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US 9,803,468 B2Granted
Wellbore caliper with maximum diameter seeking feature
AssigneeSchlumberger Technology Corporation
InventorAlan James Sallwasser
Life of this patent
Estimating the term…
Abstract
A wellbore caliper includes an actuator housing pivotally connected at one end to a well logging instrument housing and an actuator disposed in the housing and operable to extend and retract laterally extensible measuring arms.
Claims19
A wellbore caliper, comprising:
- an actuator housing pivotally connected at one end to a well logging instrument housing;
- an actuator disposed in the housing and operable to extend and retract laterally extensible measuring arms, wherein the actuator housing is substantially neutrally buoyant in a wellbore.
A method for well logging, comprising:
- moving a well logging tool along an interior of a wellbore drilled through formations, the well logging tool comprising a caliper, the caliper comprising an actuator housing pivotally connected at one end to a well logging instrument housing, an actuator disposed in the housing, wherein the housing is substantially neutrally buoyant in the wellbore and operable to extend and retract laterally extensible measuring arms;
- and
- measuring an internal dimension of the wellbore by determining a lateral extension of the measuring arms.
Dependencies are inferred from the claim text.