Sensor transportation apparatus and guide device
AssigneePetromac IP Limited
InventorStephen Peter McCormick
Life of this patent
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Abstract
A sensor transportation apparatus to convey a sensor assembly through a wellbore. The apparatus comprising has an engagement structure to connect the sensor transportation apparatus to the sensor assembly, and one or more wheels arranged to rotate about an axis of rotation substantially perpendicular to a longitudinal axis of the sensor assembly when the transportation apparatus is connected to the sensor assembly. An orientation structure defining a form having a transverse outline which has a rotational center, wherein the rotational center is offset from a centroidal axis of the elongate sensor assembly.
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 sensor assembly, and
- one or more wheels arranged to rotate about an axis of rotation substantially perpendicular to a longitudinal axis of the sensor assembly when the transportation apparatus is connected to the sensor assembly, and
- an orientation structure defining a form having a transverse outline which has a rotational centre, wherein the rotational centre is offset from a centre of mass of the elongate sensor assembly so that, in use, the sensor transportation apparatus is oriented in a most stable position with the centre of mass of the elongate sensor assembly below the rotational centre.
A logging tool assembly comprising an elongate sensor assembly, a sensor transport apparatus for transporting said sensor assembly through a wellbore, and an orientation structure, the orientation structure and the transportation apparatus separately connected to the elongate sensor assembly, wherein
- the sensor transportation apparatus comprises a first engagement structure to connect the sensor transportation apparatus to the sensor assembly and substantially prevent relative rotation between the sensor transportation apparatus and the sensor assembly, and one or more wheels arranged to rotate about an axis of rotation substantially perpendicular to a longitudinal axis of the sensor assembly when the transportation apparatus is connected to the sensor assembly, and
- wherein the orientation structure comprises a second engagement structure to connect the orientation structure to the elongate sensor assembly and substantially prevent relative rotation between the orientation structure and the sensor assembly about the longitudinal axis of the sensor assembly,
- wherein the orientation structure defines a form that has a transverse outline which has a rotational centre offset from a centre of mass of the elongate sensor assembly so that in use the logging tool assembly is orientated in a most stable position with the centre of mass of the elongate sensor assembly below the rotational centre.
Dependencies are inferred from the claim text.