RE: Fracking14 Feb 2022 16:08
HH-1 Kimmeridge from my notes.
1 Oct 19
UK Oil & Gas PLC (London AIM: UKOG) is pleased to announce that following this morning's arrival of a small workover rig, planned routine intervention operations at its 85.635% owned Horse Hill-1 well have now commenced. The short intervention seeks to further optimise oil flow via reperforating the full Portland oil producing section, insertion of a new simplified production tubing string and by setting the downhole pump at a deeper level to increase pumping efficiency.
5 Nov 19
UK Oil & Gas PLC (London AIM: UKOG) is pleased to announce that surface-based intervention operations at its 85.635% owned Horse Hill-1("HH-1") well have now has been completed. The well has now been shut in for a long term pressure build up test ("PBU"), designed to provide data necessary to understand whether the Portland reperforation programme has achieved the desired optimisation of well inflow performance.
As previously announced on October 1st, the intervention's objective was to optimise oil flow by reperforating the full Portland oil producing section, inserting a new production tubing string and thus enabling the downhole pump to be placed at a deeper level. Originally the intervention was planned for April/May but, due to the COVID-19 lockdowns in both the UK and USA, a further unforeseen 6-month delay was introduced. Further updates will be reported when the PBU data has been fully analysed and interpreted.
The HH-1 intervention and other related activities are part of normal oil well optimisation. By their very nature, these operations and the continual need to optimise pump performance, can result in considerable down time i.e. periods of no production as such monthly or annual production figures may not fully reflect the long term flow rates of the well.
28 Jan 20 Kimmeridge shut in for PBU test. What happened between test and 9 Mar?
9 Mar 20 Port and Kimmeridge shut in for 10 days
13 Mar 20 Kimmeridge production planned for late spring
1 Oct 20 Routine intervention. Did reperforation, inserting a new production tubing string or placing the downhole pump at a deeper level affect anything? Kimmeridge perforations isolated.
15 Jan 21 .... further development of the Kimmeridge oil pool also remains a significant objective for the Company. Consequently, plans have now been made for an infill well to determine the lateral extent of the Kimmeridge oil pool, proven by HH-1 to lie within a natural fracture system of significant vertical extent.
The Kimmeridge HH-4 well, also situated updip of both HH-1 and HH-2z, is likely to be a highly inclined or "slant" well, designed with a lateral orientation approximately orthogonal to the known regional open natural fracture direction, so as to maximise the number of open fractures penetrated.
It is expected that the further HH-3 and HH-4 wells will be planned in detail and drilled at Horse Hill following the completion of the Company's Turkey Basur-Resan appraisal dri