Inversion study of the 2012 Reprocessed Pohokura dataset within 38154 PMP, offshore Taranaki Basin. This inversion study was initiated to apply Simultaneous Constrained Sparse Spike Inversion (Rocktrace) on the 2012 Reprocessed PSDM data. The objective of this study was to generate inversion products that supported reservoir quality distribution evaluations and reservoir characterisation. This data was successfully inverted to rock property volumes with good correlation between inverted P impedance and well P impedance.