Method for inversion of seismic data to yield estimates of formation lithology
This patent describes a method for displaying estimates of selected combinations of formation lithology obtained from seismic reflectivity data. It comprises: forming a coordinate system having first and second axes each representative of selected formation elastic properties; enclosing a region on the coordinate system defining a relationship between selected combinations of formation lithology and the selected formation elastic properties; subdividing the enclosed region into a plurality of bins, wherein each bin corresponds to a selected combination of formation lithologies; assigning a numeric identifier to each bin representative of separate combinations of formation lithologies; crossplotting pairs of selected formation elastic properties obtained from the seismic reflectivity data on the coordinate system and associating each crossplotted pair of selected formation properties with a numeric identifier corresponding to a selected combination of formation lithologies; transforming each numeric identifier associated with a selected combination of formation lithology into a selected color; and plotting the selected colors as a chromatic lithology section wherein each color represents a selected combination of formation lithologies.
- Assignee:
- Amoco Corp., Chicago, IL (USA)
- Patent Number(s):
- A; US 4964096
- Application Number:
- PPN: US s 7-197947
- OSTI ID:
- 6040710
- Country of Publication:
- United States
- Language:
- English
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