Design specifications for a 4-C ocean bottom sensor (OBS) survey at White Rose field, offshore Newfoundland
Kevin W. Hall, Monica Moldoveanu-Constantinescu, Robert R. Stewart
The CREWES project has been collaborating with Dalhousie University in acquiring ocean-bottom seismic data on the eastern Coast of Canada. In addition, we have been investigating the possibility of a multicomponent survey with Husky Energy over the White Rose field in the Jeanne d'Arc basin, offshore Newfoundland. It may be possible to acquire OBS data in conjunction with Dalhousie University in a proposed summer 2002 cruise offshore Newfoundland. To this end, we are beginning to design possible surveys. A 2-D survey with twenty-five metre shot spacing and two hundred metre receiver spacing could be acquired in less than four hours. A bin size equal to one-eighth the source spacing (twenty-five metres) results in a maximum P-P fold of 35, and P-S depth-specific fold of 31.
A 3D design consisting of twenty ocean bottom sensors at one kilometre spacing (twelve square kilometre patch), centred in a forty-two square kilometre patch of source lines (nine seven kilometre long source lines at zero degrees azimuth and nine six kilometre long source lines at ninety degrees azimuth) is preferred. This design results in a maximum P-P fold of ninety and P-S depth specific fold of seventy-two, for a one hundred and twenty-five metre bin size (one-eighth the receiver spacing).