摘要:
The disclosure relates to a method for determining the content of at least one gas compound contained in a drilling fluid having a set of physical properties, the method comprising: - extracting out of a sample of the drilling fluid a gas fraction of the or each gas compound; - measuring a representative information (y(i)) of the or each gas fraction of each gas compound; - obtaining, for the or each gas compound a correcting factor ( ) relating the measured informatlon (y(i)) for the gas fraction of each compound to the content of said compound in the drilling fluid; wherein the estimated correcting factor ( ) used for the or each gas compound is obtained on the basis of a set of previous correcting factors (p 0 (i)), previously obtained from calibration of reference drilling fluids, each of the reference drilling fluids having at least one physical property substantially identical to the corresponding physical property of the extracted drilling fluid.
摘要:
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.
摘要:
The disclosure relates to an installation for monitoring a drilling fluid exiting a wellbore, the installation comprising a main pipe for discharging the drilling fluid out of the wellbore, a by-pass pipe having an inlet and an outlet in fluid communication with the main pipe , and a flow monitoring sensor situated in the by-pass pipe. The installation further comprises at least one of a main closing device for opening and/or closing the main pipe and a by-pass closing device for opening and/or closing the bypass pipe, and at least an additional sensor for determining at least a parameter relative to the wellbore and a control device for controlling at least one of the main and by-pass closing devices in function of the parameter.
摘要:
The disclosure relates to a heat exchanger (100) for heating a drilling fluid, comprising : - an outer body (102) comprising an inner chamber (113) ; - an inner element (104) fitted in the inner chamber;
said inner element comprising a helical groove (144), said groove and a wall (112) of the inner chamber defining a path for the fluid ; and - a heating source (106) for heat exchange with said path ;
the inner chamber further comprising at least one opening (116), the inner element being able to be removed from the inner chamber through said at least one opening ; the outer body further comprising at least one removable lid (120) closing said at least one opening of the inner chamber.
摘要:
The disclosure relates to a method for processing data collected during a mud logging analysis, comprising: - providing, at a plurality of measuring times, a set of gas measurement values representative of the quantity of at least one gas contained in several samples of a drilling fluid, - providing, at a plurality of controlling times, a set of control values of a control parameter relative to part of an analysis unit for providing the gas samples or the gas measurement values; - matching, for each sample of the drilling fluid, the gas measurement value measured at a given measuring time with at least one control value measured at a controlling time; - evaluating whether each control value of the control parameter is in a normal state.
摘要:
Levels of kerogen and bitumen are computed in a sample of rock from DRIFTS measurements on the sample. The DRIFTS spectrum of a rock sample is measured, resulting in an estimate of bitumen and kerogen. Bitumen is then washed from the rock and DRIFTS is re-measured, resulting in an estimate of kerogen. Bitumen quantity is calculated by subtracting the washed sample results from first DRIFTS measurements.
摘要:
A radiation source device, a measuring device using the radiation source device, and a method of use of the measuring device are described. The radiation source device has a radiolucent window portion, a shielding portion, a radioactive element, and a fluorescent material. The shielding portion has a window portion cavity and the radiolucent window portion extends across and encompasses the window portion cavity. The radioactive element is positioned within the window portion cavity of the shield portion and emits first photons through the window portion cavity and the radiolucent window portion. The fluorescent material is positioned between the radioactive element and the radiolucent window portion. The fluorescent material receives the first photons from the radioactive element and generates second photons.
摘要:
A method is disclosed and performed by collecting, by a volumetric sampler (50), a known volume of a sample from drilling fluid (28) exiting a well bore (12) penetrating a formation (14), the sample having a free gas and a dissolved gas. A first quantity of the free gas entrained in the sample is measured by a free gas detection system (52). The sample is transferred to a dissolved gas detection system (54) after the free gas in the sample is measured. The method is further performed by measuring a second quantity of the dissolved gas in the sample by the dissolved gas detection system. A total amount of one or more certain type of gas in a formation is estimated based on the first and second quantities.
摘要:
Method of monitoring the drilling of a well (13) using an installation (11) comprising a drilling rig (17) floating on the sea (24) the method comprising the steps of: - obtaining an injection flow rate of a drilling fluid, - measuring a flow of a drilling mud recovered from the well in a discharge pipe (25) connected to a diverter (23) of the slip-joint at a discharge measurement point (C), - selecting a comparison point (C') located between the diverter and the discharge measurement point, - obtaining a slope value (0) representative of an angle of the discharge pipe with respect to a horizontal plane (P. - modeling a flow of the drilling mud along the discharge pipe - calculating a first flow rate of the drilling mud at the comparison point using the injection flow rate, and a second flow rate at the comparison point using the measured discharge flow rate, and - performing a comparison between the first drilling mud flow rate and the second drilling mud flow rate to monitor the drilling.