Parasitically powered signal source and method

Abstract

A system for monitoring a wellbore including a parasitic power generation configuration, a signal source in operable connection with the parasitic power generation configuration, the source being permanently positioned within the wellbore and capable of providing a signal that is receivable by a separate device to query condition of the wellbore, and method for monitoring the wellbore.

1 . A system for monitoring a wellbore comprising:
 a parasitic power generation configuration;   a signal source in operable connection with the parasitic power generation configuration, the source being permanently positioned within the wellbore and capable of providing a signal that is receivable by a separate device to query condition of the wellbore.   
   
   
       2 . The system as claimed in  claim 1  wherein the parasitic power generation configuration is a sucker rod dependent configuration. 
   
   
       3 . The system as claimed in  claim 1  wherein the seismic source is a spark gap source. 
   
   
       4 . The system as claimed in  claim 1  wherein the signal is seismic. 
   
   
       5 . A method for monitoring a wellbore comprising:
 generating power parasitically with a parasitic power generation configuration;   applying the generated power to a permanently installed signal source;   generating a signal from the signal source;   reflecting the signal from the wellbore;   receiving the reflected signal with a receiving device.   
   
   
       6 . The method as claimed in  claim 5  wherein the generating of the signal is continuous over time. 
   
   
       7 . The method as claimed in  claim 5  wherein the generating of the signal is periodic over time. 
   
   
       8 . The method as claimed in  claim 4  wherein the signal is a seismic signal.