Abstract: Disclosed is a method of modelling a subsurface volume.

Abstract: The disclosure includes a process for treating a natural gas containing carbon dioxide wherein the natural gas is separated by a cryogenic process in order to provide, on the one hand, a stream of liquid carbon dioxide, containing hydrocarbons, and, on the other hand, purified natural gas; at least one part of the natural gas is cooled in a first heat exchanger and then in a second heat exchanger before the cryogenic process and/or before a reflux to the cryogenic process; at least one part of the stream of liquid carbon dioxide is recovered in order to provide a stream of recycled carbon dioxide; the stream of recycled carbon dioxide is divided into a first portion and a second portion; the first portion is expanded and then heated in the first heat exchanger, in order to provide a first stream of heated carbon dioxide; the second portion is cooled, then at least one part of the second portion is expanded and then heated in the second heat exchanger, in order to provide a second stream of heated carbon dioxi

Abstract: A method is provided for fracturing a geological hydrocarbon reservoir, including the static fracturing of the reservoir by hydraulic pressure, and the electrical fracturing of the reservoir by generating an electric arc in a well drilled into the reservoir. This enables the improved fracturing of the reservoir.

Abstract: Disclosed is a method of modelling a subsurface volume. History data for one or more parameters over a first period of time is obtained. The first period of time comprises a plurality of schedule periods, each schedule period having associated with it a sampled value of the considered parameter at the corresponding time. A merge error value is attributed to plural pairs of consecutive schedule periods, the merge error value representing a magnitude of the error in a merged value of each parameter over the duration corresponding to a pair of schedule periods being considered, relative to the sampled values for said pair of schedule periods being considered. The pair of schedule periods which have the smallest error value attributed thereto is merged, and the merged schedule period has attributed to it, the corresponding merged value of the corresponding parameter. The error value calculation and merger steps are repeated so as to reduce the total number of schedule periods.

Abstract: A water treatment method is provided. The method includes filtering water in a membrane filtration unit including at least one membrane filtration module, collecting a permeate and collecting a retentate at the outlet of the membrane filtration module, withdrawing solid materials and/or hydrocarbons contained in the retentate, in order to provide a treated retentate, recycling the treated retentate at the inlet of the membrane filtration module, and providing a treated water flow from the permeate from membrane filtration module(s). An installation adapted for applying this method is also provided.

Abstract: Disclosed is a method for characterising the evolution of a reservoir by determining a seismic wavelet which links observed seismic data to a sequence of reflectivities. The method comprises obtaining seismic data (200) representing seismic changes which have occurred between a first time and a second time, said seismic data comprising a plurality of seismic traces; and performing an optimisation operation simultaneously (230) on the seismic traces so as to optimise for said seismic wavelet. The optimisation operation may be performed without using known reflectivity data as an input.

Abstract: Catalytic process for the partial conversion of a gaseous mixture containing carbon monoxide and hydrogen into a mixture of hydrocarbons, including bringing the said gaseous mixture into contact with a solid catalyst, the solid catalyst having a porous support with a composite material including SiC and a titanium carbide and/or a titanium oxide, and an active phase. The support is prepared in the form of grains, beads, or extrudates, or in the form of cylinders or sheets of cellular foam.

Abstract: Disclosed is a method of determining front propagation within a subsurface volume such as a reservoir. The subsurface comprises a plurality of cells and at least one geological fault (210). The method comprises performing a fast marching algorithm so as to determine said front propagation in terms of the time of arrival of the front at a particular cell from one or more neighbouring cells which make up the neighbourhood of said particular cell. For each faulted cell (C) that is adjacent a geological fault, the neighbourhood of the faulted cell is defined as comprising only its geometric neighbours (NS, NG cells and NG cells) where the geometric neighbours are those cells that are in contact with the faulted cell in a geometric sense, regardless of stratification.

Abstract: A method for testing a curing composition, comprising includes a curing composition; injecting the curing composition into a mold; curing the curing composition into a cured composition, in the mold at a controlled curing pressure; measuring at least one physical or mechanical property of the cured sample at a controlled test pressure, in the mold; the mold being rigid relatively to the cured sample during the curing step.

Abstract: A device is provided for fracturing a geological hydrocarbon reservoir including two packers defining between them a confined space in a well drilled in the reservoir; a pump for increasing the pressure of a fluid in the confined space; an apparatus for heating the fluid; at least one pair of two electrodes arranged in the confined space; and an electric circuit for generating an electric arc between the two electrodes, the circuit including at least one voltage source connected to the electrodes and an inductance between the voltage source and one of the two electrodes. The device permits improved fracturing of the reservoir.

