Chemistry: analytical and immunological testing – Geochemical – geological – or geothermal exploration – Using chemical tracers
Reexamination Certificate
2007-05-29
2007-05-29
Gakh, Yelena G. (Department: 1743)
Chemistry: analytical and immunological testing
Geochemical, geological, or geothermal exploration
Using chemical tracers
C436S028000, C436S029000
Reexamination Certificate
active
10235327
ABSTRACT:
The invention provides a method of online and on-site tracer generation for tagging natural gas stored in underground storage fields wherein feedstock is drawn from a feedstock source. The feedstock undergoes initial analysis to determine hydrocarbon levels. The feedstock then undergoes reaction to produce tracers such as ethylene, propylene, acetylene hydrogen and carbon monoxide. The feedstock is then analyzed to determine post reaction tracer concentration. The feedstock including generated tracers is then introduced back into the feedstock stream. Tracer levels in the pre-reaction or initial analysis of feedstock are compared with tracer levels in the post-reaction feedstock and the rate of flow of feedstock through the system is adjusted to achieve a predetermined level of tracer concentration. The level of tracer concentration will then be used to identify the particular natural gas charge in a storage field.
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Chen Shiaoguo
Coleman Dennis D.
Rostam-Abadi Massoud
Ruch Rodney R.
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