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IOR 2007 - 14th European Symposium on Improved Oil Recovery
- Conference date: 22 Apr 2007 - 24 Apr 2007
- Location: Cairo, Egypt
- Published: 22 April 2007
47 results
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Development and Optimization of Issaran Oil Field
Authors T. Wnorowski, M.A. Badawy, J. Donnelly and D. BrownA01 Development and Optimization of Issaran Oil Field T. Wnorowski* (Rally Energy Corp.) M.A. Badawy (General Petroleum Company) J. Donnelly (Rally Energy Corp.) & D. Brown (Rally Energy Corp.) SUMMARY Issaran is a heavy oil field located in the Arab Republic of Egypt adjacent to the Gulf of Suez. The field depends on its natural fracture system and produced water management for optimal oil deliverability. It is believed that there is a complex pressure support system that consists of one or more aquifers. The fracture system serves as the primary production conduit. Due to well established relative mobility effects water
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Ula WAG – World Class EOR – Breathing the Gas of Life into a Mature Oil Field
Authors C. de Jongh, E. Lund, M. Hole and J. DuncanA04 Ula WAG – World Class EOR – Breathing the Gas of Life into a Mature Oil Field C. de Jongh* (BP Norway) E. Lund (BP) M. Hole (BP Norway) & J. Duncan (BP Norway) SUMMARY The Ula field is located in the Norwegian sector of the North Sea. The field has a STOOIP of around 1 billion stb and has been on production since 1986; water injection started in 1988. In the mid-nineties the field was on a steep waterflood decline with less than a decade of future. Ula WAG (Water Alternating Gas)was started up in 1998 and targets
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The Tampen Area IOR Program
Authors S.R. Jakobsen, A. Hesjedal and I. SvorstølA05 The Tampen Area IOR Program S.R. Jakobsen* (Statoil) A. Hesjedal (Statoil) & I. Svorstøl (Statoil) SUMMARY Statoil initiated in 2004 an IOR initiative aiming at increasing the oil recovery from all it's Norwegian oil fields. As a part of this initiative Statoil's Tampen field cluster in the Northern North sea reorganized it's subsurface organisation to focus it's emphasis on this huge task. A screening process was performed and ambitious goals were established both on field- and area level. One of the conclusions from the screening study was that the maturation process from immature ideas to well established IOR-actions was
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IOR Strategies for the Final Stage of the Development of Chutyrsko-Kiengopskoye Oil Field
Authors A.A. Mosesyan, A.A. Forafonov, R.A. Rybakov, A.V. Berlin and A.L. GavrikovA06 IOR Strategies for the Final Stage of the Development of Chutyrsko-Kiengopskoye Oil Field A.A. Mosesyan* (Petroleum Technologies) A.A. Forafonov (Petroleum Technologies) R.A. Rybakov (Petroleum Technologies) A.V. Berlin (Izhevsk Oil Scientific Centre (Udmurtneft)) & A.L. Gavrikov (Izhevsk Oil Scientific Centre (Udmurtneft)) SUMMARY Chutyrsko-Kiengopskoye is the largest carbonate field in Udmurtia Russia with more than 400 million tons (2.2 billion barrels) of oil in place. The field is laterally divided into two areas with four similar productive horizons in each. The field has been in development since 1971 with more than 1300 wells drilled. Viscosity of reservoir fluid ranges from 9
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Experimental Study of Secondary and Tertiary Polymer Flooding in Sandpack and Core
Authors V.A. Sajjadian, S. Nejadi and A.R. HaghighiA07 Experimental Study of Secondary and Tertiary Polymer Flooding in Sandpack and Core S. Nejadi (Arvandan Oil and Gas Production) V.A. Sajjadian* (Arvandan Oil and Gas Production) & A.R. Haghighi (Science and Research Branch of Azad university) SUMMARY Diverse groups of synthetic and bio polymers have been implemented in a number of oil reservoirs worldwide for enhanced oil recovery. Harsh conditions of Iranian oil reservoirs especially high temperature and salinity necessitate application of proper type of polymer along with accurate designed schemes for the injected fluid to maintain its properties for the expected residence time in the reservoir. Consequently it
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Water & Chemical Flooding in Heavy Oil Field in Southern Oman
