Abstract: A catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on a support containing silica, alumina and at least one simple spinel MAl2O4 or mixed spinel MxM?(1-x)Al2O4) which is or is not partial, wherein M and M? are separate metals selected from the group formed by magnesium, copper, cobalt, nickel, tin, zinc, lithium, calcium, caesium, sodium, potassium, iron and manganese, and wherein x is between 0 and 1, the values 0 and 1 being themselves excluded, characterised in that said active phase further comprises boron, the boron content being between 0.001% and 0.5% by weight with respect to the total weight of the catalyst, the value 0.5 being itself excluded.

Abstract: A catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on a support containing silica, alumina and at least one simple spinel MAl2O4 or mixed spinel MxM?(1?x)Al2O4) which is or is not partial, wherein M and M? are separate metals selected from the group formed by magnesium, copper, cobalt, nickel, tin, zinc, lithium, calcium, caesium, sodium, potassium, iron and manganese, and wherein x is between 0 and 1, the values 0 and 1 being themselves excluded, characterised in that said active phase further comprises boron, the boron content being between 0.001% and 0.5% by weight with respect to the total weight of the catalyst, the value 0.5 being itself excluded.

Abstract: The present invention describes a Fischer-Tropsch process for synthesis of hydrocarbons comprising contacting a charge comprising synthesis gas under Fischer-Tropsch synthesis operating conditions with at least one catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on an oxides support comprising alumina, silica and phosphorus, said oxides support not containing any spinel phase. The catalyst has an improved hydrothermal and mechanical resistance in a Fischer-Tropsch process while improving its catalytic performances.

Abstract: The present invention describes a catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on an oxides support comprising alumina, silica, a spinel and phosphorus. It also concerns the process for preparation of said catalyst and its use in a Fischer-Tropsch process. The catalyst has an improved hydrothermal and mechanical resistance in a Fischer-Tropsch process while improving its catalytic performances.

Abstract: The present invention describes a Fischer-Tropsch process for synthesis of hydrocarbons comprising contacting a charge comprising synthesis gas under Fischer-Tropsch synthesis operating conditions with at least one catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on an oxides support comprising alumina, silica and phosphorus, said oxides support not containing any spinel phase. The catalyst has an improved hydrothermal and mechanical resistance in a Fischer-Tropsch process while improving its catalytic performances.

Abstract: The present invention describes a catalyst containing an active phase comprising at least one metal of group VIIIB selected from cobalt, nickel, ruthenium and iron deposited on an oxides support comprising alumina, silica, a spinel and phosphorus. It also concerns the process for preparation of said catalyst and its use in a Fischer-Tropsch process. The catalyst has an improved hydrothermal and mechanical resistance in a Fischer-Tropsch process while improving its catalytic performances.

Abstract: A process for preparing a composition comprising a mixture with ester and amine function in the form of ester-amines, amines, salts of amines, monoglycerides and diglycerides all derived from monomeric, dimeric, trimeric, and/or tetrameric fatty acids contained in polymerized polyunsaturated oil comprising: (a) polymerizing a polyunsaturated vegetable or animal oil to form a polymerized oil, (b) treating the polymerized oil with water vapor, and (c) reacting the polymerized oil with an excess of at least one compound containing at least one hydroxyl function and at least one tertiary amine function, optionally in the presence of a catalyst. Said methods further comprise adding the compositions to an oil effluent as dispersing agents for hydrates.

Abstract: In order to manufacture a composition mainly containing compounds with ester and amide functions, in particular in the form of ester-amides, as well as compounds with amine functions, such as ester-amines, the salts of amines, monoglycerides and diglycerides, formed from monomeric, dimeric, trimeric and/or tetrameric fatty acids contained in a polymerized polyunsaturated oil, a process is implemented which comprises the following stages: a) use (or preparation) of a polymerized oil by polymerization of a polyunsaturated vegetable or animal oil; b) treatment of said polymerized oil by entrainment with water vapor; and c) reaction of the polymerized oil thus treated with an excess of at least one aminoalcohol, in the presence or not of a catalyst. This composition can be used as an emulsifying and dispersing surfactant, in particular as an additive for dispersing hydrates in oil effluents.

