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IPTC 2009: International Petroleum Technology Conference
- Conference date: 07 Dec 2009 - 09 Dec 2009
- Location: Doha, Qatar
- Published: 07 December 2009
41 - 60 of 370 results
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Case Study of Successful Matrix Stimulation of High-Water-Cut Wells in Dubai Offshore Fields
Authors F. Shnaib, A.M. Desouky, N. Mehrotra, M.M. Kuthubdeen, G. Rutzinger, T.C. Judd and R.P. RebelloThe candidate selection criteria, job design, and improved implementation techniques are important parameters for success in
remedial acidization jobs in mature fields.
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Advancement in Drilling Increases Penetration Rates in Deep, Hard and Abrasive East Texas Formation
More LessThis paper details the modifications performed and knowledge gained in 2007 and 2008 while drilling four underbalanced
(UB) vertical gas wells in the Travis Peak formation of the western east Texas deep Bossier play in the Amoroso field, using
jointed pipe. In spite of continuous improvements in drilling bit performance and better drilling practices, operators still face
the “80-20 rule.” Extremely hard and abrasive intervals represent about 20% of the total footage drilled, and they take about
80% of the time to drill out. Performance UB drilling (UBD) technology was used to increase the rate of penetration (ROP)
through the formation at depths of 9,800 ft (2,987 m) and greater. The surface and the intermediate casing intervals were
drilled conventionally. The next section (8 1/2-in. hole size, using hammer and tricone bits) was drilled using UBD
techniques that used straight air or membrane nitrogen (N2).
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Field-Application Results of HMWSP in Western Siberia: Design Optimization, Conclusions, and Recommendations
Authors O. Jaripatke, D. Dalrymple, A. Prokhorov, M. Gaponov and A. FakhreevaHistorically, hydraulic-fracture stimulation of zones with directly underlying waters has not been considered a practical
method for improved oil recovery.
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Process Methodological relationship between RAM and QRA
Authors A. Petrone, L. Scataglini and F. FabioDuring the whole Project Life Cycle of an Oil or Gas plant, Asset and Risk Management are the key drivers for making the
project profitable and in the meanwhile compliant with Health Safety and Environmental issues.
Risk management aims at controlling risks to protect people, environment and company assets.
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Separation and Recycling of Used Oil-Based Drilling Fluids
Authors R.S. Farinato, H. Masias, D. Garcia, R. Bingham and G. AntleA novel approach has been taken to separating, recovering and recycling the oil-continuous phase from used oil-based
drilling fluids. The method is based on destabilizing and aggregating the suspended solids and brine droplets through the
application of polymers and surfactants in a controlled mixing device. The aggregated material may then be centrifugally
separated using traditional solids-control equipment. This allows recovery of the oil-continuous phase, which may then be
recycled into another oil-based drilling fluid. Laboratory data and field case studies will be presented that substantiate the
efficacy of this solid-liquid separation method. Microscopic analyses of the aggregated solids support a proposed mechanism
based on preferential wettability.
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Hibernia Q Block - Waterflooding to Increase Field Liquid Recovery with the Presence of a Gas Cap
Authors R. Stright, G. Stylianides, A. Stackel and O. OzenThe Hibernia field, located 315 km offshore Newfoundland and Labrador, Canada, began production in November 1997.
The southern part of the field is a waterflood development, with seawater injection used for pressure maintenance. The
northernmost portion of the field is a gasflood development that maintains pressure by re-injecting gas produced from the
waterflood for voidage balance. As the field matures, water production from the waterflood region is increasing significantly
and therefore the associated gas produced from these oil wells has been declining. As the availability of gas from the
waterflood area decreases, gasflood region production also decreases due to the declining amount of produced gas available
for injection for pressure maintenance. Another source of gas was needed to maximize gasflood region production.
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Gas-Assisted Gravity Drainage (GAGD) Process for Improved Oil Recovery
Authors N. Kasiri and A. BashiriWater Alternating Gas injection (WAG) or Simultaneous Water and Gas Injection (SWAG) floods have been proposed as very
good solution to overcome gravity segregation and better EOR performance in compare to conventional continuous gas
injection (CGI). However WAG-Based processes cause some problems associated with increased water saturation including
diminished gas injectivity. As an effective alternative for WAG, Gas Assisted Gravity Drainage (GAGD) for conventional
reservoirs has been developed (US Patent 2006/0289157) that takes advantage of the natural segregation of gas from liquid
hydrocarbon during injection. The GAGD process consists of placing a horizontal producer near the bottom of oil column and
injecting gas through existing vertical wells. As the injected gas rises to form a gas zone, oil and water drain down to the
horizontal producer. Application of GAGD for IOR in naturally fractured reservoir is discussed here based on some facts and
figures.