Authors D. Boersma and S. SikaitiA08 Water & Chemical Flooding in Heavy Oil Field in Southern Oman D. Boersma* (PDO) & S. Sikaiti (PDO) SUMMARY This paper deals with a development strategy to achieve world class recovery factors in a giant oil field in Southern Oman. A comprehensive field development plan urban plan and a risk based decision and assurance frame work has been designed to move from conventional recovery to improved recovery by water flood from water flood to polymer flood and from polymer flood to Alkaline Surfactant Polymer flood. The approach allows for early implementation of the development in a brown field environment
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Novel Alkyl Ether Sulfonates for Improved Oil Recovery from Yibal Field (Oman)
Authors M. Aoudia, R.S. Al-Maamari, M. Nabipoor, A.S. Al-Bemani and S. AyatollahiA09 Novel Alkyl Ether Sulfonates for Improved Oil Recovery from Yibal Field (Oman) M. Aoudia* (Sultan Qaboos University) R.S. Al-Maamari (Sultan Qaboos University) M. Nabipoor (Shiraz University) A.S. Al-Bemani (Sultan Qaboos University) & S. Ayatollahi (Shiraz University) SUMMARY This study investigates the possibility to inject dilute aqueous solutions of novel surfactants into the Yibal field (Sultanate of Oman). Novel surfactants selected in this work consists of a series of ether sulfonates (7-58 AES-128 AES-208 AES-218 AES-506) and an amphoteric surfactant (6-105). All surfactants displayed dynamic interfacial tension (IFT) behavior between Yibal oil and formation water at the average reservoir temperature
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New Microgels for EOR – From Laboratory to Field Applications
Authors D. Rousseau, R. Tabary, A. Zaitoun, T. Pichery, P. Mallo and O. BraunA10 New Microgels for EOR – From Laboratory to Field Applications D. Rousseau* (Institut Français du Pétrole) R. Tabary (Institut Français du Pétrole) A. Zaitoun (Poweltec) T. Pichery (Gaz de France) P. Mallo (SEPPIC) & O. Braun (SEPPIC) SUMMARY New microgels specifically designed for EOR applications were extensively studied at laboratory scale and subjected to a field test. Microgels are micron-scale particles of chemically crosslinked polymers. They are preformed stable fully water soluble non-toxic and both their size and rigidy are controlled during the manufacturing process. Microgels have remarkable mechanical and thermal stability. In porous media they gather important advantages:
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Application of Surfactant Mixtures as Mobility-Control Agents
Authors I.J. Lakatos, J. Tóth, T. Bódi, J. Lakatos-Szabó, P.D. Berger and C. LeeA11 Application of Surfactant Mixtures as Mobility- Control Agents I.J. Lakatos* (Miskolc University) J. Tóth (Research Institute of Applied Chemistry) T. Bódi (Research Institute of Applied Chemistry) J. Lakatos- Szabó (Research Institute of Applied Chemistry) P.D. Berger (Oil Chem. Technologies Sugar Land USA) & C. Lee (Oil Chem. Technologies Sugar Land USA) SUMMARY Based on the laboratory studies it was firmly proved that viscoelastic tensides may offer an excellent opportunity for mobility control in various enhanced oil recovery techniques (Sv Sv+AS ASSv and AS+ Sv) independent of injection protocol. Their positive influence on recovery efficiently can be explained by mobility
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Gravity Segregation in Non-Newtonian Foam IOR
Authors C. Shen, W.R. Rossen and Q.P. NguyenA13 Gravity Segregation in Non-Newtonian Foam IOR C. Shen* (The University of Texas at Austin) W.R. Rossen (Delft University of Technology) & Q.P. Nguyen (The University of Texas at Austin) SUMMARY A useful model for gravity override in gas IOR is Stone’s model (SPE 11140; SPE 12632) which describes gravity override during simultaneous water-gas flow into a homogeneous reservoir. Shi and Rossen (SPEREE April 1998) and Cheng et al. (SPE 59287 2000) extended the model to foam processes with Newtonian rheology and Rossen and van Duijn (J. Petr. Sci. Eng. 43 99-111 2004) showed that the model is rigorously correct
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3D Seismic Imaging of Structural and Lithofacies Properties and Time Lapse Monitoring of an EOR-CO2-Flood – Hall-Gurney Field
Authors A.E. Raef, R.D. Miller, A.P. Byrnes, W.L. Watney and E.K. FranseenA14 3D Seismic Imaging of Structural and Lithofacies Properties and Time Lapse Monitoring of an EOR- CO2-Flood – Hall-Gurney Field A.E. Raef* (Kansas Geological Survey-The University of Kansas) R.D. Miller (Kansas Geological Survey-University of Kansas) A.P. Byrnes (Kansas Geological Survey-University of Kansas) W.L. Watney (Kansas Geological Survey-University of Kansas) & E.K. Franseen (Kansas Geological Survey-University of Kansas) SUMMARY Time-lapse seismic was utilized to monitor carbon dioxide movement and aid reservoir modeling in an enhanced oil recovery/sequestration pilot study. The target interval was a 900-m deep 5-m thick oomoldic limestone. in the Hall-Gurney Field central Kansas USA. Fluid replacement modeling indicted
