Structure and Plays
1 August 2014

During 2004 and 2005, Exploration Geosciences (UK) Ltd. prepared a detailed evaluation of the Triassic play within the high pressure/high temperature (HPHT) province of the UK Central Graben as a DECC sponsored EUPP study (Exploration of Unproven Plays). Led by Chevron, with partners Gaz de France, CNR, Ruhrgas, RWE Dea and BG, this project sought to determine the Triassic prospectivity of the HPHT area. The project included detailed mapping from regional 3D seismic datasets and a full analysis of Triassic stratigraphy and of reservoir quality and distribution, incorporating data from all Well drilled to the Triassic within and adjacent to the HPHT area. Triassic reservoirs were discussed in the United Kingdom Discovery Digest volume 27, pages 43-61. In this article we discuss the structural setting and development of the HPHT area and the play types and structural styles associated with Triassic oil and gas/condensate fields, discoveries and undrilled prospects, illustrated by seismic examples provided by CGG.