G - Physics – 10 – K
Patent
G - Physics
10
K
181/11
G10K 11/00 (2006.01) G01V 1/00 (2006.01)
Patent
CA 1221314
ABSTRACT OF THE DISCLOSURE METHOD OF ATTENUATING SEA ICE FLEXURE NOISE DURING SEISMIC SURVEYS OF PERMAFROST REGIONS INVOLVING A PRECURSOR AERIAL AND/OR SATELLITE MAPPING STEP The present invention indicates that in exploration of permafrost regions of the world for oil and gas accumulations, flexure noise can be attenuated by careful placement of the vibratory source vis-a-vis the receiver array during collection of the Vibroseis ? -type data. If the explorationist adopts a survey strategy in which the vibratory source is separated from the receiver array by a pressure ridge or its equivalent over the ice formation of the region under survey, then - surpris- ingly - the seismic reflection signals can be easily collected and displayed. Result: continuity of events from onshore reflec- tors can be easily followed offshore through the transition zone into deeper sea ice regions. He is aided in formulating his exploration strategy by the use of aerial and/or radar photo- graphs or LANDSAT unmanned satellite data for mapping the pressure ridges of the area under survey.
466648
Chevron Research And Technology Company
Sim & Mcburney
LandOfFree
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