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IPTC 2007: International Petroleum Technology Conference
- Conference date: 04 Dec 2007 - 06 Dec 2007
- Location: Dubai, United Arab Emirates
- Published: 04 December 2007
61 - 80 of 267 results
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Oil Dehydration Improved by Dual Frequency Electrostatic Process
Authors J. Armstrong and G.W. SamsWith the world’s production of crude oil becoming heavier
and moving offshore into deeper waters, the need for efficient,
compact separation and dehydration is essential. Application
of improved electrostatic dehydration technologies has the
potential to have a major impact in reducing oil production
costs. Improved hydraulic efficiency, the use of alternative
electrodes and the application of dual frequency modulation to
the electrostatic power supply shows significant production
benefits.
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Plan View Seismic Interpretation—Applications in Kuwait
Authors M.G. Kumpas, N.S. Rao and A. Al-DarmiDeviation from exploration for conventional, Albian age,
clastic plays towards carbonate plays of a stratigraphic
nature has prompted the use of plan view - horizontal
seismic displays in the interpretation process as an
additional means of data visualization enhancement.
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Social Responsibilities and Challenges Confronting Oil Industry
Authors M.A. Brohi, B.K. Sahito, M.J. Soomro and G.A. MashoriThe study argues about inevitable social responsibilities and
challenges faced by the oil companies. Smog in the inner cities,
oil spillage, chemical disposal, climate changes, environmental
pollution, local recruitment and toxic wastes are mammoth
challenges for oil and gas companies to face. Oil industry has to
respond to the environmental issues in general and climate
changes in particular, because the ultimate goal of the business
is to maximize the profit and also contribute to the social
welfare of the community.
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Probabilistic Field Development in Presence of Uncertainty
Authors S. Passone and G.J. McRaeField developments are characterized by high levels of
uncertainty and dynamic interconnected decisions with a
complex value description. Typical decisions to be made
within the context of field development include duration of
each development phase, allocation of resources, data
acquisition, the use of expensive novel technologies and
project impact on the overall company portfolio.
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Large Scale Acid Gas Injection Facilities for Gas Disposal
Authors D.A. Kenefake, D.J. Hawrysz and A. Al-MohannadiAcid Gas Injection (AGI) has commenced at both Ras
Laffan LNG Company Limited's RasGas complex (RasGas
AGI) within the Ras Lafan Industrial City, Qatar and at
ExxonMobil Production Company's LaBarge Treating Facility
(LaBarge AGI) in southwestern Wyoming, United States.
Acid gases, nominally consisting of hydrogen sulfide (H2S)
and carbon dioxide (CO2), are naturally occurring, nonhydrocarbon
gases that can be associated with oil and gas
production. The successful commissioning, startup, and
operation of these facilities demonstrate feasibility and safe
operability of AGI technology to dispose of waste gases on a
large scale.
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Development of the Adriatic LNG Terminal Deep Casting Basin Construction Site
Authors B. Wesselink and B. TokyayThe world’s first bottom founded offshore liquefied natural
gas (LNG) storage and re-gasification terminal is under
development by affiliates of Qatar Terminal Limited,
ExxonMobil and Edison for installation in the Northern
Adriatic, 15 km east of Porto Levante, Italy. This paper will
describe the unique challenges faced and effort undertaken to
locate and transform a casting basin to a world class
construction and integration site, including removal of the
earthen wall prior to tow-out of the terminal.
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Health Risk Assessment as Input to Design
More LessThe paper will give an overview of how health risk assessment
as input to design can contribute to better and safer work
places with low health risk. This is based on the current
practice in the Norwegian petroleum industry, focusing on
health risk assessment and challenges in the working
environment from the early design phases. Furthermore the
paper describes how possible health risk and future working
environment conditions at the plant during operations are
assessed systematically during design and construction.
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Safe Marine Access to Platforms in the Southern North Sea
By A.R. JonesFrom the early days of offshore oil & gas production in the
Southern North Sea (SNS), helicopters have been used for the
transportation of personnel to and from platforms.
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Evaluation of Deep, Low Frequency Acquisition Techniques on Deep Target Imaging
Authors M.W. Norris and M.L. JohnsonA suite of air gun configurations was tested in the Gulf of
Mexico using a MEMS based OBC acquisition system. One
advantage of this acquisition system was the significantly
improved low frequency response of the sensors and
instrumentation. The improved low frequency response
allowed the response of the air gun configurations to be
characterized to 1 Hz and below.
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Subsea LNG Transfer System™
Authors W.S. Mathews, M.C. Gentry and M.E. EhrhardtMany offshore liquefied natural gas (LNG) import terminal
designs have been proposed by industry in the last several
years. Most base-load offshore LNG import terminals
currently under development utilize either a bottom-founded
structure, such as a gravity base or a jacket structure, or a
floating structure such as a moored ship-shape hull. In either
case, LNG transfer from the LNG carrier (LNGC) to the LNG
import terminal is performed through side-by-side offloading.
LNG transfer is accomplished with loading arms equipped
with constant motion swivels and a wire-guided connection
system. Side-by-side offloading has acceptable availability
for mild environmental conditions. However, when applied in
more severe environments, this type of LNG transfer system
can limit the terminal throughput because of low berthing and
offloading availability.
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Carbonate Rock Physics: Analytical Models and Validations Using Computational Approaches and Lab/Log Measurements
Authors S. Xu, G. Chen, Y. Zhu, J. Zhang, M. Payne, M. Deffenbaugh, L. Song and J. DunsmuirDeveloping robust, accurate, and practical carbonate rock
physics models is a crucial step for successful geophysical
applications in carbonate reservoirs. We extended the Xu-
White model, originally designed for clastic rocks, to
carbonates and observed some promising results. For example,
our shear-wave prediction method was accurate after the
mineralogy effect was correctly handled. However, several
technical issues still need to be addressed to better understand
the seismic response to carbonate rock properties.
