UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: November 29, 2012 2:00 P.M.
Form: S-4
CIK: 0000798949
Company Name: UNIT CORP
File Number: 333-184917
CIK: 0001517151
Company Name: Unit Drilling Co
File Number: 333-184917-12
CIK: 0001517152
Company Name: Unit Petroleum Co
File Number: 333-184917-11
CIK: 0001517153
Company Name: Superior Pipeline Company, L.L.C.
File Number: 333-184917-10
CIK: 0001517172
Company Name: Unit Texas Drilling, L.L.C.
File Number: 333-184917-09
CIK: 0001517367
Company Name: Unit Drilling USA Columbia, L.L.C.
File Number: 333-184917-08
CIK: 0001517368
Company Name: Unit Drilling Columbia, L.L.C.
File Number: 333-184917-07
CIK: 0001517371
Company Name: Unit Texas Co
File Number: 333-184917-06
CIK: 0001517174
Company Name: Superior Pipeline Texas, L.L.C.
File Number: 333-184917-05
CIK: 0001517173
Company Name: Superior Appalachian Pipeline, L.L.C.
File Number: 333-184917-04
CIK: 0000310405
Company Name: UNIT DRILLING & EXPLORATION CO
File Number: 333-184917-03
CIK: 0001517370
Company Name: Petroleum Supply Co
File Number: 333-184917-02
CIK: 0001517369
Company Name: Preston County Gas Gathering, L.L.C.
File Number: 333-184917-01