Abstract: A system for degassing liquid containing mediums, particularly drilling muds which includes a suitable degassing vessel and a vertical shaft centrifugal pump for introducing the liquid medium into the degassing vessel, the pump having the capability of handling liquid mediums of widely varying viscosities and being provided with an inlet housing disposed generally between a pump frame defining a vent chamber and a pump casing, the latter having disposed therein a pump impeller for pumping the liquid medium into the degassing vessel. The inlet housing contains an inlet impeller for directing liquid from the vent chamber downwardly into the inlet housing. Egress passages communicating with the inlet housing direct gas accumulating in the upper portion of the inlet housing vertically upwardly away from the inlet housing.

Abstract: A system for degassing liquid containing mediums, particularly drilling muds which includes a suitable degassing vessel and a vertical shaft centrifugal pump for introducing the liquid medium into the degassing vessel, the pump having the capability of handling liquid mediums of widely varying viscosities and being provided with an inlet housing disposed generally between a pump frame defining a vent chamber and a pump casing, the latter having disposed therein a pump impeller for pumping the liquid medium into the degassing vessel. In one embodiment, the vent chamber is provided with ribs or the like which serve to spoil the spinning motion of the liquid medium which enters the vent chamber above the inlet housing. In a second embodiment, the inlet housing is ported below the vent chamber to provide a discharge for froth which collects under an apertured partition which separates the inlet housing from the vent chamber.

Abstract: A system for degassing fluids, particularly drilling muds, which includes a pump for introducing the gas laden fluid, under pressure, into a closed degassing vessel wherein the gas is disengaged, in a substantially oxygen free atmosphere, from the fluid, the gas and degassed fluids leaving the degassing vessel through a common outlet which is equipped with an exhausting system for discharging the disengaged gas from the system.