Controlled gas trap system.

摘要

An improved gas trap for mud logging is vertically mounted such that its lower end (16) is constantly beneath the surface (72) of mud flowing in a tank. The mud is drawn into a housing (12) where it is agitated to release the entrained gases which are drawn off the measurement. The spent mud is returned to the tank through a mud exit port (50) and related pipe (62) to a point below the level of the mud and remote from the mud intake to the gas trap. This gas trap is insensitive to mud level changes and is relatively free of maintenance requirements. <IMAGE>