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IOR 2011 - 16th European Symposium on Improved Oil Recovery
- Conference date: 12 Apr 2011 - 14 Apr 2011
- Location: Cambridge, UK
- ISBN: 978-90-73834-07-1
- Published: 12 April 2011
21 - 40 of 71 results
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Precipitation of Asphaltene From Crude Oil Using Filtration Experiments
Authors X. Xu, J. P. Crawshaw and E. BoekCarbondioxide (CO2) is being increasingly used as an oilfield treatment fluid for Enhanced Oil Recovery (EOR) purposes. The incremental recovery is often increased significantly as supercritical CO2 is miscible with hydrocarbon reservoir fluids. However
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Improvement of Spontaneous Imbibition in Carbonate Rocks by CO²-saturated Brine
Authors I. F. Fjelde, S. M. A. Aasen and J. F. Z. ZutaCarbon dioxide (CO2) can improve the oil recovery from oil reservoirs. When CO2 is mixed with water, CO2 saturated water (carbonated water, CW) can be formed. CW can be formed in tertiary CO2-floods after water injection and if water is injected to reduce
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Sweep Efficiency in CO2 Foam Simulations with Oil
Authors M. K. Liu, A. I. Andrianov and W. R. RossenWe simulate gravity segregation and sweep in foam EOR in miscible and immiscible displacements of oil to investigate the effect of oil on foam sweep and the usefulness of simple models designed to predict the extent of gravity override with foam. Comparis
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Evaluation of Foam for GOR Control
Authors H. Cubillos, P. Bartolome, J. Montes, C. Prieto and P. RomeroThe miscible gas flood in the RFK oil field has matured and, over the years, oil has been produced at an increasing gas oil ratio (GOR). Even though the gas displacement mechanism is miscible, or close to miscible, the poor mobility ratio between injected
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Modeling Gas Trapping and Mobility in Foam EOR
Authors H. O. Balan, M. T. Balhoff, Q. P. Nguyen and W. R. RossenFoam greatly reduces the mobility of gas in porous media, both by increasing the effective viscosity of the gas phase and by trapping a substantial fraction of the gas in place. This property of foam makes it an effective gas diverter in miscible and imm
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Modelling Gas Based EOR Injection Schemes – The Interplay Between Compositional Effects, Relative Permeability Hysteresis
More LessGas injection is a proven enhanced oil recovery method especially for light oil reservoirs. Gas has the ability to enhance hydrocarbon recovery beyond levels possible with primary and secondary recovery methods and leads to high displacement efficiency. H
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CO² EOR and Storage – Lessons Learned from Several Case Studies
Authors R. Berenblyum, A. Shchipanov, L. Surguchev and L. KollbotnWhile CO2 EOR (Enhanced Oil Recovery) has been studied and used for several decades now the CCS (Carbon Capture and Storage) applications are relatively new, yet actively expanding field of research. For both EOR and CCS processes an application to a giv
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The Stability of Pre-formed Foam and the Effect of Gravity Forces During CO²-foam Processes in Fractured Chalk Rock
Authors J. Zuta, I. Fjelde and R. BerenbylumRecent laboratory and mechanistic modeling studies have demonstrated that CO2-foam has the potential to recover additional oil in fractured water flooded chalk rock. The CO2-foam process was carried out in a short core plug by injecting pre-formed foam at
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Water-based EOR from a Low Permeable Fractured Limestone by Wettability Alteration
Authors R. Rostami Ravari, T. Austad and S. StrandWater-based enhanced oil recovery by wettability alteration from chalk at high temperature has been previously verified experimentally in the literature. For the first time, it is reported in this paper, that extra oil recovery can be obtained by a tertia
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Effect of Temperature and Salinity on Wettability: Microscale Study
Authors T. Al-Aulaqi, C. A. Grattoni, Q. J. Fisher, Z. Musina, M. Al-Harrasi and N. KapurThermal EOR has been considered for enhancing oil recovery both in carbonate and sandstone reservoirs. Traditionally, thermal EOR improves recovery by lowering oil viscosity and thereby improving the oil production rate, and with this aim is usually perfo
