Abstract: The invention relates to a catalyst system for catalyzing conversion of carbon dioxide into multi-carbon compounds comprising a boron-doped copper catalytic material and associated methods.

Abstract: A method for treating a natural gas containing carbon dioxide using membrane modules which are assigned to a first treatment stage or a second treatment stage and are fluidically connected to a retentate mode or a permeate mode. When evolution in the operating conditions results in one of the processing levels requiring less membrane surface for gas processing and the other processing level requiring more membrane surface for gas processing, then the method allows for reassignment of needed membrane modules assigned from one processing level requiring less membrane surface to another processing level requiring more membrane surface.

Abstract: It is proposed a method which comprises providing a geomechanical model of the geological environment, measurements of a first geological attribute each performed at a respective first position of the geological environment, constraints on a second geological attribute related to a yield criterion and each assigned to a respective second position of the geological environment, and a geomechanical simulator. The method also comprises determining the stress field derivable from the data outputted by the geomechanical simulator taking as input the geomechanical model and an optimal set of one or more boundary conditions. This provides an improved solution for estimating in situ stress field of a geological environment.

Abstract: The invention relates to a computer-implemented method for generating an image of a subsurface of an area of interest from seismic data. The method comprises providing seismic wavefields, providing a zero-offset seismic wavefield dataset, determining a seismic velocity parameter model w(x) comprising an initial model w0(x), a low frequency perturbation term ?mb(x) and a high frequency perturbation term ?mr(x), determining an optimal seismic velocity parameter model wopt(x) by computing a plurality of iterations, each iteration comprising calculating and optimizing a cost function, said cost function being dependent on the zero-offset seismic wavefield and on the low frequency perturbation term ?mb(x) as a parameter in the optimization of the cost function, the high frequency perturbation term ?mr(x) being related to the velocity parameter model w(x) to keep the provided zero-offset seismic wavefield data invariant with respect to the low frequency perturbation term ?mb(x).

Abstract: Systems and methods for including overstay and human behavior in the pricing structure of a plug-in electric vehicle (PEV) charging station, in order to maximize operating revenue, and manage overstay duration. A mathematical framework with discrete choice models (DCM) is incorporated to operate a PEV charging station with an optimal pricing policy and charge control. The framework determines the probability of a PEV driver selecting various charging options, including overstay price. The pricing options are charging-flexibility, which allows a controller to manage charging costs over a parking duration, charging-asap, which charges the electric vehicle immediately and continuously until the vehicle departs, the battery is fully charged, or a desired level of charge has been reached, and leaving, which is an opportunity cost to the charging station.

Abstract: The protection device has a valve and a valve actuator, able to move the valve to a closed position when a pressure upstream of the valve exceeds a predetermined threshold pressure. The valve actuator includes a biaiser, to maintain the valve in an open position; an actuation mechanism, to move the valve to the closed position, the actuation mechanism with a fluid sampling passage to fluidly connect the flow line to a fluid actuated surface of the actuation mechanism. At least a rupture element preventing the passage of fluid from the flow line when the pressure upstream of the rupture element is lower than the threshold pressure, the rupture element being able to break at the threshold pressure.

Abstract: The invention relates to a method of analyzing a rock sample, comprising:—placing a rock sample (2) containing a first fluid into a cell (1);—feeding the cell (1) with at least one second fluid and withdrawing said second fluid from the cell (1), leaving the rock sample (2) immersed in the second fluid; and—measuring an amount of first fluid spontaneously released from the rock sample (2). The invention also relates to an apparatus adapted for implementing this method.

Abstract: The invention notably relates to a computer-implemented method for processing a 4D seismic signal relative to a subsoil, the subsoil including a zone subject to extraction and/or injection, the method comprising: providing the 4D seismic signal; identifying a part of the 4D seismic signal corresponding to a zone of the subsoil distinct from the zone subject to extraction and/or injection; determining a noise model of the 4D seismic signal based on the identified part of the 4D seismic signal; and processing the 4D seismic signal based on the noise model. This improves the field of 4D seismic data processing.

Abstract: The present disclosure relates to a process for converting syngas to C2+ alcohols, said process comprising the steps of providing a reactor, of providing a catalyst composition and one or more acidic materials within said reactor, of providing a feed stream comprising a mixture of H2 and CO; and of contacting said feed stream with said catalyst composition and said one or more acidic materials under reaction conditions to provide product stream. Said process is remarkable in that said catalyst composition comprises an active phase comprising CuFe deposited on a carbon-containing support, and the one or more acidic materials are one or more zeolites having a Si/Al molar ratio ranging between 2 and 200.

Abstract: The invention notably relates to a computer-implemented method for designing a geological simulation grid, the method comprising: providing a geometrical grid that conforms to a set of geological structures of a geological environment; providing a geometrical surface that represents a geological surface of the geological environment, the geological surface being outside the set of geological structures; identifying geometrical structures of the geometrical grid that each correspond to a respective location of the geometrical surface; and transferring to each identified geometrical structure one or more respective parameters, each parameter being a value of a respective property of the geological surface. This improves the field of geological simulation.

