Armada Development: Case History of Extended Reach Pre-Drilling From a Semi-Submersible in the Central North Sea

1997 ◽  
Author(s):  
B.G. Teggart ◽  
C.L. Dunne ◽  
R.D. Wilkinson
Keyword(s):  
North Sea ◽  
Case History ◽  
History Of ◽  
Central North Sea

A Case History of Casing Directional Drilling in the Norwegian Sector of the North Sea

2008 ◽  
Author(s):  
Kevin Arthur Bourassa ◽  
Tove Husby ◽  
Rick Deuane Watts ◽  
Dale Oveson ◽  
Tommy M. Warren ◽  
...  
Keyword(s):  
North Sea ◽  
Case History ◽  
Directional Drilling ◽  
The North ◽  
History Of ◽  
The North Sea

Case history of a six‐streamer seismic survey in the North Sea

1991 ◽  
Author(s):  
Gary Hampson ◽  
Terje Hansen ◽  
H. Jakubowicz ◽  
John V. Kingston
Keyword(s):  
North Sea ◽  
Case History ◽  
Seismic Survey ◽  
The North ◽  
History Of ◽  
The 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.

Case history of a six streamer seismic survey in the North Sea

1991 ◽  
Author(s):  
J. V. Kingston ◽  
G. Hampson ◽  
T. Hansen ◽  
H. Jakubowicz
Keyword(s):  
North Sea ◽  
Case History ◽  
Seismic Survey ◽  
The North ◽  
History Of ◽  
The North Sea

Exploration history of the high-pressure, high-temperature plays: UK Central North Sea

2005 ◽  
Vol 6 (1) ◽  
pp. 253-267 ◽  
Author(s):  
D. ERRATT ◽  
P. H. NICHOLSON ◽  
P. WINEFIELD ◽  
R. J. MILTON-WORSSELL ◽  
G. T. CAYLEY ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
North Sea ◽  
High Pressure High Temperature ◽  
History Of ◽  
Central North Sea
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