Abstract: An installation is provided for bringing into production hydrocarbon deposits with reinjection of effluents into the deposit or into the well or wells and a process for using this installation. Said installation comprises at least one sealed casing whose base communicates with the deposit; at least one sealing plug disposed in the lower part of the casing and forming a capacity; at least one duct for either injecting or removing a pressurized gas; a condensate injection pipe passing through the capacity and opening into the base of the casing beyond said plug; a production pipe passing through said capacity and possibly through said plug, this pipe communicating with the inner volume of the casing downstream of the plug, as well as with said capacity through a valving system.

Abstract: The invention provides a safety system comprising in the gas flow chain, between the liquid entrainment source and the nose of the flare or of the vent-hole, at least one capacity such as a flare foot tank (1) having at least one overflow column (4) opening below a liquid level (5,6), for example the sea, at a predetermined distance from its tapping (11) to said capacity. It further comprises means (7) for avoiding, should liquid overflow into the overflow column (4), the retention and entrapping of gases in the overflowed liquid or below said liquid.

Abstract: A safety system for eliminating the risk of liquids, rather than gases, being carried to a torch nose-piece or to a vent hole, during burning or dispersion of the gases associated with the production or treatment of hydrocarbons, particularly on off-shore installations. The gas flow line is connected to a storage volume or capacity, such as a torch foot tank. An overflow column is also connected to the gas flow line, and discharges below a liquid level, such as for example the sea, at a distance from the connection to the overflow column.

Abstract: Safety system designed to eliminate liquids entrained or condensed, and to limit the heat radiation and the intensity of the noises received in the flaring or dispersion of gases from the production, processing and transportation of crude hydrocarbons, and elaborated on land or offshore.The system according to the invention involves a chamber 6 such as a flare-base flask connected to at least one flare stack which includes: a back-pressure device 11 and a tip 5 or an orifice for venting to the atmosphere, and means to pulverize into a mist any drops of liquid remaining in the gas flow, and to insure, rapidly, an intimate mixture of the gas with the ambient air.This system can be installed on land, at sea, on any type of fixed or floating support.

Abstract: A system involving at least one well equipped with an elevated or sub-sea production head, and at least one pipeline collecting the effluent from the production head leading to an effluent phase separation unit. The system comprises, in addition, a tube in the form of a U-tube connected to the unit and dipping into the sea to a predetermined depth; the exit in the sea of this U-tube can open into a balancing column that protects the air-sea interface from fluctuations due to the state of the sea. The invention also makes it possible to regulate the input pressure into the installations at a value which is preferably close to atmospheric pressure.

Abstract: A process to protect oil production installations from heat radiation given off by the flame of a gas-burning flare. In said process, a heat-shield is installed a short distance below the flare nozzle, to protect installations from at least part of the heat radiated by the flare flame.