Digital seismic file scanner

Patent metadata

Field	Value
Publication number	US-12099154-B2
Application number	US-202218556432-A
Country	US
Kind code	B2
Filing date	Apr 20, 2022
Priority date	Apr 21, 2021
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

A method includes obtaining a digital seismic file, performing autodetection of parameters of the digital seismic file, and registering the parameters of the digital seismic file with the digital seismic file. Performing autodetection comprises a computer processor, repetitively until a candidate template successfully extracts the parameters, selecting a target candidate template, attempting extraction of a binary header using the target candidate template, attempting extraction of a trace header using the target candidate template, attempting extraction of the plurality of parameters when the target candidate template extracts the binary header and the trace header, and moving to a next target candidate template when extraction of the plurality of headers is unsuccessful.

First claim

What is claimed is:

1. A method comprising:
obtaining a digital seismic file;
performing autodetection of a plurality of parameters of the digital seismic file, wherein performing autodetection comprises a computer processor repetitively at least until a candidate template successfully extracts the plurality of parameters:
selecting a target candidate template,
attempting extraction of a binary header using the target candidate template,
attempting extraction of a trace header using the target candidate template,
attempting extraction of the plurality of parameters when the target candidate template extracts the binary header and the trace header, and
moving to a next target candidate template when extraction of the plurality of headers is unsuccessful; and

registering the plurality of parameters of the digital seismic file with the digital seismic file.

2. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting whether shot point (SP) value, common depth point (CDP) value, inline value, and crossline value in the digital seismic file are constant values;
detecting whether a source X value and a source Y value in the digital seismic file are both constant values; and
determining that the target candidate template is unsuccessful if at least one selected from the group consisting of the SP value, CDP value, inline value, and crossline value are constant values and the source X value and the source Y value are both constant values.

3. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting that a plurality inline values form a step increase or step decrease;
detecting that a plurality of crossline values increases or decreases for each inline value of the plurality of inline values;
detecting that seismic data in the digital seismic file is post stacked when a crossline value of the plurality of crossline values is not repeated.

4. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting that a plurality inline values form a step increase or step decrease;
detecting that a plurality of crossline values increases or decreases for each inline value of the plurality of inline values;
detecting that seismic data in the digital seismic file is pre-stacked when a crossline value of the plurality of crossline values is repeated.

5. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting that a plurality crossline values form a step increase or step decrease;
detecting that a plurality of inline values increases or decreases for each crossline value of the plurality of crossline values;
detecting that seismic data in the digital seismic file is post stacked when an inline value of the plurality of inline values is not repeated.

6. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting that a plurality crossline values form a step increase or step decrease,
detecting that a plurality of inline values increases or decreases for each crossline value of the plurality of crossline values, and
detecting that seismic data in the digital seismic file is pre-stacked when an inline value of the plurality of inline values is repeated.

7. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting a failure of the target candidate template when a first set of values form a step increase or decrease and a second set of values fail to increase or decrease for each value in the first set of values,
wherein the first set of value and the second set of values are a plurality of inline values and a plurality of crossline values.

8. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting a spread of a plurality of source X values and a plurality of source Y values, and
based on a spread satisfying a threshold area, determining that seismic data in the digital seismic file is a three-dimensional file.

9. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting a spread of a plurality of source X values and a plurality of source Y values, and
based on a spread being linear within a tolerance, detecting a failure of the target candidate template to extract the plurality of parameters.

10. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting that a plurality of CDP values is continually increasing or decreasing,
detecting a uniqueness of the plurality of CDP values,
detecting that a plurality of SP values is continually increasing or decreasing,
identifying, based on the determination the plurality of CDP values is continually increasing or decreasing, the uniqueness, and that the plurality of SP values is continually increasing or decreasing, the plurality of parameters as comprising:
a plurality of sort keys being the plurality of CDP values,
a survey type being two-dimensional, and
seismic data being post-stacked.

11. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting that a plurality of CDP values is continually increasing or decreasing,
detecting a lack of uniqueness of the plurality of CDP values,
determining that a prior target candidate template failed to identify seismic data to be post-stacked,
detecting that a plurality of SP values is continually increasing or decreasing,
identifying, based on the determination the plurality of CDP values is continually increasing or decreasing, the lack of uniqueness, the prior target candidate template failing to identify the seismic data as post-stacked, and that the plurality of SP values is continually increasing or decreasing, the plurality of parameters as comprising:
a plurality of sort keys being the plurality of CDP values, and
seismic data being post-stacked.

12. The method of claim 1 , wherein attempting extraction of the plurality of parameters comprises:
detecting that a plurality of CDP values is not continually increasing or decreasing,
detecting that a plurality of SP values forms a step increase or decrease function,
identifying, based on the determination the plurality of CDP values is not continually increasing or decreasing, and that the plurality of SP values is continually increasing or decreasing, the plurality of parameters as comprising:
a plurality of sort keys being the plurality of SP values, and
seismic data being pre-stacked.

13. A system comprising:
memory; and
a processor for executing computer readable code configured to perform operations comprising:
obtaining a digital seismic file;
performing autodetection of a plurality of parameters of the digital seismic file, wherein performing autodetection comprises a computer processor repetitively at least until a candidate template successfully extracts the plurality of parameters:
selecting a target candidate template,
attempting extraction of a binary header using the target candidate template,
attempting extraction of a trace header using the target candidate template,
attempting extraction of the plurality of parameters when the target candidate template extracts the binary header and the trace header, and
moving to a next target candidate template when extraction of the plurality of headers is unsuccessful; and

registering the plurality of parameters of the digital seismic file with the digital seismic file.

14. The system of claim 13 , wherein a

Assignees

• Schlumberger Technology Corp

Inventors

• Gupta Rishabh
• Patel Svapanil
• Sinha Udit

Classifications

• G01V1/247 Primary

  Digital recording of seismic data, e.g. in acquisition units or nodes · CPC title

• G01V2210/514

  Post-stack · CPC title

• G01V2210/512

  Pre-stack · CPC title

• G01V1/362 Primary

  Effecting static or dynamic corrections; Stacking · CPC title