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From Flask to Field – The Long Road to Development of a New Polymer
Authors B. Leonhardt, F. Visser, E. Lessner, B. Wenzke and J. SchmidtA few years ago Wintershall revived earlier work on an environmentally friendly polymer that is a robust viscosifier even under harsh reservoir conditions. The rheological, mechanical and adsorption characteristics were investigated in core flood experime
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Viscosifying Surfactants for Chemical EOR
Authors G. Degré, M. Morvan, J. Bouillot, A. Zaitoun, R. S. Al-Maamari, A. R. Al-Hashmi and H. H. Al-SharjiThis work describes proprietary surfactant-based viscosifying fluids for Chemical EOR applications. The viscosity is induced by wormlike micelles formed by self-assembled surfactants. Prior to a deeper analysis of fluid flow profile, the viscosity of th
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Fractional Flow Theory for Non-Newtonian Polymer Flooding
Authors A. Venkatraman, R. T. Johns and W. RossenPolymer flooding is a proven enhanced oil recovery method that can significantly improve sweep and oil recovery. Predictions of polymer floods are typically made using numerical simulators, which may or may not include non-Newtonian effects. While simul
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Novel Associative Copolymer with Favorable Properties in Polymer Flooding Applications
Authors R. Reichenbach-Klinke, B. Langlotz, C. Spindler and B. WenzkeNew thickeners based on associative properties are discussed. The new thickeners are anionic, water-soluble copolymers with pendant associative groups. These associative groups are based on a novel, patented chemistry. The viscosity of the new copolymer
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Selecting the “Right” ASP Model by History Matching Core Flood Experiments
Authors V. Karpan, R. Farajzadeh, M. Zarubinska, M. Stoll, H. Dijk and T. MatsuuraIn order to design and analyze Alkaline Surfactant Polymer (ASP) pilots and to generate reliable ASP field forecasts a robust scalable modeling workflow for the ASP process is required. A starting point of such a workflow is to carry out ASP coreflood tes
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Integrated Well and Reservoir Surveillance in the Oman EOR Developments
Authors M. Zwaan, R. Hartmans, J. Saluja, S. Schoofs, G. Rocco, F. Saadi, J. Lopez, J. Ita and T. SoropDescription of the Proposed paper: This paper focuses on the well and reservoir management, including integrated interpretation of EOR surveillance technologies with a discussion of the field development decisions that may depend on this interpretation.
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Low Salinity Waterflood, Endicott, Alaska: Geochemical Study & Field Evidence of Multicomponent Ion Exchange
Authors A. Lager, K. Webb and J. SeccombeThis paper describes the change in brine composition during the first comprehensive inter-well field trial of low-salinity waterflood and the modelling of these changes using geochemical models based on PHREEQC and the history match approach, Top-Down Res
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Low Salinity Enhanced Oil Recovery – Laboratory to Day One Field Implementation – LoSal EOR into the Clair Ridge Project
Authors T. A. Buikema, C. Mair, D. Williams, D. Mercer, K. J. Webb, A. Hewson, C. E. A. Reddick and E. RobbanaAs recorded in the literature and over a ten-year period, there has been significant growth in the body of evidence supporting LoSal EOR as a viable enhanced oil recovery process. Over this period it has been shown that LoSal EOR will recover incremental
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Alkaline-surfactant-polymer Flood – From the Laboratory to the Field
Authors M. Stoll, S. A. A. Al-Harthy, J. Van Wunnik and M. J. FaberRecent years have seen renewed focus on chemical Enhances Oil Recovery. Techniques such as polymer flooding, surfactant flooding or alkali-surfactant-polymer flooding are under evaluation globally for the application in maturing oil fields. Despite extens
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Offshore EOR Implementation – LPS Flooding
Authors T. Skauge, K. Djurhuus, S. Hetland, K. Spildo and A. SkaugeThis paper discusses preparations required for performing an offshore LPS flood (Linked Polymer Solution). Laboratory core floods have demonstrated increased oil recovery by injection of coiled crosslinked polymers at low polymer concentration. LPS consis
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