E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/06 (2006.01) B01D 19/00 (2006.01) E21B 43/34 (2006.01) E21B 49/08 (2006.01) G01N 33/24 (2006.01)
Patent
CA 2270833
A gas trap liberates subterranean gases entrained in drilling muds. The trap introduces a stripping gas into a flow of mud gas for liberating mud gases. The trap comprises a pair of opposing truncated right circular vessels and having a concentric bottom mud inlet, a side mud outlet and a gas collection port in the freeboard area at the top. A stirrer depends vertically into the trap. The stirrer has radial tubes extending from its lower end and inlet ports at its top end for forming a continuous bore and flow passage therethrough. The radial tube ends are bevelled on the trailing edge. The trap is partially immersed in mud forming a mud level in the trap and a freeboard area above containing air. When rotated, the hollow shaft spins the mud, establishing a flow through the trap and forming a turbulent low pressure area at the bevels, drawing air down the shaft from the upper ports and injecting stripping air into the mud, all of which aids in liberating gases from the mud.
Na
Zamfes Kosta
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