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Offshore CO2–EOR in the Heidrun Field
Authors A.S. Lackner, P.H. Janssen, J.A. Stensen and V. HaugseA15 Offshore CO2–EOR in the Heidrun Field A.S. Lackner* (Statoil) P.H. Janssen (Statoil) J.A. Stensen (Statoil) & V. Haugse (Statoil) SUMMARY For more than 30 years CO2 has been successfully used for onshore EOR in oil fields worldwide. Today with the focus on CO2 as both an EOR-agent in fields on declining production and for reduction of greenhouse gas emissions the interest for offshore CO2-EOR and storage has increased substantially. A planned gas power plant may supply oil fields in the Halten area with about 2.3 Mton of CO2 per year from 2011 on. The Heidrun field is a candidate
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Injectivity Impairment Due to Dissolution/Precipitation Processes During a CO2 Injection
Authors J.-M. Lombard, P. Egermann, O. Vizika, S. Bekri and B. BazinA16 Injectivity Impairment Due to Dissolution/ Precipitation Processes During a CO2 Injection J.-M. Lombard* (Institut Français du Pétrole) P. Egermann (Institut Français du Pétrole) O. Vizika (Institut Français du Pétrole) S. Bekri (Institut Français du Pétrole) & B. Bazin (Institut Français du Pétrole) SUMMARY Keeping the well injectivity over the lifetime of CO2 geological storage operations is crucial for the environmental technical and economical success of such projects. The specificity of a CO2 injection compared to a conventional hydrocarbon gas injection is the possibility for geochemical reactions to occur between the mobile reactive brine and the host formation. This leads
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Visualization of the Effects of Pressure and Gas CO2 Content on Asphaltene Precipitation while Displacement of Oil Via Gas
Authors V.A. Sajjadian, S. Nejadi and M. JahediA17 Visualization of the Effects of Pressure and Gas CO2 Content on Asphaltene Precipitation while Displacement of Oil Via Gas S. Nejadi (Arvandan Oil and Gas Production) V.A. Sajjadian* (Arvandan Oil and Gas Production) & M. Jahedi (Arvandan Oil and Gas Production) SUMMARY Asphaltene precipitation is a fact that leads to significant problems due to incompatibility of the fluids while gas injection to an oil reservoir for pressure maintenance or EOR purposes. In the current research nine experiments were carried out to study problems which might encounter while that mentioned phenomena. Sample of a gigantic Iranian gas reservoir combined with
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EOS Fluid Characterization Modeling for Miscible CO2 Flooding in Volve Field
More LessA18 EOS Fluid Characterization Modeling for Miscible CO2 Flooding in Volve Field T. Yang* (Statoil ASA) & G. Byberg (Statoil ASA) SUMMARY Due to increasing environmental concerns with CO2 and high demands of injection gas for improving oil recovery CO2 injection for IOR process is attracting more attentions recently in many fields world wide. Besides other important factors (e.g. reservoir properties production designs) EOS fluid characterization plays a critical role for the complex miscible displacement process. This paper describes the procedures to accurate build an EOS fluid characterization to match all related gas injection experimental data (including swelling multi-contact and
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Features Concerning Capillary Pressure and the Effect on Two-phase and Three-phase Flow
More LessA19 Features Concerning Capillary Pressure and the Effect on Two-phase and Three-phase Flow E.I. Dale* (Centre for Integrated Petroleum Research UiB) & A. Skauge (Centre for Integrated Petroleum Research UiB) SUMMARY The effect of capillary pressure related to immiscible WAG (Water Alternate Gas) is studied by use of a numerical simulator. The capillary pressure is found to have a significant effect on the pressure gradient and the total oil production both in two-phase and three-phase flow situations. When the capillary pressure is included in the simulation the total oil production is considerably lower than when the capillary pressure is neglected.
