Horizon Oil Limited reported that the WZ6-12 five well workover programme has been successfully completed, with all five wells brought back on-line and as of 5 September producing a total of 2,432 bopd gross (655 bopd Horizon net), which is an incremental benefit of 1,568 bopd (423 bopd Horizon net) when compared to the total rate prior to the commencement of the workover programme. Total Block 22/12 production on 5 September was 15,628 bopd gross (Horizon net 4,212 bopd). Following the completion of the workover programme, the previously announced WZ6-12 M3 appraisal well was spudded on 2 September using a spare slot on the WZ6-12 wellhead platform.

M3 is currently drilling ahead in 12-1/4" hole to the targeted multiple stacked Weizhou reservoir sands. Horizon also announced that the Joint Venture has agreed to drill an additional WZ6-12 North infill well after the M3 well. This infill well will be drilled as a sidetrack of the high water-cut A10 well and is targeted to recover mid-field oil that would not be drained by the other four WZ6-12 North wells.