Name of Subsidiary

Jurisdiction of Organization

MRD Operating LLC

Delaware

Memorial Production Partners GP LLC

Delaware

Memorial Resource Finance Corp

Delaware

Beta Operating Company, LLC

Delaware

Memorial Production Partners LP

Delaware

Memorial Production Operating LLC*

Delaware

Memorial Production Finance Corporation*

Delaware

Memorial Midstream LLC*

Texas

Memorial Energy Services LLC*

Delaware

Columbus Energy, LLC*

Delaware

Prospect Energy, LLC*

Colorado

WHT Energy Partners LLC*

Delaware

WHT Carthage LLC*

Delaware

Rise Energy Operating, LLC*

Delaware

Rise Energy Minerals, LLC*

Delaware

Rise Energy Beta, LLC*

Delaware

San Pedro Bay Pipeline Company*

California

Terryville Mineral & Royalty Partners LP

Delaware

TRVL Partners GP LLC

Delaware

* Denotes subsidiaries of Memorial Production Partners LP.