EXHIBIT 21
SUBSIDIARIES OF THE REGISTRANT

 
The following is a list of significant subsidiaries of the Registrant:
 
1

Parker North America Operations, Inc. (Nevada)-100% direct subsidiary.
 
2

Parker Drilling International Holding Company, LLC (Delaware)-100% direct subsidiary.
 
3

Parker Technology, Inc. (Oklahoma)-100% direct subsidiary.
 
4

Universal Rig Service LLC (Delaware)-100% direct subsidiary.
 
5

Parker Drilling Offshore USA, LLC (Oklahoma)-100% indirect subsidiary-owned by Parker Drilling Offshore, LLC (100%).
 
6

Parker Drilling Company International Limited (Nevada)-100% indirect subsidiary-owned by Parker Drilling Eurasia, Inc. (100%)
 
7

Parker Drilling Company Eastern Hemisphere, Ltd. Co. (Oklahoma)-100% indirect subsidiary-owned by Parker Drilling Eurasia, Inc. (100%).
 
8

Parker Drilling Netherlands B.V. (Netherlands)-100% indirect subsidiary-owned by PD Selective Holdings C.V. (100%).
 
9

Parker Drilling Russia B.V. (Netherlands)-100% indirect subsidiary-owned by Parker Drilling Netherlands B.V. (100%).
 
10

Parker Drilling Arctic Operating, LLC (Delaware)-100% indirect subsidiary-owned by Parker North America Operations, Inc. (100%).
 
11

Parker Drilling Offshore International, Inc. (Cayman Islands)-100% indirect subsidiary-owned by Parker Drilling Offshore LLC (100%).
 
12

Primorsky Drill Rig Services BV (Netherlands)-100% indirect subsidiary-owned by Parker Drilling Netherlands B.V. (100%).
 
13

Parker Drilling Management Services, Inc. (Nevada)-100% indirect subsidiary-owned by Parker North America Operations, Inc. (100%).
 
14

Parker Hungary Rig Holding LLC - Guatemala Branch (Guatemala)-100% indirect subsidiary-owned by Parker Hungary Rig Holding LLC (100%).
 
15

International Tubulars FZE (United Emirates)-100% indirect subsidiary-owned by International Tubular Services Limited (100%).
 
16

Parker Hungary Rig Holding LLC - Switzerland Branch (Switzerland)-100% indirect subsidiary-owned by Parker Hungary Rig Holding LLC (100%).
 
17

Parker Drilling Alaska Services, Ltd (United Kingdom)-100% indirect subsidiary-owned by Parker Drilling Arctic Operating, LLC (100%).
 
18
Parker Drilling Overseas B.V. - Abu Dhabi Branch (United Emirates)-100% indirect subsidiary-owned by Parker Drilling Overseas B.V. (100%).
 
19
Quail Tools, L.P. (Oklahoma)-100% indirect subsidiary-owned by Parker Tools, LLC (99%) and Quail USA LLC (1%).
 
20
International Tubular Services De Mexico, S. De R.I. De C.V. (Mexico)-100% indirect subsidiary-owned by International Tubular Services Limited (99%) and ITS Egypt Holdings 2, Ltd (1%).
 
21
Parker Drilling Eurasia, Inc. (Delaware)-100% indirect subsidiary-owned by Parker Drilling International Holding Co LLC (64.8%) and Parker Drilling Offshore LLC (35.2%).
 
22
International Tubular Services Limited (United Kingdom)-100% indirect subsidiary-owned by PD ITS Holdings C.V..
 
 
 
 
 
Note: 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.