7 MACHINE FOR REMOVING GAS FROM DRILLING MUD USED IN DRILLING OPERATIONS , PARTICULARLY IN DRILLING OIL GAS AND GEOTHERMAL WELLS MACHINE FOR REMOVING GAS FROM DRILLING MU USED IN DRILLING OPERATIONS MACHINE FOR REMOVING GAS FROMDRILLING MU USED IN DRILLING OPERATIONS PARTICULARLY IN DRILING OIL, GAS AND GEOTHERMAL WELLS PARTICULARLY IN DRILINGOIL, GAS AND GEOTHERMAL WELLS