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US 12,398,608 B2Granted
Wellbore exclusion fluid method and apparatus for downhole logging
AssigneeHalliburton Energy Services, Inc.
InventorsChristopher Michael Jones, Xiang Wu, Jichun Sun
Life of this patent
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Abstract
In some embodiments, a downhole logging tool configured for placement in a wellbore comprises a first magnet configured to activate a first volume of ferromagnetic fluid disposed between the downhole logging tool and the wellbore to achieve a first seal between a primary analysis region of the downhole logging tool and a wellbore fluid.
Claims20
A downhole logging tool configured for placement in a wellbore, the downhole logging tool comprising:
- at least a first magnet configured to activate a first volume of ferromagnetic fluid disposed between the downhole logging tool and the wellbore to achieve a first seal between a primary analysis region of the wellbore and a wellbore fluid, and wherein the first volume of ferromagnetic fluid forms at least a first boundary of the primary analysis region;
- and
- a first device positioned on the downhole logging tool and within the primary analysis region of the wellbore, wherein the primary analysis region includes a logging fluid different from the ferromagnetic fluid.
A method comprising:
- conveying a downhole logging tool into a wellbore, wherein the downhole logging tool is configured to obtain measurements from a primary analysis region of the wellbore including a logging fluid;
- and
- activating, via a first magnet, a first volume of ferromagnetic fluid disposed between the downhole logging tool and the wellbore to achieve a first seal between the primary analysis region of the wellbore and a wellbore fluid, wherein the first volume of ferromagnetic fluid forms at least a first boundary of the primary analysis region, and wherein the logging fluid is different from the ferromagnetic fluid.
A system comprising:
- a first volume of ferromagnetic fluid;
- and
- a downhole logging tool configured for placement in a wellbore, wherein the downhole logging tool is configured to obtain measurements from a primary analysis region of the wellbore including a logging fluid different from the ferromagnetic fluid, and wherein the downhole logging tool includes,
- a first magnet configured to activate the first volume of ferromagnetic fluid disposed between the downhole logging tool and the wellbore to achieve a first seal between the primary analysis region of the wellbore and a wellbore fluid, wherein the first volume of ferromagnetic fluid forms at least a first boundary of the primary analysis region.
1 more element
Dependencies are inferred from the claim text.