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Maintenance Construction Schedule - MountainWest Pipeline
2025 Schedule
| Period | Category | Preliminary Dates | Duration | Location | Project | Possible Customer Impact | Current Capacity (Dth/d) | Restricted Capacity (Dth/d) | Anticipated Firm Cut Quantity | Anticipated Total Nomination Cut % |
|---|---|---|---|---|---|---|---|---|---|---|
| April | Reservoir Testing | April 1 - 10 | 9 Days | Clay Basin | Annual Withdrawal Test | No physical injections allowed starting GD March 29 through GD March 31.
•GD April 1, constant 250 MMcf/day WD rate. •GD April 2, constant 275 MMcf/day WD rate. •GD April 3 through GD April 9, reservoir shut-in |
Varies, see latest EBB posting | April 1 258,000 Dth/d, April 2 284,000 Dth/d, April 3-9 to 0. | All | 100% |
| April | Compressor Maintenance | April 1 - 3 | 3 Days | Simon Compressor Station | Annual Emergency Shutdown (ESD) and Unit Maintenance | Capacity reduction on ML22 to Nightingale Segment of 27,650 Dth/d. Increased ML22 pressures for Vermillion Plant MAP 293, Skull Creek Delivery MAP 167, Skull Creek Receipt MAP 967 Cycle 1 GD 4/1 through Cycle 4 GD 4/3. Nominations return to normal beginning Cycle 5 GD 4/3. | Nightingale ML22 Segment 206,650 Dth/d | Nightingale ML 22 179,000 Dth/d | 0 Dth | 13% |
| April | Compressor Maintenance | April 15 - 17 | 3 Days | Oak Spring Compressor Station | Annual Emergency Shutdown (ESD) and Unit Maintenance | Capacity reduction of 120,000 Dth/d ML 104 Goshen Segment Beginning Cycle 1 GD 4/15 through Cycle 5 GD 4/17. Nominations return to normal beginning Cycle 1 GD 4/18. | ML 104 Goshen 384,500 Dth/d | ML 104 Goshen 264,500 Dth/d | TBD | 31% |
| May - July | Compressor Maintenance | May 7 - July 25 | 79 Days | Leroy Compressor Station | Engine Exchange | Capacity Reduction on MAP 89 Aquifer Injection of 30,000 Dth/d beginning Cycle 1 GD May 7 through Cycle 3 GD July 25. Nominations return to normal beginning Cycle 4 GD July 25. | Aquifer Storage INJ MAP 898 61,200 Dth/d | Aquifer Storage INJ MAP 898 31,200 Dth/d | 30,000 Dth | 49% |
| May | Compressor Maintenance | May 14 | 1 Day | Kanda Compressor Station | Annual Emergency Shutdown (ESD) and Unit Maintenance | Kanda/Col CIG DEL MAP 171, Kanda/Col CIG REC MAP 871 no flow beginning Cycle 1 GD 5/14 through Cycle 4 GD 5/14. Nominations return to normal beginning Cycle 5 GD 5/14. | Kanda/Col CIG DEL MAP 171 178,000 Dth/d. Kanda/Col CIG REC MAP 871 138,000 Dth/d | Kanda/Col CIG DEL MAP 171 and Kanda/Col CIG REC MAP 871 to 0 | All | 100% |
| May | Compressor Maintenance | May 20 - 23 | 4 Days | Thistle Creek Compressor Station | Engine Exchange | Capacity reduction of 82,500 Dth/d ML 104 Goshen Segment beginning Cycle 1 GD 5/20 through Cycle 5 GD 5/23. Nominations return to normal Cycle 1 GD 5/24 | ML 104 Goshen 384,500 Dth/d | ML 104 Goshen 302,000 Dth/d | TBD | 21% |
| July | Compressor Maintenance | July 8 - 11 | 4 Days | Simon Compressor Station | Engine Exchange | Capacity reduction on ML22 to Nightingale Segment of 27,650 Dth/d. Increased ML22 pressures for Vermillion Plant MAP 293, Skull Creek Delivery MAP 167, Skull Creek Receipt MAP 967 Cycle 1 GD 7/8 through Cycle 5 GD 7/11. Nominations return to normal beginning Cycle 1 GD 7/12. | Nightingale ML22 Segment 206,650 Dth/d | Nightingale ML 22 179,000 Dth/d | TBD | 13% |
| October | Reservoir Test | October 1 - 10 | 9 Days | Clay Basin | Annual Injection Test | No physical withdraws allowed from GD September 27 through GD September 29.
•GD September 30, constant 225 MMcf/day INJ rate. •GD October 1, constant 250 MMcf/day INJ rate. •GD October 2 through GD October 8, reservoir shut-in |
Varies, see latest EBB posting | September 30 Dth TBD, October 1 Dth TBD, October 2-9 to 0. | All | 100% |
Note: This schedule is subject to change. It is recommended the Shippers monitor MountainWest Pipeline's critical notices about schedule revisions.