Abstract: The gas-liquid separator having an introduction duct defining an introduction opening receiving the multiphase fluid stream, and a static first separation stage extending along a longitudinal axis, connected with the introduction duct, the first separation stage including an outer wall, an inner wall and at least an inner baffle inducing an helical movement of the multiphase fluid stream around the longitudinal axis driving a liquid contained in the fluid stream onto the outer wall and a gas contained in the multiphase fluid stream onto the inner wall. The outer wall or/and the inner wall delimit(s) at least a lateral orifice evacuating a respective one of the liquid or the gas separated along the inner baffle, each lateral orifice extending along each inner baffle and defining a lateral staged evacuation of the respective one of the liquid or of the gas in an evacuation canal along the respective inner and outer walls.

Abstract: The present invention relates to a liquid evacuation device for an extraction well. The device comprises a tank presenting a liquid accumulation area. The tank is connected to a gas evacuation tubing. An insulant limits a flow of fluid between a wall of the tank and a wall of the well, from a first space formed between the insulant and the well bottom to a second space formed between the insulant and the well head. A first opening on the tank enables circulation of a gas-liquid mixture from said first space to a third space formed in the gas evacuation tubing. A second opening on the tank enables circulation of fluid from said second space to the liquid accumulation area. The first opening is made between the liquid accumulation area and the connection to the evacuation tubing.

Abstract: The present invention concerns a system for extracting the liquids from a well producing liquid and gas. The system comprises a separation wall defining, in the well, a first space and a second space; a liquid-gas separator; and a system for eliminating separated liquid. The first space is suitable for conveying a mixture comprising the gas and liquid from a production area to the separator. The separator is suitable for separating the gas and liquid from the mixture. The second space receives the liquid separated from the mixture. Finally, the elimination system is suitable for eliminating the separated liquid using at least the gravitational potential energy of said separated liquid in the second space.

Abstract: The gas-liquid separator having an introduction duct defining an introduction opening receiving the multiphase fluid stream, and a static first separation stage extending along a longitudinal axis, connected with the introduction duct, the first separation stage including an outer wall, an inner wall and at least an inner baffle inducing an helical movement of the multiphase fluid stream around the longitudinal axis driving a liquid contained in the fluid stream onto the outer wall and a gas contained in the multiphase fluid stream onto the inner wall. The outer wall or/and the inner wall delimit(s) at least a lateral orifice evacuating a respective one of the liquid or the gas separated along the inner baffle, each lateral orifice extending along each inner baffle and defining a lateral staged evacuation of the respective one of the liquid or of the gas in an evacuation canal along the respective inner and outer walls.

Abstract: A hydrocarbon production facility includes: a hydrocarbon well; a hydrocarbon production line including: in the well, a production tube, and on the surface, an evacuation tube from the production tube; on the surface, a source of pressurized gas; an injection line of pressurized gas in the hydrocarbon production line, linked to the source of pressurized gas; a pump for circulation of hydrocarbon from the well hydrocarbon circulation; a pneumatic motor for supplying power to the pump, fitted on the injection line of the pressurized gas and adapted to be rotated by expansion of the pressurized gas. A corresponding production method and an upgrade method of a facility are also disclosed.

Abstract: The present invention relates to a liquid evacuation device for an extraction well. The device comprises a tank presenting a liquid accumulation area. The tank is connected to a gas evacuation tubing. An insulant limits a flow of fluid between a wall of the tank and a wall of the well, from a first space formed between the insulant and the well bottom to a second space formed between the insulant and the well head. A first opening on the tank enables circulation of a gas-liquid mixture from said first space to a third space formed in the gas evacuation tubing. A second opening on the tank enables circulation of fluid from said second space to the liquid accumulation area. The first opening is made between the liquid accumulation area and the connection to the evacuation tubing.

Abstract: The present invention concerns a system for extracting the liquids from a well producing liquid and gas. The system comprises a separation wall defining, in the well, a first space and a second space; a liquid-gas separator; and a system for eliminating separated liquid. The first space is suitable for conveying a mixture comprising the gas and liquid from a production area to the separator. The separator is suitable for separating the gas and liquid from the mixture. The second space receives the liquid separated from the mixture. Finally, the elimination system is suitable for eliminating the separated liquid using at least the gravitational potential energy of said separated liquid in the second space.

Abstract: A hydrocarbon production facility includes: a hydrocarbon well; a hydrocarbon production line including: in the well, a production tube, and on the surface, an evacuation tube from the production tube; on the surface, a source of pressurized gas; an injection line of pressurized gas in the hydrocarbon production line, linked to the source of pressurized gas; a pump for circulation of hydrocarbon from the well hydrocarbon circulation; a pneumatic motor for supplying power to the pump, fitted on the injection line of the pressurized gas and adapted to be rotated by expansion of the pressurized gas. A corresponding production method and an upgrade method of a facility are also disclosed.

