James Edward Martin

Acquisition of marine point receiver seismic data with a towed streamer.

Summary A new concept for the acquisition of point receiver towed streamer data is introduced. Recording of point receiver data, rather than the analogue outputs of hardwired arrays, enables both dynamic group forming and enhanced attenuation of noise. Dynamic group forming allows better signal preservation and enhanced frequency recovery, particularly at far offsets. Data adaptive noise attenuation methods allows improved attenuation of the low frequency noise induced by water flow around the streamer, enabling the enhancement of the low frequency signal-to-noise ratio through avoidance of low cut filters. Point receiver marine seismic data will improve the dynamic range of the seismic signal and enhance the viability of time-lapse monitoring of reservoirs with towed streamer data.

Acquisition and processing of point source measurements in land seismic

Summary Point source recording is a viable field acquisition technique, which can improve the quality of seismic data. Appropriate pre-processing of the point source records, and subsequent group forming of these processed records, produces output shot records which offer better anti-alias protection, improved random noise attenuation and a more accurate correction for amplitude and static perturbations within the source array. The point source technique is intimately linked to point receiver recording, where similar pre-processing techniques can be applied. The recent