1. “Powerful yet Easy” “Quick and Clean”

2. Gas Network GasNet is an easy to use package to generate a sales gas forecast based on contract demand and supply from multiple wells and pools in a production network.

3. Gas Network, Sirius Petroleum Software 3 Gas Network Agenda Network and components Well data Pool data Gas analysis data Plant data Special Features, Methods and Correlations Output Reports and Graphs Major Differences Demo Question

4. Gas Network, Sirius Petroleum Software 4 Gas Network The Network consists of a series of nodes. Wells, separators, lineheaters, dehydrators, meter runs, field compressors, gas- processing plants and delivery stations. Nodes are connected with pipelines.

5. Gas Network, Sirius Petroleum Software 5 Network Diagram

6. Gas Network, Sirius Petroleum Software 6 Pipeline Data

7. Gas Network, Sirius Petroleum Software 7 Well Data Wells are defined within a pool, group, contract, and a lease. Well data includes: Elevations, Perforations. Start Conditions: Year, Cumulative Gas production. Abandonment: Year, Deliverability. Constraints: Max Drawdown, Max Rate. Fixed Conditions: Flow Rate.

8. Gas Network, Sirius Petroleum Software 8 Well Data

9. Gas Network, Sirius Petroleum Software 9 Well Working Interests

10. Gas Network, Sirius Petroleum Software 10 Well Elevations

11. Gas Network, Sirius Petroleum Software 11 Well Elevations

12. Gas Network, Sirius Petroleum Software 12 Pool Data Reservoir Data: Initial Gas in Place, Initial Pressure, Formation Temperature, and Datum Elevation. Start Conditions: Year, Cumulative Gas production. Abandonment: Pressure, Recovery, Deliverability, and Year. Fixed Conditions: Flow Rate.

13. Gas Network, Sirius Petroleum Software 13 Pool Data

14. Gas Network, Sirius Petroleum Software 14

15. Gas Network, Sirius Petroleum Software 15 Gas Analysis Data 12 Component gas analysis including N 2, CO 2 and H 2 S. C 7 + properties (Molecular Weight, Specific Gravity)

16. Gas Network, Sirius Petroleum Software 16 Gas Analysis

17. Gas Network, Sirius Petroleum Software 17 Gas Analysis

18. Gas Network, Sirius Petroleum Software 18 Plant Data Compression data: Max Power, Number of stages, Max compression ratio, Min suction. Processing data: Liquid recover, Sulphur recovery, Fuel and metering, Pressure loss. Abandonment conditions: Year, Deliverability.

19. Gas Network, Sirius Petroleum Software 19 Plant Compression

20. Gas Network, Sirius Petroleum Software 20 Compression

21. Gas Network, Sirius Petroleum Software 21 Plant Processing

22. Gas Network, Sirius Petroleum Software 22 Gas Network Special Features Well Deliverability –Simplified (Rawlings and Schellhardt(1936) –LIT-Pressure –LIT-Pressure Squared (Houpert, 1959) –LIT-Pseudo Pressure (Al-Hussainy, 1965) –Gas IPR (Aronofsky and Jenkins, 1954) Bottomhole Pressure –Average Density method. –Average Temperature and Average z-factor method. –Sukkar and Cornell method. –Cullender and Smith (1959)

23. Gas Network, Sirius Petroleum Software 23 Gas Network Special Features cont. True vertical depth –Segmented –Tangential –Average Angle –Radius of Curvature –Minimum Curvature Compressor Power –Sproule, 1982 –Katz et al, 1959

24. Gas Network, Sirius Petroleum Software 24 Gas Network Special Features cont. Pipeline pressure drop –Weymouth formula –Modified Panhandle ‘A’ –Modified Panhandle ‘B’ –Fanning equation –Numerical integration (Gregory and Aziz, 1978) Friction factors –Colebrook-White, 1939 –Jain, 1978 –Chen, 1979

25. Gas Network, Sirius Petroleum Software 25 Gas Network Special Features cont. Import and export –from and to other Sirius programs. –Export graphs and diagrams to MS Word, MS Paint using *.BMP or *.WMF files

26. Gas Network, Sirius Petroleum Software 26 Calculation Methods

27. Gas Network, Sirius Petroleum Software 27 Correlations

28. Gas Network, Sirius Petroleum Software 28 Output, Reports and Graphs Table of results for current time step Diagram of results Table of results by component –Deliverability, AOF, Production, Compression, Gas analysis, Heating Value Numerous reports –Well, pool, group, lease, company, etc. Numerous graphs

29. Gas Network, Sirius Petroleum Software 29 Diagram of Results

30. Gas Network, Sirius Petroleum Software 30 Table of Results

31. Gas Network, Sirius Petroleum Software 31 Reports

32. Gas Network, Sirius Petroleum Software 32 Major Differences Quick but not dirty. No hidden defaults. Full graphical and table input. Full data verification. Network created by linking nodes with pipelines. Gas processing at separators, and plant nodes. Gas analysis calculated at each node. A lot of different solution methods and correlations. User has full control over defaults. Extensive build in reports and graphs. (wells, groups, pools, leases, companies, and total) Easy report and presentation preparation.