March 22 (Reuters) - Petrel Energy Ltd PRL.AX :
* DAVID CASEY RESIGNS AS MANAGING DIRECTOR
* DENNIS DONALD TO BE MANAGING DIRECTOR & CHIEF EXECUTIVE OFFICER
March 22 (Reuters) - Petrel Energy Ltd PRL.AX :
* DAVID CASEY RESIGNS AS MANAGING DIRECTOR
* DENNIS DONALD TO BE MANAGING DIRECTOR & CHIEF EXECUTIVE OFFICER