Exhibit 21
SUBSIDIARIES OF THE REGISTRANT
Percentage of Voting
Securities Owned By
Immediate Parent as
of August 31, 1997
Consolidated subsidiaries of the Registrant
(Jurisdiction of incorporation):
Parker Drilling Company of South America, Inc. (Oklahoma) 100%
Parker Drilling Company of Oklahoma, Inc. (Oklahoma) 100%
Parker Technology, Inc. (Oklahoma) (1) 100%
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%
Parcan, Limited (Nevada) (4) 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.
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(1) Parker Technology, Inc. owns 100% of two subsidiary corporations,
namely:
Parco Masts and Substructures, Inc. (Oklahoma)
Parker Valve Company (Texas)
(2) 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 three
subsidiary corporations, namely:
Parker Drilling Company of New Zealand Ltd. (Oklahoma)
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)
(4) Parcan, Limited owns 100% of Parker Drilling U.S.A. Ltd (Nevada) and
50% of Parker Drilling Company North America, Inc. (Nevada). Parker
Drilling U.S.A. Ltd. owns 99% of Mallard Bay Drilling, L.L.C.
(Oklahoma), Quail Tools, L.L. P. (Oklahoma) and Parker Technology,
L.L.C. (Louisiana) and 100% of eight less significant subsidiaries.