Applying accommodation versus sediment supply ratio concepts to stratigraphic analysis and zonation of a fluvial reservoir - From Depositional Systems to Sedimentary Successions on the Norwegian Continental Margin - page 117

N S

Well 6 Well 7

ca 2 km

ca 3 km

Well 5

Zone 9

Well 4

ca 3.5 km

Well 3

ca 4 km

Well 1 ca 2 km

Well 2

ca 2 km

Nansen Fm.

Zones
6-8

Eiriksson Fm.

Zone 5

Zone 4

1

2

Raude Fm.

Zone 3

100 m

Zone 2

Zone 1

GR & NPHI/RHOB

GR & NPHI/RHOB

0

GR & NPHI/RHOB

GR & NPHI/RHOB

GR & NPHI/RHOB

GR & NPHI/RHOB

GR & NPHI/RHOB

Increasing
A/S values

Mudstone with vertisol-like palaeosol
Channel sandstone
Bioturbated silty sandstone

Crevasse sandstone Mudstone

Lacustrine deposit

Top Raude Formation
Top Eiriksson Formation

Overbank siltstone
A/S zone boundary

Decreasing
A/S values

Fig. 12. N-S correlation panel of cored wells of the Statfjord Group within the Statfjord Field. Horizontal A/S zone boundaries mark reservoir
subdivision (zone 1 to 9). A/S sequence symbols are equivalent to Fig. 5. 1 = Intermediate (intra Statfjord-) scale A/S cycle: upward more and
more amalgamated and laterally extensive channel belt deposits in the Raude Fm mark a decrease in A/S (although the long-term development
displays the opposite trend) and the minimum A/S is set equal to base Eiriksson Fm. 2 = Correlative A/S sequences on reservoir zone-scale (see
text).