1. GEOP 415 Part 1 Essentials of Seismic Interpretation Chapter 3 Stratigraphic Traps Others

2. Stratigraphic Associated with unconformityUnassociated with unconformity Supra- unconformity Sub- unconformity DepositionalDiagenetic Onlap Valley Channel Truncation Pinchout Channel Bar Reef Porosity and/or permeability transition Geophysical concepts Stratigraphic traps – Others

3. Selley (1985) Geophysical concepts Stratigraphic traps - Diagenetic

4. http://www.searchanddiscovery.net/documents/2003/grau/index.htm Geophysical concepts Stratigraphic traps - Diagenetic They are formed by diagenetic changes that enhance porosity and permeability within a tight formation, therefore forming a good reservoir. Recognized on seismic by changes in reflection character.

5. Selley (1985) Geophysical concepts Stratigraphic traps – Sand bars

6. Geophysical concepts Stratigraphic traps – Sand bars Sand bars are narrow linear features formed by wave action near shorelines. They are usually well-sorted with high porosity and permeability at deposition time. They are best recognized on time slices of 3-D seismic data by their linear character.

7. http://csegrecorder.com/articles/view/accurate-stratigraphic-prediction-from-seismic

10. Selley (1985) Geophysical concepts Stratigraphic traps - Pinchout

11. http://www.aussieoil.com/site/offshore.htm Geophysical concepts Stratigraphic traps - Pinchout They are formed by thinning up of a reservoir rock nestled between non- reservoir rocks. Recognized on seismic by: –Changes in reflection character (e.g., bright spot). –Their distinctive triangular shapes.

12. http://noreco.bouvet.no/en/Our-business/Exploration1/P1889-Niobe/