Spatiotemporal relationships of deep-marine, axial, and transverse depositional systems from the synrift Upper Jurassic of the central North Sea

AAPG Bulletin ◽  
2016 ◽  
Vol 100 (09) ◽  
pp. 1469-1500 ◽  
Author(s):  
Adam D. McArthur ◽  
Adrian J. Hartley ◽  
Stuart G. Archer ◽  
David W. Jolley ◽  
Hugo M. Lawrence
Keyword(s):  
North Sea ◽  
Upper Jurassic ◽  
Depositional Systems ◽  
Central North Sea ◽  
Spatiotemporal Relationships

Disseminated ‘jigsaw piece’ dolomite in Upper Jurassic shelf sandstones, Central North Sea: an example of cement growth during bioturbation?

Sedimentology ◽  
2000 ◽  
Vol 47 (3) ◽  
pp. 631-644 ◽  
Author(s):  
James P. Hendry ◽  
Mark Wilkinson ◽  
Anthony E. Fallick ◽  
Nigel H. Trewin
Keyword(s):  
North Sea ◽  
Upper Jurassic ◽  
Central North Sea

Sedimentological evolution of Sele Formation deep-marine depositional systems of the Central North Sea

2015 ◽  
Vol 403 (1) ◽  
pp. 63-98 ◽  
Author(s):  
James Eldrett ◽  
Efthymios Tripsanas ◽  
Christopher Davis ◽  
Tom McKie ◽  
Manuel Vieira ◽  
...  
Keyword(s):  
North Sea ◽  
Depositional Systems ◽  
Central North Sea

Diagenesis of the shallow marine Fulmar Formation in the Central North Sea

Clay Minerals ◽  
1986 ◽  
Vol 21 (4) ◽  
pp. 537-564 ◽  
Author(s):  
D. J. Stewart
Keyword(s):  
Clay Mineral ◽  
North Sea ◽  
Large Scale ◽  
Shear Zones ◽  
Upper Jurassic ◽  
Burial Diagenesis ◽  
Secondary Porosity ◽  
Shallow Marine ◽  
History Of ◽  
Central North Sea

AbstractThe diagenetic history of the Upper Jurassic Fulmar Formation of the Central North Sea is described with emphasis on the Fulmar Field. The Fulmar Formation was deposited on a variably subsiding shallow-marine shelf under the influence of halokinetic and fault movements. The sediments are extensively bio-destratified although large-scale cross-bedding is locally preserved. The dominant mechanism of deposition is thought to have been storm-generated currents. Soft-sediment deformation structures are common and are attributed to syn- and post-depositional dewatering of the sandstones. The dewatering was associated with fractures and shear zones which reflect tectonic instability resulting from periodic salt withdrawal and/or graben fault movements. The dewatering may have been initiated by repacking of the sediments during earth movements or by the gradual build-up and sudden release of overpressures due to compaction and/or clay mineral dehydration during rapid burial at the end of the Cretaceous. The formation is composed of arkosic sandstone of similar composition to Triassic sandstones from which it was probably derived. The sandstones also contain limited amounts of marine biogenic debris including sponge solenasters, bivalve shells, rare ammonites and belemnites. Initial diagenesis began with an environment-related phase during which quartz and feldspar overgrowths and chalcedony and calcite cements were precipitated. These cements appear to form concretions adjacent to local concentrations of sponge debris and shell debris, respectively, and were disturbed after their formation by fracturing and dewatering. This was followed by an early burial stage of diagenesis which resulted in extensive dolomite cementation and minor clay mineral authigenesis (illite and chlorite). The last phase of mineral growth was probably pyrite. During early burial diagenesis, secondary porosity after feldspar and/or carbonate was produced, although the exact timing is not clear. The lack of both stylolitic developments and extensive illitization indicates that the late burial diagenesis stage was never reached, although sufficient clay diagenesis occurred to destroy all traces of mixed-layer illite-smectite (present in some shallower wells). The main control on reservoir behaviour is primary depositional fabric. Diagenesis only overprints these controls. Locally-cemented fracture sets act as baffles to fluid flow, but they are not extensive and the reservoir acts as one unit.

The Mjølner Field, a deep Upper Jurassic oil field in the central North Sea

First Break ◽  
1991 ◽  
Vol 9 (1242) ◽  
Author(s):  
B. Söderström ◽  
A. Forsberg ◽  
E. Holtar ◽  
B.A. Rasmussen
Keyword(s):  
North Sea ◽  
Upper Jurassic ◽  
Oil Field ◽  
Central North Sea

scholarly journals Correlation of Hydrocarbon Reservoir Sandstones Using Heavy Mineral Provenance Signatures: Examples from the North Sea and Adjacent Areas

Minerals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 564 ◽  
Author(s):  
Andrew Morton ◽  
Paula McGill
Keyword(s):  
North Sea ◽  
Upper Jurassic ◽  
Heavy Mineral ◽  
Hydrocarbon Reservoir ◽  
The North ◽  
The North Sea ◽  
Reservoir Sandstones ◽  
Northern North Sea ◽  
Heavy Mineral Analysis ◽  
Central North Sea

Correlation of hydrocarbon reservoir sandstones is one of the most important economic applications for heavy mineral analysis. In this paper, we review the fundamental principles required for establishing correlation frameworks using heavy mineral data, and illustrate the applications of a wide variety of heavy mineral techniques using a number of case studies from hydrocarbon reservoirs in the North Sea and adjacent areas. The examples cover Triassic red-bed successions in the central North Sea and west of Shetland, which have been subdivided and correlated using provenance-sensitive ratio data and mineral morphologies; Middle Jurassic paralic sandstones in the northern North Sea, correlated using garnet geochemistry; Upper Jurassic deep water sandstones in the northern North Sea, discriminated using rutile geochemistry and detrital zircon age data; and the “real-time” application of the technique at well site in Devonian-Carboniferous fluvio-lacustrine sandstones of the Clair Field, west of Shetland.

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