# US 11,906,680 B2 · Generalized internal multiple prediction

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- Number: US 11,906,680 B2
- Document ID: US11906680B2
- Status: Granted
- Kind: B2
- Application number: 17/538,489
- Filed: 2021-11-30
- Published: 2023-06-01
- Granted: 2024-02-20
- Earliest claimed: 2021-11-30
- Assignees: Saudi Arabian Oil Company
- Applicants: Saudi Arabian Oil Company
- Inventors: Dongliang Zhang; Constantinos Tsingas; Mohammed S. Mubarak; Ferhan Y. Ahmed
- Web page: https://patentgrep.com/patent/US11906680B2

## CPC

- G01V 1/28: Processing seismic data, e.g. for interpretation or for event detection (G01V1/48 takes precedence)
- G01V 1/345: {Visualisation of seismic data or attributes, e.g. in 3D cubes}
- G01V 1/30: Analysis (G01V1/50 takes precedence)
- G01V 1/364: {Seismic filtering (G01V1/37 takes precedence)}
- G01V 1/362: {Effecting static or dynamic corrections; Stacking}
- G01V 2210/1295: Land surface
- G01V 2210/1425: Land surface
- G01V 2210/32: Noise reduction
- G01V 2210/324: Filtering
- G01V 2210/60: Analysis
- G01V 2210/74: Visualisation of seismic data
- G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02)

## Abstract

A method for determining an internal multiple attenuated seismic image is disclosed. The method includes obtaining a seismic dataset composed of a plurality of seismic traces and for each seismic trace determining an internal multiple trace based, at least in part, on a nested truncated correlation and a bounded convolution of the seismic trace with itself. The method further includes determining an internal multiple attenuated seismic trace based, at least in part, on subtracting the internal multiple trace from the seismic trace and combining the internal multiple attenuated seismic trace to form the internal multiple attenuated seismic image. A system including a seismic source, a plurality of seismic receivers, and a seismic processor for executing the method is disclosed.

## Claims

### Claim 1

A method for determining an internal multiple attenuated seismic image, comprising:
obtaining a seismic dataset, wherein the seismic dataset comprises a plurality of seismic traces;
for each of the plurality of seismic traces, using a computer processor:
determining an internal multiple trace based, at least in part, on a nested truncated correlation and a bounded convolution of the seismic trace with itself, and
determining an internal multiple attenuated seismic trace based, at least in part, on subtracting the internal multiple trace from the seismic trace;
combining, using the computer processor, the internal multiple attenuated seismic trace determined for each of the plurality of seismic traces to form the internal multiple attenuated seismic image;
planning a wellbore path based, at least in part, on the internal multiple attenuated seismic image; and
drilling the wellbore path.

### Claim 2 (depends on 1)

The method of claim 1, wherein the seismic dataset comprises a post-stack dataset.

### Claim 3 (depends on 1)

The method of claim 1, wherein the bounded convolution comprises a bounded integral with bounds based, at least in part, on a width of a wavelet of the seismic trace.

### Claim 4 (depends on 3)

The method of claim 3, wherein the truncated correlation comprises a bounded integral with bounds based, at least in part, on the width of the wavelet of the seismic trace.

### Claim 5 (depends on 1)

The method of claim 1, wherein subtracting the internal multiple trace comprises an adaptive subtraction.

### Claim 6 (depends on 1)

The method of claim 1, wherein subtracting the internal multiple trace comprises matching filtering the internal multiple trace.

### Claim 7

A system for determining an internal multiple attenuated seismic image, comprising:
a seismic acquisition system configured to acquire a seismic dataset; and
a computer processor configured to:
receive a seismic dataset, wherein the seismic dataset comprises a plurality of seismic traces,
for each of the plurality of seismic traces:
determine an internal multiple trace based, at least in part, on a nested truncated correlation and a bounded convolution of the seismic trace with itself; and
determine an internal multiple attenuated seismic trace based, at least in part, on subtracting the internal multiple trace from the seismic trace;
combine, using the computer processor, the internal multiple attenuated seismic trace determined for each of the plurality of seismic traces to form the internal multiple attenuated seismic image, and
plan a wellbore path based, at least in part, on the internal multiple attenuated seismic image; and
a drilling system configured to drill the wellbore path.

### Claim 8 (depends on 7)

The system of claim 7, wherein the bounded convolution comprises a bounded integral with bounds based, at least in part, on a width of a wavelet of the seismic trace.

### Claim 9 (depends on 8)

The system of claim 8, wherein the truncated correlation comprises a bounded integral with bounds based, at least in part, on the width of the wavelet of the seismic trace.

### Claim 10 (depends on 7)

The system of claim 7, wherein subtracting the internal multiple trace comprises an adaptive subtraction.

### Claim 11 (depends on 7)

The system of claim 7, wherein subtracting the internal multiple trace comprises matching filtering the internal multiple trace.