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Hydrate Formation and Prevention in Gas Condensate Pipeline
Authors J. Ge and M.A. RasheedA gas condensate pipeline transports gas from an onshore Gas/Oil Separation Plant (GOSP) to a Processing Gas Plant. Gas
that flows into the pipeline is transported directly from the GOSP’s separator after compression without any further
dehydration process. As the gas temperature inside the pipeline begins to drop, water and condensate drop out from the gas.
The pipeline is flowing at a rate lower than its desired flow rate. Significant liquids (condensate and water) are accumulated
in the pipeline due to the low flow rate.
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Integration of Biodiversity Conservation into Site Operations: Methodological Approach and Field Projects
Authors P.M. Pedroni, J. M. Deffis and C. Alberti di CatenajaEngaging with biodiversity and integrating its conservation into operational practices has become increasingly
important for the energy sector since the overlap between geographical areas of biodiversity value and oil and gas
reserves has significantly increased, worldwide, in the last decade.
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Acidizing Treatments for Tight Gas Sandstone Reservoirs
Authors H.A. Al-Anazi, W.J. Assiri, B.H. Al-Malki and A.A. Al-KanaanStimulation of tight gas sandstone reservoirs is a challenge due to many variables
contributed into acidizing efficiency such acids type, concentration, volume, stages,
injection rate, reservoir temperature, fluids, and heterogeneity, clay type and content, and
soaking time. The presence of authigenic clays in reservoirs necessitates proper design of
acid treatment to avoid undesirable interaction of these clays with acids and released to
cause pore plugging. Therefore, stimulation fluids need to be properly selected to avoid
potential adverse results in these tight reservoirs.
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Deep Water Drilling: Full Pressure Profile Control in Open Hole Section Using Model Predictive Control
Authors Ø. Breyholtz and G. NygaardManaged pressure drilling has been introduced to reduce pressure related incidents related to targeting narrow pressure
margins prospects or deep water prospects. The full pressure profile method, which will be presented in detail in this paper,
classifies as a managed pressure drilling method, and is an extension of the well known constant bottom hole method. A case
study on a deep water drilling system is presented to demonstrate how model predictive control can simultaneously control the
height of the mud column and the flow rate to control the bottom hole pressure while trying to maintain an optimal casing shoe
pressure. A model predictive controller is implemented to fully automate the pressure and flow dynamics. Computer
simulations are presented to illustrate the potential of the chosen control strategy. Advantages and limitations associated with
the full pressure profile control method is analyzed and discussed.
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CO2 Management at ExxonMobil's LaBarge Field, Wyoming, USA
Authors M.E. Parker, S. Northrop, J.A. R.E. Foglesong and W.T. DuncanProduction of natural gas from the LaBarge field in southwest Wyoming began in 1986. This gas
contains high concentrations of carbon dioxide (CO2), and from the very beginning, ExxonMobil has
successfully implemented several technologies and approaches to effectively manage the substantial
volumes of CO2 associated with its production. Many of the technologies and approaches used for
managing CO2 at LaBarge are examples of technologies and approaches being proposed for use in
carbon capture and storage (CCS) by other industries.
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Simulating the Permeability Reduction due to Asphaltene Deposition in Porous Media
Authors A. Fadili, N. Alizadeh, E. Leung, A. Khaksar and S. AshooriA static to dynamic approach to modeling Asphaltenes has been developed and validated. A new algorithm for static
asphaltene modeling uses a multi-solid thermodynamics approach where the equality of fugacity for each component and
phase is applied at equilibrium conditions.
