Helmerich & Payne (HP) 10-K 2005 FY Annual report

Exhibit 21

SUBSIDIARIES OF THE REGISTRANT

Helmerich & Payne, Inc.

Subsidiaries of Helmerich & Payne, Inc.

White Eagle Assurance Company (Incorporated in Vermont)
Helmerich & Payne International Drilling Co. (Incorporated in
	Delaware)

Subsidiaries of Helmerich & Payne International Drilling Co.
	Helmerich & Payne (Africa) Drilling Co. (Incorporated
		in Cayman Islands, British West Indies)
	Helmerich & Payne (Colombia) Drilling Co. (Incorporated
		in Oklahoma)
	Helmerich & Payne (Gabon) Drilling Co. (Incorporated in
		Cayman Islands, British West Indies)
	Helmerich & Payne (Argentina) Drilling Co. (Incorporated
		in Oklahoma)
	Helmerich & Payne (Boulder) Drilling Co. (Incorporated in
		Oklahoma)
	Helmerich & Payne (Peru) Drilling Co., Sucursal del Peru,
		Lima (Lima Branch - Incorporated in Peru)
	Helmerich & Payne (Peru) Drilling Co., Sucursal del Peru
		(Iquitos Branch - Incorporated in Peru)
	Helmerich & Payne (Australia) Drilling Co. (Incorporated
		in Oklahoma)
	Helmerich & Payne del Ecuador, Inc. (Incorporated in
		Oklahoma)
	Helmerich & Payne de Venezuela, C.A. (Incorporated in
		Venezuela)
	Helmerich & Payne Rasco, Inc. (Incorporated in Oklahoma)
	H&P Finco (Incorporated in Cayman Islands, British
		West Indies)
	H&P Invest Ltd. (Incorporated in Cayman Islands), British
		West Indies, doing business as H&P (Yemen) Drilling Co.

Subsidiary of H&P Invest Ltd.
	Turrum Pty. Ltd. (Incorporated in Papua, New Guinea)

The Space Center, Inc. (Incorporated in Oklahoma)

Helmerich & Payne Properties, Inc. (Incorporated in Oklahoma)

Utica Square Shopping Center, Inc. (Incorporated in Oklahoma)

Subsidiaries of Utica Square Shopping Center, Inc.
	Fishercorp, Inc. (Incorporated in Oklahoma)