EXHIBIT 21
SUBSIDIARIES OF THE REGISTRANT
 
The following is a list of significant subsidiaries of the Registrant:
 
1

Parker North America Operations, LLC (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, LLC (100%).
 
11

Parker Drilling Offshore International, Inc. (Cayman Islands)-100% indirect subsidiary-owned by Parker North Drilling Offshore Company, 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, Ltd. (Nevada)-100% indirect subsidiary-owned by Parker North America Operations, LLC (100%).
 
14
International Tubulars FZE (United Emirates)-100% indirect subsidiary-owned by International Tubular Services Limited (100%).
 
15
Parker Hungary Rig Holding LLC (Hungary)-100% indirect subsidiary-owned by Parker Drillsource, LLC (100%).
 
16
Parker Drilling Company Kuwait Limited (Bahamas)-100% indirect subsidiary-owned by PD Selective Holdings C.V. (100%).
 
17
JSC Parker Drilling Company of Sakhalin (Russia)-100% indirect subsidiary-owned by Parker Drilling Netherlands B.V. (100%).
 
18
Quail Tools, L.P. (Oklahoma)-100% indirect subsidiary-owned by Parker Tools, LLC (99%) and Quail USA LLC (1%).
 
19
International Tubular Services De Mexico, S. De R.I. De C.V. (Mexico)-100% indirect subsidiary-owned by International Tubular Services Limited (99.74%) and ITS Egypt Holdings 2, Ltd (0.26%).
 
20
Parker Drilling Eurasia, Inc. (Delaware)-100% indirect subsidiary-owned by Parker Drilling International Holding Company, LLC (64.8%) and Parker Drilling Offshore Company, LLC (35.2%).
 
21
International Tubular Services Limited (United Kingdom)-100% indirect subsidiary-owned by PD ITS Holdings C.V. (100%).
 
22
Parker Drilling Company of New Guinea, LLC (Delaware)-100% indirect subsidiary-owned by PD Selective Holdings C.V. (100%).
 
23
Parker Central Europe Rig Holdings Limited Liability Company (Hungary)-100% indirect subsidiary-owned by Parker Drilling (Kazakhstan), LLC (100%).
 
24
Parker Singapore Rig Holding Pte. Ltd. (Singapore)-100% indirect subsidiary-owned by PD Selective Holdings C.V. (100%).
 
25
Parker Drilling Canada Company (Canada)-100% indirect subsidiary-owned by Parker Technology, Inc. (100%).
 
26
2M-Tek, Inc. (Louisiana)-100% indirect subsidiary-owned by Parker Drilling Offshore Company LLC (100%).
 
27
Parker Drilling Overseas B.V. (Netherlands)-100% indirect subsidiary-owned by Parker Drilling Netherlands B.V. (100%).
 
 
 
 
 
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.