Sheridan C. Swords
Executive Vice President, Commercial Liquids and Natural Gas Gathering and Processing at ONEOK
Thank you, Walt.
Beginning with the Natural Gas Liquid segment. Rocky Mountain volumes increased 7% year-over-year, driven by higher propane plus volume from solid production in the region, partially offset by less ethane recovery year-over-year. The Mid-Continent region also saw lower levels of ethane recovery during the third quarter as natural gas and ethane prices presented fewer economic opportunities for recovery.
Permian Basin NGL volume benefited from increased short-term volume on our system in the third quarter of 2024. We expect short-term volume to be replaced with long-term committed volume as we near the completion of our West Texas NGL pipeline expansion. In the Permian Basin, the completion of two third-party processing plants, that we had expected to contribute to third quarter volumes, were delayed. We expect these plants to be completed and flowing volume in the fourth quarter. We expect a step-up in Permian Basin NGL volumes in 2025 from the ramp-up of these two new plants, additional plants coming online, new contracts and new volume from EnLink plants ramping-up [Technical Issues] system.
The West Texas NGL pipeline expansion and MB-6 Fractionator are on-track to be in-service by the end of this year. On the West Texas NGL expansion, the full pipeline looping providing capacity of 500,000 barrels per day is expected by year end, with remaining pump stations to be completed in mid-2025. The Elk Creek pipeline expansion remains on-track for our first-quarter 2025 completion and Phase 1 of our Medford Fractionator rebuild is expected to be completed in the fourth quarter of 2026, adding 100,000 barrels per day of capacity. With Phase 2 expected in the first quarter of 2027, adding the final 110,000 barrels per day for a total capacity of 210,000 barrels per day.
This was our first quarter since acquiring the Easton Energy NGL assets, and we are happy with how these pipelines are performing and integrating into our Gulf Coast and Houston area systems. The system's existing capacity from Mont Belvieu to the Houston Ship Channel is performing at a higher utilization rate, with throughput increasing by nearly 30% since acquiring the assets. We continue to expect to complete connections from the legacy Easton system to our Houston-based assets beginning in mid-2025 through year-end 2025, which will help us realize additional synergies by maximizing the available capacity.
Moving on to the Refined Products and Crude segment. Gasoline and jet fuel demand benefited from a robust peak driving season and refinery maintenance across our system drove long-haul volumes during the third quarter. Total Refined Products volumes at nearly 1.6 million barrels per day was a new record for the system. In July, all of our tariff adjustments went into effect, providing a mid-single-digit tariff increase across our Refined Products system. With the start of blending season in September, we didn't see much of an impact in the third quarter, but have seen an increase in blending activity since then. ONEOK continues to benefit from the ability to execute certain blending related commercial synergies between the Natural Gas Liquids and Refined Products businesses. We expect these types of synergies to continue to ramp-up as low capital synergy projects come online in the coming quarters.
As it relates to growth projects, we continue to expect the expansion of our Refined Products pipeline system from Kansas to the Greater Denver area and Denver International Airport to complete -- to be completed in mid-2026. In July, we provided a record volume of jet fuel to the Denver Airport, further highlighting the need for additional capacity to this key market. Crude oil volume shipped on our wholly-owned assets increased 10% year-over-year due to committed shipper [Phonetic] volume ramps on Longhorn and increased volume from third-party connections to the Houston distribution system. Our current volumes are good -- are a good base going forward.
We remain excited about the pending Medallion acquisition and what that will mean for our long-haul crude pipelines. Minimum -- minimal volume from Medallion gathering is flowing on Longhorn today and a modest amount of BridgeTex volume originates from these assets. So, we believe there is a great deal of upside and synergy opportunity in bringing our systems together. Over time, we expect an opportunity to direct more Medallion barrels through our long-haul pipelines as existing capacity on these Medallion assets fill-up.
Moving on to the Natural Gas Gathering and Processing segment. Rocky Mountain region processing volumes hit another record in the third quarter, averaging nearly 1.7 Bcf per day. Volumes would have likely been higher, but we experienced planned and unplanned outages late in the quarter. These carried over into early fourth quarter, but are now back online. Part of the unplanned outages resulted from North Dakota wildfires in early October, that caused volume disruptions for about one week due to producer shut-ins, power outages and high winds that also delayed completion crews. Our employees were quick to respond to these events and volumes have returned to levels seen before the fires.
There are currently 40 rigs in the Williston Basin, with 21 on our dedicated acreage. We continue to see benefits from the drilling of longer laterals and higher well performance on traditional laterals. We've updated our 2024 well connect expectations to a range of 500 to 530 well connects to reflect the higher volumes we're getting from fewer wells. Increasing gas-to-oil ratios in the basins continue to contribute to natural gas and NGL production strength. GORs in the basin are near all-time highs, and combined with longer laterals, support volume growth without requiring increase in drilling activity.
We're currently seeing 42 rigs in Oklahoma, with seven operating on our acreage and four on EnLink's acreage. We have seen additional wells drilled in oilier NGL-rich areas, even as some wells in gassier areas of the region have been delayed into 2025. We continue to expect approximately 65 well connects on ONEOK's acreage and expect approximately 90 well connects on EnLink's acreage in the Mid-Continent region this year.
In the Natural Gas Pipelines segment, we benefited from higher firm and interruptible transportation rates in the third quarter. Strong performance so far this year, driven by firm demand contracts and a continued high-demand for natural gas storage, has positioned the segment well to exceed expectations for 2024. We continue to address increased natural gas storage needs of our customers, recently activating 3 Bcf of previously idled storage capacity in Texas, and we remain on-track to complete our Oklahoma storage expansion project in the second quarter 2025. Both projects have firm contracts extending beyond 2030. Additionally, we now have access to significant natural gas storage through the EnLink system and we'll look for opportunities to best utilize our assets together in the future.
Pierce, that concludes my remarks.