Presentation on theme: "1 October 2004 Cutting-Edge Software for Managing Gas Production and Storage Operations."— Presentation transcript:
1 October 2004 Cutting-Edge Software for Managing Gas Production and Storage Operations
2 1.Goal of forthcoming initial release targeted for 1 st Quarter, 2005: Accurate prediction of performance of gas storage reservoir/compressor/pipeline systems with a speed that allows hourly/daily scheduling of compressors for production and injection. Schedules obtained are efficient and economic. Given a complete database GasPal allows operations to be quickly rescheduled in response to new opportunities or unexpected changes in available equipment and/or supply/demand requirements. GasPal, focusing on operational planning, is a logical counterpart to Maraco’s GasTop software, which performs optimal investment planning for storage operations.
3 GasPal Characteristics GasPal: foundation is a PC-based gas reservoir simulator. GasPal: complex surface network may include splits, loops and multiple offtake points. GasPal: each of several reservoirs may have up to 5 producing layers GasPal: GRIDDER™ preprocessor inserts arbitrary number of computing cells into each reservoir. GasPal: simulates injection and production or a mixture of the two, providing full storage scheduling flexibility. GasPal: hourly, daily or monthly time steps accommodate short-, mid- and long-term planning needs. GasPal: optimizes service allocation and size of possible compressor configurations.
4 Operational Planning Scope Short-term operation: hourly time steps for two weeks. Useful for immediate injection/withdrawal planning. Mid-term planning: daily time step for one year. Useful for overall storage planning. Long-term production : monthly time step for 30 years. Useful for regular gas reservoir production or blowdown.
5 Surface Flow Capabilities: Splits, Loops & Offtake Points Produce against or inject with a given back pressure Produce or inject a requested rate profile Split flow at node Choke total flow or either flowline
6 Surface Line Capabilities: Multiple Reservoirs Choke each producing cell and/or reservoir to produce requested rate Each cell in each reservoir may have different characteristics
7 Surface Line Capabilities: Compressor Optimization Compressor locations and sizes optimized to maximize withdrawal, injection and inventory revenues Work is now underway on GasPal’s compressor scheduling capability
8 Reservoir: Arbitrary Number Of Simulation Cells Faults Computing mesh generated by GRIDDER