Abstract: The invention relates to the use of a non-ionic surfactant and an anionic surfactant for enhancing the injectivity of an injection well, wherein the non-ionic surfactant and the anionic surfactant are added to produced water, to form a reinjection stream which is injected into a subterranean formation by the injection well.

Abstract: A method for determining a plasticity parameter of a hydrating, cement paste by mixing the components to obtain a cement slurry, pouring the cement slurry in a scaled oedometric cell, and performing an oedometric measurement operation within a predefined early-age time interval by applying a predefined axial stress path to the cement slurry over a predefined measurement duration and measuring an axial strain. A plasticity parameter of the hydrating cement paste is determined b a calibration processing operation comprising providing an initial value of a plasticity parameter of an elastoplastic model of hydrating cement paste, determining simulated axial strain values by solving the elastoplastic model of hydrating cement and comparing the simulated axial strain values with the axial strain measurements of the cement slurry.

Abstract: The invention relates to a catalyst system for electrocatalyzing conversion of CO2 into multi-carbon hydrocarbons and/or alcohols, and to the method to produce it. The catalyst comprises a core-shell structure comprising a core that is composed of metal sulphide and a shell that is composed of a metal with vacancies.

Abstract: The structure comprises a hull extending longitudinally along a longitudinal hull axis, a mooring equipment, comprising a first group of mooring lines connected to an anchor on the bottom of the body of water, the mooring lines of the first group protruding laterally beyond a first side of the hull, opposite the second side of the hull. The mooring equipment comprises a second group of mooring lines protruding laterally beyond the second side, and connected to an anchor located away from the second side on the bottom of the body of water. The mooring lines of the first group are connected on the first side of the hull, the space facing a second lateral wall of the hull being free of mooring lines.

Abstract: An automated system for preparing, detecting and analyzing a first fluid sample containing biological species, the preparation, detection and analysis system including at least one fluidic cartridge that includes at least one fluidic concentration and lysis module and one fluidic detection module including an array of several amplification chambers arranged in parallel, an apparatus including a mechanical assembly comprising at least one movable rod fastened to the frame and comprising a free end arranged to cooperate with a flexible membrane of the fluidic concentration and lysis module, an optical measurement system for measuring fluorescence through one or more amplification chambers of the fluidic detection module of the cartridge, a control and processing unit.

Abstract: A tubular joint having an outer part formed by a fitting end of a piping element, and defining a first axis, an inner part formed by a spigot end of another piping element, the spigot end received in the fitting end. The fitting end and the spigot end define a fluid internal circulation space. A flange attached on the outer part and axially abutting against a shoulder formed by the inner part. A layer of polymeric material, extending radially between the outer and inner part, having a radially outer and inner surface both surrounding the first axis and bonded respectively to the outer and inner parts. The inner part rotatable with respect to the outer part about the first axis, and the inner part defining a second axis forming a pitch angle with the first axis. The inner part, the outer part, and the flange limit the pitch angle to lower than 5°.

Abstract: The invention relates to an electrocatalyst for reduction of CO2 to produce multi-carbon compounds, comprising a multi-metal material comprising a primary metal being copper and at least one enhancer metal selected from germanium, gallium, tin, silicon, silver, gold, zinc and aluminium. The invention also relates to a process for electrochemical production of a multi-carbon compound from CO2 using such an electrocatalyst.

Abstract: The invention relates to a computer-implemented method for generating an image of a subsurface of an area of interest from seismic data. The method comprises providing seismic wavefields, providing a zero-offset seismic wavefield dataset, determining a seismic velocity parameter model w(x) comprising an initial model w0(x), a low frequency perturbation term ?mb (x) and a high frequency perturbation term ?mr(x), determining an optimal seismic velocity parameter model wopt(x) by computing a plurality of iterations, each iteration comprising calculating and optimizing a cost function, said cost function being dependent on the zero-offset seismic wavefield and on the low frequency perturbation term ?mb(x) as a parameter in the optimization of the cost function, the high frequency perturbation term ?mr(x) being related to the velocity parameter model w(x) to keep the provided zero-offset seismic wavefield data invariant with respect to the low frequency perturbation term ?mb(x).

Abstract: The present invention relates to a method for determining a time window in which a casing pressure test can be performed without damaging a cement sheath. The time window is determined by: determining the hydration degree of the cement at a given time for a considered pressure and temperature values in the well; and then comparing the determined hydration degree to a predetermined value. If the determined hydration degree is below the predetermined value, then the casing pressure test can be done without damaging the cement.

Abstract: An improved solution for estimating the flow rate of a fluid in the wells of a hydrocarbon production installation, during production. A hydrocarbon production installation can include at least two production wells, each production well including at least one device adapted for providing an estimate of the flow rate of a fluid in the well based on respective data, the wells being connected to a test separator adapted for providing an estimate of the cumulative flow rate of the fluid for all of the wells based on respective data. Further, during production, a data reconciliation and validation process can involve the data relative to the devices and the test separator.