EXHIBIT 21

SUBSIDIARIES OF RPC, INC.

NAME	STATE OF INCORPORATION
Cudd Pressure Control, Inc.	Delaware
Cudd Pumping Services, Inc.	Delaware
International Training Services, Inc.	Georgia
Patterson Services, Inc.	Delaware
Patterson Truck Line, Inc. RPC Energy de Mexico	Louisiana 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.	Georgia
Bronco Oilfield Services, Inc. Thru Tubing Solutions Sand Investment Company	Delaware Delaware Delaware
Chippewa Sand Company, LLC	Wisconsin