System and Method for Downhole Communication
AssigneeHalliburton Energy Services, Inc.
InventorsMichael L. Fripp, Donald Kyle, Pete Dagenais
Life of this patent
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Abstract
A method of servicing a wellbore extending from a surface and penetrating a subterranean formation is provided. The method comprises placing a workstring in the wellbore, wherein the workstring comprises at least a first downhole tool, a signal receiver subassembly, and a conveyance between the first downhole tool and the surface. The method further comprises the signal receiver subassembly receiving a first signal generated by contact between the wellbore and the workstring and initiating a first function of the first downhole tool based on the first signal.
Claims27
A method of servicing a wellbore extending from a surface and penetrating a subterranean formation, comprising:
- placing a workstring in the wellbore, wherein the workstring comprises at least a first downhole tool, a signal receiver subassembly, and a conveyance between the first downhole tool and the surface;
- receiving by the signal receiver subassembly a first signal generated by contact between the wellbore and the workstring;
- and
- initiating a first function of the first downhole tool based on the first signal.
A method of servicing a wellbore extending from a surface and penetrating a subterranean formation, comprising:
- placing a workstring in the wellbore, wherein the workstring comprises at least one downhole tool, a trigger unit subassembly, and a conveyance between the downhole tool and the surface;
- analyzing an indication of a velocity of the workstring in the wellbore as it changes over time to decode a discrete signal encoded by the motion of the workstring in the wellbore, a first discrete value associated with an amplitude of the indication of the velocity of the workstring above a first threshold and a second discrete value associated with an amplitude of the indication of the velocity of the workstring less than a second threshold, the second threshold being less than the first threshold;
- and
- when the discrete signal matches a trigger number, triggering a function of the downhole tool by the trigger unit subassembly.
A method of servicing a wellbore extending from a surface and penetrating a subterranean formation, comprising:
- placing a workstring in the wellbore, wherein the workstring comprises at least a downhole tool, a signal receiver subassembly, and a conveyance between the downhole tool and the surface;
- receiving by the signal receiver subassembly an acoustic signal generated by motion of the workstring relative to the wellbore;
- and
- initiating a function of the downhole tool based on the acoustic signal.
Dependencies are inferred from the claim text.