EXHIBIT 21

SUBSIDIARIES OF RPC, INC.

NAME	STATE OF INCORPORATION
Cudd Pressure Control, Inc.	Delaware
Cudd Pumping Services, Inc.	Delaware
Cudd Energy Services Australia Pty Ltd	Australia
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. RPC Energy Services of Canada, Ltd	Delaware New Brunswick, Canada
RPC Investment Company	Delaware
RPC Waste Management Services, Inc. RPC Beijing	Georgia China
Bronco Oilfield Services, Inc. Thru Tubing Solutions Thru Tubing Solutions Australia Pty Ltd Sand Investment Company	Delaware Delaware Australia Delaware
Chippewa Sand Company, LLC Well Control School Australia Pty Ltd	Wisconsin Australia