Systems and methods for determining a wellbore-casing volume
AssigneeSaudi Arabian Oil Company
InventorsHussain AlBahrani, Omar Alblushi
Life of this patent
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Abstract
A method for determining the volume of a wellbore for hydrocarbon extraction in a subsurface. The method includes at each depth of the wellbore, obtaining image data which characterizes the physical properties of the subsurface, calibrating the image data with mechanical caliper or resistivity measurements, determining a radial distance of the wellbore wall, and determining a cross section image of the wellbore wall. The method includes generating a three-dimensional image of the wellbore wall from the cross section images at each depth of the wellbore, determining a volume of a space between the wellbore wall and the predicted location of an internal casing, and determining the amount of material required to fill the volume.
Claims20
A method for determining a volume of a wellbore for hydrocarbon extraction in a subsurface, the method comprising:
- for each of a plurality of depths in the wellbore,
- obtaining image data comprising, an image representing subsurface properties around a casing in the wellbore;
- calibrating the image data including the image, the calibrating configured to adjust at least one subsurface property assigned to at least one pixel in the image;
- determining, from the adjusted subsurface property for the image, a radial measurement of a cross section of the wellbore at a given depth;
- generating, based on the cross section of the wellbore at the given depth, a three-dimensional model of the wellbore;
- determining, based on the three-dimensional model, a volume comprising a space between the wellbore and a predicted location of a casing inside the wellbore;
- and
- determining, based on the volume, an amount of material to fill the volume for sealing the casing when the casing is placed inside the wellbore.
A system for determining a volume of a wellbore for hydrocarbon extraction in a subsurface, the system comprising:
- at least one processor;
- and
- a memory storing instructions that, when executed by the at least one processor, cause the at least one processor to perform operations comprising:
- obtaining image data comprising, an image representing subsurface properties around a casing in the wellbore;
- calibrating the image data including the image, the calibrating configured to adjust at least one subsurface property assigned to at least one pixel in the image;
- determining, from the adjusted subsurface property for the image, a radial measurement of a cross section of the wellbore at a given depth;
- generating, based on the cross section of the wellbore at the given depth, a three-dimensional model of the wellbore;
- determining, based on the three-dimensional model, a volume comprising a space between the wellbore and a predicted location of a casing inside the wellbore;
- and
- determining, based on the volume, an amount of material to fill the volume for sealing the casing when the casing is placed inside the wellbore.
One or more non-transitory computer readable media storing instructions that, when executed by at least one processor, cause the at least one processor to determine a volume of a wellbore for hydrocarbon extraction in a subsurface by performing operations comprising:
- obtaining image data comprising, an image representing subsurface properties around a casing in the wellbore;
- calibrating the image data including the image, the calibrating configured to adjust at least one subsurface property assigned to at least one pixel in the image;
- determining, from the adjusted subsurface property for the image, a radial measurement of a cross section of the wellbore at a given depth;
- generating, based on the cross section of the wellbore at the given depth, a three-dimensional model of the wellbore;
- determining, based on the three-dimensional model, a volume comprising a space between the wellbore and a predicted location of a casing inside the wellbore;
- and
- determining, based on the volume, an amount of material to fill the volume for sealing the casing when the casing is placed inside the wellbore.
Dependencies are inferred from the claim text.