Natural Gas Liquids
Our Natural Gas Liquids segment owns and operates facilities that gather, fractionate, treat and distribute NGLs and store NGL products, primarily in Oklahoma, Kansas, Texas, Louisiana, New Mexico and the Rocky Mountain region, which includes the Williston, Powder River and DJ Basins. We provide midstream services to producers of NGLs and deliver those products to the two primary market centers: one in the Mid-Continent in Conway, Kansas, and the other in the Gulf Coast in Mont Belvieu, Texas.
We own or have an ownership interest in FERC-regulated NGL gathering and distribution pipelines in Oklahoma, Kansas, Texas, Louisiana, New Mexico, Montana, North Dakota, Wyoming and Colorado, and terminal and storage facilities in Missouri, Nebraska, Iowa and Illinois. The majority of the pipeline-connected natural gas processing plants in the Williston Basin, Oklahoma, Kansas and the Texas Panhandle are connected to our NGL gathering systems. We own and operate truck- and rail-loading and -unloading facilities connected to our NGL fractionation and pipeline assets. We also own FERC-regulated NGL distribution pipelines in Kansas, Missouri, Nebraska, Iowa, Illinois and Indiana that connect our Mid-Continent assets with Midwest markets, including Chicago, Illinois.
Most natural gas produced at the wellhead contains a mixture of NGL components, such as ethane, propane, iso-butane, normal butane and natural gasoline. The NGLs that are separated from the natural gas stream at natural gas processing plants remain in a mixed, unfractionated form until they are gathered, primarily by pipeline, and delivered to fractionators where the NGLs are separated into NGL products. These NGL products are then stored or distributed to our customers, such as petrochemical manufacturers, heating fuel users, ethanol producers, refineries, exporters and propane distributors.
The Natural Gas Liquids segment owns 9,130 miles of gathering pipelines, 4,350 miles of distribution pipelines, eight NGL fractionators with combined operating capacity of 920,000 barrels per day of net capacity, and 6 storage facilities with approximately 30 million barrels of capacity.
These numbers have not yet been updated to include the newly acquired EnLink Midstream assets.
EnLink
On January 31, 2025, ONEOK successfully completed its acquisition of EnLink Midstream. To access the EnLink Customer Center, click here. For emergencies related to the EnLink Midstream assets, call 866-394-9839 (Louisiana) or 877-593-0822 (Oklahoma, New Mexico, and Texas).
ONEOK Hydrocarbon Products and Services
ONEOK Hydrocarbon, L.P., its affiliates, and the companies in which they have invested, process and transport a significant portion of total U.S. NGL production and market NGLs.
Natural Gas Liquids -- We employ an extensive system of pipelines, fractionators and underground storage facilities to gather, process and distribute NGLs.
Liquefied Petroleum Gas Marketing -- Our NGL marketing group purchases, stores and supplies NGLs through terminals located in the central U.S. We offer a variety of services to help manage risk, such as fixed-price forward sales contracts and secure-product supply.
NGL Marketing -- The trading group supports the marketing of product around the physical assets of ONEOK Hydrocarbon, L.P. and the companies in which it invests. The group also manages a marketing operation. ONEOK Hydrocarbon, L.P. trades in the physical and financial markets.
Contacts| NGL Domestic and International Marketing | Russell Arnold | 918-588-7957 |
| NGL Gathering and Fractionation | Jessica Vermillion | 918-732-1463 |
| NGL Regulated Pipelines | Timothy King | 918-732-1339 |
Pipelines
EnLink NGL Pipeline, LP
Click here to view the EnLink tariffs. EnLink NGL Pipeline, LP is also referred to as Cajun-Sibon.
ONEOK Arbuckle North Pipeline, L.L.C.
The Arbuckle Pipeline is a 440-mile pipeline that tranports unfractionated NGLs from southern Oklahoma through the Barnett Shale of north Texas and on to ONEOK's Mont Belvieu fractionation and storage facilities.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 2 | 10/01/2024 | 2.25.2 |
ONEOK Arbuckle II Pipeline, L.L.C.
The Arbuckle II Pipeline is a 530-mile pipeline that transports unfractionated NGLs originating from across ONEOK's supply basins and extensive NGL gathering system in Oklahoma to the company's storage and fractionation facilities at Mont Belvieu, Texas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 1 | 03/01/2022 | 1.3.0 |
| FERC 2 | 03/01/2022 | 2.3.0 |
ONEOK Bakken Pipeline, L.L.C.
The Bakken NGL Pipeline is a 600-mile pipeline with the capacity to transport 140,000 barrels per day of unfractionated NGLs from the Bakken Shale in the Williston Basin to an interconnection with the partnership’s 50%-owned Overland Pass Pipeline in northern Colorado, and then on to ONEOK's Mid-Continent NGL fractionation and storage facilities in central Kansas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 1 | 10/01/2024 | 1.23.0 |
ONEOK Elk Creek Pipeline. L.L.C.
