Template of Cretaceous lithostratigraphy in the North Sea. Preliminary status in 2007. An example of procedure process. Mike Charnock & Stephen Crittenden
11. Date: 2007-01-22 • Page: 11 •
4. Figures template: Log scales (proposal)
Dalland et al 1988
- Variable GR 0- 100,
- 50 –150, 30-250 API
- Variable DT 160-60,
150- 50, 140.40 micro sec/ft
Vollset & Dore:
- GR 0-100 API ; DT 140-40
PROPOSAL:
GR 0-150 API
DT 140-40 m secs/ft
DENSITY: 1.95 – 2.95 g/cm3
NEUTRON POROSITY:
0.54 –0.06 %
12. Date: 2007-01-22 • Page: 12 •
4. Figures template: Digital sections (proposal)
StrataBugs digital figures
Additional interpreted age
(following Gradstein et al.,
2004) & selective
biostratigraphic events
(various sources)
Clear indications of changes
in status
13. Date: 2007-01-22 • Page: 13 •
5. Deliverables
Cretaceous biostratigraphic
zonation
Figures for all existing
Cretaceous type & reference wells
with biostratigraphy
Figures for all proposed new
Cretaceous type & reference wells
with biostratigraphy
Egga figures type & ref. wells.
14. Date: 2007-01-22 • Page: 14 •
5. Deliverables
Well distribution list of formations/members (mMD RKB)
tops/bases/thickness (for mapping : ØH)
16. Date: 2007-01-22 • Page: 16 •
Mid Norway lithostratigraphic units (established)
HOW IS MID NORWAY DEFINED?
We propose following Dalland et al (1988) and exclude Møre Margin.
17. Date: 2007-01-22 • Page: 17 •
6. Mid Norway lithostratigraphic units
(established)
X
18. Date: 2007-01-22 • Page: 18 •
Statoil 6506/12-1:
type well : Lyr Formation