Systems, methods, and devices for tagging carbon dioxide stored in geological formations

Abstract

Methods and systems for tagging carbon dioxide to be stored in a geologic formation are disclosed. In some embodiments, a method includes: providing a carbon dioxide tracer that is quantifiable and distinguishable versus non-anthropogenic produced carbon dioxide; providing carbon dioxide to be stored in the geologic formation; determining what portion of the carbon dioxide is anthropogenic produced carbon dioxide; and mixing a predetermined quantity of the carbon dioxide tracer with the carbon dioxide stored to develop a tagged quantity of carbon dioxide for storage in the geologic formation. In some embodiments, a system for tagging a stream of carbon dioxide includes a tagging module and a mixing module. Tagging module includes a carbon dioxide tracer that is quantifiable and distinguishable versus non-anthropogenic produced carbon dioxide. Mixing module includes mechanisms for containing and injecting the carbon dioxide tracer into a stream of carbon dioxide.

What is claimed is: 
     
         1 . A method of tagging carbon dioxide to be stored in a geologic formation, said method comprising:
 providing a carbon dioxide tracer that is quantifiable and distinguishable versus non-anthropogenic produced carbon dioxide;   providing carbon dioxide to be stored in said geologic formation; and   mixing a predetermined quantity of said carbon dioxide tracer with said carbon dioxide stored to develop a tagged quantity of carbon dioxide for storage in said geologic formation.   
     
     
         2 . The method according to  claim 1 , wherein said carbon dioxide tracer includes carbon-14. 
     
     
         3 . The method according to  claim 2 , wherein said carbon dioxide tracer has a concentration of carbon-14 of about 1 part per trillion. 
     
     
         4 . The method according to  claim 1 , wherein said predetermined quantity is based on maintaining a predetermined, naturally occurring ratio of non-anthropogenic produced carbon dioxide to anthropogenic produced carbon dioxide. 
     
     
         5 . The method according to  claim 1 , further comprising the step of determining what portion of said carbon dioxide is anthropogenic produced carbon dioxide. 
     
     
         6 . A system for tagging a stream of carbon dioxide being injected into a geologic storage reservoir, said system comprising:
 a tagging module including a carbon dioxide tracer that is quantifiable and distinguishable versus non-anthropogenic produced carbon dioxide; and   a mixing module for containing and injecting said carbon dioxide tracer into said stream of carbon dioxide at a controlled flowrate over a period of time.   
     
     
         7 . The system according to  claim 6 , wherein said carbon dioxide tracer includes carbon-14. 
     
     
         8 . The system according to  claim 7 , wherein said carbon dioxide tracer has a concentration of carbon-14 of about 1 part per trillion. 
     
     
         9 . The system according to  claim 6 , wherein said mixing module includes a microcartridge for injecting said carbon dioxide tracer into said stream of carbon dioxide, said microcartridge comprising:
 an actuator reservoir including a fluid that does not mix with carbon dioxide, said actuator including means for pressurizing said fluid;   a chamber for storing said carbon dioxide tracer, said chamber including a sealable inlet for filling said chamber with said carbon dioxide tracer, an opening in fluid communication with said actuator reservoir, and an outlet to allow said carbon dioxide tracer to exit said chamber; and   a nozzle in fluid communication with said outlet of said chamber.   
     
     
         10 . The system according to  claim 9 , wherein said means for pressurizing said fluid include a piezoelectric driver mechanism. 
     
     
         11 . The system according to  claim 9 , wherein said means for pressurizing said fluid include a heating circuit for heating said fluid and causing it to thermally expand. 
     
     
         12 . The system according to  claim 9 , wherein said fluid is a non-toxic liquid metal-alloy. 
     
     
         13 . The system according to  claim 12 , wherein said fluid is a gallium alloy. 
     
     
         14 . The system according to  claim 6 , wherein said mixing module includes a high pressure syringe device for injecting said carbon dioxide tracer into said stream of carbon dioxide, said high pressure syringe device comprising:
 a fluid capable of dissolving said carbon dioxide tracer;   a reservoir for containing said fluid and said carbon dioxide tracer dissolved therein, said reservoir including a first inlet for receiving said fluid, a second inlet for receiving said carbon dioxide tracer, and an outlet in fluid communication with said stream of carbon dioxide for allowing said fluid and said carbon dioxide tracer dissolved therein to flow into said stream of carbon dioxide; and   a pressure source for supplying pressure to said high pressure syringe device thereby forcing said fluid and said carbon dioxide tracer dissolved therein in said reservoir to exit said outlet and enter said stream of carbon dioxide.   
     
     
         15 . The system according to  claim 14 , wherein said reservoir includes a liquid membrane for dissolving said carbon dioxide tracer in said fluid. 
     
     
         16 . The system according to  claim 14 , wherein said fluid is methanol or a similar solvent. 
     
     
         17 . The system according to  claim 14 , further comprising controls for controlling a partial pressure and a temperature of said carbon dioxide tracer dissolved in said fluid.