UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: April 17, 2012 2:00 P.M.
Form: S-1
CIK: 0001538267
Company Name: SandRidge Mississippian Trust II
File Number: 333-178894
CIK: 0001349436
Company Name: SANDRIDGE ENERGY INC
File Number: 333-178894-01