1. Fault Seal Analysis
TERRASCIENCES

2. What is Fault Seal Analysis?
The study of the likelihood of a fault to allow fluids to move across the fault plane (leak) or not (seal).

3. Where should Fault Seal Analysis be applied?
Depositional environments with synsedimentary normal faulting - deltaic environments. E.g. Nigeria, Gulf Coast, North Sea.
Other areas where faulting through plastic/nonplastic lithology combinations may impact fluid movement.

4. Who needs faults seal analysis ?
Production Geologists.
Production Engineers.

5. Technical details ... Utilizes sand/shale identifier curve (eg. GR).
Can analyze single or multiple displacements.

6. Key Benefits
Provide insight into likelihood of fault seal or leak within the field under development.
Needs no seismic data.
Provides several different algorithms.
Smear Gouge Analysis
Clay Smear Potential
Smear Gouge Ratio
Shale Gouge Ratio
Smear Factor

7. Smear Gouge Analysis Allows entry of most likely reservoir thickness.
Uses a range of fault displacements.
Graphs displacement against Smear Gouge Ratio for Cross Seal Ru, Dip Seal Ru, Cross Seal Rd, and Dip Seal Rd.

8. Smear Gouge Analysis display.

9. Clay Smear Potential
Allows differentiation between hard and soft shales.
User specified fault throw.
User definable “leak/seal” threshold value.
Computes “smearing potential” curve.
Computes “leak/seal” indicator curve.

10. Clay Smear display

11. Additional benefits Can be added on to TerraStation II to allow:
Multiple well analysis.
Study of data in a regional context.
Mapping.
Complex sand/shale determination.

12. How to buy Fault Seal. Contact any TERRASCIENCES office.
Ask for “Sales”.
Tell them you want to buy or rent the Fault Seal Analysis module.

13. TERRASCIENCES Contacts:
TERRASCIENCES, Inc
5629 FM 1960 West,
Suite 312,
Houston,
TX 77069
Tel: (281)
TERRASCIENCES Ltd
Palace Chambers,
41 London Road,
Stroud, Glouc.,
UK GL5 2AJ
Tel: (01453)

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