X0101 EFFECT 33 LIVE 2010-09-01 11:00:00

S-4

0000076321 PARKER DRILLING CO /DE/ 333-167666 0001176493 ANACHORETA INC 333-167666-20 0001176495 PARDRIL INC 333-167666-19 0001176496 PARKER AVIATION INC 333-167666-18 0001061517 PARKER DRILLING CO NORTH AMERICA INC 333-167666-17 0001176498 PARKER DRILLING CO OF NIGER 333-167666-16 0001061510 PARKER DRILLING CO OF OKLAHOMA INC 333-167666-15 0001269651 PARKER DRILLING CO OF SOUTH AMERICA INC 333-167666-14 0001176499 PARKER DRILLING MANAGEMENT SERVICES INC 333-167666-13 0001176500 PARKER DRILLING OFFSHORE CORP 333-167666-12 0001061521 PARKER DRILLING OFFSHORE USA LLC 333-167666-11 0001176501 PARKER NORTH AMERICA OPERATIONS INC 333-167666-10 0001061511 PARKER TECHNOLOGY INC 333-167666-09 0001061524 PARKER TECHNOLOGY LLC 333-167666-08 0001269653 PARKER TOOLS LLC 333-167666-07 0001269654 PARKER USA RESOURCES LLC 333-167666-06 0001176502 PARKER VSE INC 333-167666-05 0001269663 PD MANAGEMENT RESOURCES LP 333-167666-04 0001061522 QUAIL TOOLS LP 333-167666-03 0001269667 QUAIL USA LLC 333-167666-02 0001488296 Parker Drilling Arctic Operating, Inc. 333-167666-01