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US 12,601,228 B2Granted
Alignable guidance device for casing entry milling operations
AssigneeScientific Drilling International, Inc.
InventorsCarsten Freyer, Gerald Heisig
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°, and guidance sensors within the tube section.
Claims9
A method of intercepting an existing well, comprising:
- supplying an alignable guidance device, the alignable guidance device including:
- a tube section;
- 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;
- and
- guidance sensors within the tube section;
- running the alignable guidance device into a wellbore;
- aligning the alignable guidance device relative to a casing using information from the sensors based on alignment of alignable guidance device;
- after aligning the alignable guidance device, holding in place or anchoring the alignable guidance device wherein the alignable guidance device is held using a top drive, rotary table, or kelly drive;
- inserting a casing milling tool into the pre-contoured tube;
- cutting a hole in the in-situ casing with the casing milling tool;
- and
- removing the casing milling tool.
9 more elements
A system for forming a hole in casing, comprising:
- an alignable guidance device including:
- a tube section;
- a casing milling guidance device within the tube section, the casing milling guidance device pre-contoured;
- and
- guidance sensors within the tube section;
- and
- a hydraulic release tool, the hydraulic release tool connected at a first end to the alignable guidance device and at a second end to a run-in string.
4 more elements
A method, comprising:
- supplying a system for forming a hole in casing comprising:
- an alignable guidance device including:
- a tube section;
- a casing milling guidance device within the tube section, the casing milling guidance device pre-contoured;
- and
- guidance sensors within the tube section;
- and
- a hydraulic release tool, the hydraulic release tool connected at a first end to the alignable guidance device and at a second end to a run-in string, wherein the hydraulic release tool includes a latch;
- inserting the system for forming a hole in casing into a wellbore using the run-in string until the system for forming a hole in casing contacts a casing;
- measuring orientation of the casing milling guidance device relative to the casing using the guidance sensors;
- rotating the casing milling guidance device until the casing milling guidance device is facing a centerline of the casing;
- anchoring the alignable guidance device;
- unlatching the latch;
- inserting a casing milling tool through the alignable guidance device;
- and
- cutting a hole in the casing.
13 more elements
Dependencies are inferred from the claim text.