document: PT Medco Energi has completed Tala 2A and Tala 2C from its three-well exploration drilling campaign in the Rimau PSC, located in onshore South Sumatra, at end-December 2017. The wells were drilled at the Iliran High structure. Fluid sample testing is yet to be carried out on the two wells. The company plans to proceed with the third well, Tala 2B, likely in Q1 2018. The wells could be targeting heavy oil in shallow sandstone reservoirs of the Middle Miocene Telisa Formation. The operator previously spudded Tala 3 on 22 July 2012. The well was drilled to a TD of 115 m, with bottom-hole in the Pre-Tertiary Basement. The well encountered water and was abandoned in early August 2012. It was the sixth shallow well drilled within the Iliran High since September 2011, targeting heavy oil in the area. The previous wells in the campaign were Shallow Heavy Oil (SHO) 2, Tala 1, Tala 2, Taba 2 and Taba 1. Stratigraphic test well SHO 2 was abandoned in April 2012, with results unreported. The well was drilled to a TD of 555 m and may have targeted sandstones of the Upper Oligocene to Lower Miocene Talang Akar Formation, carbonates of the Lower Miocene Batu Raja Formation and sandstones of the Telisa Formation. Tala 1 was spudded on 27 February 2012, located 2.2 km east-southeast of the Tala 2 well and with a PTD of 103 m. The well was suspended with oil shows. Tala 1 was the fourth shallow well drilled within the Iliran High since September 2011. Tala 2 was likely suspended with oil shows in January 2012. The well, located about 3.8 km southeast of the Taba 2 well, was spudded on 4 December 2011 and was drilled to a TD of 94 m.  The first two exploration wells that were drilled at the same structure were Taba 1 and Taba 2. Both possibly encountered heavy oil as cyclic steam injection/stimulation were conducted. All the shallow wells drilled on the Taba and Tala structures were likely targeting the Middle Miocene Telisa shallow marine sandstones trapped in a faulted anticline structure, and were drilled using land rig âEMSCOâ. Rightholders of the block are Medco (95%, operator) and Perusahaan Daerah Pertambangan Energi (5%).
summary: Indonesia (South Sumatra B.) ? op. by MEDCO RM (95.0%, PDPDE 5.0%) in Rimau block