Method for inteval velocity analysis and determination of reflector position from before stack seismic data
This patent describes a method for determining the depth of a subsurface reflector. It comprises: receiving seismic data representing travel times of seismic pulses generated by seismic sources and received by a detectors; segregating the seismic data into data from selected source receiver pairs; determining constant travel time curves for each selected source receiver pair; selecting a vertical line in alignment with a basement position relative to each selected source receiver pair; determining the crossing points of all constant travel time curves that cross the vertical line representing the basement position; identifying the correct velocity by locating the section of the vertical line where the crossing points are most concentrated; calculating the minimum for each of the constant travel time curves; determining the tangent to each of the constant travel time curves at the minimum; and identifying the location of the reflector by connecting the tangents to each of the constant travel time curves.
- Assignee:
- Conoco Inc., Ponca City, OK (USA)
- Patent Number(s):
- US 4918670; A
- Application Number:
- PPN: US 7-310971A
- OSTI ID:
- 6755503
- Resource Relation:
- Patent File Date: 15 Feb 1989
- Country of Publication:
- United States
- Language:
- English
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