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!
Shareholder Inquiries: 1-877-208-7318
Royalties Relations:1-918-588-7463
Schedule K-1: 1-800-371-2188
Call 811 before you dig.
Shareholder Inquiries: Royalties Relations:Schedule K-1: 
Contact ONEOK Partners
Call 811 before you dig.