FIGURE 12. (A) Inline 651 is a depositional strike section through the reservoir (see Figure 1 for location). The medial portion of the reservoir (Diana 1 well penetration) has a distinctly different seismic character than the updip interpreted proximal portion of the reservoir (Figure 11A) and is represented by a high-amplitude, semicontinuous seismic character above the gas-oil contact. The observed lateral variation in seismic character of the A-50 sands in the vicinity of Diana 1 suggests that seismically detectable variations in net-to-gross and reservoir architecture exist. (B) The forward seismic model of the channels/sheets, which characterize proximal to medial fan transition in the Ross Formation, bears a striking resemblance to the seismic character of the A-50 reservoir where Diana 1 is drilled. (C) The seismic character of this segment of the reservoir, therefore, suggests this portion of the A-50 reservoir is less channelized than updip in the vicinity of Diana 2 and Diana 3.