A method of servicing a wellbore extending from a surface and penetrating a subterranean formation is provided. The method comprises placing a assembly in the wellbore, wherein the assembly comprises at least a first downhole tool, a signal receiver subassembly, and a conveyance between the first do
A method of servicing a wellbore extending from a surface and penetrating a subterranean formation is provided. The method comprises placing a assembly in the wellbore, wherein the assembly 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 assembly and initiating a first function of the first downhole tool based on the first signal.
대표청구항▼
1. A method of servicing a wellbore extending from a surface and penetrating a subterranean formation, comprising: placing an assembly in the wellbore, wherein the assembly comprises at least a first downhole tool, a signal receiver subassembly, and a conveyance between the first downhole tool and t
1. A method of servicing a wellbore extending from a surface and penetrating a subterranean formation, comprising: placing an assembly in the wellbore, wherein the assembly comprises at least a first downhole tool, a signal receiver subassembly, and a conveyance between the first downhole tool and the surface, wherein the first down hole tool and the signal receiver subassembly are coupled to a downhole end of the conveyance;transmitting a first velocity signal by axially moving the assembly in the wellbore proximate to the surface, wherein transmitting the first velocity signal comprises axially moving the assembly to transmit a first discrete value and maintaining the assembly stationary to transmit a second discrete value and wherein the first velocity signal encodes a first discrete number as a sequence of discrete values;receiving by the signal receiver subassembly the first velocity signal generated by contact between the wellbore and the assembly proximate to the first downhole tool; andinitiating a first function of the first downhole tool based on the first velocity signal. 2. The method of claim 1, wherein the first down hole tool comprises one of a packer, a bridge plug, a setting tool, a flow control device, a data collection device, a sampler, a perforating tool, a casing cutting tool, a stimulation tool, a fracturing tool, a drill bit, a reamer, a logging tool, a measure while drilling tool, a log while drilling tool, and a float collar. 3. The method of claim 1, further comprising: transmitting a second velocity signal, the second velocity signal generated by contact between the wellbore and the assembly by axially moving the assembly in the wellbore proximate to the surface, wherein the second signal encodes a second discrete number that is distinct from the first discrete number;receiving by the signal receiver subassembly the second velocity signal; andinitiating a second function of the first downhole tool based on the second velocity signal. 4. The method of claim 1, wherein the assembly further comprises a second downhole tool, further comprising: transmitting a third velocity signal, the third velocity signal generated by contact between the wellbore and the assembly by axially moving the assembly in the wellbore proximate to the surface, wherein the third velocity signal encodes a third discrete number, the third discrete number distinct from the first discrete number;receiving by the signal receiver subassembly the third velocity signal; andinitiating a third function of the second downhole tool based on the third velocity signal. 5. The method of claim 1, further comprising filtering the first velocity signal to substantially reject sub-audio frequency components of the first velocity signal, wherein initiating the first function of the first downhole tool is based on the filtered first velocity signal. 6. The method of claim 5, wherein the filtering of the first velocity signal substantially rejects frequency components of the first velocity signal having a frequency less than about 200 Hertz. 7. The method of claim 5, wherein the filtering of the first velocity signal substantially rejects frequency components of the first velocity signal having a frequency less than about 500 Hertz. 8. The method of claim 1, wherein the conveyance comprises at least one of a string of pipe joints, a solid wire, a braided wire, and coiled tubing. 9. The method of claim 1, wherein the signal receiver subassembly further comprises a vibration sensor to sense the first velocity signal. 10. The method of claim 1, wherein the assembly further comprises a mechanical vibration source configured to induce at least a portion of the mechanical vibration when the assembly moves in the wellbore. 11. The method of claim 1, further comprising configuring the first discrete value into the signal receiver subassembly. 12. The method of claim 1, further comprising sensing pressure, wherein the first function of the down hole tool is inhibited from initiation when a sensed pressure is less than 10 atmospheres. 13. A method of servicing a wellbore extending from a surface and penetrating a subterranean formation, comprising: placing an assembly in the wellbore, wherein the assembly comprises at least a first downhole tool, a signal receiver subassembly, a conveyance between the first downhole tool and the surface, and a mechanical vibration source configured to induce a mechanical vibration when the assembly moves in the wellbore, wherein the first down hole tool, the signal receiver subassembly, and the mechanical vibration source are coupled to a downhole end of the conveyance;transmitting a first velocity signal by axially moving the assembly in the wellbore proximate to the surface, wherein transmitting the first velocity signal comprises axially moving the assembly to transmit a first discrete value and maintaining the assembly stationary to transmit a second discrete value and wherein the first velocity signal encodes a first discrete number as a sequence of discrete values;receiving by the signal receiver subassembly the first velocity signal, wherein the signal receiver infers the first velocity signal from a mechanical vibration generated by contact between the wellbore and the assembly proximate to the first downhole tool; andinitiating a first function of the first downhole tool based on the first velocity signal. 14. The method of claim 13, wherein the mechanical vibration source is an extended probe. 15. The method of claim 13, wherein the mechanical vibration source is configured to provide a consistent mechanical vibration. 16. The method of claim 13, wherein the mechanical vibration source is configured to produce a mechanical vibration having a selected main frequency bandwidth. 17. The method of claim 13, wherein the mechanical vibration source is configured to produce a mechanical vibration having a selected alignment. 18. A method of servicing a wellbore extending from a surface and penetrating a subterranean formation, comprising: placing an assembly in the wellbore, wherein the assembly comprises at least a first downhole tool, a signal receiver subassembly, a conveyance between the first downhole tool and the surface, and a mechanical vibration source configured to induce a mechanical vibration having a selected main frequency bandwidth when the assembly moves in the wellbore, wherein the first down hole tool, the signal receiver subassembly, and the mechanical vibration source are coupled to a downhole end of the conveyance;transmitting a first velocity signal by axially moving the assembly in the wellbore proximate to the surface, wherein transmitting the first velocity signal comprises moving the assembly to transmit a first discrete value and maintaining the assembly stationary to transmit a second discrete value and wherein the first velocity signal encodes a first discrete number as a sequence of discrete values;receiving by the signal receiver subassembly the first velocity signal, wherein the signal receiver infers the first velocity signal from a mechanical vibration generated by contact between the wellbore and the workstring proximate to the first downhole tool; andinitiating a first function of the first downhole tool based on the first velocity signal. 19. The method of claim 18, wherein the mechanical vibration source is further configured to provide a consistent mechanical vibration. 20. The method of claim 19, wherein the mechanical vibration source is further configured to produce a mechanical vibration having a selected alignment.
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