Abstract: Gas-extraction device (152) for extracting at least one gas contained in a drilling mud, the device comprising: —an enclosure (162), —an equipment (164) for supplying the drilling mud to the enclosure (162), —an equipment (170) for introducing a carrier gas into the enclosure (62; 162), wherein the device comprises a flow regulator (204) able to regulate the flow rate of a gas flow containing at least carrier gas, and a pressure controller situated downstream of the enclosure (162) configured for locally setting a pressure lower than the pressure of the enclosure (162), wherein the flow, regulator (204) is interposed between the pressure controller and the enclosure (162).

Abstract: Gas-extraction device (152) for extracting at least one gas contained in a drilling mud, the device comprising: —an enclosure (162), —an equipment (164) for supplying the drilling mud to the enclosure (162), —an equipment (170) for introducing a carrier gas into the enclosure (62; 162), wherein the device comprises a flow regulator (204) able to regulate the flow rate of a gas flow containing at least carrier gas, and a pressure controller situated downstream of the enclosure (162) configured for locally setting a pressure lower than the pressure of the enclosure (162), wherein the flow, regulator (204) is interposed between the pressure controller and the enclosure (162).

Abstract: A device (118) for automatically calibrating an analyzer (112) used for mud gas or fluid logging, comprising: a cabinet (140) having a plurality of dedicated reception slots (144), each slot (144) being configured for the insertion of a canister (148) containing a known calibration mixture, the cabinet (140) containing: a main line (174) to be connected to the analyzer (112), a connection assembly able to selectively connect each reception slot (144) to the main line (174), a control unit (151) for controlling the connection assembly to successively connect at least two successive slots (144) to the main line (174).

Abstract: The device comprises an extractor (53) having an outlet (71) at which a gas stream is sampled. The gas stream contains at least one hydrocarbon to be analyzed and at least one interfering compound. A transport line (54), is connected to the outlet (71) of the extractor (53) to transport the gas stream to an analyzer (55A) comprising a detector being able to measure at least one of the hydrocarbons to be analyzed contained in this gas stream. The device comprises a chemical reactor (141) located between the extractor (53) and the detector. At least a portion of the extracted gases is transported through the chemical reactor (141) where a selective catalytic reaction of at least one interfering compound is carried out without any substantial reaction of at least one of the hydrocarbons to be analyzed.

Abstract: A device (118) for automatically calibrating an analyzer (112) used for mud gas or fluid logging, comprising: a cabinet (140) having a plurality of dedicated reception slots (144), each slot (144) being configured for the insertion of a canister (148) containing a known calibration mixture, the cabinet (140) containing: a main line (174) to be connected to the analyzer (112), a connection assembly able to selectively connect each reception slot (144) to the main line (174), a control unit (151) for controlling the connection assembly to successively connect at least two successive slots (144) to the main line (174).

Abstract: A fast field mud gas analyzer is presented. The fast field mud gas analyzer has a splitter system; a plurality of analytical lines composed of a micro chromatographic column and one or more detector; one or more heating element; and a computer system. The splitter system selectively applies a portion of an effluent sample flow through one or more outlets. The analytical lines are in fluid communication with the splitter system and receive at least a portion of the effluent sample flow. The micro chromatographic column separates portions of the effluent sample flow. The detector analyzes the separated portions and generates information indicative of analysis of the separated portions. The heating element heats the portion of the effluent sample flow within the analytical line. The computer system controls the splitter system and the one or more heating element and receives the information from the detectors.

Abstract: The device comprises an extractor (53) having an outlet (71) at which a gas stream is sampled. The gas stream contains at least one hydrocarbon to be analyzed and at least one interfering compound. A transport line (54), is connected to the outlet (71) of the extractor (53) to transport the gas stream to an analyzer (55A) comprising a detector being able to measure at least N one of the hydrocarbons to be analyzed contained in this gas stream. The device comprises a chemical reactor (141) located between the extractor (53) and the detector. At least a portion of the extracted gases is transported through the chemical reactor (141) where a selective catalytic reaction of at least one interfering compound is carried out without any substantial reaction of at least one of the hydrocarbons to be analyzed.