Nutech Ltd. has upped estimates of total oil in place at the Horse Hill-1 (HH-1) well in the Weald basin of southern England to 158 million bbl/sq mile, excluding the previously reported Upper Portland Sandstone oil discovery . US analogues have estimated recovery factors of 3-15%, which may be produced using conventional technology. In a report to UK Oil & Gas Investments PLC (UKOG), which holds 20.36% interest in the 55-sq-miles Horse Hill licenses near Gatwick airport, Nutech says the oil lies within a 653-ft aggregate net pay section, primarily within three argillaceous limestones and interbedded mudstones of the Kimmeridge and the mudstones of the Oxford and Lias sections. About 72% of the oil in place—114 million bbl—lies within the Upper Jurassic Kimmeridge interbedded limestone and mudstone sequence. “Drilling the deepest well in the basin in 30 years, together with the ability to use concepts, techniques, and technology unavailable […]