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Dynamic Asphaltene Behavior for Gas Injection Risk Analysis
Authors H. Yonebayashi, A. Al Mutairi, A. Al Habshi and D. UrasakiAsphaltene study is now becoming a regular menu as a part of gas injection studies1-11. The asphaltene onset pressure (AOP) is
one of the most important factors to understand asphaltene precipitating behavior. The SDS (solid detection system) based on
light scattering technique has been quite popular and widely used in all over the world1,7-9,12-15. The simple experiments to
measure AOP are usually conducted using mixture of reservoir fluid and injection gas, and various gas mixing volume are
assumed to be investigated. These various experimental specification of gas mixing volume are useful to understand
asphaltene risks during gas injection projects. However, what this investigation can show is just a static asphaltene behavior,
and sometimes might overlook true asphaltene risks.
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Downhole Fluid Density for Water-Base Mud Formation-Water Sampling with Wireline Formation Tester
Authors C. Mas, M. Ardilla and K.C. KinA vibrating rod downhole fluid density device with the unique perpendicular oscillation modes provides in-situ fluid density
measurements that improve a wireline formation tester’s pressure, mobility, downhole fluid analysis, and sampling
applications.
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Development & Usages of Geographical Information System (GIS) at Ras Laffan Industrial City
Authors P. Kumar, A.Q. Qaddumi, K.B. Khalifa Al Thani, S. Sameer and M. BokhariInformation systems which allows processing and presentation of location
specific graphic and non-graphic data are technically termed as
Geographic Information Systems (GIS). Geography matters a lot in
industrial (gas infrastructure) business city wherein its out side plant
infrastructure assets are spread on geographic layout plan. At QP-RLIC
GIS has been developed as a vital business tool for locating, planning
and managing its sprawling industrial infrastructure layout with immense
infrastructure on ground and utilities buried below.
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Ergonomics, Software and Geophysical Interpretation
Authors S.B. Wood, S.C. Peres, M. Akladios, P. Kortum and A. MuddimerRepetitive Strain Injury (RSI) negatively impacts the health and productivity of individuals and
corporations. In 2006 the Bureau of Labor and Statistics reported that Repetitive Strain Injuries accounted for
30% of total workplace injuries and illnesses in America. RSI burdens American employers with annual costs as
high as twenty billion dollars [2]. Many companies operate internal programs that attempt to mitigate the risk of
RSI to improve the health and well being of their employees. Existing corporate programs typically focus on
physical workstation set up and mechanisms that assist workers to take breaks at regular intervals. These
strategies can be successful but they require active participation from workers to be effective and they do not
examine one of the fundamental activities users perform while sitting at a computer, which is interacting with
computer software.
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Sour Weight Loss Corrosion Management: An Extensive Review of Present Field Experience
By M. BonisA wide review of field experience on Sour Weight Loss Ccorrosion (SWLC) is summarized in this paper, from 127 distinct
field cases documented either from in house experience or external sources covering oil and gas producing facilities, wells and
surface facilities. This gives access to a large practical background and to quantitative information which allows better
documenting corrosion rates, discriminating corrosion factors and lastly recommending consistent mitigation solutions.
It is shown that SWLC is frequently much lower than Sweet corrosion in comparable operating conditions except for the H2S
content. Unfortunately there are specific and still not easily predictable conditions which may lead to very severe localized
corrosion. Although quite rare, these cases are impressive as corrosion rates are currently above 10 mm/yr, even in apparently
mild conditions.
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Coupled Reactive Transport Models of Acid Gas Injection (AGI) in Siliciclastic and Carbonate Reservoirs: Understanding Fundamental Controls on Injection Performance and Storage Security
Authors Y. Xiao, W. Mazea, G. Teletzkea, J. Wilkinsona, T. Xub and K. PruessbOne of the commonly proposed methods for reducing CO2 and other acid gas emissions is to inject them in petroleum
reservoirs for Enhanced Oil Recovery (EOR) or to store them in deep saline aquifers. Any successful acid gas injection (AGI)
project needs to meet three key objectives: 1) Safety, Health and Environment (SHE); 2) efficient sweep of pore space; and 3)
reliability of operations. A fundamental approach that couples process-based models with laboratory data and field
observations will allow us to better understand the key controls on AGI performance and storage security and therefore make
better design decisions from appraisal to development to monitoring.
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Evaluating Corrosion Inhibitors for Sour Gas Subsea Pipelines
Authors H. Sun, D. Blumer, M. Swidzinski and J. DavisUsing subsea carbon steel pipelines to transport wet sour gas possesses huge challenges to the operators to maintain the high
level of the Assets and Operating Integrity. In many cases, carbon steel is still the primary choice for the subsea pipeline
material.
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