Abstract: Some embodiments include a heavy-oil-based hydrocarbons effluent production installation for the production of hydrocarbons from at least one well. The installation includes an effluent-lightening fluid injection system at the bottom of the well, an effluent-evacuation pump, a plurality of sensors that measure physical units relating to the installation, and an automated device suitable for optimizing the lightening-fluid injection flow-rate and for regulating the pump speed. The automated device regulates the pump speed according to the physical units and a predetermined target production value. The speed of the pump and the physical units are within a predetermined range of values. some embodiments include a hydrocarbons production method in such an installation. Some embodiments make it possible to ensure a minimum consumption of lightening fluid, while ensuring good operation of the pump and good productivity of the well.

Abstract: The invention relates to a method for increasing the pressure of a liquid/gas multiphase fluid, and a method for compressing a gaseous fluid, comprising: (b1) entrainment of the gaseous fluid using a motive liquid, to obtain a pressurized mixture of gas and motive liquid; (b2) separation of the pressurized mixture obtained in the preceding step in order to obtain, on the one hand, a compressed gas, and on the other hand, an auxiliary liquid. The invention further relates to devices for this purpose. Application to the production of hydrocarbons.

Abstract: Some embodiments include a heavy-oil-based hydrocarbons effluent production installation for the production of hydrocarbons from at least one well. The installation includes an effluent-lightening fluid injection system at the bottom of the well, an effluent-evacuation pump, a plurality of sensors that measure physical units relating to the installation, and an automated device suitable for optimizing the lightening-fluid injection flow-rate and for regulating the pump speed. The automated device regulates the pump speed according to the physical units and a predetermined target production value. The speed of the pump and the physical units are within a predetermined range of values. some embodiments include a hydrocarbons production method in such an installation. Some embodiments make it possible to ensure a minimum consumption of lightening fluid, while ensuring good operation of the pump and good productivity of the well.

Abstract: The invention relates to a method for increasing the pressure of a liquid/gas multiphase fluid, and a method for compressing a gaseous fluid, comprising: (b1) entrainment of the gaseous fluid using a motive liquid, to obtain a pressurized mixture of gas and motive liquid; (b2) separation of the pressurized mixture obtained in the preceding step in order to obtain, on the one hand, a compressed gas, and on the other hand, an auxiliary liquid. The invention further relates to devices for this purpose. Application to the production of hydrocarbons.

Abstract: The invention concerns a pumping installation designed for being mounted in an oil well extending from the surface to a layer of oil-bearing rock, comprising a pipe column at the lower end of which is mounted a pump, a joint, mounted in the well around the pipe column and delimiting a chamber at the lower end of the well, in which is arranged a pump. The installation further comprises a hydro-ejector, in the pipe column, including a lower pressure zone opening into the upper end of the chamber.

Abstract: The invention concerns a method for pumping a fluid, for instance an oil effluent derived from a source adjacent to a well, towards an outlet, the well comprising a chamber extending substantially over the whole length of the well, and a pipe column passing through the chamber and communicating with it at one end, and, at an intermediate point on its length with the source. The invention comprises the following steps: filling, up to a predetermine height, the lower end of the chamber and of the pipe column with a first liquid with a density higher than that of the effluent; filling the chamber, between the predetermined height and the outlet, with a second liquid with a density lower than that of the first liquid, and injecting an additional amount of the second liquid in the chamber so as to displace the first liquid and the effluent, in order to bring the effluent up towards the outlet. The invention also concerns a pumping installation.

Abstract: An electric pump including a linear motor consisting of a stator and a moving element driven by the electromagnetic field generated by the stator, and a pump piston driven by the linear motor, is disclosed. The piston is arranged inside the stator of the electric pump and forms the moving element of the linear motor. An oil well facility provided with such an electric pump is also disclosed.

Abstract: System for thermal and/or acoustic insulation of a tube intended, for example, to allow the outflow of hydrocarbons originating from an oil deposit, consisting of a sleeve surrounding the tube over at least a part of its length. According to the invention, the sleeve consists of an aerogel. A method for thermal and/or acoustic insulation of a tube is also described.

Abstract: A facility for an oil well, extending from the surface (12) towards an oil-bearing rock stratum (14), includes a first casing (20) placed in the well and forming a flow way towards the surface for the hydrocarbons originating from the oil-bearing rock stratum (14). According to the invention the well receives a second casing (22) forming a second flow way towards the surface for the hydrocarbons originating from the same rock stratum, the facility additionally including a chamber (51) between the casings (20,22) and the well wall (18), which does not contain any hydrocarbons originating from the rock stratum.

Abstract: Oil-well installation extending from the surface (14) to an oil-bearing rock stratum (16) comprising a tubing (20), arranged in the well and forming a flow channel to the surface for hydrocarbons originating from the oil-bearing rock stratum, a casing (18) delimiting the wall of the well, and a seal (24) arranged at the well bottom between the tubing (20) and the casing (18) so as to form a chamber (26) isolated from the hydrocarbons, the installation furthermore comprising, in the well, a pump (30, 48) and an electric motor (34, 46) which is intended to actuate the pump. According to the invention, the stator (40, 52) of the electric motor (34, 46) is arranged outside the tubing (20) and isolated thereby from the hydrocarbons flowing inside the tubing.