Method of migrating seismic records
First Claim
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1. A method of migrating first and second seismic records, comprising:
- a) forming a first encoded seismic record by phase encoding said first seismic record;
b) forming a second encoded seismic record by phase encoding said second seismic record;
c) forming a combined record by combining said first encoded seismic record and said second encoded seismic record; and
d) forming a migrated record by migrating said combined record.
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Abstract
The present invention provides a method of migrating seismic records that retains the information in the seismic records and allows migration with significant reductions in computing cost. The present invention comprises phase encoding seismic records and combining the encoded seismic records before migration. Phase encoding can minimize the effect of unwanted cross terms while still allowing significant reductions in the cost to migrate a number of seismic records.
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Citations
26 Claims
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1. A method of migrating first and second seismic records, comprising:
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a) forming a first encoded seismic record by phase encoding said first seismic record; b) forming a second encoded seismic record by phase encoding said second seismic record; c) forming a combined record by combining said first encoded seismic record and said second encoded seismic record; and d) forming a migrated record by migrating said combined record. - View Dependent Claims (2, 3, 4, 5, 23)
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6. A method of migrating a first plurality of seismic records, comprising:
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a) forming a plurality of encoded seismic records by phase encoding each of said seismic records; b) forming a combined record by combining said encoded seismic records; and c) forming a migrated record by migrating said combined record. - View Dependent Claims (7, 8, 9, 10, 24)
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11. A method of migrating a plurality of seismic records, comprising:
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a) selecting a first seismic record and a second seismic record from said first plurality of seismic records; b) forming a first encoded seismic record by phase encoding said first seismic record; c) forming a second encoded seismic record by phase encoding said second seismic record; d) forming a combined record by combining said first encoded seismic record and said second encoded seismic record; e) forming a migrated record by migrating said combined record; and f) repeating steps a) through e) until all of said first plurality of seismic records have been migrated. - View Dependent Claims (12, 13, 14, 15, 16, 25)
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17. A method of migrating a first plurality of seismic records, comprising:
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a) forming a second plurality of selected seismic records from said first plurality of seismic records; b) forming a plurality of encoded seismic records by phase encoding each of said selected seismic records; c) forming a combined record by combining said encoded seismic records; d) forming a migrated record by migrating said combined record; e) repeating steps a) through d) until all of said first plurality of seismic records have been migrated. - View Dependent Claims (18, 19, 20, 21, 22, 26)
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Specification