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Management of High Pressure Water Flows While Drilling a Large Gas Reservoir
Authors J.W. Witt, J.Z. Gahr, M.A. Aly and D.W. SuperAn extensive drilling program is ongoing for the development
of Qatar’s North Field. This massive offshore carbonate field
contains natural gas produced from the thick Khuff reservoir
at approximately 10,000 ft true vertical depth (TVD). Capable
of flow of over 200 MMScf/D each, these complex wells pose
considerable challenges to both drilling and completion
operations.
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Simulating Karstic Conduits as Wells in a Commercial Reservoir Simulator
Authors M. Herriou and J.W. BarkerKarst is a generic term for the effects of meteoric (rain) water
on carbonate rocks. Resulting features include rock
dissolution, conduits, sink-holes, etc, which may have
extremely high permeability. Fluid flow simulations in such
environments are therefore very challenging – conventional
reservoir simulators often experience convergence problems
and run times of several days are not uncommon even for
models with a modest number of grid cells.
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Long-Term Field Development Opportunity Assessment Using Horizontal Wells in a Thin, Carbonate Reservoir of the Greater Burgan Field, Kuwait
Authors A.K. Ambastha, D. Al Matar and E. MaMauddud reservoir in the Greater Burgan field is a thin,
carbonate reservoir containing light oil in a 10-20 ft target
zone with “good” porosity. Matrix permeability is low and
natural fracture density can be variable in this reservoir. Thus,
this reservoir must be exploited using horizontal wells. In the
early 1990’s, 16 horizontal wells were drilled in this reservoir.
Five more horizontal wells have been drilled in the last 2 years
in an effort to scope out the long-term potential of this
reservoir.
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The Road To Efficient Wide-Azimuth High-Density 3D Land Vibroseis Acquisition
Authors J.J. Postel, J. Meunier, T. Bianchi and A. DepeyrasIt is becoming increasingly widely accepted that wide-azimuth
3D acquisition is the best way to improve imaging of complex
and subtle traps. It is also claimed that high-density point
source/point receiver acquisition constitutes the ultimate
seismic acquisition technique. Clearly, both techniques require
a considerable increase in equipment and density of both
source and receiver points.
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The In Salah Gas CO2 Storage Project
By I.W. WrightIn Salah Gas is a joint venture of BP, Sonatrach and Statoil, which started in July 2004, producing 900bcf/d gas for
sale in Europe. The natural gas contains up to 10%CO2, which has to be reduced to 0.3% before the gas is sold.
Hence, 1 million tonnes/year CO2 is produced. Rather than vent that CO2 to the atmosphere (business as usual), this
project re-injects it into the Krechba Carboniferous Sandstone reservoir via three horizontal wells at a depth of
1,900metres. CO2 injection started in August 2004 and over the life of the project, 17million tonnes CO2 will be
geologically stored at a cost of $100mm ($6/tonne CO2 avoided). This project is an industrial-scale demonstration of
CO2 geological storage and is the first industrial-scale project in the world to store CO2 in the water leg of a gas
reservoir.
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A Combined Well Completion and Flow Dynamic Modeling for a Dual-Lateral Well Load-up Investigation
Authors Y. Tang and W.S. HuangA dual-lateral well was completed in a Chevron subsea
condensate field with high peak rate. Within one year, the
production significantly declined with high water-cut. The
well was shut down and then brought back to production,
observing much reduced flow rate for three days and
eventually stopped flow.
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Spatial Variation of San Juan Basin Fruitland Coalbed Methane Pressure Dependent Permeability: Magnitude and Functional Form
Authors R.R. Gierhart, C.R. Clarkson and J.P. SeidleThe San Juan basin Fruitland coalbed methane (CBM)
resource is the most significant CBM play discovered in the
world to date and comprises areas within both Colorado and
New Mexico of the United States. It contains three distinctly
different performance areas within the 6,800 mile2 (17,600
km2) enclosed by the Fruitland outcrop. Two of these areas are
considered in this topic: “Fairway” and “Colorado Type II”.
Explaining well performance in these areas has required the
examination of a mechanism whereby coal permeability
increases over time. Field data and pressure transient analysis
(PTA) for Fairway wells have revealed that coal permeability
does increase over time and is an exponential function of
reservoir pressure depletion.
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Improving Reservoir Modeling With Global Scale-up
Authors X.H. Wu, S.S. Ghai, M.T. Stone, R.R. Parashkevov and S.L. LyonsLinking a fine-scale geologic description to a coarse-scale
reservoir simulation model requires accurate and efficient
scale-up. Advanced techniques are necessary to construct
reservoir models that incorporate geologic and production data
gathered at different scales.
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An Integrated Evaluation of Successful Acid Fracturing Treatment in a Deep Carbonate Reservoir Having High Asphaltene Content in Burgan Field, Kuwait
Authors Q. Dashti, M. Kabir, R. Vagesna, F. Al-Ruhaimani and H. LiuThis paper presents the process of candidate well selection,
design, execution and evaluation that lead to the successful
implementation of acid fracturing treatment in Marrat field.
The acid fracturing treatment is quite challenging due to
presence of high pressure/high temperature and high
asphaltene content in the crude oil which renders the situation
even more difficult because of fluid incompatibility issues.
The formation tends to produce oil with asphaltene content
when the flowing bottomhole pressure is drawn below the
Asphalting Onset Pressure (AOP). An engineering solution
was urgently needed to enhance the productivity of wells and
to mitigate the aspheltene deposition issue by allowing the
wells to produce above the AOP. The option of acid fracturing
was evaluated and found to be feasible to alleviate the
problems.
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