Method for enhancing and evaluating seismic data

Patent · Tue Oct 16 04:00:00 EDT 1990

OSTI ID:6040678

Kelly, M C; Lindsay, R O

This patent describes a method for suppressing random noise and coherent noise exhibiting residual normal moveout and for enhancing primary reflection events, while preserving geologically induced amplitude variations as a function of range, in incident-angle-ordered gathers of seismic signals. It comprises: correcting incident-angle-ordered gathers of seismic signals for differences in traveltime to and from a common reflection point; summing the corrected seismic signals and obtaining a stacked signal; obtaining an amplitude envelope representative of the stacked signal; and obtaining a vector product of the amplitude envelope and each seismic signal of the incident-angle-ordered gather of seismic signals and suppressing random noise and coherent noise exhibiting residual normal moveout and enhancing primary reflection events while preserving its geologically-inducted amplitude variations as a function of range.

• Assignee: Amoco Corp., Chicago, IL (USA)
• Patent Number(s): A; US 4964102
• Application Number: PPN: US s 7-183872
• OSTI ID: 6040678
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000 -- Geosciences
AMPLITUDES
DATA PROCESSING
GEOPHYSICAL SURVEYS
PROCESSING
SEISMIC SURVEYS
SEISMIC WAVES
SURVEYS
TECHNOLOGY ASSESSMENT
VARIATIONS