UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: April 23, 2008 4:00 P.M.
Form: S-1
CIK: 0001417003
Company Name: WHITING USA TRUST I
File Number: 333-147543
CIK: 0001255474
Company Name: WHITING PETROLEUM CORP
File Number: 333-147543-01