Field Test of the Point Receiver Land AcquisitionTechnology Performed in Timimoun, Algeria

摘要

An acquisition field test was performed inAlgeria to assess the benefits of point receiver recording forenhancing the resolution and signal/noise ratio of land seismic surveys.Recording point receivers (or point sources) instead of the conventional receiver or source arrays enablespre-processing (such as intra-array static and amplitude corrections, surface noise attenuation) to beapplied before Digital Group Forming (DGF). Point receivers were simulated by bunching at the samelocation the six geophones of each string and a dense strip of 4 lines of 6 km of "point receivers" wasdeployed with a fine sampling of 6.25 m X 6.25 m. These additional test lines were simultaneouslyrecorded with the regular 3D receiver spread. Causing a minimal delay to the 3D operations, a pointreceiver 3D dataset of 2 km X 9 km was then recorded and compared to a 3D reference dataset ofequivalent fold and geometry. Equivalent but independent processing sequences were applied to bothdatasets, except the above pre-processing applied to point receivers before DGF. The results areencouraging for the use of point receiver technology in improving signal/noise and bandwidth in this area.