Method for rapid fault interpretation of fault surfaces generated to fit three-dimensional seismic discontinuity data
First Claim
1. A method to create a fault surface from a three-dimensional seismic data volume, comprising:
- constructing an initial fault surface in three-dimensions, said surface containing at least two fault sticks, the fault sticks being from the same fault but from different slices of the seismic data volume, each fault stick being defined by at least two fault nodes; and
reconstructing the initial fault surface to fit the three-dimensional seismic data, said reconstruction using an iterative evolution of a deformable surface model of the fault surface, said evolution being based on smoothness of the fault surface and a fault-indicating parameter of each location on the fault surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A method to extract fault surfaces from seismic data (1,3) is disclosed. The method comprises: (a) generating at least two fault sticks (5) from the same fault from at least two slices of the seismic data wherein each slice comprises at least one fault stick from the same fault, (b) constructing an initial three-dimensional fault surface (7) containing the fault sticks, and (c) reconstructing the initial fault surface (9) using a deformable surface model to fit discontinuity or coherency information in the seismic data in an iterative process. Techniques are disclosed for constructing the initial fault surface from interpreter-provided fault nodes, and for performing the deformable surface iteration by defining an energy function for the fault surface and then minimizing the surface energy.
-
Citations
14 Claims
-
1. A method to create a fault surface from a three-dimensional seismic data volume, comprising:
-
constructing an initial fault surface in three-dimensions, said surface containing at least two fault sticks, the fault sticks being from the same fault but from different slices of the seismic data volume, each fault stick being defined by at least two fault nodes; and
reconstructing the initial fault surface to fit the three-dimensional seismic data, said reconstruction using an iterative evolution of a deformable surface model of the fault surface, said evolution being based on smoothness of the fault surface and a fault-indicating parameter of each location on the fault surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification