Three dimensional before stack depth migration of two dimensional or three dimensional seismic data

Patent · Tue Oct 16 04:00:00 EDT 1990

OSTI ID:6089216

Johnson, J H

This patent describes a method to provide a three dimensional before stack depth migration of seismic data. It comprises: receiving seismic data as seismic traces; receiving an approximate depth mode; determining approximate locations for predetermined segments of the seismic traces; moving the predetermined segments to the approximate locations; scaling the predetermined segments to depth by obtaining three dimensional source and receiver positions on each trace and deriving a three dimensional raypath from the source to a primary objective map and to the receiver by locating raypaths having emergence points within a predetermined area around the receiver position; binning the scaled predetermined segments according to reflection point location; stacking the scaled predetermined segments contained in each bin; comparing the stacked scaled segments to the three dimensional model; and modifying the three dimensional model to conform to the stacked scaled segments.

• Assignee: Conoco Inc., Ponca City, OK (USA)
• Patent Number(s): US 4964103; A
• Application Number: PPN: US s 7-380228
• OSTI ID: 6089216
• 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
DATA PROCESSING
GEOPHYSICAL SURVEYS
PROCESSING
SEISMIC SOURCES
SEISMIC SURVEYS
SEISMIC WAVES
SURVEYS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS