85224493
Jan 24, 2011
Nov 15, 2011
Machines and machine parts for use in the construction, completion, maintenance and repair of oil and gas wells, namely, expandable steel thick walled, solid body that integrates and protects independent anchor and seal sections, using bonded elastomeric elements that provide liner top isolation and enable higher circulation rates for more effective removal of mud and debris during well conditioning and cement displacement
Machinery