Williston Basin: a tectonically stable CO2 Sink

1
Williston Basin a tectonically stable CO2 Sink?
2
(No Transcript)
3
(No Transcript)
4
Williston BasinA potential sink for CO2
sequestration

• CO2 in EOR
• Stratigraphically isolated reservoirs
• Proven traps
• Numerous fields suitable for EOR
• Weyburn project

5
Mission Canyon Sequestration Unit

• Complex stratigraphy with numerous porous
  intervals
• Trap potentially well defined with evaporites
  present vertically and laterally

6
Stratigraphic Column
7
(No Transcript)
8
(No Transcript)
9
Basement Terrain
10
Basement Magnetic Profiledata from USGS
11
Tectonic Model for Basin
12
Basin Development
13
Basement Magnetic Profile
14
Linears and Structural Development
15
Linears and Structural Development
16
Linears Control DepositionBioclastic material
in Madison Group
17
Regional Sequestration UnitsWhat is the
Potential for Leakage?

• Penetrations into/through unit
• need to access water well/ oil and gas well/
  waste injection data
• access integrity of borehole/plugging
• develop testing/monitoring techniques

18
(No Transcript)
19
Nesson Anticline
Cedar Creek Anticline
20
(No Transcript)
21
(No Transcript)
22
(No Transcript)
23
Evidence for Open Linears
from 1994 NorthRock Resources Promotional Map
24
Comments

• There are certainly local, sealed traps that are
  good candidates for sequestration in the
  Williston Basin.
• There is evidence that some linear structures
  within the Williston Basin may be active or at
  least open.
• Additional and detailed work is necessary to
  determine the competency of potential regional
  reservoirs/sinks for sequestration.