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Insights from Fractional-Flow Theory for Models for Foam IOR
Authors Y. Dong and W.R. RossenA20 Insights from Fractional-Flow Theory for Models for Foam IOR Y. Dong* (Shell International Exploration and Production Inc) & W.R. Rossen (Delft University of Technology) SUMMARY In recent years a number of models have been proposed for steady-state foam mobility for the purpose of representing foam IOR processes on the field scale. Most of these models include an abrupt coarsening of foam at a limiting capillary pressure or water saturation. The most promising way to inject foam in the field is as "surfactant-alternating-gas" or SAG. We survey published foam models from the point of view of fractional-flow theory with particular
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Gas Flooding a Tight and Heterogeneous Silicilite Reservoir – Quantification of Sweep Efficiency
Authors H. Al-Shuraiqi and V. van EngelenA21 Gas Flooding a Tight and Heterogeneous Silicilite Reservoir – Quantification of Sweep Efficiency H. Al-Shuraiqi* (Petroleum Development Oman) & V. van Engelen (Petroleum Development Oman) SUMMARY The Al Noor field was discovered in 1989 in the South Oman salt basin. The field is at a depth of 4 km and contains the unique Athel silicilyte. The reservoir has a gross thickness of around 400 m and is fully encased in sealing salt as a result of which the reservoir is geopressured to 80 MPa. The permeability is extremely low (typical 1 – 100 micro-darcy) due to the fact that
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Foamy Technologies for Increasing Gas Production
Authors A.Y. Khavkin, A.V. Sorokin, G.A. Lanchakov and V.N. MoskvichevA22 Foamy Technologies for Increasing Gas Production A.Y. Khavkin* (Russian Academy of Sciences) A.V. Sorokin (Russian Academy of Sciences) G.A. Lanchakov (UrengoyGasProm) & V.N. Moskvichev (UrengoyGasProm) SUMMARY By development of gas field with poorly connected rocks the real influence on efficiency of gas production is very important the sand control. We had been developed the technology of foamy systems application for reduction of volume of sand which move with gas in production well. The technology have provided the nec-essary properties of foamy system due to phase transitions in gas-liquid mixes depending on pressure of system. The test foam technology on
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The Road to Sour Gas Flooding of a High Pressure Reservoir
Authors H. Soek, D. Davis, A. Hadhrami and G. DeinumA23 The Road to Sour Gas Flooding of a High Pressure Reservoir H. Soek* (PDO) D. Davis (PDO) A. Hadhrami (PDO) & G. Deinum (PDO) SUMMARY A Cluster in South Oman is being developed in a staged manner for a miscible gasflood. The business drive is to deliver projects as fast as possible in a prudent manner. Acceleration needs to be balanced against the risk of a suboptimal development. Parallel working on appraisal and project definition is one answer. This article describes some of the learnings encountered on subsurface-surface interfaces and the advanced technologies utilised to monitor reservoir performance and
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Impact of Brine Chemistry on Oil Recovery
Authors A. Lager, K.J. Webb and C.J.J. BlackA24 Impact of Brine Chemistry on Oil Recovery A. Lager* (BP) K.J. Webb (BP) & C.J.J. Black (BP) SUMMARY Since its accidental discovery at the beginning of the 20th century waterflooding has become the most successful form of oil rcovery and the vast majority of oil fields without an active aquifer or with a partial water drive are or will be under waterflood. Waterflooding is considered by the majority of reservoir engineers as a technique for pressure maintenance to energise the reservoir and as such the majority of waterflooding research has been conducted on fluid mechanics and the physics behind
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Microbial Enhanced Oil Recovery: A Review with special reference to Uneconomical/Marginal Reserves
Authors S. Zahid, H.A. Khan, M.F. Idrees and U. AsimA25 Microbial Enhanced Oil Recovery: A Review with special reference to Uneconomical/Marginal Reserves S. Zahid* (University of Engineering & Technology) H.A. Khan (University of Engineering & Technology) M.F. Idrees (University of Engineering & Technology) & U. Asim (University of Engineering & Technology) SUMMARY Oil and natural gas are vital for any economy and the importance of these resources in determining the social stability and economic viability of a nation is enormous. As the search for petroleum continues recovery of known reserves must be improved if the goal of avoiding shortages is to be met. In today’s energy sector the high
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Bugs for Oil? Potential of MEOR in Selected Australian Reservoirs
