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HH-1 and HH-2z Extended Well Test Update
HH-1 and HH-2z Extended Well Test Update.
About this update from Uk Oil & Gas Plc
[{"type":"text","content":"\n \nRNS Number : 7435X UK Oil & Gas PLC 23 December 2019 \n\nUK Oil & Gas PLC\n(\"UKOG\" or the \"Company\")\n \nHorse Hill Oil Field: HH-1 and HH-2z Extended Well Test (\"EWT\") Update\n \nUK Oil & Gas PLC (London AIM: UKOG) is pleased to announce the successful completion of the first phase of open hole EWT and associated well clean-up at its Horse Hill-2z (\"HH-2z\") horizontal well, in which the Company has an 85.635% net controlling interest. During the initial clean-up phase, HH-2z achieved initial rates of up to 1,087 barrels of fluids per day and oil cuts of up to 60%, demonstrating the horizontal's ability to flow at rates significantly greater than the HH-1 vertical well. Produced oil, brought to surface via an electronic submersible pump or \"ESP\", has been exported to Perenco's Hamble oil terminal for onward sale at market price. \n \nHH-2z is currently shut-in for a scheduled long duration pressure build-up test (\"PBU\"), during which time preparations will be finalised for a series of planned interventions to further optimise flow rates from the Portland reservoir's sweet-spot. \n \nWhilst HH-2z continued to clean-up prior to the current shut-in, returning oil, completion and drilling fluids to surface, evidence of formation water ingress was also recorded. Consequently, an additional routine intervention is planned to shut-off the water source, currently interpreted to be from an open natural fracture in the \"toe\" (or far end) of the horizontal trajectory. During the \"long-term production\" phase, which will follow after the EWT, formation water will likely be reinjected to maintain reservoir pressure and to minimise water disposal costs.\n \nThe HH-2z interventions are planned to commence in the New Year following completion of the ongoing HH-2z PBU and will be reported in due course. \n \nDownhole pressure gauges also confirmed that HH-2z penetrated a near virgin pressure section of the Portland oil pool. This finding has likely positive implications for the magnitude of connected oil in place and recoverable reserves seen by the field's two wells. Determining the oil volume connected to HH-2z remains a key EWT objective. \n \nImmediately following the current HH-2z shut-in, flow lines were reconnected to HH-1 and dry Kimmeridge oil flow was resumed...