12 April. Although he was not able to
convince any students to take up hydrodynamic
modeling as a career during his presentations
he did discuss the type of work that computer
modelers (of all kinds) do, what sorts of
background education is needed and examples
of the jobs these student can expect.
Craig Swanson and Matthew Ward
participated in Narragansett Bay Summit
2000 held 24-25 April. They hosted the ASA
display booth and participated in various
sessions on research, transportation, industrial
development, tourism and fisheries. The
summit was designed to bring the diverse
stakeholders together to discuss the state
of the bay, multiple uses and how competing
interests can come together to ensure that
the bay remains a unique resource.
Craig Swanson presented a talk entitled
Pollutant Fate and Transport Model of Salem
Sound at the State of the Sound: Current
Knowledge and Future Directions symposium
held 25 May. The purpose of the symposium
was to communicate to stakeholders the present
state of research about the sound and included
discussions about future issues to be addressed.
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Eoin Howlett visited with
Alan Hutchings, Emergency Planning
Officer for Dorset County Council,
UK. Dorset County Council use OILMAPX,
the Mapinfo version of OILMAP to
integrate pollution planning with
ARCS charts, UK Ordinance Survey
charts, Vertical Aerial photographs
and high resolution vector GIS information.
Alan Hutchings (right) and Steve
Spring worked with Eoin to customize
the system to meet Dorsets
specific needs. |
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Eoin Howlett traveled to
the lovely Isle of Man in the Irish
Sea in May to deliver a SARMAP upgrade
to the Isle of Man Coast Guard.
Captain Colin Finney and Erica Kermode
were trained on allocating response
resources for Search & Rescue
operations using SARMAP.
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Eric Anderson and Malcolm
Spaulding attended the 2000
Arctic and Marine Oilspill Program
(AMOP) in Vancouver, British Columbia
in June. They presented a paper
on deep water oil spill blowout
modeling which demonstrated ASA's
integration of gas hydrate formation
in several deep water blowout sensitivity
studies.
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June 14-16 Deborah French
presented her work on oil toxicity
at the 23rd annual Arctic and Marine
Oilspill Program(AMOP) Technical
Seminar in Vancouver, BC. She has
developed and validated an additive
model for the toxicity of the aromatic
components of oil. She also enjoyed
the scenery and social aspects of
the conference venue.
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Eric Anderson traveled to
Buenos Aires in April to deliver
OILMAP training to Total Argentina
personnel, together with Sergio
Wojda of Morken, S.A. who distributes
ASA's software in Argentina and
Luis Vila, who assists in the training
and application of these applications.
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Dr. Deborah French was a
co-presenter of a workshop in Kuwait
April 28-May 3 on marine NRDA procedures
and practices. She provided an overview
of methods for assessing damages
to marine biota and habitats, including
the use of modeling to evaluate
oil fates, impacts, and damages.
The models included in NRDA regulations
in the United States were described.
The workshop participants worked
through modeling of case examples,
both historical and for an existing
nearby site in Kuwait.
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In the light of the recent ERIKA
spill incident offshore France,
IFREMER recently invited Dr.
Deborah French to their Brest
office and present ASA's spill impact
analysis model system, SIMAP. IFREMER
is a public company under the administrative
supervision of various French Ministries
including Education, Research and
Technology, which particularly focuses
on agriculture and fisheries. Debbie
French and Roddy Thomas conducted
a one day SIMAP workshop with IFREMER
and other agencies, and included
a detailed overview of the system's
science, its validation, capabilities
and range of potential applications,
including to the ERIKA spill.
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Roddy Thomas recently attended
Environment and Water Quality India
2000, in Delhi, a conference specialising
in a wide range of marine and fresh
water quality problems presently
be addressed by both industry and
government in India. A number of
ASA's model systems were demonstrated
at ASA's stand including a number
of WQMAP applications covering industry
and domestic effluent discharge
dispersion, dredging and thermal
discharge dispersion studies.
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New Faces
Colleen Dalton is a scientist/
programmer with Applied Science
Associates, Inc. She received her
Bachelor of Science in Geology-Physics/Math
from Brown University in May, 2000.
Ms. Dalton brings a broad scientific
background that includes experience
with remote sensing, computer modeling
and environmental geophysics. At
Brown, she used seismic data from
earthquakes to model the earths
interior beneath eastern North America.
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Tim Giguere is a software
developer at Applied Science Associates.
He received his bachelor's degree
in Computer Engineering from The
University of Rhode Island in 2000.
Mr. Giguere has used a variety of
tools to develop Windows-based programs.
He is currently working on a number
of OILMAP and WQMAP tasks, including
integration of additional models,
new GIS functionality and data analysis
tools.
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Scott Veitch is currently
a second semester senior at The
University of Rhode Island. He is
working towards a bachelor's degree
in Ocean Engineering with an emphasis
in instrumentation. Courses of study
have included instrument design,
mechanical and geotechnical studies
emphasizing mechanical engineering
and design. Scott is kept busy on
a number of tasks including fieldwork,
instrument data analysis, computer
model input data construction, GIS
work, and managing ASAs computer
technology management and supervision.
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Nicole Whittier is a junior
engineer with Applied Science Associates,
Inc. She will be receiving a Bachelor's
of Science degree in Chemical Engineering
in December 2000 from The University
of Rhode Island. Ms. Whittier is
involved in environmental studies
at URI's Pollution Prevention Center
where her focus is the environmental
effects of chemical pollutants.
Ms. Whittier is currently evaluating
chemical processes and the fates
of chemical pollutants in aquatic
systems as part of ASAs continued
development of ChemMap.
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Dr. Hyun-Sook Kim, an oceanic
dynamics modeler with Applied Science
Associates, holds a Ph.D. in Physical
Oceanography from University of
Rhode Island. Since joining ASA,
she has been working on circulation
and water pollutant transport simulations
in coastal areas. Hyun-Sook has
extensive experience in development
and application of a barotropic
model in the Gulf Stream and a coupled
Physical and Biological model in
Georges Bank. She also specializes
in data assimilation, data collection
and analysis.
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Weddings at ASA
Our warm congratulations to Roddy
Thomas, ASA's UK director with
responsibility for our international
sales and marketing, and his wife
Victoria, who recently celebrated
their wedding in Chelsea, London
on 27 May. After a short honeymoon
on the Mediterranean island of Corsica
(see picture), they are setting
up home in St. Andrews, Scotland.
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There must have been something
in the air, another big ASA wedding
occurred on April 22 when our accounting
manager, Linda Nolan married
Gary Gagne. Despite stormy winds
and torrential rain, they happily
tied the knot at 6am on Narragansett
Beach.
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