Authors A.K. Becis, H.K. Sarma and B. SetiadiA26 Bugs for Oil? Potential of MEOR in Selected Australian Reservoirs A.K. Becis* (University of Adelaide) H.K. Sarma (University of Adelaide) & B. Setiadi (Santos Ltd) SUMMARY Microbial Enhanced Oil Recovery (MEOR) is an Enhanced Oil Recovery (EOR) process with no applications in Australia. However there have been limited successful applications world-wide most notably in China USA Venezuela and Eastern Europe. The varied nature of MEOR applications suggest that possibilities should also exist in Australian reservoirs. MEOR involves the use of microbes their metabolic activities and by-products to improve the recovery of oil from the reservoir. It also encompasses microbial
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Performance of Ivanhoe Energy's HTL Crude Oil Upgrading Process
Authors N. Malpiede, E. Veith and J. KuhachA27 Performance of Ivanhoe Energy's HTL Crude Oil Upgrading Process N. Malpiede* (Ivanhoe Energy) E. Veith (Ivanhoe Energy) & J. Kuhach (Ivanhoe Energy) SUMMARY Ivanhoe Energy’s proprietary heavy oil to light oil (HTL) upgrading technology is designed to cost effectively process heavy oil in the field and provide a stable significantly upgraded synthetic oil product along with by-product energy which can be used to generate steam or electricity. Analysis shows that HTL can virtually eliminate cost exposure to natural gas and diluent and capture the majority of the heavy to light price differential for oil producers. HTL accomplishes this at
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Preparing a Fractured Carbonate Field for Steam Injection
Authors B. Wassing, J. Van Wunnik, G. Warrlich, A. Lamki, T. Johnson, J. Gittins and M. RiyamiB01 Preparing a Fractured Carbonate Field for Steam Injection B. Wassing* (PDO) J. Van Wunnik (PDO) G. Warrlich (PDO) A. Lamki (PDO) T. Johnson (PDO) J. Gittins (PDO) & M. Riyami (PDO) SUMMARY The subject field is a fractured carbonate reservoir located in the Ghaba Salt Basin in Oman containing heavy viscous oil. The field was discovered in 1972 and has been producing since 1976 through a process of mainly fracture depletion and natural water-influx. Without the application of an EOR technique the recovery will be low as the processes that displace oil from the matrix reservoir rock are adversely
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Pilot Tests of IOR-Technology Alternating Thermal-Steam and Physicochemical Treatments of High-Viscosity Oil Pools with oil-displacing systems
More LessB02 Pilot Tests of IOR-Technology Alternating Thermal-Steam and Physicochemical Treatments of High-Viscosity Oil Pools with oil-displacing systems L.K. Altunina* (Russian Academy of Sciences) SUMMARY To increase efficiency of thermal-steam and cyclic-steam treatments of high-viscosity oil pools we propose to combine them with physicochemical methods. Therefore IOR-technology has been developed to alternate thermal-steam and physicochemical treatments of high-viscosity oil pools with oil-displacing systems to improve oil recovery. Oil-displacing systems contain surfactants and at thermal stimulation they generate CO2 and alkaline buffer solution in situ. Use of such systems decreases oil viscosity interfacial tension and clay swelling and simultaneously increases mobility of
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Pilot Tests of Gel-Technology for Water Shutoff
More LessB03 Pilot Tests of Gel-Technology for Water Shutoff V.A. Kuvshinov* (Russian Academy of Sciences) SUMMARY Thermal-steam treatment of oil pool by means of stationary or cyclic steam injection is considered as the most effective out of all current methods for high-viscosity oil production. However problem consists in low coverage by steam injection and decreased efficiency of thermal-steam treatment at later stage of oil field development. We propose to increase efficiency of thermal-steam treatment combining it with physicochemical methods using gel-forming and oil-displacing systems. Gels increase coverage by steam injection and oil-displacing systems provide extra displacement of oil. Technologies have been
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Water Flooding of Carbonate Reservoirs – Effects of a Model Base and Natural Crude Oil Bases on Chalk Wettability
Authors T. Puntervold, S. Strand and T. AustadB08 Water Flooding of Carbonate Reservoirs – Effects of a Model Base and Natural Crude Oil Bases on Chalk Wettability T. Puntervold* (University of Stavanger) S. Strand (University of Stavanger) & T. Austad (University of Stavanger) SUMMARY Polar components especially the carboxylic material in crude oil are known to have great impact on the wetting conditions of carbonates. The water-wetness decreases as the acid number AN of the crude oil increases. The success of enhanced oil recovery by water flooding in fractured carbonates is strongly depending on the wetting conditions of the formation. The impact on wettability of basic compounds
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Complex Laboratory Investigation of Fluid Flow Properties for Anisotropic Porous Media
