- Home
- Conferences
- Conference Proceedings
- Conferences
ECMOR VII - 7th European Conference on the Mathematics of Oil Recovery
- Conference date: 05 Sep 2000 - 08 Sep 2000
- Location: Baveno, Italy
- ISBN: 978-90-73781-13-9
- Published: 05 September 2000
21 - 40 of 48 results
-
-
Coupled inversion of permeability and acoustical impedance - an outstanding data integration
Authors L. Pianelo, D. Guérillot and T. GallouëtThe description of a reservoir internal architecture in Reservoir Engineering needs seismic acquisitions and well tests. They provide us with information about the petrophysical parameters of the underground, such as permeability and the acoustical impedance.
-
-
-
The benefit of coupling geophysical inversion problems with fluid flow simulation
Authors M. Chacara, I. Magniant, Y. Manin, J-P. Delhomme and N. ÉberléThis paper describes a reservoir monitoring interpretation method that combines time-lapse downhole DC electrical measurements and multiphase fluid flow simulation to infer both the electrical (resistivity) and fluid flow (relative permeability) properties of the medium. The two types of earth properties are linked through petrophysical laws. We use a Bayesian inference approach, where the knowledge of the parameters of interest is quantified through probability density functions. The solution is given by the posterior probability density of parameters related to the relative permeability of each fluid phase
-
-
-
Modelling chemical displacement in corefloods and the near-well formation to optimise treatments and minimise environmental damage
By E. J. MackayAs waterflooded reservoirs mature, hydrocarbon production will probably be accompanied by high watercuts. However, there are various environmental and formation damage problems associated with water production, additional to the obvious economic disadvantages.
-
-
-
Flow of water through channels filled with elastically-deformable polymer gels
Authors C. Yang, C. A. Grattoni, A. H. Muggeridge and R. W. ZimmermanA mathematical model is developed for the flow of water through a channel impregnated with a polymer gel.
-
-
-
Time scaling of the rates of produced fluids in laboratory displacements in porous media
Authors C. Laroche, Y. C. Yortsos and J. KamathIn a recent study¹ it was shown that the ratio of the flow rates of the produced fluids in an immiscible displacement can be used to identify geometrical and petrophysical characteristics of a reservoir. In this paper we consider its application to displacements in 1-D laboratory cores.
-
-
-
Flow based modules for grid generation in two and three dimensions
Authors A. Castellini, M. G. Edwards and L. J. DurlofskyA novel method for grid generation in reservoir simulation is presented. Grid generation can be simplified by decomposing the domain into a set of subdomains such that modular grid generation can be performed within each subdomain. Local modular grids can be generated according to the local geometry, geology and/or mean flow conditions. The focus here is on the development of three dimensional flow based modules that can be generated locally and independently. A single local flow response can be used to define mean flow streamlines that naturally cluster in high velocity regions of the module. Results computed with the new flow based grids demonstrate a significant improvement in accuracy when compared with conventional Cartesian grids of similar resolution.
-
-
-
A fast Markov chain Monte Carlo method for conditioning reservoir models to dynamic data
Authors J. Caers and S. SrinivasanThe integration of dynamic data, such as well-test or production data, has become an increasingly important task for accurate reservoir characterization. Integration of dynámic data is mathematically treated as an ili-posed inverse problem.
-
-
-
Constraining random field models to seismic data - getting the scale and the physics right
By J. CunningA new algorithm for constraining geostatistical models to high density 3D seismic data is described. The algorithm is based on a physically reasonable convolutional forward model to relate high resolution data at the log or simulation scale to the low resolution data available from seismic.
-
-
-
Simulation of hydraulically fractured horizontal and vertical wells to well testing accuracy using unstructured grids
Authors R. Banerjee, D. Gunasekera and K. FletcherThis paper introduces grids that model vertical and horizontal wells with single or multiple fractures and the flow around them so that even early time effects can be modelled accurately. Algorithms that generate these grids are discussed.