Abstract: In order to improve the transport of oilfield effluents comprising water, a gas and possibly a liquid hydrocarbon phase under thermodynamic conditions which can lead to the formation of hydrates, a formulation containing at least two additives, one of which behaves as a hydrate crystal nucleation agent, is added to the effluent to be transported.

Abstract: The following are described herein: a composition that consists of a mixture that comprises at least amides, amines, ester-amides, ester-amines, amine salts and monoglycerides, that are all derived from monomeric, dimeric, trimeric and/or tetrameric fatty acids; a process for the production of said composition which comprises the transamidification reaction of a polyunsaturated vegetable oil that is polymerized thermally, with an excess of at least one amino alcohol, which may or may not be in the presence of a catalyst; and the uses of this composition particularly as an emulsifying agent that allow it, depending on the nature of the oil, to form an oil-in-water or water-in-oil emulsion, as a solid-dispersing agent, or as an agent for the stabilization of foams in a liquid or an emulsion.

Abstract: A process for slowing the growth and/or agglomeration of hydrates in a fluid comprising water and gases by adding at least one essentially water-soluble polyoxyalkylene glycol macromer or at least one essentially water-soluble polymer containing a single macromer or a plurality of different macromer units of polyoxyalkylene glycol or a mixture of essentially water-soluble macromers and/or polymacromers. It is also possible to both retard the formation of hydrates and to substantially slow their growth and limit their agglomeration during crystallization by combining polyoxyalkylene glycol macromer type structures with kinetic additive type structures which are known to inhibit hydrate formation.

Abstract: The inhibiting or retarding hydrate formation, growth and/or agglomeration in a fluid comprising water and gases, is accomplished by addition of at least one hydrosoluble homopolymer or copolymer derived from at least one nitrogen-containing monomer selected from cationic monomers, for example those containing at least one quaternary ammonium moiety, amphoteric monomers, for example those containing at least one quaternary ammonium moiety and at least one carboxylate or sulphonate moiety, and various neutral monomers, said hydrosoluble homopolymer or copolymer being neutral or anionic, or consisting of a polyampholyte. The homopolymer, copolymer or mixture of polymers optionally mixed with an alcohol is generally incorporated into the fluid to be treated at a concentration of 0.05% to 5% by weight with respect to the quantity of water in the medium.

Abstract: A method of transporting hydrates suspended in a fluid comprising water, a gas and a liquid hydrocarbon is described in which at least one non-ionic amphiphilic composition obtained by reacting at least one polymerized unsaturated vegetable oil with an aminoalcohol is incorporated into the fluid. The non-ionic amphiphilic composition is generally introduced in a concentration of 0.1% to 5% by weight with respect to the water.

Abstract: The invention concerns a process for reducing the tendency of hydrates in a fluid comprising at least water, a gas and a paraffin oil to agglomerate, by addition of a mixture of at least two organosoluble additives, namely at least one polyisobutene-polyethyleneglycol block copolymer and at least one copolymer of an alkyl (meth)acrylate and a nitrogen-containing monomer. These organosoluble copolymers are generally introduced at an overall concentration of 0.05% to 5% by weight with respect to the water present in the medium.

Abstract: A process is described for retarding or inhibiting the growth and/or aggregation of hydrates in production effluents comprising water and a gas under thermodynamic conditions in which hydrates can form, characterized in that a low concentration (0.05% to 5% by weight with respect to the water) of water-soluble copolymer containing hydrophobic groups is incorporated into the effluent.

Abstract: The invention concerns a process for inhibiting or retarding hydrate formation, growth and/or agglomeration in a fluid comprising water and gases, by addition of a hydrosoluble copolymer which does not contain a heterocycle but contains at least one sulphonate group.The copolymer is generally introduced at a concentration of 0.05% to 5% by weight with respect to the quantity of water in the medium.The copolymer can also be mixed with an alcohol (monoalcohol or polyol). In this case, the proportions are generally 0.5% to 20% by weight of alcohol with respect to the water content, for 0.05% to 3% by weight of copolymer with respect to the quantity of water content of the medium.