2. GasTank GasTank uses reservoir pressure and produced volumes of gas plus liquids from individual wells and determines the IGIP using volumetric, planimetric and material balance methods. Results are summarised by well, group, pool, lease and company.

3. GasTank, Sirius Petroleum Software3 GasTank Agenda Well data Pool data Lease data Gas analysis data Special Features, System Options, Methods and Correlations Output Reports and Graphs Demo Questions

4. GasTank, Sirius Petroleum Software4 Well Data Wells are defined with a pool, group and a lease. Basic Data: Well name, UWI, group and lease. Volumetric Data: Drainage area, netpay, porosity, water saturation. Material Balance Data: Pressure and production history.

5. GasTank, Sirius Petroleum Software5 Well Data

6. GasTank, Sirius Petroleum Software6 Volumetric Data

7. GasTank, Sirius Petroleum Software7 Material Balance Data

8. GasTank, Sirius Petroleum Software8 Analysis Options

9. GasTank, Sirius Petroleum Software9 Analysis Results

10. GasTank, Sirius Petroleum Software10 Analysis Results

11. GasTank, Sirius Petroleum Software11 Pool Data Basic Data: Pool name, Field name, and gas analysis name. Reservoir Data: Current pressure, formation temperature, and abandonment pressure, rock and water compressibility. Planimetric data: average porosity, average water saturation, contour value and contour areas.

12. GasTank, Sirius Petroleum Software12 Pool – General Data

13. GasTank, Sirius Petroleum Software13 Pool – Reservoir Data

14. GasTank, Sirius Petroleum Software14 Pool – Planimetric Data

15. GasTank, Sirius Petroleum Software15 Pool - Contour Data

16. GasTank, Sirius Petroleum Software16 Lease Data Basic Data: Lease name or number, number of wells in lease, working interest for each company.

17. GasTank, Sirius Petroleum Software17 Lease Data

18. GasTank, Sirius Petroleum Software18 Gas Analysis Data Full Gas Analysis: 12 Component gas analysis including N 2, CO 2 and H 2 S, C 7 + properties (Molecular Weight, Specific Gravity) Simple Gas Analysis: 3 non-HC including N 2, CO 2, and H 2 S, and a total gas specific gravity.

19. GasTank, Sirius Petroleum Software19 Gas Analysis

20. GasTank, Sirius Petroleum Software20 GasTank Special Features Data Selection –Fluid options: gas only, or total fluid (gas+liquid) –Data selection: all points, all selected points, or all selected by type. Analysis Methods –Tank type, P/z versus Cumulative production –Full Material Balance, Pressure method –Full Material Balance, IGIP method –Full Material Balance, Havlena & Odeh (1963-64) method Contour Area Methods –Gauss-Green method Bulk Volume Methods –Trapezoid, Pyramid, Combination, Simpson's

21. GasTank, Sirius Petroleum Software21 System Options

22. GasTank, Sirius Petroleum Software22 Correlations

23. GasTank, Sirius Petroleum Software23 Planimetric Methods

24. GasTank, Sirius Petroleum Software24 Output, Reports and Graphs Diagram of results Numerous reports –well, pool, group, lease, company, etc. Numerous graphs –well, pool, group, lease, company, etc.

25. GasTank, Sirius Petroleum Software25 Diagram

26. GasTank, Sirius Petroleum Software26 Reports

27. GasTank, Sirius Petroleum Software27 Graphs

28. GasTank, Sirius Petroleum Software28 P/z Analysis

29. GasTank, Sirius Petroleum Software29 Z-factor