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Short Communications

Two-way time–depth relationship for Waka Nui-1 well to aid geological interpretations of the offshore northwestern New Zealand

Pages 341-346 | Received 25 Nov 2010, Accepted 25 Feb 2011, Published online: 31 Aug 2011

Figures & data

Figure 1 Location map of Waka Nui-1 and some of the more modern seismic data (red lines) tied to the well.

Figure 1  Location map of Waka Nui-1 and some of the more modern seismic data (red lines) tied to the well.

Figure 2 Summary of Waka Nui-1 well data showing gamma ray (GR), resistivity (LWD), density (RHOB) and neutron porosity (TNPH) logs, lithology and stratigraphy (from Waka Nui-1 Well Sheet 1:10,000, version 3.06.2008, Enclosure 1 of Stagpoole et al. 2009).

Figure 2  Summary of Waka Nui-1 well data showing gamma ray (GR), resistivity (LWD), density (RHOB) and neutron porosity (TNPH) logs, lithology and stratigraphy (from Waka Nui-1 Well Sheet 1:10,000, version 3.06.2008, Enclosure 1 of Stagpoole et al. 2009).

Figure 3 TWT–depth relationship for the Waka Nui-1 well (grey line connecting blue dots). Crosses show the stacking velocity data derived during processing of the seismic data on nearby seismic lines and the red line shows the interval velocities calculated from seismic or TWT–depth function.

Figure 3  TWT–depth relationship for the Waka Nui-1 well (grey line connecting blue dots). Crosses show the stacking velocity data derived during processing of the seismic data on nearby seismic lines and the red line shows the interval velocities calculated from seismic or TWT–depth function.

Figure 4 Seismic data from line CNL95-034 at the Waka Nui-1 well with overlays showing the density log (RHOB converted to TWT-left of well), a synthetic seismogram (overlaid on the well) and depths of formations (to the right of well).

Figure 4  Seismic data from line CNL95-034 at the Waka Nui-1 well with overlays showing the density log (RHOB converted to TWT-left of well), a synthetic seismogram (overlaid on the well) and depths of formations (to the right of well).

Table 1  Depth, two-way time and interval velocity data derived for the Waka Nui-1 well site.

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