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Agenda

Nominations and Scheduling Update CIG High Pressure Scheduling Changes John Driscoll Manager, Nominations and Scheduling. Agenda. Overview from Operations Meeting Why is a change needed? What is changing? What will this impact? Planned implementation Q & A.

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Agenda

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  1. Nominations and Scheduling UpdateCIG High Pressure Scheduling ChangesJohn DriscollManager, Nominations and Scheduling

  2. Agenda • Overview from Operations Meeting • Why is a change needed? • What is changing? • What will this impact? • Planned implementation • Q & A

  3. From the April 2012 Operations MeetingScheduling High Pressure Gas on CIG • Evaluating a Flow Model Update • Better match High Pressure Gas scheduling to operational capability • Ensure all Firm commitments can be met • Maximize High Pressure Capabilities • Plan full rollout to Customers • Planning/coordination – late summer • Estimated Implementation 4th Quarter 2012

  4. Why is a change needed? • Need to reorient locations to better represent physical layout of the pipeline • Recent maintenance revealed challenges for high pressure dispatch • When the system is full, two locations in particular impact our ability to properly schedule Firm commitments • Dover (WIC – CIG) • Crazy Horse (REX – CIG) • Maximize the use of high pressure assets • Accurately determine high pressure availability • Schedule based on tariff priorities • Prevent over-scheduling of operational capacity

  5. What is changing ? • Restricted Deliveries at Dover • Unchanged Dover Characteristics • Receipt capacity is unchanged (308.4 MMcf/d) • Deliveries to WIC are by displacement only • CIG offload gas is dedicated to support high pressure requirements at Dover • Offload capacity is 171 MMcf/d (CIG contract on WIC) • Capacity is included in HPC operating capacity (426 MMcf/d) • Displacement deliveries decreasing high pressure availability are not supported • Deliveries to WIC • Limited to scheduled non-offload Dover receipts • CIG deliveries bouncing to transport on CIG are supported • WIC deliveries bouncing to transport on WIC are supported

  6. What is changing ? (cont.) • Reorient Crazy Horse to high pressure (Segment 940) • Low pressure supplies to CZH or High Plains deliveries will flow through the High Pressure Constraint (HPC) • Receipts from CZH • To low pressure locations will flow on High Pressure facilities (Segment 352) and through NHC (Segment 354) at Watkins • To PON and TOM will flow through NHC and HPC to track physical flow path • To high pressure locations (Segments 352 and 353) will stay on high pressure facilities • To High Plains locations no change

  7. Contract Paths Impact • Contract Routes • HPC on Segment 350 to control all low-to-high pressure (replace CHC) • Physical deliveries to WIC must use BOW • Low pressure receipts to high pressure facilities must use HPC • New Bowie South Constraint (BSC) to manage HPC and Bowie receipts for High Pressure deliveries • New Jumper Facility Constraint (JFC) to manage deliveries to Ponderosa, and Tomahawk • Crazy Horse receipts on high pressure facilities • Seamless deliveries to off-system locations • CIG to WIC (at Bowie) • Modified W21 constraint (Hudson North) controls system deliveries (including North Raton Lateral receipts) • Low pressure receipts will use HPC to reach high pressure facilities

  8. Qualified HEEN Compressor Paths • Dover Receipts to • High pressure points – HPC, W12 • Low pressure points – No change • Bowie Receipts to • High pressure points – BSC, W21 • Low pressure points – BSC, W21 • Wyoming mainline receipts to • High pressure points – CYC, HPC • Low pressure points – No Change

  9. What is not changing? • Colorado Interstate Gas Company • High Pressure Constraint (HPC) • Capacity is 426 MMcf/d • Large Jumper (170 MMcf/d) • Small Jumper (85 MMcf/d) • CIG Off-load on WIC (171 MMcf/d) • HUB locations • Fuel • Mainline and HUB-1 Fuel • High Pressure Delivery Fuel (system fuel rate) • High Plains • Nominations for CIG’s west-to-east WIC capacity on WIC

  10. What is not changing? • Wyoming Interstate Gas Company – Minimal Changes • Existing location positions, flow paths, fuel requirements and capacities are unchanged • Cheyenne-area interconnects with CIG • Dover • Physical deliveries to CIG (low pressure) • Displacement deliveries to WIC are limited to non-offload scheduled receipts • Bowie • Bidirectional facility • Primary interconnect for CIG seamless capacity • Flying Hawk • WIC deliveries to CIG High Plains system • Displacement receipts from CIG High Plains system

  11. Implementation Implementation for November 1, 2012 • November 1 nominations by October 29 • Rest of October is unchanged

  12. Appendix • High Pressure Constraint Capacities • Constraint Firm Commitments November 1, 2012 (as of August 11, 2012)

  13. Questions??

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