Portland reperfing from Angus QA section2 May 2022 21:37
From Technical Director: “The work to recomplete the well to the Portland will involve abandoning the bulk of the well through the Kimmeridge to leave just the topmost part across the Portland. We would then perforate that section.
I am assuming 5-6 days work plus mob and demob and rig up and rig down. The perforated section may be fairly long as it is near horizontal which is good. The rig can be the small workover rig we used at Saltfleetby and we need little in the way of tanks and pumps etc, although achieving our targets on waste management on such an operation will involve additional cost.”
That is the “operation” but before that and in addition to local authority planning (obtained), HSE (BSOR) submission, NTSA notification (although agreed in our FDP), we will require the consideration of the EA. We do not believe that this should be a very complex affair as the well-bore was well-designed and recently spudded to modern standards, the hydrogeology of the area is thoroughly understood, not least by EA, and the target reservoir has been produced from for thirty years.
On current oil prices, and given a resulting flow of 100bbl/d, it would not be unreasonable to assume that the cost of the operation could be recouped within 5-6 weeks of flow. Operationally speaking, would be no other upgrade to the site required