Method of seismic data enhancement using a phase of rectified trace seismic parameter

• US 4,633,399 A
• Filed: 03/05/1984
• Issued: 12/30/1986
• Est. Priority Date: 03/05/1984
• Status: Expired due to Fees

• Current Assignee: Conoco Incorporated (ConocoPhillips)
• Original Assignee: Conoco Incorporated (ConocoPhillips)
• Inventors: Baumel, Robert T., Stebens, Beverly, Terral, Donna K., Parsons, Roger K., Yedlin, Matthew J.
• Primary Examiner(s): Smith, Jerry
• Assistant Examiner(s): Meyer, Charles B.
• Application Number:
  US06/574,059
• Time in Patent Office: 1,030 Days
• Field of Search: 364/421, 367/48, 367/68, 367/70, 381/70, 381/71
• US Class Current: 702/16
• CPC Class Codes: G01V 1/28 Processing seismic data, e.g. for interpretation or for event detection G01V1/48 takes precedence
• CPC Class Codes: G01V 2210/20 Trace signal pre-filtering to select, remove or transform specific events or signal components, i.e. trace-in/trace-out removing noise G01V2210/32

Abstract

A method for developing a novel seismic data attribute enables improvements in seismic data processing and interpretation. Seismic signals or trace data are first rectified and then Hilbert transformed and processed with the arc tangent function to develop a new instantaneous phase parameter referred to as phase of rectified trace (PORT). Output data may be further enhanced with tri-modal, interactive color display.

Claims

1. The method of developing a specific seismic data parameter from seismic trace data, comprising:

receiving processed seismic trace data for a selected plane of investigation;

rectifying said seismic trace data;

producing the Hilbert transform of said rectified trace data;

determining the instantaneous phase using Hilbert transformed rectified data; and

interpreting geological significance of the plane of investigation using instantaneous phase of the rectified and transformed data.

2. The method of claim 1 wherein said step of interpreting comprises:

visually displaying the instantaneous phase data for a selected portion of said plane of investigation.

3. The method as set forth in claim 2 wherein said step of visually displaying comprises:

generating image data for said instantaneous phase data; and

outputting said image data on a visual display.

4. The method as set forth in claim 3 which further includes:

using multi-color video display and assigning different colors to different polarities of said instantaneous phase data.

5. The method as set forth in claim 4 which includes the step of:

interactively varying the association of colors and color intensities in said multi-color video display.