The Elk Creek Pipeline is a 900-mile, 20-inch diameter pipeline with the capacity to transport 300,000 barrels per day of unfractionated NGLs from the Williston Basin to Mid-Continent NGL facilities in Bushton, Kansas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 1 | 03/01/2022 | 1.6.0 |
| FERC 2 | 03/01/2022 | 2.4.0 |
ONEOK NGL Pipeline, L.L.C.
ONEOK NGL Pipeline, L.L.C. operates approximately 2,440 miles of FERC-regulated NGL pipelines with a peak capacity of 393,000 barrels per day. ONEOK NGL gathering pipelines deliver raw unfractionated NGLs gathered in Oklahoma, Kansas and the Texas panhandle to ONEOK's Mid-Continent fractionation facilities. Following the fractionation process, ONEOK NGL distribution pipelines deliver purity NGL products to the NGL market hubs in Conway, Kansas and Mont Belvieu, Texas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| Index of Tariffs | 01/01/2025 | |
| FERC 9 | 01/01/2025 | 9.34.0 |
| FERC 10 | 01/01/2025 | 10.39.0 |
| FERC 11 | 01/01/2025 | 11.33.0 |
| FERC 12 | 10/01/2024 | 12.21.0 |
| FERC 13 | 01/01/2022 | 13.7.0 |
| ONEOK NGL Allocation Policy | 07/15/2007 | Allocation Policy |
ONEOK North System, L.L.C.
ONEOK North System, L.L.C. operates FERC-regulated NGL pipelines that span 1,585 miles and has a capacity to transport up to 134,000 barrels per day, with additional capacity under lease. The pipeline transports NGL purity products and various refined products, including unleaded gasoline and diesel fuel throughout the Midwest markets, particularly near Chicago, Illinois. This system includes approximately 978,000 barrels of storage capacity, both cavern and above-ground tanks, and eight NGL terminals. The system also incorporates a 50 percent ownership of the Heartland Pipeline Company, which consists of three refined-products terminals and connecting pipelines.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| Index of Tariffs | 03/27/2025 | |
| FERC 33 | 10/01/2024 | 33.29.0 |
| FERC 34 | 10/01/2024 | 34.26.0 |
| FERC 35 | 10/01/2024 | 35.22.0 |
| FERC 37 | 10/01/2024 | 37.23.0 |
| FERC 38 | 04/01/2025 | 38.29.0 |
| FERC 39 | 10/01/2024 | 39.31.0 |
| FERC 40 | 10/01/2024 | 40.21.0 |
| FERC 42 | 04/01/2025 | 42.36.0 |
| FERC 43 | 10/01/2024 | 43.25.0 |
| FERC 45 | 10/01/2024 | 45.23.0 |
| FERC 47 | 10/01/2024 | 47.16.0 |
| KCC 4.17 | 01/30/2025 | 4.17 |
| ONEOK North System Allocation Policy - 2019 | 11/26/2019 |
Contacts
| Name | Phone |
|---|---|
| Danny Mills | 918-588-7011 |
ONEOK Southeast Texas NGL Pipeline, L.L.C.
The ONEOK Southeast Texas NGL Pipeline is a 20-mile natural gas liquids pipeline located in Liberty County, Texas, with capacity to transport up to 150,000 barrels per day to EnLink NGL Pipeline, LP in Liberty County, Texas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 1 | 10/01/2024 | 1.8.0 |
ONEOK West Texas NGL Pipeline, L.L.C.
The West Texas NGL Pipeline is an approximately 2,600-mile pipeline that transports unfractionated NGLs from the Permian Basin in southeastern New Mexico and west Texas, the Barnett Shale in central Texas and the Haynesville Shale in east Texas to multiple fractionation and storage facilities in Mont Belvieu, Texas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| Texas Common Carrier | 01/18/2021 | 1.5.0 |
| Texas Common Carrier | 01/01/2025 | 2.45.0 |
| FERC 58 | 01/15/2021 | 58.4.0 |
| FERC 59 | 04/01/2025 | 59.67.0 |
Overland Pass Pipeline Company LLC
The Overland Pass Pipeline is a 50%-owned 760-mile pipeline with the capacity to transport approximately 255,000 barrels per day of unfractionated NGLs from its origin near Opal, Wyoming to Mid-Continent NGL fractionation and storage facilities in central Kansas.The Overland Pass system also includes laterals that extend into the D-J Basin and the Piceance Basin.
Contacts
| Name | Phone |
|---|---|
| Sarah Harris | 918-561-8032 |
Click here to view the EnLink tariffs. EnLink NGL Pipeline, LP is also referred to as Cajun-Sibon.