Authors A.A. Semenov, V.V. Kadet, N.M. Dmitriev and M.N. DmitrievB09 Complex Laboratory Investigation of Fluid Flow Properties for Anisotropic Porous Media A.A. Semenov* (Gubkin Russian State University of Oil & Gas) V.V. Kadet (Gubkin Russian State University of Oil & Gas) N.M. Dmitriev (Gubkin Russian State University of Oil & Gas) & M.N. Dmitriev (Gubkin Russian State University of Oil & Gas) SUMMARY Nowadays the condition of oil development is characterized by involvement of hard recoverable oil reserves with sophisticated reservoir structure. Therefore a more adequate description of fluid flow requires taking into account the anisotropy of porous media. At the heart of our work lies an assumption based
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The Impact of Fault Rocks on Improved Oil Recovery
Authors S.M.S. Al-Hinai, Q.J. Fisher and C.A. GrattoniB10 The Impact of Fault Rocks on Improved Oil Recovery S.M.S. Al-Hinai* (University of Leeds) Q.J. Fisher (University of Leeds) & C. A. Grattoni (University of Leeds) SUMMARY Faults can severely compartmentalize reservoirs which have a significant influence in the profitability as more wells needs to be drilled. Therefore it is important to account for their effects in production simulation models. The advances in fault seal analysis have recently led to dramatic reductions in the time required to achieve a history match of production data. In addition as the history matches are more geologically-reasonable they may prove better for predicting
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Feasibility Study of SAGD for a Carbonate Heavy Oil Reservoir
Authors F. Rashidi and B. Sedaee SolaB11 Feasibility Study of SAGD for a Carbonate Heavy Oil Reservoir B. Sedaee Sola (Amir Kabir University) & F. Rashidi* (Amir Kabir University) SUMMARY Steam injection is the most important thermal enhanced oil recovery method in sandstone reservoirs and in this method Steam-Assisted Gravity Drainage (SAGD) is a very effective in mobilizing of heavy oil and achieving high recovery from thick and high permeability reservoirs. The method creates short distance and stable displacement of steam and increases production rates by using gravity force as a driving potential and a pair of horizontal wells for Injection/production. SAGD in Sandstone oil Reservoirs
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Flow Regimes of Heavy Oils under Water Displacement
Authors E.S. Vittoratos Inc., C.C. West Inc. and C.J. BlackB12 Flow Regimes of Heavy Oils under Water Displacement E.S. Vittoratos* (BP Exploration (Alaska) Inc.) C.C. West (BP Exploration (Alaska) Inc.) & C.J. Black (BP Sunbury) SUMMARY We have examined the production data from heavy oil reservoirs produced by waterflooding. Previous observations from a waterflooded heavy oil reservoir on the North Slope of Alaska have indicated sequential flow regimes characterized by steps in the Water Oil Ratio (WOR) vs Cumulative Recovery curve. The most prominent feature is a period with a constant WOR near one of variable duration but often persisting for many years; this is followed by a large
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Complex Thermodynamic Behaviour to Assess the Performance of Solvent Injection into Heavy Oil
Authors N. Guillonneau and G. DarcheB13 Complex Thermodynamic Behaviour to Assess the Performance of Solvent Injection into Heavy Oil N. Guillonneau* (TOTAL) & G. Darche (TOTAL) SUMMARY Injection of gaseous solvent in heavy oil reservoirs might be an alternative recovery technique as compared to thermal processes. Several uncertainties remain on the physical behaviour of the solvent-oil interaction: amount of diffusion/dispersion gravity and capillary effects nature of the thermodynamic equilibriums. This paper will address some of these uncertainties through the history match of a coreflood experiment in order to tune some of the physical parameters. This experiment was performed by injecting a C2 – C3 gas
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Optimal Economic Strategies for SAGD+Solvent Processes
By G. DarcheB14 Optimal Economic Strategies for SAGD+Solvent Processes G. Darche* (TOTAL SA) SUMMARY The SAGD process (Steam Assisted Gravity Drainage) is currently favoured for developing bitumen fields and also shows potential to develop mobile heavy oils beyond the economic performances of classical cold production. However to reduce steam injection needs and increase recovery associated to SAGD engineers are trying to improve SAGD by adding extra fluids to the injected steam. One of the most promising techniques ES- SAGD consists in adding condensable solvents to the steam which still reduces the bitumen viscosity and improves the oil recovery. In this paper we
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A Pre-Feasibility Study in View of an IOR/EOR Pilot in a Heavy Oil Field in the Western Desert (Egypt)
Authors S. Renna, G. Fanello, A. Godi, A. Badr and E. El MoutyB15 A Pre-Feasibility Study in View of an IOR/EOR Pilot in a Heavy Oil Field in the Western Desert (Egypt) S. Renna* (ENI E&P) G. Fanello (ENI E&P) A. Godi (ENI E&P) A. Badr (AGIBA) & E. El Mouty (AGIBA) SUMMARY The field located in the Egyptian Western Desert is mineralised at heavy oil (16°API 23 cP@RC)and it shows a current recovery factor of 1%. The objective of this study was to increase the oil production by investigating the applicability of different IOR/EOR techniques thermal and chemical methods included. The achievement of this goal went through the following steps: 1.Preliminary
