Alignable guidance device for casing entry milling and cementing operations
AssigneeScientific Drilling International, Inc.
InventorsCarsten Freyer, Gerald Heisig, Mario Simanowski
Life of this patent
Estimating the term…
Abstract
An alignable guidance device includes a tube section and a casing milling shoe within the tube section, a pre-contoured tube within the casing milling shoe that terminates in an exit point in the tube section, the pre-contoured tube exiting the tube section at an exit angle of between 0° and 45°. The alignable guidance device also includes guidance sensors within the tube section and a guidance device EM communications system within the tube section, the guidance device EM communications system in electrical communication with the guidance sensors.
Claims16
An alignable guidance device, comprising:
- a tube section, the tube section including a lower tube portion and an upper tube portion, the lower tube portion having an end plate;
- a casing milling shoe within the tube section, a pre-contoured tube within the casing milling shoe that terminates in an exit point in the tube section;
- guidance sensors within the end plate of the tube section, proximate the exit point;
- a guidance communications system within the lower tube section, the guidance communications system in electrical communication with the guidance sensors;
- and
- a gap, the gap including electrical insulation, the gap positioned between the lower tube portion and the upper tube portion.
An alignable guidance device, comprising:
- a tube section, the tube section including a lower tube portion and an upper tube portion the lower tube portion having an end plate;
- a casing milling shoe within the tube section, a pre-contoured tube within the casing milling shoe that terminates in an exit point in the tube section;
- guidance sensors within the end plate of the tube section, proximate the exit point;
- a wireline transceiver positioned within the lower portion of the tube section in electrical connection with the guidance sensors and the surface of the earth;
- and
- a gap, the gap including electrical insulation, the gap positioned between the lower tube portion and the upper tube portion.
Dependencies are inferred from the claim text.