US 2024/0200418 A1 · EXTERNAL INTERVENTION DOWNHOLE DRILLING AND WORKOVER TOOL

Abstract

A downhole workover tool includes an elongate, cylindrical body having opposing lower and upper ends and defining an interior sized to receive a selected portion of a wellbore tubular via the lower end, and a plurality of insert tools receivable within a corresponding plurality of insert chambers (cavities) provided about an outer circumference of the body. At least one of the plurality of insert tools provides slips operable to grippingly engage an outer circumference of the selected portion of the wellbore tubular and thereby prevent the upper portion of the wellbore tubular from reversing out of the interior once received therein. The tool is then operated to mechanically or chemically cut the selected portion of the wellbore tubular.

Claims15

Dependent claims

A downhole workover tool, comprising:

an elongate, cylindrical body having opposing lower and upper ends and defining an interior sized to receive an upper portion of a wellbore tubular via the lower end;
and
a plurality of insert tools receivable within a corresponding plurality of insert chambers provided about an outer circumference of the body,
wherein at least one of the plurality of insert tools provides slips operable to grippingly engage an outer circumference of the upper portion of the wellbore tubular and thereby prevent the upper portion of the wellbore tubular from reversing out of the interior once received therein.

1 more element

A method of undertaking a workover operation, comprising:

conveying a downhole workover tool into a wellbore having a wellbore tubular positioned therein, the downhole workover tool including:
an elongate, cylindrical body having opposing lower and upper ends and defining an interior;
and
a plurality of insert tools receivable within a corresponding plurality of insert chambers provided about an outer circumference of the body;
receiving an upper portion of the wellbore tubular into the interior via the lower end of the body;
anchoring the downhole workover tool to the upper portion of the wellbore tubular by grippingly engaging an outer circumference of the upper portion of the wellbore tubular with at least one of the plurality of insert tools;
and
cutting into the upper portion of the wellbore tubular with at least one of the plurality of insert tools.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/066,608Filed 15 Dec 2022

Published

20 Jun 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

E21B 29/007
Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe: with a radially-retracting cutter rotating outside the pipe
E21B 10/633
With plural detachable cutting elements: independently detachable
E21B 23/01
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells: for anchoring the tools or the…
E21B 29/002
Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming…

External intervention downhole drilling and workover tool

Life of this patent

External intervention downhole drilling and workover tool

Life of this patent

Abstract

Claims15