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Steam Flooding a 200 m Thick Clastic Heavy Oil Reservoir
Authors V. van Engelen, S. Al-Harthy and J. van WunnikB16 Steam Flooding a 200 m Thick Clastic Heavy Oil Reservoir V. van Engelen* (PDO) S. Al-Harthy (PDO) & J. van Wunnik (PDO) SUMMARY The discussed field is located in South Oman and contains a 200m thick column of heavy oil in sandstone reservoir at a depth of 1150m below surface. The field has been in production for 20 years and is currently in decline. A pattern steam flood re-development is proposed potentially doubling or tripling ultimate recovery. The extreme thickness of the heavy oil reservoir (up to 200m) is unique and poses both opportunities as well as challenges. Given
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Fundamentals Solutions for Steam and Nitrogen Injection
Authors D. Marchesin, W. Lambert and J. BruiningB17 Fundamentals Solutions for Steam and Nitrogen Injection W. Lambert (IMPA - Instituto de Matematica Pura e Aplicada) D. Marchesin* (IMPA-Inst. De Matemat. Pura e Aplicada) & J. Bruining (Dietz Laboratory Centre of Tech. Geos. Tudelft) SUMMARY Steam is applied to recover oil and to clean up oil spills. However the a steam temperature is often unnecessary and adds to costs in the case of oil recovery and killing bacteria worms etc. which play a vital role in a "life" soil in environmental applications. Coinjection of an inert gas (nitrogen carbondioxide) would be able to keep the temperature low. Moreover
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Testing a Giant Light Oil Reservoir for Steam Flooding
Authors F. Van Beek, R. Hamm, D. Green-Armytage, S. al Ghafri and M. al GharbiB18 Testing a Giant Light Oil Reservoir for Steam Flooding F. Van Beek* (PDO) R. Hamm (PDO) D. Green-Armytage (PDO) S. al Ghafri (PDO) & M. al Gharbi (PDO) SUMMARY An accelerated steam injection development is planned for a limited area of a giant oil field in Oman. The prime objective of this 1st Phase is to prove the development concept of steam injection in this light oil fractured carbonate reservoir. Unlike traditional heavy oil steam floods a complex interplay of recovery mechanisms have been identified leading to a large range of incremental oil forecasts. Hence proof of concept is
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Wettability Modification of Oil-Wet Rock – Modelling and Experiments
Authors W.M. Stoll, J.P. Hofman, D.J. Ligthelm and M.J. FaberB19 Wettability Modification of Oil-Wet Rock – Modelling and Experiments W.M. Stoll* (Shell International EP B.V.) J.P. Hofman (Shell International EP B.V.) D.J. Ligthelm (Shell International EP B.V.) & M.J. Faber (Shell International EP B.V.) SUMMARY An oil-saturated oil-wet rock does not naturally imbibe brine. In order to release its oil in place an external viscous pressure gradient must be applied that overcomes the capillary pressure. If however the rock is pervasively fractured such a pressure gradient cannot be established and the oil remains inaccessible to traditional IOR techniques. Recently a new concept termed “wettability modification” of oil-wet reservoirs has
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EOR Methods to Enhance Gas Oil Gravity Drainage - Modeling Aspects
Authors P.M. Boerrigter, M.L. Verlaan and D. YangB20 EOR Methods to Enhance Gas Oil Gravity Drainage - Modeling Aspects M.L. Verlaan (Shell International Exploration & Production) P.M. Boerrigter* (Shell International Exploration & Production) & D. Yang (Shell Canada Energy) SUMMARY Conventional displacement methods such as water flooding do not work effectively in densely fractured reservoirs: due to the high fracture permeability it is not possible to establish significant pressure differentials across oil bearing matrix blocks to drive oil from matrix rock towards producers. In such reservoirs one has to rely on natural mechanisms like capillary imbibition or gravity to recover oil from the matrix reservoir rock. In
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EOR Potential of Naturally Fractured Supercritical Fluid Field
Authors L. Kollbotn, K. Khan, R. Berenblyum, L. Surguchev and C. AlvaresB21 EOR Potential of Naturally Fractured Supercritical Fluid Field K. Khan (PDVSA Oriente) R. Berenblyum (International Research Institute of Stavanger) L. Kollbotn* (International Research Institute of Stavanger) L. Surguchev (International Research Institute of Stavanger) & C. Alvares (INTEVEP PDVSA) SUMMARY The Orocual field operated by PDVSA is situated in the North Monagas region in eastern Venezuela. The main reservoir is naturally fractured sandstone containing supercritical fluid with composition varying from light gas/condensate at the top to moderately light oil at the bottom. The results of EOR potential evaluations for this field will be presented in this paper. The development of
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Using Streamline Simulation for Advanced Reservoir Management
