Method And Apparatus For Pipe-Conveyed Well Logging
AssigneeSchlumberger Technology Corporation
InventorsThomas D. MacDougall, Harold S. Bissonnette
Life of this patent
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Abstract
A well logging instrument deployment device according to this aspect of the invention includes a housing configured to be coupled to a pipe string. A latch disposed in the housing and is configured to retain a well logging instrument in a first longitudinal position inside the pipe string. An actuator is configured to release the latch to enable longitudinal movement of the well logging instrument inside the pipe string. A signal detector is operatively coupled to the actuator and is the configured to detect a command signal for operating the actuator.
Claims11
A well logging instrument deployment device, comprising:
- a conveyance device configured to be coupled to a pipe string;
- an actuator configured to release the well logging instrument from within the pipe string so that the logging instrument extends at least partially out from an end of the pipe string;
- and
- a device for terminating longitudinal motion of the well logging instrument at a second longitudinal position when a selected portion of the logging instrument is exposed below an end of the pipe string, wherein the device for terminating longitudinal motion comprises a tapered retaining key configured to cooperatively engage a groove in an exterior of the well logging instrument.
A method for well logging, comprising:
- releasing a well logging instrument from a conveyance device;
- and
- moving the well logging instrument longitudinally inside the pipe string until a device for terminating longitudinal motion of the well logging instrument engages a groove in an exterior of the well logging instrument with a tapered retaining key.
A well logging system comprising:
- a pipe string;
- and
- an instrument deployment device comprising:
- a conveyance device configured to be coupled to the pipe string;
- an actuator configured to release a well logging instrument from a first longitudinal position within the pipe string;
- and
- a device for terminating longitudinal motion of the well logging instrument at a second longitudinal position when a selected portion of the logging instrument is exposed below an end of the pipe string, wherein the device for terminating longitudinal motion comprises a tapered retaining key configured to cooperatively engage a groove in an exterior of the well logging instrument.
Dependencies are inferred from the claim text.