X0101 EFFECT 33 LIVE 2015-05-01 13:00:00

S-4

0001521847 Memorial Production Partners LP 333-203551 0001569679 Memorial Production Finance Corp 333-203551-11 0001592003 Memorial Midstream LLC 333-203551-10 0001592001 Memorial Energy Services LLC 333-203551-09 0001569659 Rise Energy Beta, LLC 333-203551-08 0001592004 Prospect Energy, LLC 333-203551-07 0001569657 Rise Energy Minerals, LLC 333-203551-06 0001569684 Rise Energy Operating, LLC 333-203551-05 0001578893 WHT Carthage LLC 333-203551-04 0001578859 WHT Energy Partners LLC 333-203551-03 0001569682 Columbus Energy, LLC 333-203551-02 0001569680 Memorial Production Operating LLC 333-203551-01