Device for extracting at least one gas contained in a drilling mud and joint analysis of at least a gas contained in a drilling mud

摘要

Device for extracting at least one gas contained in a drilling mud and joint analysis of at least a gas contained in a drilling mud. This device (53) comprises a chamber (63), means (65) for entry of the drilling mud in the chamber (63), means (67) of evacuau00e7u00e3 The drilling mud in the chamber (63).He also includes means (69) for introduction of a gas drag in the chamber (63) and a passage (71) for extraction of gas, which flows into the upper part (75) of the enclosure connected to means (109) for aspiration.The device (53) also includes means (72) for placing in selective ventilation comprising a passage (115) ventilation, drilled on the conduit of extraction (71) and means (117) for filling of the conduit for ventilation (115).These means (117) are adapted to open the ventilation duct (115) when the pressure in at least one point (121) of the device is less than a reference value predetermined. The application in the analysis of the gaseous content of the sludge from the perforation of an oil well.