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US 2014/0210633 A1Published application
Method for communicating with logging tools
AssigneeHalliburton Energy Services, Inc.
InventorsAndrew Albert Hrametz, Nathan James Harder, Steve A. Zannoni
Life of this patent
Estimating the term…
Abstract
A method of communication from the surface to the downhole LT is disclosed. The method includes movement of the DS string up or down at the surface to create coded signals by the downhole TS and send those signature signals to a processor in the TS string that has been preprogramed to recognize the signature signals.
Claims20
A method of communicating with a well logging tool disposed in a well bore comprising:
- (a) running a drill pipe string having a longitudinal bore into a well bore to a predetermined position, said drill pipe string including a landing sub disposed proximal to the lower end of the drill pipe string, said landing sub including a landing sleeve having at least one magnet disposed in the landing sleeve;
- (b) disposing in the longitudinal bore of the drill pipe a logging tool string comprising a landing assembly, at least one logging tools, and a sensing device comprising a switch adapted to be activated when the switch in the tool string is proximal to the magnet in the landing sleeve;
- (c) landing the landing assembly of the logging tool string in the landing sub of the drill pipe and activating the switch wherein at least a portion of the tool string including the at least one logging tool is disposed below a distal end of the drill pipe string and at least a portion of the logging tool string is contacting the well bore wall;
- (d) sending a signal to a processor in the logging tool string when the switch is activated;
- (e) raising the drill string while the logging tool string is stationary and contacting the well bore wall, thereby moving the landing sleeve with the magnet relative to the switch disposed in the logging tool string and de-activating the switch;
- (f) sending a signal to a processor in the logging tool string when the switch is deactivated after being moved away from the magnet;
- (g) lowering the drill string and positioning the switch in proximity to the magnet thereby re-activating the switch and sending a signal to the processor;
- (h) repeating the raising and lowering of the drill pipe one or more times in a predetermined time sequence thereby sending a signature signal to the processor;
- and
- (i) in the processor, matching the signature signal received by the processor to a signature signal pattern stored in the processor and sending an output signal correlating to the stored signature pattern to the at least one logging tool to perform an operation.
7 more elements
A method of communicating with a well logging tool disposed in a well bore comprising:
- (a) running a drill pipe string having a longitudinal bore into a well bore to a predetermined position, said drill pipe string including a landing sub including a landing sleeve disposed proximal to the lower end of the drill pipe string;
- (b) disposing in the longitudinal bore of the drill pipe a logging tool string comprising a landing assembly, at least one logging tools, and a sensing device comprising a mechanical switch;
- (c) landing the landing assembly of the logging tool string in the landing sub of the drill pipe and activating the switch by contacting the landing sleeve, wherein at least a portion of the tool string including the at least one logging tool is disposed below a distal end of the drill pipe string and at least of portions of the logging tool string is contacting the well bore wall;
- (d) sending a signal to a processor in the logging tool string when the switch is activated;
- (e) raising the drill string while the logging tool string is stationary and contacting the well bore wall, thereby moving the landing sleeve relative to the switch disposed in the logging tool string and de-activating the switch;
- (f) sending a signal to a processor in the logging tool string when the switch is deactivated;
- (g) lowering the drill string and positioning the switch in contact with the sleeve thereby re-activating the switch and sending a signal to the processor;
- (h) repeating the raising and lowering of the drill pipe one or more times in a predetermined time sequence thereby sending a signature signal to the processor;
- and
- (i) in the processor, matching the signature signal received by the processor to a signature signal pattern stored in the processor and sending an output signal correlating to the stored signature pattern to the at least one logging tool to perform an operation.
7 more elements
A method of communicating with a well logging tool disposed in a well bore comprising:
- (a) running a drill pipe string having a longitudinal bore into a well bore to a predetermined position, said drill pipe string including a landing sub including a landing sleeve disposed proximal to the lower end of the drill pipe string;
- (b) disposing in the longitudinal bore of the drill pipe a logging tool string comprising a landing assembly, at least one logging tool, and a switch comprising a proximity detector including a coil for emitting a high frequency electromagnetic field and a threshold circuit for searching for a change in the magnetic field when the sensor is proximal to a nonferrous sleeve disposed in the landing sub;
- (c) landing the landing assembly of the logging tool string in the landing sub of the drill pipe wherein at least a portion of the tool string including the at least one logging tool is disposed below a distal end of the drill pipe string and at least a portion of the logging tool string is contacting the well bore wall;
- (d) determining by the switch that there is a change in the magnetic field and sending a signal to a processor in the logging tool string when the switch is activated;
- (e) raising the drill string while the logging tool string is stationary and contacting the well bore wall, thereby moving the landing sleeve relative to the switch disposed in the logging tool string and de-activating the switch;
- (f) sending a signal to a processor in the logging tool string when the switch is deactivated;
- (g) lowering the drill string and positioning the switch in contact with the sleeve thereby re-activating the switch and sending a signal to the processor;
- (h) repeating the raising and lowering of the drill pipe one or more times in a predetermined time sequence thereby sending a signature signal to the processor;
- and
- (i) in the processor, matching the signature signal received by the processor to a signature signal pattern stored in the processor and sending an output signal correlating to the stored signature pattern to the at least one logging tool to perform an operation.
7 more elements
Dependencies are inferred from the claim text.