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IOR 1999 - 10th European Symposium on Improved Oil Recovery
- Conference date: 18 Aug 1999 - 20 Aug 1999
- Location: Brighton, UK
- ISBN: 978-90-73781-11-5
- Published: 18 August 1999
41 - 50 of 50 results
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Up-scaling Laboratory Velocity data to Field Measurements
Authors J. Khazanehdari, C. McCann and J. SothcottIn this work we have tried to explore the practicality of up-scaling laboratory velocity data to field measurements. This was done by conducting a series of laboratory measurements on samples from two shoreface facies sandstone hydrocarbon reservoirs from the North Sea. The acoustic measurements were conducted at room temperature and at confining pressures ranging from 5 MPa up to 45 MPa. The measurements were carried out on vacuum dry, brine- and oilsaturated samples. The ultrasonic data were compared with a sonic laboratory measurement and up-scaled to the wireline velocity data.
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Upscaling on General Quadrilateral Grids in 3D with Application to Field Cases
Authors C. F. Eek-Jensen, I. Aavatsmark and Ø. BøeThis paper presents an upscaling method designed for upscaling of absolute permeability on general quadrilateral grids, i.e., grids with skewed cells. The method is based on conservation of dissipation and periodic boundary conditions.
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A Neural Network for Modelling Well Interactions
Authors R. Ramberger and G. ZanglThe Austrian field Hochleiten at the margin of the Vierma basin is highly compartmentalised, due to intensive faulting. Moreover, the reservoir sands are mainly of deltaic origin and thus often laterally heterogeneous. Because of these discontinuities, a waterflooding program in the field did not work as desired. Seismic and geology give the general framework of the reservoir architecture, but the details of sandbody connections cannot be assessed in this way.
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A Steady-State Approach to Upscale relative Permeabilities and it's Application in 2D
Authors G. Virnovsky and H. A. FriisWe present a model for efficient direct upscaling of two-phase relative permeabilities by solving a series of steady state, two-phase problems. The developed numerical model simulates steadystate multiphase flow in 2 and 3D in heterogeneous reservoirs with account for viscous, capillary and gravity forces at a given external pressure drop. It is used to compute effective properties for a synthetic heterogeneous reservoir. The presented examples show the dependence of effective relative permeabilities and residual oil saturation on the magnitude of the pressure drop applied to the boundaries of the flow domain. The convergence of the effective relative permeabilities towards the viscous limit functions is analyzed in 1 and 2D.
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Modelling Conductive Faults With a Multiscale Approach Involving Segregation Concept
Authors N. Henn, B. Bourbiaux, M. Quintard and S. SakthikumarReservoir engineers have underlined the difficulties to get both good physical representation and numerical performance in modelleng conductive faults. The present work proposes a representative and efficient model to simulate multiphase flows in highly faulted fields. Our model uses the gravity segregation concept to represent flows in the fault planes. The segregated model has been coupled to a conventional black-oil reservoir simulator modelling the matrix flows within the fault panels. This paper describes the model with its physical basis. Validations against finely-gridded simulations for multiphase displacements in a fault panel are also presented.
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Seismic and Rheochemical Technologies for Improving Productive Oil Capacity of Pay Zones and Monitoring of These Technologies
Hard-to-recover reserves whose development by traditional technologies is low effectave or even impossible sometimes, play the growing role in the oil reserves balance of oil fields being under a long-term production.
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Streamline Based Simulations
More LessWith four examples distinct qualifications of the streamline methodology are demonstrated: numerical dispersion free mass transport, fast computer runs, application in inverse modeling and a suggested approach to model compressible flow.
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An Innovative New Combination of Coiled Tubing Tools Which Enables Multiple Re-Entry into Open Hole Laterals Without Any Pre-Placed Datum Devices in the Completion During the Well Construction Phase
By C. HillsThis paper summarises the evolution of coiled tubing tools from the simple jetting nozzle
through to the highly advanced multi-function multi shot tools currently in use today. The paper
goes on to illustrate an innovative method devised for entering open hole laterals as a direct
response to demand for cost effective well maintenance solutions against a backdrop of low oil
prices. The tool illustrated is an evolution of existing knowledge on re-entry technology
combined with the best features of current multi-function coiled tubing manipulation tools. The
new solution allows repeated acces to lateral junctions without the need for special completion
components during the well construction phase.
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