A wellbore system, tool and method
AssigneeWellguard AS
InventorsEirik ESPE, Fridtjof NYHAVN
Life of this patent
Estimating the term…
Abstract
A well tool having a body configured for deployment in a tubular in a wellbore and having connection means (2; 2a) configured for connection to running 12 tools and control means (3) for connection to uphole control means, characterized 13 by a magnetic field generator (5) configured and controllable by the control means to generate a time—varying magnetic field. Use of the tool as a wellbore heating tool, a cement verification tool or a wellbore plugging tool.
Claims32
A well tool comprising:
- a body configured for deployment in a tubular in a wellbore and comprising a connection means configured for connection to running tools;
- down, controller configured to connect to an uphole controller;
- and
- a magnetic field generator configured and controllable by at least one of the downhole controller or the uphole controller to generate a time-varying magnetic field.
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
A wellbore tubular comprising at least one element having an electrically conducting and eutectic material that is arranged on at least a portion of the tubular.
(canceled)
(canceled)
(canceled)
A wellbore system comprising
- a well tool comprising:
- a body configured for deployment in a tubular in a wellbore and comprising a connection means configured for connection to running tools,
- a downhole controller configured to connect to an uphole controller, and
- a magnetic field generator configured and controllable by at least one of the downhole controller or the uphole controller to generate a time-varying magnetic field:
- and
- a wellbore tubular comprising least one element having an electrically conducting and eutectic material that is arranged on at least a portion of the tubular.
A method of sealing an annular region in a wellbore comprising at least one wellbore tubular, the method comprising:
- conveying a well tool to a location in the tubular proximal to at least one element;
- operating the well tool to generate a time-varying magnetic field, at a sufficient magnitude and duration until the element material reaches its melting temperature;
- allowing the molten material to flow to a desired location;
- and
- allowing the material to cool to a solid state, sealing, material.
A method of forming a plug in a tubular, the method comprising:
- conveying a well tool to a location in the tubular;
- operating the well tool to generate a time-varying magnetic field, at a sufficient magnitude and duration until the element material reaches its melting temperature;
- allowing the molten material to settle on a plug foundation;
- and
- allowing the material to cool to a solid state, sealing, material in the entire tubular cross-section.
A method of heating well fluids in a tubular the method comprising:
- conveying the a well tool to a desired location in the tubular;
- and
- operating the well tool to generate a time-varying magnetic field, at a sufficient magnitude and duration until the housing has reached a desired temperature.
(canceled)
A method of verifying wellbore cement, the method comprising
- conveying a well tool (1e) to a downhole location proximal to said cement;
- operating the well tool to generate a time-varying magnetic field;
- sensing rotational moments of a rotating cylinder or measure the electrical current in a coil array;
- calculate the energy loss due to any conductive material in the cement.
Dependencies are inferred from the claim text.