1
EXHIBIT 21
SUBSIDIARIES OF THE REGISTRANT
Percentage of Voting
Securities Owned By
Immediate Parent as of
December 31, 2000
----------------------
Consolidated subsidiaries of the Registrant
(Jurisdiction of incorporation):
Parker Drilling Company of Oklahoma, Inc. (Oklahoma) 100%
Parker Technology, Inc. (Oklahoma) (1) 100%
Parker-VSE, Inc. (formerly Vance Systems Engineering, Inc.) Texas) (2) 100%
Parker Drilling Company International Limited (Nevada) (3) 100%
Parker Drilling Company of New Guinea, Inc. (Oklahoma) 100%
Parker Drilling Company Limited (Nevada) 100%
Parker North America Operations, Inc. (Nevada) (4) 100%
Parker Drilling Offshore Corporation (formerly Hercules 100%
Offshore Corporation) (Texas) 100%
Parker Drilling Company (Bolivia) S.A. (Bolivia) 100%
Certain subsidiaries have been omitted from the list since they would not, even
if considered in the aggregate, constitute a significant subsidiary. All
subsidiaries are included in the consolidated financial statements.
(1) Parker Technology, Inc. owns 100% of two subsidiary corporations,
namely:
Parco Masts and Substructures, Inc. (Oklahoma)
Parker Valve Company (Texas)
(2) Parker-VSE, Inc. (formerly Vance Systems Engineering, Inc.) owns 100%
of Parker Drilling Company Limited (Bahamas) and 93% of Parker
Drilling Company Eastern Hemisphere, Ltd. (Oklahoma). Parker
Drilling Company Limited owns 7% of Parker Drilling Company
Eastern Hemisphere, Ltd. (Oklahoma).
(3) Parker Drilling Company International Limited owns 100% of four
subsidiary corporations, namely:
Parker Drilling International of New Zealand Limited (New
Zealand)
Choctaw International Rig Corp. (Nevada) (which owns 100% of the
common stock of Parker Drilling Company of Indonesia, Inc.
(Oklahoma))
Creek International Rig Corp. (Nevada) (which owns 100% of
Perforadora Ecuatoriana (Ecuador))
(4) Parker North America Operations, Inc. owns 100% of:
Parker Drilling Company North America, Inc. (Nevada).
Parker Drilling U.S.A. Ltd. (Nevada) which owns:
Parker Drilling Offshore International, Inc. (Cayman
Islands)-100%, which owns
Parker Drilling Nigeria Ltd - 60%
Mallard Drilling of South America, Inc.
(Cayman Islands) - 100%
Parker Drilling Offshore U.S.A., L.L.C. (formerly Mallard
Bay Drilling L.L.C.) (Oklahoma) - 99%
Quail Tools, L.L.P. (Oklahoma) - 99%
Parker Technology, LLC (Louisiana) - 99%
Parker Drilling Company Limited (Oklahoma) which owns 1% of:
Parker Drilling Offshore U.S.A., L.L.C. (formerly Mallard Bay
Drilling L.L.C.) (Oklahoma)
Quail Tools, L.L.P. (Oklahoma)
Parker Technology, LLC (Louisiana)