EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT GPC Inc. of Louisiana-incorporated in the state of Nevada Goodrich Petroleum Company of Louisiana-incorporated in state of Nevada Subsidiaries of Goodrich Petroleum Company of Louisiana Drilling & Workover Company, Inc.-incorporated in state of Louisiana LECE, Inc.-incorporated in the state of Texas National Market Company-incorporated in state of Delaware Pecos Pipeline & Producing Company-incorporated in the state of Texas