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Balder Formation

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Journal Article
Published: 07 February 2019
Petroleum Geoscience (2019) petgeo2018-060.
... the Rosebank Field, where a plethora of drilling issues, of enigmatic origin, are common within a key stratigraphic marker known as the Balder Formation. Drilling fluid loss, bit balling, wellbore breakouts and wellbore ‘ballooning’, where lost drilling fluid returns to the wellbore, are all recognized within...
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Journal Article
Published: 01 December 2002
Journal of the Geological Society (2002) 159 (6): 627-630.
... of the Balder Formation follows a regional unconformity surface, which records erosion of a major branching drainage network into the underlying Palaeocene section, following a major base level fall. The topography of this surface was subsequently in-filled following marine transgression, and deep-water...
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<b>Balder</b> Field base <b>Balder</b> <b>Formation</b> depth structure map, illustrating the ir...
Published: 01 December 2002
Fig. 9. Balder Field base Balder Formation depth structure map, illustrating the irregular orientation and size of the Paleocene mounds with steep faulted flanks. Low areas shown in green have an irregular fill of Balder Formation sands, shale and tuff.
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Typical well-log character of the <b>Balder</b> <b>Formation</b> in the FSB, from well 61...
Published: 07 February 2019
Fig. 4. Typical well-log character of the Balder Formation in the FSB, from well 6104/25-1, manifested in a low, serrated gamma profile ( a ), resistivity slightly higher than shale ( b ), a density/neutron separation typical of shale ( c ) and a bell-shaped interval transit-time profile ( d ).
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Regional fracture pressure gradient for the <b>Balder</b> <b>Formation</b> around the Cor...
Published: 07 February 2019
Fig. 7. Regional fracture pressure gradient for the Balder Formation around the Corona Ridge. The LOT data are from the Balder Formation wells in the FSB and North Sea. TVDBML, true vertical depth below mud line.
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Drilling properties through the <b>Balder</b> <b>Formation</b> in well 213&#x2F;26-1z. A notab...
Published: 07 February 2019
Fig. 8. Drilling properties through the Balder Formation in well 213/26-1z. A notable reduction in the rate of penetration is observed ( a ), despite the fact that the weight on the bit ( b ) is increased. The increase in standpipe pressure ( c ) in therefore indicative of bit balling. Drilling
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Faroe–Shetland Channel area ( a ) Top <b>Balder</b> <b>Formation</b> Depth map (coloured)...
Published: 01 December 2002
Fig. 1.  Faroe–Shetland Channel area ( a ) Top Balder Formation Depth map (coloured), with bathymetric contours (dashed black lines), extent of Upper Balder (dashed pink line) and wells discussed in text (circles). ( b ) Balder Formation Isochore map (coloured) showing position of the basin
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NW–SE seismic line showing the seismic character of the <b>Balder</b> <b>Formation</b>, i...
Published: 01 December 2002
Fig. 2.  NW–SE seismic line showing the seismic character of the Balder Formation, its bounding surfaces and other major seismic reflectors (location shown in Fig. 1 ). LOEMU, Latest Oligocene–Earliest Miocene unconformity.
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Summary of a section of the stratigraphy around the <b>Balder</b> <b>Formation</b> in the...
Published: 01 December 2002
Fig. 3.  Summary of a section of the stratigraphy around the Balder Formation in the Faroe–Shetland Basin (modified after Ebdon et al. 1995 ; Knox et al. 1997 ), with water depths from seismic data (rectangles show error bars). Absolute ages from the two models of Jolley et al. (2002) .
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3D view of a section of the <b>Balder</b> <b>Formation</b> (location shown in  Fig. 1 ). ...
Published: 01 December 2002
Fig. 4.  3D view of a section of the Balder Formation (location shown in Fig. 1 ). Red (thin) to blue (thick) colours show Balder Formation isochore: range is from 20 to 350 m. A valley network in the Base Balder surface drained north into the basin.
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Results of the velocity analysis for the top of the <b>Balder</b> <b>formation</b>: (a)  ...
in > Geophysics
Published: 01 January 2002
F IG . 5. Results of the velocity analysis for the top of the Balder formation: (a) t P 0 ( x CMP ), (b) V nmo, P ( x CMP ), (c) t S 0 ( x CMP ), and (d) V nmo, S ( x CMP ). The error bars correspond to the 95% confidence intervals.
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Results of velocity analysis for the top of <b>Balder</b> <b>formation</b>: (a)  t   p 0 ...
Published: 01 January 2002
Figure 4. Results of velocity analysis for the top of Balder formation: (a) t p 0 , (b) V nmo, P , (c) t S 0 , (d) V nmo, S . Error bars correspond to 95% confidence intervals.
Journal Article
Published: 01 December 2002
Petroleum Geoscience (2002) 8 (4): 349-363.
...Fig. 9. Balder Field base Balder Formation depth structure map, illustrating the irregular orientation and size of the Paleocene mounds with steep faulted flanks. Low areas shown in green have an irregular fill of Balder Formation sands, shale and tuff. ...
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Series: AAPG Memoir
Published: 01 January 2007
DOI: 10.1306/1209853M873259
EISBN: 9781629810072
... are primarily composed of Hermod formation sand. The remaining two accumulations, mound 4 and Eocene 2, are contained in early Eocene Balder Formation sand. The early Eocene sands also exhibit some mounded character, but are primarily stratigraphic traps lying in the low areas between the Paleocene mounds...
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Journal Article
Journal: Clay Minerals
Published: 01 December 2012
Clay Minerals (2012) 47 (4): 513-538.
...A. Baldermann; A. Baldermann; A. Baldermann; G. H. Grathoff; C. Nickel Abstract Although numerous models for the formation of glauconite have been presented, the precise process and micro-environment of glauconitization are still poorly constrained. We characterize the special micromilieu...
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Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP403.8
EISBN: 9781862396791
..., Andrew, Glamis Tuff and Balmoral sandstone members are expressed as a stacked set of lowstand basin floor fans separated by mudstone intervals representing four cycles of third-order relative sea-level change. The Sele and Balder formations contain both basinal and shelfal packages as an expression...
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Journal Article
Published: 01 February 2019
Petroleum Geoscience (2019) petgeo2018-066.
... artefacts within the backstripping results. Palaeobathymetric restorations at the top and base of the Paleocene take into account regional transient dynamic uplift, probably related to the Iceland Plume. 350 m of uplift is incorporated at the Base Tertiary (65 Ma) and 300 m at the Top Balder Formation (54...
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Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP403.4
EISBN: 9781862396791
... of the Sele and Balder formations and Hordaland Group to create an ‘intrusive trap’. The Volund Field consists of a deeper central unit of stacked sandstone sills, surrounded by shallower, steeper-dipping injected sandstone dykes, which make excellent reservoirs with consistently high porosity...
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Journal Article
Published: 01 May 2008
Petroleum Geoscience (2008) 14 (2): 127-138.
... mudstones with up to 55% smectite probably represent a northern equivalent of the Balder Formation (North Sea). The underlying Late Cretaceous sequence probably had less primary smectite derived from volcanic ash, as indicated by the lower iron content. The distribution of smectite is also limited by its...
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Series: Geological Society, London, Memoirs
Published: 01 January 2004
DOI: 10.1144/GSL.MEM.2004.029.01.25
EISBN: 9781862394049
... in the lower Paleogene of the South Viking Graben of the UK and Norwegian North Sea. Seismic scale sandstone intrusions can be grouped in two classes. Class 1 comprises low-angle (20-40 degrees) tabular sandstone intrusions emanating from steep-sided in situ sand bodies within the Balder Formation...
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