Located in blocks 205/21a, 205/22a and 205/26b and in relatively shallow water depths of 160 metres, Lancaster was the first basement prospect drilled by Hurricane and proved to be a significant discovery.
Lancaster was drilled in 2009 and subsequently sidetracked in 2010, with well testing flowing light (38° API) oil to surface from the fractured basement. The results of the drilling also indicated that significant upside potential could exist within Lancaster as oil shows were encountered at depth within the basement. The Competent Person's Report (CPR) undertaken by RPS in 2010 assigns 207 MMboe of 2C Contingent Resources to Lancaster and concludes that individual well flow rates up to 8000 bopd are achievable from the basement.
3D Section through the geology, indicating the initial Lancaster pilot well (in red) and subsequent sidetrack (in green). Not to scale.
We are now preparing an appraisal drilling programme for Lancaster in order to constrain the resource volumes including the upside potential and also to further investigate the productivity of the fractured basement reservoir. Thereafter, a phased development plan is envisaged.
The diagram below indicates a comparison of various well known buildings with the depth of the Lancaster structure and indicates the approximate path of the horizontal drilled in Q2 2014.
- The red line represents the depth from which the 1C Contingent Resource case is based, 62 million barrels.
- The second line in orange represents the 2C case for Lancaster at 207 million barrels.
- The third line in green represents the 3C case, some 456 million barrels.