DEVICE FOR EXTRACTING AT LEAST ONE TYPE OF GAS CONTAINED IN A DRILLING MUD, AN ANALYSIS ARRANGEMENT AND A RELATED EXTRACTION METHOD

摘要

Equipment (53) include casing (63) and tool (65,67) circulating drilling mud inside the shell (63). The device of the invention also has means (69), enters shell (63) for introducing carrier gas comprising pipe (113) has unit (121), for adjusting the flow rate of gascarrier. Device (53) includes that mash gas extraction pipeline (71) leads to shell (63). Gas introducing apparatus (69) includes sensor (123), stressed adjusting knob (121) and tool (117) are applied on one point positioned at downstream for measuring, and the gascarrier for controlling flow is injected through pressure of adjustment device (121) according to the difference between the pressure of measurement by sensor (123) and identified pressure at expulsion.