Business
Completion of Colter Appraisal Campaign
Completion of Colter Appraisal Campaign.
About this update from United Oil & Gas Plc
[{"type":"text","content":"\n \nRNS Number : 2430S United Oil & Gas PLC 08 March 2019 \n\nUnited Oil & Gas PLC / Index: LSE / Epic: UOG / Sector: Oil & Gas \nUnited Oil & Gas PLC (\"United\" or the \"Company\") \nCompletion of Colter Appraisal Campaign \n \nHighlights\n· 98/11a-6 well delivers a new discovery at Colter South\n· Sidetrack to the north to delineate the original Colter appraisal target encountered the Sherwood Sandstone reservoir deeper than expected, indicating the Colter accumulation is smaller than pre-drill estimates\n· Oil and gas shows encountered in the sidetrack in shallower Jurassic intervals mirror the producing Kimmeridge oil field, and provide encouragement for the prospectivity of the adjoining JV-held onshore licences\n· Further work will now commence to fully evaluate all the data from the well and assess forward work programmes and options for commercialisation\n \nUnited Oil & Gas Plc, the AIM listed oil and gas exploration and development company, provides an operational update on the P1918 licence in the Wessex Basin and specifically the Colter appraisal campaign which has included the Colter North and the new Colter South prospects. United holds a 10% stake in the licence, which is operated by Corallian Energy.\nAs previously reported on 25 February 2019, the Colter well (98/11a-6) was drilled as a vertical well with the Ensco-72 jack-up rig and reached a Total Depth of 1,870m MD in the Sherwood Sandstone. The well was drilled to appraise the 98/11-3 well, drilled in 1986 by British Gas, within the Colter Prospect. The 98/11a-6 well remained on the southern side of the Colter Prospect bounding fault but encountered oil and gas shows over a 9.4m interval at the top of the Sherwood Sandstone reservoir. A petrophysical evaluation of the LWD data has calculated a net pay of 3m. Similar indications of oil and gas were encountered in the 98/11-1 well, drilled in 1983 by British Gas, within the Colter South fault terrace. Provisional analysis of the new data indicates that the two wells may a share a common oil-water-contact having both intersected the down-dip margin of the Colter South prospect. Corallian's most recent assessment of the Colter South Prospect prior to drilling the 98/11a-6 well had estimated a m...