Downhole robots and methods of using same

Patent metadata

Field	Value
Publication number	US-9359841-B2
Application number	US-201213356234-A
Country	US
Kind code	B2
Filing date	Jan 23, 2012
Priority date	Jan 23, 2012
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A wellbore workstring. The workstring comprises a tubular string and a plurality of robots coupled to the tubular string. The robots establish a wireless communication network within a wellbore and deploy actuators to move themselves relative to the tubular string.

First claim

What is claimed is:

1. A wellbore workstring extending from a surface to a wellbore, the wellbore workstring comprising:
a tubular string; and
a plurality of robots establishing a wireless communication network within the wellbore, each of the robots comprising a magnet that couples the robot to the tubular string and an actuator adapted to displace the magnet from the tubular string so that the magnetic attraction between the magnet and the tubular string is reduced, wherein, when the actuator displaces the magnet from the tubular string, the robot is in contact with the tubular string via at least a contact surface of the actuator;
wherein the plurality of robots establish the wireless communication network by establishing wireless communication links with neighboring ones of the plurality of robots within the wellbore; and
wherein the plurality of robots are operable to propagate a wireless signal to the surface or, conversely, to receive a wireless signal from the surface, via the wireless communication network.

2. The wellbore workstring of claim 1 , wherein the robots communicate wirelessly with one another using radio frequency electromagnetic waves.

3. The wellbore workstring of claim 1 , wherein the robots communicate wirelessly with one another using optical signals.

4. The wellbore workstring of claim 1 , wherein the robots communicate wirelessly with one another using vibrations that the robots induce in the tubular string by impacting the tubular string with the actuator.

5. The wellbore workstring of claim 1 , wherein some of the robots are coupled to an outside surface of the tubular string.

6. The wellbore workstring of claim 1 , wherein some of the robots are coupled to an interior surface of the tubular string.

7. The wellbore workstring of claim 1 , wherein the robots are permitted to slide along the tubular string when the actuator displaces the magnet from the tubular string.

Assignees

• Hall Lee J
• Halliburton Energy Services Inc

Inventors

• Hall Lee J

Classifications

• E21B23/00 Primary

  Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens or liners E21B43/10) · CPC title

• E21B47/13

  by electromagnetic energy, e.g. radio frequency · CPC title

• E21B23/001

  Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole · CPC title

• E21B47/122

  Fixed Constructions · mapped topic

• E21B47/12

  Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling · CPC title