The Arbuckle Pipeline is a 440-mile pipeline that tranports unfractionated NGLs from southern Oklahoma through the Barnett Shale of north Texas and on to ONEOK's Mont Belvieu fractionation and storage facilities.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 2 | 10/01/2024 | 2.25.2 |
The Arbuckle II Pipeline is a 530-mile pipeline that transports unfractionated NGLs originating from across ONEOK's supply basins and extensive NGL gathering system in Oklahoma to the company's storage and fractionation facilities at Mont Belvieu, Texas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 1 | 03/01/2022 | 1.3.0 |
| FERC 2 | 03/01/2022 | 2.3.0 |
The Bakken NGL Pipeline is a 600-mile pipeline with the capacity to transport 140,000 barrels per day of unfractionated NGLs from the Bakken Shale in the Williston Basin to an interconnection with the partnership’s 50%-owned Overland Pass Pipeline in northern Colorado, and then on to ONEOK's Mid-Continent NGL fractionation and storage facilities in central Kansas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 1 | 10/01/2024 | 1.23.0 |
The Elk Creek Pipeline is a 900-mile, 20-inch diameter pipeline with the capacity to transport 300,000 barrels per day of unfractionated NGLs from the Williston Basin to Mid-Continent NGL facilities in Bushton, Kansas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 1 | 03/01/2022 | 1.6.0 |
| FERC 2 | 03/01/2022 | 2.4.0 |
ONEOK NGL Pipeline, L.L.C. operates approximately 2,440 miles of FERC-regulated NGL pipelines with a peak capacity of 393,000 barrels per day. ONEOK NGL gathering pipelines deliver raw unfractionated NGLs gathered in Oklahoma, Kansas and the Texas panhandle to ONEOK's Mid-Continent fractionation facilities. Following the fractionation process, ONEOK NGL distribution pipelines deliver purity NGL products to the NGL market hubs in Conway, Kansas and Mont Belvieu, Texas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| Index of Tariffs | 01/01/2025 | |
| FERC 9 | 01/01/2025 | 9.34.0 |
| FERC 10 | 01/01/2025 | 10.39.0 |
| FERC 11 | 01/01/2025 | 11.33.0 |
| FERC 12 | 10/01/2024 | 12.21.0 |
| FERC 13 | 01/01/2022 | 13.7.0 |
| ONEOK NGL Allocation Policy | 07/15/2007 | Allocation Policy |
ONEOK North System, L.L.C. operates FERC-regulated NGL pipelines that span 1,585 miles and has a capacity to transport up to 134,000 barrels per day, with additional capacity under lease. The pipeline transports NGL purity products and various refined products, including unleaded gasoline and diesel fuel throughout the Midwest markets, particularly near Chicago, Illinois. This system includes approximately 978,000 barrels of storage capacity, both cavern and above-ground tanks, and eight NGL terminals. The system also incorporates a 50 percent ownership of the Heartland Pipeline Company, which consists of three refined-products terminals and connecting pipelines.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| Index of Tariffs | 03/27/2025 | |
| FERC 33 | 10/01/2024 | 33.29.0 |
| FERC 34 | 10/01/2024 | 34.26.0 |
| FERC 35 | 10/01/2024 | 35.22.0 |
| FERC 37 | 10/01/2024 | 37.23.0 |
| FERC 38 | 04/01/2025 | 38.29.0 |
| FERC 39 | 10/01/2024 | 39.31.0 |
| FERC 40 | 10/01/2024 | 40.21.0 |
| FERC 42 | 04/01/2025 | 42.36.0 |
| FERC 43 | 10/01/2024 | 43.25.0 |
| FERC 45 | 10/01/2024 | 45.23.0 |
| FERC 47 | 10/01/2024 | 47.16.0 |
| KCC 4.17 | 01/30/2025 | 4.17 |
| ONEOK North System Allocation Policy - 2019 | 11/26/2019 |
Contacts
| Name | Phone |
|---|---|
| Danny Mills | 918-588-7011 |
The ONEOK Southeast Texas NGL Pipeline is a 20-mile natural gas liquids pipeline located in Liberty County, Texas, with capacity to transport up to 150,000 barrels per day to EnLink NGL Pipeline, LP in Liberty County, Texas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| FERC 1 | 10/01/2024 | 1.8.0 |
The West Texas NGL Pipeline is an approximately 2,600-mile pipeline that transports unfractionated NGLs from the Permian Basin in southeastern New Mexico and west Texas, the Barnett Shale in central Texas and the Haynesville Shale in east Texas to multiple fractionation and storage facilities in Mont Belvieu, Texas.
Tariffs
| Description | Effective Date | Designation |
|---|---|---|
| Texas Common Carrier | 01/18/2021 | 1.5.0 |
| Texas Common Carrier | 01/01/2025 | 2.45.0 |
| FERC 58 | 01/15/2021 | 58.4.0 |
| FERC 59 | 04/01/2025 | 59.67.0 |
The Overland Pass Pipeline is a 50%-owned 760-mile pipeline with the capacity to transport approximately 255,000 barrels per day of unfractionated NGLs from its origin near Opal, Wyoming to Mid-Continent NGL fractionation and storage facilities in central Kansas.The Overland Pass system also includes laterals that extend into the D-J Basin and the Piceance Basin.
Contacts
| Name | Phone |
|---|---|
| Sarah Harris | 918-561-8032 |