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US 11,078,754 B2Granted
Downhole test tool and method of use
AssigneeArdyne Holdings Limited
InventorsGeorge Telfer, Alan Fairweather, Michael Wardley, James Linklater
Life of this patent
Estimating the term…
Abstract
A well bore integrity test tool (10) and method of pressure integrity testing a well bore by performing positive and negative pressure tests in a well bore in multiple locations in the well and on the same trip as other operations in the well bore. The tool includes a resettable anchor mechanism (20) and a tension set packer assembly (22). An embodiment of performing a dress-off, integrity testing, casing cutting and pulling in a single trip for well abandonment is described.
Claims18
A downhole integrity testing tool, the tool comprising:
- a substantially cylindrical assembly having first and second ends adapted for connection in a work string;
- an anchor mechanism configured to grip a section of tubular in a well bore;
- and
- a packer assembly being settable to create a seal between the tool and the tubular to thereby allow the flow of fluids into a sealed area to perform an integrity test;
- wherein the anchor mechanism is hydraulically actuated, resettable and the tool is configured to operate in:
- a first configuration wherein the anchor mechanism and the packer assembly are unset so that rotation of the work string is transmitted through the tool;
- a second configuration wherein the anchor mechanism is set to grip the tubular and the packer assembly is unset so that fluid may be circulated through the tool without movement of the tool;
- and
- a third configuration wherein the anchor mechanism and the packer assembly are both set in order to perform an integrity test.
6 more elements
A downhole integrity testing tool, the tool comprising:
- a substantially cylindrical assembly having first and second ends adapted for connection in a work string;
- an anchor mechanism configured to grip a section of tubular in a well bore;
- and
- a packer assembly being settable to create a seal between the tool and the tubular to thereby allow the flow of fluids into a sealed area to perform an integrity test;
- wherein the anchor mechanism is pneumatically actuated, resettable and the tool is configured to operate in:
- a first configuration wherein the anchor mechanism and the packer assembly are unset so that rotation of the work string is transmitted through the tool;
- a second configuration wherein the anchor mechanism is set to grip the tubular and the packer assembly is unset so that fluid may be circulated through the tool without movement of the tool;
- and
- a third configuration wherein the anchor mechanism and the packer assembly are both set in order to perform an integrity test.
6 more elements
A method of pressure integrity testing a well bore, the method comprising:
- (a) providing an integrity testing tool comprising:
- a substantially cylindrical assembly having first and second ends adapted for connection in a work string;
- an anchor mechanism configured to grip a section of tubular in a well bore;
- and
- a packer assembly being settable to create a seal between the tool and the tubular to thereby allow the flow of fluids into a sealed area to perform an integrity test;
- wherein the anchor mechanism is resettable and the tool is configured to operate in:
- a first configuration wherein the anchor mechanism and the packer assembly are unset so that rotation of the work string is transmitted through the tool;
- a second configuration wherein the anchor mechanism is set to grip the tubular and the packer assembly is unset so that fluid may be circulated through the tool without movement of the tool;
- and
- a third configuration wherein the anchor mechanism and the packer assembly are both set in order to perform an integrity test;
- (b) operating the tool in the first configuration with:
- the packer assembly and the anchor mechanism being unset;
- and
- operating a further tool on the work string via rotation of the work string through the tool;
- (c) operating the tool in the second configuration by:
- actuating the anchor mechanism to grip a section of a well bore;
- and
- pumping fluid throuah the tool and up an annulus between the tool and a tubular in the well bore;
- (d) operating the tool in the third configuration by:
- actuating a packer assembly to seal the well bore;
- and
- monitoring at surface for pressure changes in the fluid indicative of loss of integrity;
- and
- wherein the method is performed in a single trip in the well bore and wherein the steps of dressing-off a cement plug, cutting and pulling a section of the tubular are also performed on the same trip in the well bore.
21 more elements
Dependencies are inferred from the claim text.