Publications

While in the land environment wide-azimuth seismic surveys are routine, this approach is uncommon in the marine environment. Conventional marine 3D surveys acquire data using narrow azimuth streamer configurations even in structurally complex areas. Attempts at changing this paradigm have recently been made by the industry with good results, through the acquisition of some unconventional “Multi Azimuth (MAZ), “Wide Azimuth (WAZ) and “Rich Azimuth (RAZ) marine surveys. To address this issue a full azimuth, high density circular shooting survey was planned and acquired over the Bukat PSC in order to overcome well known geophysical challenges. Along with the acquisition a dedicated onboard QC was used to enable real time monitoring of illumination build-up at the target horizons. This paper reviews planning, acquisition QC and preliminary processing results of the “Full Azimuth (3D Coil) marine survey, acquired by WesternGeco on behalf of Eni Indonesia as Operator of the Bukat PSC in August 2008, using a Circular Shooting technique, on the Tulip East-1 discovery area. This is the world first industrial Circular Shooting 3D ever acquired, kindly and wisely supported by the Indonesian Authorities (BPMigas and Migas).