Performance Review for Tag Oil (NZ) Ltd's Sidewinder operation located in PMP 53803, onshore Taranaki. The objective of this report was to evaluate the various methods used to enhance petroleum recovery and update volumetric estimates for gas and condensate reserves. Two methods of enhanced recovery are investigated-Compression and Artificial Lift. It is shown that Compression has been extremely effective at Sidewinder. Artificial Lift may provide additional gas recovery but requires an economic analysis to determine profitability.