The UK’s BP has awarded four major contracts covering the exploration and appraisal of its central Khazzan and Makarem tight gas fields.Australia’s WorleyParsons has been awarded the select stage front-end engineering and design contract, which covers the evaluation of options for the appraisal phase of early production from the two fields (MEED 31:8:07). The second contract went to the US’ Global Geophysical Services to collect seismic data over 2,800 square kilometres. Norway’s PGS Data Processing has been awarded the contract to process the new seismic data and reprocess existing seismic data. Muscat-based Dalma Energy & Company will carry out the two-rig drilling programme. BP signed its upstream agreement with the Oil & Gas Ministry in December 2006. The deal involves the development of gas reserves in the two fields. These are estimated to contain 20 trillion cubic feet (tcf) of gas, which is more than 55 per cent of the sultanate’s total proven gas reserves of 35 tcf. The project will include drilling development wells to depths of 4,650 metres, the construction of processing facilities and the installation of pipelines for the supply of feed gas. The two fields contain a mix of sour and sweet gas in four tight reservoirs: Barik, Miqrat, Amri and Buah (MEED 22:12:06).