Overland Pass Pipeline, L.L.C.

The Overland Pass Pipeline is a 760-mile natural gas liquids pipeline that originates in Opal, Wyoming, and terminates near Conway, Kansas, at one of the nation’s primary natural gas liquids supply and storage hubs. The pipeline travels through 23 counties in three states: five in Wyoming, six in Colorado and 12 in Kansas, transporting approximately 255,000 barrels per day.  See map.


811 Logo

The national Call Before You Dig number, 811, was created to help protect you from unintentionally hitting underground utility lines while working on digging projects.

One call to 811 gets your underground utility lines marked for free!


  • Phone Customer Service Shareholder Inquiries:
    877-208-7318

  • Phone Customer Service Royalties Relations:
    918-588-7463

  • Phone Customer Service Schedule K-1:
    800-371-2188

  • EmailContact ONEOK Partners
  • 811 logoCall 811 before you dig.