Similar facies showing Marinella bioclasts associated with oolites were described in the Portuguese Upper Jurassic
(Leinfelder et al.
Oil and gas have been found in the Tarbert formation in the upper Brent group structure, while gas has been also proven in Upper Jurassic
reservoir rocks belonging to the Heather formation.
The recent major discoveries in the Flemish Pass basin, offshore eastern Canada, have re-focussed industry attention on the Upper Jurassic
, particularly in South Porcupine, while along the basin margins the exciting potential in the Lower Cretaceous, prolific in West Africa, also remains undrilled.
Its pay zones are: Lower Cretaceous (Thamama I & II), Upper Jurassic
(Arab A-C & D carbonates) and Mid-Jurassic (Upper Araej, Uwainat & Lower Ara'ej limestones).
The Upper Jurassic
(Kimmeridgian) Lastres Formation contains many vertebrate tracksites with a large variety of taxa.
The well, 22/11b-13, will target an Upper Jurassic
Fulmar sand prospect.
The Arbuzovskoye well A-214 was spudded on 22 April 2016 and has been successfully completed with a horizontal segment of about 1,000 m in the Upper Jurassic
J1-1 and J1-2 intervals at a depth of approximately -2,457 to -2,467 m TVDSS.
Near the close of the Upper Jurassic
, shallow water cyclic sedimentation was re-established with the deposition of the carbonates and evaporites of the Arab and succeeding Hith Fms.
The diversity, abundance and good conditions of preservation in the quarry are not usual from the Portuguese Upper Jurassic
and are, somehow, in the line with the classical Guimarota coalmine, in Leiria (Martin and Krebs, 2000).
The West Franklin well has encountered a very good quality Upper Jurassic
reservoir and was tested with a rate of 985,000 standard cubic metres per day of gas and 314 standard cubic metres per day of condensates on a 26/64' choke.