초록 ▼

A drilling mud degasser apparatus and system consists of a vacuum degasser tank, system of blowers or compressors for evacuation, and various control features associated therewith. The tank has an upward spiraling helical shelf which becomes progressively wider from bottom to top so that mud is disc

A drilling mud degasser apparatus and system consists of a vacuum degasser tank, system of blowers or compressors for evacuation, and various control features associated therewith. The tank has an upward spiraling helical shelf which becomes progressively wider from bottom to top so that mud is discharged in a thin film into the evacuated interior of the tank. Mud level in the tank is controlled by a pair of float operated valves, one controlling a bottom discharge and the other controlling an overflow valve. A plurality of compressors are connected in parallel for evacuating the tank. One compressor runs continually and the others are turned on in response to tank pressure and off in response to compressor outlet temperature. A safety conduit is positioned in parallel to the compressors and includes a swing check valve which opens in response to a pressure surge in the tank to permit the increased pressure to bypass the compressors. The overflow-controlling valve is protected against mud contamination by an inverted U-tube. Mud is normally removed from the bottom discharge under suction provided by mud flowing through an aspirator nozzle.

대표청구항 ▼

A drilling mud degasser system comprising a tank having an inlet for drilling mud and an overhead outlet for removal of gas and a bottom outlet for removal of degassed mud, a plurality of blowers operatively connected to said overhead outlet for evacuating the same to remove gas from drilling mud th

A drilling mud degasser system comprising a tank having an inlet for drilling mud and an overhead outlet for removal of gas and a bottom outlet for removal of degassed mud, a plurality of blowers operatively connected to said overhead outlet for evacuating the same to remove gas from drilling mud therein, pressure operated switch means operable to energize said blowers successively upon occurence of a predetermined pressure on the inlet side of said blowers, and thermostatic switch means responsive to gas temperature on the outlet sides of said blowers and operable upon occurence of a predetermined temperature to deenergize at least one of said blowers. A drilling mud degasser tank comprising a hollow enclosed tank having a side inlet for receiving drilling mud, a top outlet for removal of gas, and a bottom outlet for removal of degassed drilling mud, a helical shelf supported inside the wall of said tank having the bottom end thereof adjacent to said side inlet to receive drilling mud thereon and spiralling upward along the tank wall so that mud moving along said shelf may fall as a thin sheet or film into the interior of the tank, thus facilitating removal of gas therefrom, and said helical shelf narrower at its bottom end than at its top end and tapering outward from bottom to top along its helical length.