Method and apparatus for providing a stream of inert gases...

Details Method and apparatus for providing a stream of inert gases... Method and apparatus for providing a stream of inert gases...

E - Fixed Constructions

21

B

E21B 21/14 (2006.01) C09K 8/38 (2006.01) E21B 21/16 (2006.01)

Patent

CA 2138859

A method and apparatus is provided for use in underbalanced drilling of a well bore. A stream of substantially inert gases is provided by cooling, treating and compressing a stream of exhaust gases. The exhaust gases are cooled to a temperature less than 100°F in a quench tower and a heat exchanger. The cooled gases are treated to reduce their acid content and then compressed to a pressure suitable for underbalanced drilling. The compressed exhaust gases can then be used as the drilling fluids. They may or may not be mixed with atmospheric air or drilling mud.

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