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US 2025/0354446 A1Published application
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 apparatus, comprising:
- a magnet arrangement configured to dynamically activate at least one volume of ferromagnetic fluid to form an isolating seal between the downhole logging apparatus and a wellbore fluid.
A downhole logging system comprising:
- an isolated primary analysis region;
- and
- a bypass mechanism configured to route a wellbore fluid externally or internally around the isolated primary analysis region.
A downhole logging apparatus, comprising:
- a primary analysis region containing a benign logging fluid;
- at least one extendable logging sensor pad configured for continuous logging during movement of the downhole logging apparatus;
- and
- one or more sensors configured to monitor ferromagnetic fluid seals isolating the primary analysis region from a wellbore fluid.
1 more element
Dependencies are inferred from the claim text.