Vietsovpetro has suspended appraisal well, Ca Tam 5X (09-3/12-CT 5X) in Block 09-3/12, Cuu Long Basin, on or around 7 January 2018, as oil well. The well, spudded early October 2017 and it was drilled to a TD of 3,900 m using the âPV Drillingâ J/U. Four DSTs were conducted in the target interval, the Oligocene D unit. A steady flow approximately 1,800 bo/d was observed in two of the DST test. The last activity in the block was the drilling of appraisal well, 09-3/12-CT 4X (Ca Tam 4X) in between late May and mid-September 2016. The well, spudded in late May 2016 and drilled to a TD of 4,350 m MD (3,800 m TVDss) using the âTam Dao 02â J/U. Three DSTs have been conducted in the Lower Miocene section and one DST in the Oligocene unit. Cumulative test rate of 6,920 bo/d was encountered. It was reported that the well encountered more productive sands in the deeper section compared to the previous appraisal well, Ca Tam 3X.Â  The Oligocene unit tested around 3,960 bo/d with no water flow. Net oil saturated thickness of formations from both the appraisal wells could be more than 100 m. Block 09-3/12 is operated by Vietsovpetro with 55% interest alongside partners PVEP (30%) and Bitexco (15%). Vietsovpetro is a joint venture between PetroVietnam (51%) and Zarubezhneft (49%).
Ca Tam 5X (09-3/12-CT 5X) in Block 09-3/12, Cuu Long Basin, op. by VIETSOV (55.0%, PETROVIET 30.0%, BITEXCO 15.0%) in Block 09-3/12, oil well, Four DSTs were conducted in the target interval, the Oligocene D unit. A steady flow approximately 1,800 bo/d was observed in two of the DST test. 