Title:
DISTANCE-AND FREQUENCY-SEPARATED SWEPT-FREQUENCY SEISMIC SOURCES
Document Type and Number:
WIPO Patent Application WO/2012/078966
Kind Code:
A3
Abstract:
There is provided a method of seismic acquisition that utilizes a bank of restricted-bandwidth swept-frequency sub-band sources as a seismic source. Each seismic source will cover a restricted sub-band of frequencies, with all the sources taken together covering the full frequency range. Adjacent frequency bands may partially overlap, but non-adjacent frequency bands should not. The sources may be divided into two or more groups, with no sources covering adjacent frequency bands being placed in the same group. The sources within a group can then be separated by bandpass filtering or by conventional simultaneous source-separation techniques. The source groups may be operated simultaneously but separated in space, and the individual sources themselves may each operate independently, on a sweep schedule customized for that particular source.
Inventors:
DELLINGER JOSEPH A (US)
ABMA RAYMOND (US)
ABMA RAYMOND (US)
Application Number:
PCT/US2011/064120
Publication Date:
January 03, 2013
Filing Date:
December 09, 2011
Export Citation:
Assignee:
BP CORP NORTH AMERICA INC (US)
DELLINGER JOSEPH A (US)
ABMA RAYMOND (US)
DELLINGER JOSEPH A (US)
ABMA RAYMOND (US)
International Classes:
G01V1/00
Domestic Patent References:
| WO2000072049A1 | 2000-11-30 |
Foreign References:
| US20040089499A1 | 2004-05-13 | |||
| EP0047547A2 | 1982-03-17 | |||
| US4914636A | 1990-04-03 | |||
| EP2184619A2 | 2010-05-12 |
Attorney, Agent or Firm:
SHUNG, Albert, K. (150 W. Warrenville Road MC 200-1, Naperville IL, US)
Download PDF: