A field test of the point vibrator land acquisition technology

Recording point receivers or point sources instead of the conventional receiver or source arrays enables individual corrections to be applied before Digital Group Forming (DGF) to compensate for:<br>- Static variations due to different weathered zone conditions or elevations between the different receivers or sources of the same group,<br>- Amplitude variations due to different coupling conditions,<br>- Move-out differences at far offsets.<br>In addition, a finer spatial sampling of the point receiver or source spread along the inline and crossline directions improves the filtering of source generated surface noise.<br>A field test of the point source and point receiver methods was performed in 2006 by inserting a point source line and a point receiver line within a “conventionalâ€ 3D survey acquired with source and receiver arrays. The objective was to allow a fair comparison of these two test datasets with reference array datasets acquired with equivalent fold and geometry.