NDLI: 3D line-support grid flattening for more accurate geostatistical reservoir population with petrophysical properties

Content Provider	Springer Nature Link
Author	Bennis, Chakib Borouchaki, Houman Dumont, Cyrielle Lerat, Olivier Poudret, Mathieu Rainaud, Jean François
Copyright Year	2013
Abstract	Reservoir models are essential if we need to clearly understand the fossil resources and, hence, to make better use of them. Feeding these models with physical properties on the basis of wells data is a key step in their construction. Line-support (LS) grid is the most popular grid in reservoir engineering, it is massively used for reservoir simulations. In the current methods used to populate with properties the LS grid of a reservoir unit, a Cartesian grid of equivalent size (in each direction), obtained by averaging the edge lengths, is first of all completed. The properties calculated in this way are then transferred as they are into the initial LS grid, because there is cell-for-cell correspondence. This leads to distortion of the Cartesian grid, making it fit the shape of the LS grid. This has the effect of altering calculations of correlation distances between well markers in geostatistical population simulations. Consequently, this primarily induces distortions on the simulated bodies. To resolve this problem, in this paper, we propose innovative methods for a “smooth” conversion from the LS grid of the structural space to the Cartesian grid of the geostatistical population space. The basic principle is to calculate the correlation distances between wells on the basis of “quasi-isometric” flattening of the stratigraphic unit LS grid in the population space. This same flattening technique is then used for inverse transfer of the properties from the population space to the structural space.
Starting Page	403
Ending Page	421
Page Count	19
File Format	PDF
ISSN	01770667
Journal	Engineering with Computers
Volume Number	30
Issue Number	3
e-ISSN	14355663
Language	English
Publisher	Springer London
Publisher Date	2013-01-24
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Isometric surface unfolding Volume flattening Geostatistical reservoir population Line-support grids Computer-Aided Engineering (CAD, CAE) and Design Math. Applications in Chemistry Systems Theory, Control Calculus of Variations and Optimal Control; Optimization Mechanics ApplicationMathematics/Computational Methods of Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Computer Science Applications Modeling and Simulation Software

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