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US 2017/0321523 A1Published application
Three-dimensional subsurface formation evaluation using projection-based area operations
AssigneeSchlumberger Technology Corporation
InventorsFrantz Maerten, Romain Plateaux, Jean-Pierre Joonnekindt, Stephen Grenfell, Mustapha Lejri
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Abstract
A method, apparatus, and program product utilize projection-based area operations to accelerate the determination of subsurface structure parameters for subsurface structures such as fractures, faults and horizons in a subsurface formation.
Claims16
A method of evaluating a subsurface formation, the method comprising:
- defining a subsurface structure within a plurality of cells of a three-dimensional model of the subsurface formation using a plurality of geometric primitives;
- determining an area of the plurality of geometric primitives within at least a subset of the plurality of cells by summing areas of individual geometric primitives within each of the subset of cells, including determining an area of a first geometric primitive among the plurality of geometric primitives within a first cell in the subset of cells by projecting the first geometric primitive onto each of first, second and third orthogonal planes respectively aligned with faces of the first cell to define respective first, second and third projections and calculating areas of each of the first, second and third projections;
- and
- determining a subsurface structure parameter for the subsurface structure from the determined area of the plurality of geometric primitives.
1 more element
An apparatus, comprising:
- at least one processing unit;
- and
- program code configured upon execution by the at least one processing unit to evaluate a subsurface formation by:
- defining a subsurface structure within a plurality of cells of a three-dimensional model of the subsurface formation using a plurality of geometric primitives;
- determining an area of the plurality of geometric primitives within at least a subset of the plurality of cells by summing areas of individual geometric primitives within each of the subset of cells, including determining an area of a first geometric primitive among the plurality of geometric primitives within a first cell in the subset of cells by projecting the first geometric primitive onto each of first, second and third orthogonal planes respectively aligned with faces of the first cell to define respective first, second and third projections and calculating areas of each of the first, second and third projections;
- and
- determining a subsurface structure parameter for the subsurface structure from the determined area of the plurality of geometric primitives.
4 more elements
A program product, comprising:
- a computer readable medium;
- and
- program code stored on the computer readable medium and configured upon execution by at least one processing unit to evaluate fracture abundance in a subsurface formation by:
- defining a subsurface structure within a plurality of cells of a three-dimensional model of the subsurface formation using a plurality of geometric primitives;
- determining an area of the plurality of geometric primitives within at least a subset of the plurality of cells by summing areas of individual geometric primitives within each of the subset of cells, including determining an area of a first geometric primitive among the plurality of geometric primitives within a first cell in the subset of cells by projecting the first geometric primitive onto each of first, second and third orthogonal planes respectively aligned with faces of the first cell to define respective first, second and third projections and calculating areas of each of the first, second and third projections;
- and
- determining a subsurface structure parameter for the subsurface structure from the determined area of the plurality of geometric primitives.
4 more elements
Dependencies are inferred from the claim text.