EXHIBIT 21

SUBSIDIARIES OF RPC, INC.

NAME	STATE OF INCORPORATION
RPC Crane Liquidation, LLC	Texas
Cudd Pressure Control, Inc.	Delaware
Cudd Pumping Services, Inc.	Delaware
International Training Services, Inc.	Georgia
Patterson Services, Inc.	Delaware
Patterson Truck Line, Inc.	Louisiana
RPC Energy de Mexico	Ciudad del Carmen, Mexico
RPC Energy International, Inc.	Delaware
RPC Energy Services of Canada, Ltd	New Brunswick, Canada
RPC Investment Company	Delaware
RPC Waste Management Services, Inc.	Georgia
Well Control School de Venezuela, SA	Venezuela