Parker Drilling (PKDC) 10-K 2012 FY Annual report

EXHIBIT 21

SUBSIDIARIES OF THE REGISTRANT

Consolidated Subsidiaries of the Registrant (Jurisdiction of incorporation):

Parker North America Operations, Inc. (Nevada)(3)	100	%
Parker Drilling Arctic Operating Inc. (Delaware)	100	%
Parker Drilling International Holding Company LLC (Delaware)(1)	100	%
Parker Drilling Management Services, Inc. (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.

(1) Parker Drilling International Holding Company owns 64.8% of Parker Drilling Eurasia, Inc. (Delaware)

(2) Parker North America Operations, Inc. owns 100% of Parker Drilling Company North America, Inc. (Nevada); Parker USA Drilling Company (Nevada) and Parker Drilling Offshore Corporation (Nevada).*

* Parker Drilling Offshore Corporation owns 100% of the following entities:

• Mallard Argentine Holdings, Ltd. (Cayman Islands)

• Mallard Drilling of South America, Inc. (Cayman Islands)

• Mallard Drilling of Venezuela, Inc. (Cayman Islands)

• Parker Drilling Offshore International, Inc. (formerly Mallard Drilling International, Inc.)(Cayman Islands), which owns 100% of Parker Drilling (Nigeria) Limited (Nigeria) and 100% of KDN Drilling Limited (Nigeria).

• Parker Drilling Offshore USA, L.L.C. (Oklahoma), which owns 100% of Parker Drilling Company of Mexico, LLC (Nevada), 98% of Parker Drilling de Mexico, SRL (Mexico), 2% of PD Servicios Integrales, SRL (Mexico) and 100% of Parker Enex, LLC (Delaware).

• Parker Technology, L.L.C. (Louisiana)

• Parker Tools, LLC (Oklahoma), which owns 99% of Quail Tools, L.P. (formerly Quail Tools, L.L.P.) (Oklahoma).

• Quail USA, LLC (Oklahoma), which owns 1% of Quail Tools, L.P. (formerly Quail Tools, L.L.P.) (Oklahoma).

SUBSIDIARIES OF THE REGISTRANT(continued)

* Parker Drilling Offshore Corporation owns 98% of PD Servicios Integrales, SRL (Mexico).

* Parker Drilling Offshore Corporation owns 2% of Parker Drilling de Mexico, SRL (Mexico).

* Parker Drilling Offshore Corporation owns 35.2% of Parker Drilling Eurasia, Inc. (Delaware), which owns 100% of Parker Drilling Company International Limited (Nevada), 100% of Parker Drilling Company Eastern Hemisphere, Ltd. Co. (Oklahoma), 100% of Parker Drillserv, LLC (Delaware), 100% of Parker Drilltech, LLC (Delaware) and 99.96% of PD Offshore Holdings C.V. (Netherlands) which owns 100% of Parker 3source, LLC (Delaware) and 99.97% of PD Selective Holdings C.V. (Netherlands) which owns 100% of the following entities:

• Parker Drillex, LLC (Delaware)

• Parker Drilling AME Limited (Cayman Islands)

• Parker Drilling Company of New Guinea, LLC (Delaware)

• Parker Drilling Company of Sakhalin (Russia)

• Parker Drilling Company of Singapore, LLC (Delaware)

• Parker Drilling Netherlands B.V. (Netherlands), which owns 100% of Parker Drilling International B.V. (Netherlands), 100% of Parker Drilling Kazakhstan B.V. (Netherlands), 100% of Parker Drilling Russia B.V. (Netherlands), 100% of Parker Drilling Overseas B.V. (Netherlands), 100% of Primorsky Drill Rig Services BV (Netherlands)

• Parker Drillsource, LLC (Delaware)

• Parker Drilling Company Kuwait Limited (Bahamas)

• PD Labor Sourcing, Ltd. (Cayman Islands)

• PD Personnel Services, Ltd. (Cayman Islands)

• Parker Singapore Rig Holding Pte. Ltd. (Singapore)

* Parker Drilling Offshore Corporation owns 26% of Parker Drilling Pacific Rim, Inc. (Delaware), which owns 100% of Parker Rigsource, LLC (Delaware) and 99.88% of PD International Holdings C.V. (Netherlands) which owns 100% of Parker 5272, LLC (Delaware) and 99.96% of PD Dutch Holdings C.V. (Netherlands) which owns 100% of the following entities:

• Parker Drilling (Kazakhstan), LLC (Delaware), which owns 100% of Parker Central Europe Rig Holdings LLC (Hungary) and 100% of Aral Parker CJSJ (Kazakhstan)

• Parker Drilling Company International, LLC (Delaware), which owns 50% of Parker SMNG Drilling LLC (Russia)

• Parker Drilling Company of New Zealand Limited (New Zealand)

• Parker Drilling Dutch B.V. (Netherlands), which owns 100% of Parker Drilling Offshore B.V. (Netherlands) and 50% of SaiPar Drilling Co. BV (Netherlands)

• Parker Drilling International of New Zealand Limited (New Zealand)

(3) Parker Drilling Management Services, Inc. owns 1% of PD Management Resources, L.P., and 100% of Parker USA Resources, LLC, which owns 99% of PD Management Resources, L.P.**

** PD Management Resources, L.P. and Parker USA Resources, LLC were merged into Parker Drilling Management Services, Inc. effective December 31, 2012 at 11:59 p.m.