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Article	Quads/Blocks
Released Well 21/6b-9 Central Graben Appraisal well on Avalon, a Cromarty Sandstone channel/slope apron fan pinch-out trap with dip to E from 4,470 ft to oil-water... Released Well \| Published 31 March 2021	21/6b 21/7b
Released Well 21/2a-11 Moray Forth/Witch Ground Graben Sparrowhawk West appraisal well with Kopervik Sandstone objective with oil and gas prognosed to 11,230 ft as extension of... Released Well \| Published 7 May 2020	21/2 21/2a 21/3a 21/3f
Completed Well 20/5b-14 Central Graben Sub-vertical appraisal well located NW and up-dip of Verbier discovery well 20/5b-13Z to confirm commercial oil reserves in... Completed Well \| Published 18 March 2020	20/5a 20/5b
The 2019 Supplementary 31st Licence Round Greater Buchan Area This article and associated downloadable tables (Greater Buchan Area–E&A Wells Drilled and Prospects) document the... Licensing Round Review \| Published 29 March 2019	14/29a 14/30a 15/26b 15/27 15/27a 20/4a 20/5a 20/5c 20/10b 21/1 21/1a 21/2
Completed Well 20/5b-13, 13Z Moray Firth/Witch Ground Graben Exploration well on the Verbier prospect; Lower Volgian (J64) fan sandstone objective in combination down-faulted/pinch-out... Completed Well \| Published 20 August 2018	20/5a 20/5b
Released Well 21/1a-26 Central Graben Near-vertical appraisal on NE Terrace prospect up-thrown from Tweedsmuir Field area. Lower Volgian (J65–J66) Burns Sandstone... Released Well \| Published 20 April 2018	21/1a
Released Well 15/27-E1Z Moray Firth/Witch Ground Graben Pilot hole for sub-horizontal East Rochelle gas/condensate production well. Deviated c. 2,100 ft ENE from surface location;... Released Well \| Published 17 April 2018	15/27
Completed Well 21/6b-9 Central Graben Deviated Avalon appraisal well to test W-E trending Cromarty channel feature with possible gas-cap over oil within Avalon AVO/... Completed Well \| Published 9 March 2018	21/6b 21/7b
Released Well 19/5b-2 Moray Firth / Witch Ground Graben Exploration well on the Griffon prospect, a NNE-SSW trending basal Cretaceous mound/channel play with lateral up-dip pinch-out... Released Well \| Published 27 October 2016	19/5b
Completed Well 21/6b-8 Central Graben Avalon exploration. A pinch-out play defined by strong amplitudes and AVO (with brightening on far stacks) within a Lower... Completed Well \| Published 10 February 2015	21/6b 21/7a 21/7b
The Permo-Carboniferous Play Western Flank of the Central Graben The development of a system of Carboniferous rift basins and horst blocks within the Central North Sea area west of the... Play Review \| Published 10 February 2015	29/24 29/27 30/16 30/17b 36/13 38/3 38/16 39/7 39/25
Released Well 38/10-1 Central Graben Four way dip closure with Upper Jurassic sands as the objective Released Well \| Published 24 September 2007	38/10
Hydrocarbon Play on the Mid North Sea High An In-Depth Review One of the most interesting Twenty Third Round awards was made to Esso (operator) and Shell for a group of twenty blocks... Play Review \| Published 1 August 2006	29/19 29/27 37/10 38/16 39/7
The UK 21st & 22nd Round Promote Review in the UKCS Licensing Round Review \| Published 1 June 2005