Abstract: The present disclosure relates to a method for constituting a collection of chromatograms of a reference mixture of organic compounds. The present disclosure also relates to a method for the identification of compounds in a sample of an organic mixture using a collection of chromatograms. A kit is also provided for the identification of at least one compound in a sample from an organic mixture. The method and kit belong to the field of analytical chemistry.

Abstract: The invention relates to a method for upgrading heavy liquid fractions resulting from oil refining, by combustion in a fluidized-bed chemical looping process. The method according to the invention allows energy to be produced by oxidizing totally the heavy liquid feeds while allowing direct capture of the CO2 emitted in the combustion fumes. The method according to the invention also allows a synthesis gas to be produced.

Abstract: Disclosed is a method of modelling a subsurface volume, and a corresponding computer program and apparatus. The method comprises defining a regular planar grid of regularly arranged locations in the two dimensions substantially parallel to the surface, and calculating a plurality of one dimensional arrays, each one dimensional array extending from a different one of the regularly arranged locations, in the direction from surface to subsurface. Each of the one dimensional arrays comprises a plurality of one dimensional cells, wherein the cells are delineated according to actual geological features of the subsurface volume.

Abstract: A flow rate control valve and a method for injecting a fluid into an underground formation are provided. In accordance with the method, the fluid is transported in at least one injection pipe. The injection pipe has a main portion including a single tube. The flow rate control valve has at least ten fluid transport tubes that are arranged in parallel. A ratio of the cross-section of the main portion over the sum of the cross-sections of the fluid transport tubes is less than or equal to 5. A flow rate of the fluid circulating in the injection pipe is adjusted by distributing the fluid through all or only some of the fluid transport tubes. The fluid from the injection pipe is then injected into the underground formation.

Abstract: There are provided methods for analyzing air including monitoring the air. For example, monitoring the air includes electronically sensing the air and determining whether an event in the air is occurring based on at least the electronically sensing. If an event is occurring, a sample of the air is collected for a further analysis. For example, the analysis is carried out to identify components present in the sample. There are also provided systems for analyzing air comprising : an air intake; an electronic sensor and a controller configured to monitor the air. Monitoring air includes controlling the air intake, controlling the electronic sensor to electronically sensing the air and determining whether an event in the air is occurring based on at least the electronically sensing. If an event is occurring, a sample of the air is collected for further analysis (e.g. to identify components present in the sample).

Abstract: For controlling a hydrocarbons production installation, comprising at least one hydrocarbons production string activated by a gas injection using a gas injection choke, and a production choke on the string, a method comprises a production phase during which the position of at least one of the chokes is adjusted by cascaded control loops. The loops are driven according to continuously or sequentially developing setpoint parameters. The installation can be controlled more accurately and quickly than in the prior art, as a cascade control loop architecture makes it possible to simplify each of the loops in order to increase the speed of implementation, while still taking account of a greater number of setpoint parameters.

Abstract: Disclosed is a method of monitoring the behaviour of a subsurface volume. The method comprises transforming a single discrete parameter or an ensemble of discrete parameters describing an attribute of the subsurface volume, each discrete parameter having N possible discrete values with N ?2, into N indicator parameters each having 2 possible discrete values; for each of the two value classes of each indicator parameter, determining the anisotropic distance to a value transition interface; transforming each of the indicator parameters into a corresponding continuous parameter using the determined anisotropic distance to the value transition interface; and using the continuous parameters in a history matching process.

Abstract: Disclosed is a method monitoring changes in saturation of a subsurface volume. The method comprises: obtaining observed data of saturation behaviour from the subsurface volume over time; using one or more models, obtaining simulated data of saturation behaviour from the subsurface volume over time; and transforming each of the observed data and simulated data.

Abstract: A barrier connector arrangement (20) for a multi-pipe pipeline (14) for use in a subsea environment, the pipeline (14) comprising at least one inner pipe (12) and an outer pipe (11) having a dry annulus (13) thereinbetween, and one or more cables (50, 51) extending along the annulus (13), the connector arrangement (20) comprising: an outer housing (21) configured to be joined to the outer pipe (11) to define a dry interior housing with the annulus (13); and one or more dry barrier chambers (26, 27) extending through and welded to the housing (21) for connecting one or more of the cables (50, 51) in the pipeline (14) with one or more external cables in the subsea environment.

Abstract: A unit for establishing contact between a liquid and a gas includes: a chamber having a vertical axis; a first series of contact sections disposed along the length of the vertical axis of the chamber; a second series of contact sections disposed along the length of the vertical axis of the chamber, alternated with the contact sections of the first series; and a liquid circulation system designed to circulate a liquid in the contact sections of the first series and in the contact sections of the second series in a separate manner.