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UK Continental Shelf – Mid North Sea High Free Subsurface Data
UK Continental Shelf – Mid North Sea HighFree Subsurface Data
UK Continental Shelf – Mid North Sea High
The subsurface data is made freely available to support evaluation of the frontier or underexplored UK part of the Greater ‘Mid North Sea High’ which will be offered in the upcoming 29th Offshore Licensing Round (2016). Data will be available as a ‘Workstation-Ready Product’, as well as in software independent formats. The OGA datasets are configured as a number of defined data packages.
Each data package is detailed overleaf and the smaller ones will be available for download via www.ukoilandgasdata.com while the bigger ones will be available for delivery on physical media as discrete, self-contained entities at a cost.
Survey summary
Type: 2D long Offset
Broadband: Yes
Broadband type: single streamer deghosting
Size: 10,849 Km (89 lines)
Acquisition Year: 2015
Completion of Processing: 2016
Record length: 8 seconds
Sample interval: 2ms
Vessels: WesternGeco Tasman and Regent
Acquisition Parameters
Streamer length: 8,000m
Streamer Type: Q Marine (solid)
Streamer: Slant 8-35m depth
Source volume: Bolt 5085 cu inches
Source pressure: 2000 psi
Source depth: Delta 3 source, 9-6-9m array
Source signature: Calibrated Marine source
Shot interval: 18.75m
Mid North Sea High 2015 OGA survey
Processing:
EDGF Noise Attenuation & Deghosting
Demultiple (GSMP) modelling (velans)
Demultiple DWD modelling and subtraction
Demultiple GSMP modelling
Demultiple GSMP model subtraction
2km Velocity Analysis
PSTM 500m Velan generation
2nd Pass Layer stripped GSMP & model Subtraction
DAR, Tau-P Decon & Statistical Debubble
Line Merging, tidal statics
Radon Demultiple 500msec cut after enhanced demultiple flow.
PRIMAL Demultiple
KPreSTM migration
Post Migration Radon
SCVA – Continuous RNMO – moveout correction
Post Migration CMP gather PRIMAL/FK
Final PSTM stacking
Deliverables
Field data: (SEG-D), Navigation (P1/11), Acquisition report, Observer’s Logs
Seismic Pre-stack: Raw De-Ghosted (SEG-Y), Navigation (P1/11), Acquisition report, Raw Pre-stack Time Migrated Gathers (SEG-Y)
Seismic Post-stack: Raw Full Offset Stack (SEG-Y), Raw Angle Stacks x4 (SEG-Y), Final Full Offset Stack (SEG-Y), Final Angle Stacks x4 (SEG-Y), Navigation (P1/11), Velocity (Mig/Stack, SEG-Y), Acquisition reports, Processing reports
Gravity and Magnetics:
2015 newly acquired data: 11,788 Km gravity data; 11,520 Km magnetic data; gridded surfaces and interpreted maps
BGS legacy Gravity and Magnetic data
Added Value Products:
Seismic inversion (SEG-Y), Navigation (P1/11) for 1 composite line
Interpretation of 4 shallow horizons
PSDM processing of 1 line
Workstation Ready Package in Petrel 2014.1 format
Total reprocessed legacy data: 33 lines, 1947 Km
Northumberland Trough 2D: NT-4, -5, -8
Dogger Bank 2D: 82SS-509, -509A, B and C, -511, -519, -617, -617 A, B and C
East Coast Detail 1985 2D: ECD85-45
North Sea Deep Reflection: NSDP85-5/7
Mid North Sea High, Phase 1-2D: MNS-A, MNS-M#1
Northumbria Offshore 2D: NO-04, -10, -24, -38A
North West Gas fields 1991: GF91-35, -42, -46, -48
Quadrants 41, 42 and 47: K84-10#2, -77, -79-2, -85
Aberdeen Basin 2D: AB-1, -21, -21A, -22
Other post stack legacy data: 137 lines, 7650 km
Deliverables
Post Stack (SEG-Y). The rights to the raw and pre- stack data remain the property of WesternGeco.
Well locations and header attributes
Joined Digital Well Logs (73), Composite Logs (91 wells) and Formation tops
Well paths, VSP / Checkshots, Well reports and Log images as available and released
Legacy data Wells Data
For further information, please contact us at:[email protected]
© Crown copyright, 2016. This data is licensed under the Open Government Licence v3.0. You may use and re-use this data (not including logos) free of charge in any format or medium. You should include the following attribution statement when using this data:
© Crown Copyright. Contains public sector information licensed under the Open Government Licence v3.0.
