Methods for assessing a temperature in a subsurface formation
AssigneeShell Oil Company
InventorsDhruv Arora, Ronald Marshall Bass, Graham Patrick Bradford, David Booth Burns, Eric Abreu Gesualdi, Scott Vinh Nguyen, Edward Everett de St. Remey, Stephen Taylor Thompson
Life of this patent
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Abstract
Methods for assessing a temperature in an opening in a subsurface formation are described herein. A method may include assessing one or more dielectric properties along a length of an insulated conductor located in the opening and assessing one or more temperatures along the length of the insulated conductor based on the one or more assessed dielectric properties.
Claims34
A method for assessing a temperature in an opening in a subsurface formation, comprising:
- assessing a profile of one or more dielectric properties with spatial resolution along a length of an insulated conductor located in the opening;
- and
- assessing a temperature profile with spatial resolution along the length of the insulated conductor based on the assessed profile of the one or more dielectric properties.
A method for assessing a temperature at one or more locations in an opening in a subsurface formation, comprising:
- applying a voltage to an insulated conductor locating in the opening, wherein at least a portion of the insulated conductor comprises a core substantially surrounded by an electrical insulator and a jacket, respectively, and the electrical insulator comprises a salt configured to melt at a desired temperature;
- and
- assessing at least one location along the length of the insulated conductor where the salt has melted by assessing the current flowing through the core and the jacket of the insulated conductor.
A method for assessing a temperature at one or more locations in an opening in a subsurface formation, comprising:
- providing a voltage with at least one incident pulse to an insulated conductor locating in the opening, wherein at least a portion of the insulated conductor comprises a core substantially surrounded by an electrical insulator and a jacket, respectively, and the electrical insulator comprises a salt configured to melt in a desired temperature range;
- and
- assessing at least one location along the length of the insulated conductor at which the salt has melted by assessing at least one property of at least one pulse reflected from at least one of the locations at which the salt has melted.
Dependencies are inferred from the claim text.