ccs-m t4 training course
Post on 09-Feb-2022
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CCS-M T4 Training Course Data set for work shops Compiled by Rita Sande Rød and Fridtjof Riis Geological data from NPD Barents Sea Atlas (2013): http://www.npd.no/Global/Norsk/3-Publikasjoner/Rapporter/CO2-ATLAS-Barents-sea-2013.pdf Some gas volumes have been modified and are not real. The data set contains different classes of information which are typically used in the evaluation of CO2 storage.
1. Background and site selection
2. Evaluation of storage capacity
Overview map of study area with bathymetry and coastline, discoveries/fields (red- gas, green- oil), gas pipelines (orange) and environmentally restricted zone (gray). Numbers show recoverable gas reserves for each structure. Total recoverable gas reserves Snøhvit area (methane + CO2) 260 BSm3 Annual gas production (methane + CO2) 4.6 MSm3/y Annual need for CO2 injection 2.1 Mt/y Volumes are based on real data, but adjusted to a case where CO2 content is 20 % (for exercice purpose)
129
30 13
55 15
7
12
50 % CO2
Bathymetry
Location of seismic profiles and well cross section Red line: Major faults
20 km
Well cross section
Gamma Neu/Den Resistivity
100 m Reservoir and caprock formations
Simplified porosity/depth trends and porosity/permeability trends for reservoir rocks Formations and evaluated aquifers
Well tops:
Core photos of 7120/6-1 Stø, Nordmela and Tubåen Fm
All cores, indicating oil stain from a paleo oil zone
Core photos of 7120/6-1 Nordmela Fm
Nordmela Formation mainly tidal sandstone dominated
Core photos of 7120/6-1 Tubåen Fm
Tubåen Formation, mainly fluvial, sandstone dominated
BSS01-201 Seismic line SW-NE across the Hammerfest Basin
7122/6-1
WSW ENE
BSS01-106 Seismic line NW-SE across the Hammerfest Basin
7121/7-2 7120/6-1 projected N
S
Seal: thinning, gas leaks, faulting.
Communication towards the sea floor. North east part of Jurassic aquifer.
N S
Top Stø Fm depth map Top Stø Fm depth map (Top of main reservoir) Contour interval 100 m
1500
2000
2500 3000
1000
20 km
Total aquifer thickness (Stø, Nordmela, Tubåen Fm) Contour interval 30 m
20 km
Regional seismicity map with stress indicators
Epicenter location in the study area is poorly constrained due to poor coverage by seismometers
Geothermal gradients
Bathymetry map showing location of wells where temperature has been measured in drill stem tests of water or oil. Temperature gradients are calculated as the average from the sea floor to the depth of the test. High temperature gradients are expected to occur on salt structures, on some basement highs and in areas with glacial erosion. Low gradients are expected in areas with large accumulations of late glacial sediments.
Fracture gradient for pressure limited estimate
Pressure build-up in the evaluated aquifers is limited by the relevant fracture gradient.
180000 ppm
120000 ppm
Salinity regions in Jurassic formations, based on pore pressure data
20 km
Top Stø Fm depth map Contour interval 100 m
1500
2000
2500 3000
1000
C.I 100 m
20 km
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