RNS 15/01/2118 Feb 2022 12:01
Water reinjection plans
Formation water production and an associated drop in overall oil production is entirely normal in conventional oil fields, and its management, necessary to optimise net revenue, is routine oil field practice. For this reason, Horse Hill's planning consent included a provision for a formation water reinjection well.
Consequently, to remove the need for expensive off-site water disposal via tanker and to also help maximise oil recovery by supporting reservoir pressure, HH-2z will now be reconfigured, subject to regulatory consent, into a water re-injection well as soon as practicable. Additional, optimally sited, production infill wells are planned to replace HH-2z as per the original field development plan (see below).
The necessary regulatory consent process for water injection is underway, with permissions currently expected in the second calendar quarter, subject to any pandemic related delays. Until such permissions are in place, it is planned to manage pumping and resultant oil production to maintain water cut at, or, hopefully, below the current level.