Instrument line for insertion in a drill string of a drilling system
AssigneeSchlumberger Technology Corporation
InventorJacques Orban
Life of this patent
Estimating the term…
Abstract
An apparatus for delivering tools within a drill string may include an instrument line including a mechanically resistant external structure with an internal cavity. The instrument line may be configured to be deployed into the drill string. The apparatus may include one or more isolated wires positioned within the internal cavity. The apparatus may also include one or more tools removably coupled to the instrument line and positionable within the drill string. The one or more tools may be configured to provide measurements of conditions within a wellbore via the one or more isolated wires.
Claims12
An apparatus comprising:
- a junction module comprising:
- an upper section comprising:
- a fishing neck for mechanically connecting with a fishing tool conveyed in a drill string by an instrument line;
- and
- a first inductive coupler operable, via the mechanical connection between the fishing neck with the fishing tool, to inductively transfer:
- electrical power from a second inductive coupler of the fishing tool;
- and
- electrical signals from and to the second inductive coupler;
- an electronics section comprising electronics of a downhole tool, wherein the downhole tool is selected from the group consisting of:
- a logging-while-drilling (LWD) tool;
- a measurement-while-drilling (MWD) tool;
- and
- a logging device comprising one or more geophones, acoustic receivers, torque sensors, strain gauges, accelerometers, gyroscopes, current probes, and/or voltmeters;
- and
- a swivel mechanically and electrically connecting the electronics section to the upper section while permitting relative rotation of the electronics section and the upper section within the drill string.
Dependencies are inferred from the claim text.