Diamond Offshore Drilling, Inc. announced that Ronald Woll has been appointed Senior Vice President and Chief Commercial Officer, effective immediately. Based in Houston, Mr. Woll will have oversight of company marketing and contract acquisition activities. Prior to joining Diamond Offshore, Mr. Woll served as Senior Vice President, Supply Chain at Halliburton, and he has previously worked for Bertelsmann, PricewaterhouseCoopers and General Electric.