Authors M. Thiele and R.P. BatyckyB22 Using Streamline Simulation for Advanced Reservoir Management M. Thiele* (StreamSim Technologies) & R.P. Batycky (Streamsim Technologies) SUMMARY Streamline-based flow simulation (SL) is an effective and complementary technology to more traditional flow modeling approaches such as finite differences (FD). This is because streamline-based flow simulation is particularly efficient in solving large geologically complex and heterogeneous systems where fluid flow is dictated by well positions and rates rock properties (permeability porosity and fault distributions) fluid mobility (phase relative permeabilities and viscosities) and gravity. These are the class of problems more traditional modeling techniques have difficulties with. For waterflooding and EOR modeling
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Application of IOR Methods on “Lukoil – West Siberia”
Authors K. Fedorov, M.R. Sadikov, N.E. Pavlov and M.F. PecherkinB23 Application of IOR Methods on “Lukoil – West Siberia” K. Fedorov* (Tyumen Research Center of "KogalymNIPIneft" Ltd) M.R. Sadikov (LUKOIL-West Siberia) N.E. Pavlov (Tyumen Research Center of "KogalymNIPIneft" Ltd) & M.F. Pecherkin (Tyumen Research Center of "KogalymNIPIneft" Ltd) SUMMARY The presentation briefly describes the main features of oil production on “LUKOIL –West Siberia” ltd operated fields. The complex IOR program was adopted and is realized by the operator. It includes horizontal and additional branches drilling hydraulic fracturing to maintain production on the mature fields large number of chemical treatments to decrease water production. The main operated fields have large
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Monitoring of Reservoir Fluids Movement Based on Time-Lapse Microgravity Observations
By J. MrlinaB24 Monitoring of Reservoir Fluids Movement Based on Time-Lapse Microgravity Observations J. Mrlina* (Geophysical Institute ASCR) SUMMARY Monitoring of fluids in reservoirs has become an essential tool for the control of the development of hydrocarbon fields. Repeated microgravity measurements can determine especially gas-water or gas-oil contact displacement in time. Gravity modelling was performed to test such gravity monitoring effectiveness in case of gas storage and various cases of gas-water movement in reservoirs (pumping water-flooding etc.). The size of the gassaturated part of a reservoir sequence was changed in various directions as well as depth porosity and density contrasts between fluids.
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Integrated 3D Seismic, Petrophysical Data of the Sarvak Formation, Sirri District in the Persian Gulf
By A. BashariP01 Integrated 3D Seismic Petrophysical Data of the Sarvak Formation Sirri District in the Persian Gulf A. Bashari* (Irannian Offshore Oil Company) SUMMARY Sirri district forms part of vast sedimentary area located between: The Qatar uplift in the west. The mio-geosyncline of the Zagross in the north. The Omanides geosyncline in the south east. To the south this sedimentary extends to the Rub Alkali desert. The study of the Middle- Late Cretaceous contains Mishrif Khatiyah and Mauddud members which called Sarvak (equivalent to Cenomanian of Middle Cretaceous) and Late Cretaceous formations contains Laffan Ilam and Gurpi. Among them the Mishrif
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Sequence Stratigraphy and Characterization over Upper Surmeh (Arab) Formation Integrated with Petrophysical Evaluation in Reshada
By S. SohrabiP02 Sequence Stratigraphy and Characterization over Upper Surmeh (Arab) Formation Integrated with Petrophysical Evaluation in Reshada S. Sohrabi* (National Iranian Offshore Oil Company) SUMMARY The upper jurassic Surmeh(Arab) Formation in Block R in Iranian territorial Reshadat field in the Persian Gulf subdivided into the A A1 B C and D members is overlain by Hith formation and underlain by the Darb and Diyab formations. Typically the Darb and Diyab formations are potential source rocks the Arab members are reservoirs and the Hith is an extensive Seal. The Hith formation is unconformably overlain by lower Cretaceous limestones and Dolomites of the
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IOR with Offshoots Application
Authors N.A. Cheremisin, A.A. Klimov, P.A. Efimov and R.A. BulatovP03 IOR with Offshoots Application N.A. Cheremisin* (SurgutNefteGaz) A.A. Klimov (SurgutNefteGaz) P.A. Efimov (SurgutNefteGaz) & R.A. Bulatov (SurgutNefteGaz) SUMMARY Offshoots application is universal IOR and stimulation of production method. It is effective during various development stages and allows solving a problem of remaining reserves recovery in interwell space nondraining because of limited stimulation radius of physicochemical and hydrodynamic advanced recovery methods. Moreover sidehole drilling allows: to realize replacing of simulation zones regulate displacement front and rehabilitate damaged low producing and drowned well stock. The especial problem for OJSC Sugrutneftegaz is increase development efficiency of oil-and-gas fields containing about 25.5% of
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