Inventors:
Robert Frank Berry - Houston TX
Assignee:
Dresser Industries, Inc. - Dallas TX
International Classification:
E21B 2300
Abstract:
One or more unitary, internally toothed sleeves are located in a packer mechanism in partially slidable relationship on the packer mandrel such that actuation of the packer serves to rotate the locking sleeves on the mandrel, causing the internally toothed sections to engage the mandrel and maintain the packer in the set position.