-
-
-
Modelling of fluid flow around and within highly deviated horizontal wells
Authors G. Heinemann, A. Abdelmawla and S. BrockhauserThis paper presents the implementation of irregularly shaped horizontal and slanted Wells in a fieldscale reservoir simulation model.
-
-
-
connection transmissibility factors in reservoir simulation for slanted wells in 3D grids
Authors R. A. Klausen and I. AavatsmarkA new simple method for computing the connection transmissibility factor, CF, for a well oriented in an arbitrary direction in a 3D grid is presented.
-
-
-
Mathematical modelling of sand production by plastic dilatant flow of fragmented matrix under filter forces
More LessSand production from a poorly consolidated formation during gas, oil or water, recovery is an old, but yet unsolved problem of petroleum and geomechanical engineering. To onderstand this phenomenon, it is necessary to find the reasons why sand grafins (that is, fragments of the destroyed matrix) begin to move towards a well.
-
-
-
Topological shape optimisation in reservoir engineering
Authors D. Rahon, P. F. Edoa and M. MasmoudiThe shape optimisation method is frequently used in solid mechanics. It consists in modifying, in an iterative way, the geometry of the object or the body to be identified in order to minimise a criterion also called the objective function. These optimisation techniques do not allow topology change. The final and the initial body have the same number of components and the connections are not modified.
-
-
-
Modelling fluid flow in reservoirs crossed by multiscale fractures - a new approach
Authors N. Henn, B. Boubiaux, M. Quintard and S. SakthikumarSome of the most productive oil and gas reservoirs are found in formations crossed by multiscale fractures/faults. Among them, conductive faults may closely control reservoir performance. However, their modelling encounters numerical and physical difficulties linked with (a) the necessity to keep an explicit representation of faults through small-size gridblocks, (b) the modelling of multiphase flow exchanges between the fault and the neighbouring medium, especially if the latter is fractured and modelled as a dual medium.
-
-
-
Permeability of fractured porous media
Authors I. Bogdanov, V. V. Mourzenko, J. -F. Thovert and P. M. AdlerFlow in fractured porous media was first investigated by Barenblatt and Zheltov (1960) and Barenblatt et al. (1960) by means of the double porosity model. A direct and complete solution of the flow in such media is given in this paper. Some preliminary results are presented and discussed; they show the importance of the percolation threshold of the fracture network and possibly of the porous matrix.
-
-
-
Application of a truncation error estimate to time step selection in a reservoir simulator
By T. BarkveTime step selection in a reservoir simulator is a balance between minimizing work load and maximizing accuracy. The paper presents derivation of an estimate for the time truncation error for a discretized nonlinear system of differential equations and use of this estimate as basis for time step selection. The relationship between the truncation error and the solution error is discussed.
-
-
-
Efficient multilevel method for local grid refinement for massively parallel reservoir simulation
Authors L. S. K. Fung and A. H. DogruThe objective of this work is to develop a robust and efficient multilevel parallel algorithm to solve regelar composite grids resulting from local sub-gridding of a multi-million-cell base grid. The strategy is to formulate an iterative scheme on a grid-by-grid basis such that the regelar structure of the matrix at each stage is preserved. The multilevel method applied here utilizes an algebraic fill-in method similar to the one proposed in BEPS but has been generalized to the multi-component multi-phase flow context.
-
-
-
Implicit scheme and domain decomposition method for multiphase fluid flow in porous medium
Authors E. Flauraud, I. Faille, F. Willien, F. Nataf and F. SchneiderWe are concerned with incompressible three-phase fluid flow in sedimentary basins cut by faults along which block displacements can occur (CERES project). In order to handle these complex geometries, we use Domain Decomposition (DD) techniques. Indeed, faults divide the basin into blocks that naturally define computational subdomains. The mathematical model that describes the physical phenomena leads to a strongly coupled nonlinear system of a hyperbolic equation for saturation and a parabolic equation for pressure.
-