Sensor transportation apparatus for a wireline logging tool string
AssigneePetromac IP Limited
InventorStephen Peter McCormick
Life of this patent
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Abstract
A sensor transportation apparatus to convey an elongate sensor assembly through a wellbore, the sensor transportation apparatus comprises a pair of axles and a pair of wheels corresponding with the pair of axles with each wheel mounted on a respective said axle to rotate about an axis of rotation perpendicular to a longitudinal axis of the elongate sensor assembly. A protection structure extends longitudinally around each wheel to prevent a side of the wheel from contacting a wall of the wellbore. Each wheel extends above and below the protection structure to contact a side of the wellbore.
Claims17
A sensor transportation apparatus to convey an elongate sensor assembly through a wellbore, the sensor transportation apparatus comprising:
- at least one engagement structure to connect the sensor transportation apparatus to the elongate sensor assembly,
- at least one pair of axles,
- at least one pair of wheels corresponding with the pair of axles, each wheel mounted on a respective said axle to rotate about an axis of rotation perpendicular to a longitudinal axis of the elongate sensor assembly when the sensor transportation apparatus is connected to the elongate sensor assembly, and
- a pair of protection structures, each protection structure extending longitudinally around an exterior surface of a corresponding wheel from in front of the wheel to behind the wheel, to thereby prevent a side of the wheel from contacting a wall of the wellbore, and
- a central member extending longitudinally from in front of the wheels to behind the wheels, wherein an inner end of each axle is supported by the central member,
- wherein each wheel extends above and below the respective protection structure to contact a side of the wellbore.
Dependencies are inferred from the claim text.