As shown in Figure 3, our blended survey is based on independent marine-streamer simultaneous shooting (IMSSS). Figure 3 shows four independent marine-streamer sources. Note that the number of simultaneous sources need not be limited to four. They shoot independently as in the conventional way and yield their own data. For a 3D seismic survey, the IMSSS can help cover a 2D surface area efficiently. With four sources, the efficiency is increased by four times. The increased efficiency, however, is compromised by interference among the four sources.
Figure 3. Demonstration of independent marine-streamer simultaneous shooting (IMSSS).