@article{eage:/content/journals/10.3997/1365-2397.1994017, author = "Cooke-Yarborough, P.", title = "Analysis of fractures yields improved gas production from Zechstein carbonates, Hewett Field, UKCS", journal= "First Break", year = "1994", volume = "12", number = "5", pages = "", doi = "https://doi.org/10.3997/1365-2397.1994017", url = "https://www.earthdoc.org/content/journals/10.3997/1365-2397.1994017", publisher = "European Association of Geoscientists & Engineers", issn = "1365-2397", type = "Journal Article", abstract = "The Hewett Field complex, discovered twenty seven years ago, is located in the south-west of the Southern North Sea Basin (United Kingdom sector). Gas is currently being produced from four separate reservoirs: Upper and Lower Bunter sandstones as well as Rotliegendes sandstones and Zechstein dolomites (Fig. 1). Figure 2 is a generalized stratigraphic section for the south-west part of the basin. The Zechstein is a sequence of carbonate and evaporitic rocks of late Permian age, which underlies a considerable area of north-west Europe. In places, five cycles can be identified: Z1 to Z5. A typical cycle reflects the influence of increasing salinity through evaporation following an initial marine incursion.", }