Inventors:
Gordon Robert James Mackenzie - Cypress TX, US
Mark Edward Plante - Cypress TX, US
Richard Travis White - Kingwood TX, US
David Alan Dolyniuk - Tomball TX, US
Assignee:
Baker Hughes Incorporated - Houston TX
International Classification:
E21B 47/10
US Classification:
16625008, 166 556, 166 66, 166298, 166196, 166387
Abstract:
A liner hanger test packer assembly includes an axially translated liner top dressing mill having a calibrated shear mechanism for securing the mill at a first, top dressing position. Tool string load on the mill bearing upon the liner top in excess of the calibrated shear mechanism allows the mill to shift to a second axial position where abutment edges around the Mill base engage a tripping mechanism to drive slips against the casing wall above the liner hanger. The tripping mechanism also expands the packer seal against the casing I. D. above the liner hanger. No additional load may be imposed on the liner hanger after the anchor slips have engaged.