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6093862 |
Process for slowing the growth and/or agglomeration and possibly retarding the formation of hydrates in a production effluent
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...
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6082118 |
Storage and transport of gas hydrates as a slurry suspenion under metastable conditions
A suitable slurry composition allows gas hydrates to be stored or transported under metastable conditions. The slurry includes gas hydrate particles and a carrier liquid for the gas hydrate...
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6080704 |
Glycols as gas hydrate inhibitors in drilling, drill-in, and completion fluids
The present invention provides a method for suppressing the formation of hydrates during drilling operations under conditions that are conducive to hydrate formation comprising using a water based...
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6076278 |
Methods of drying pipelines
The present invention provides improved methods of drying pipelines containing water which are to transport hydrate forming gaseous fluids. The methods basically comprise flowing a liquid which...
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6028236 |
Process for slowing the growth and/or agglomeration of hydrates in a production effluent
The process for slowing the growth and/or agglomeration of hydrates in a fluid comprising water and gases comprises adding gas hydrate growth and/or agglomeration inhibitors comprising an...
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6028235 |
Gas hydrate regassification method and apparatus using steam or other heated gas or liquid
A method and apparatus for safely, conveniently, and inexpensively liberating gas from gas hydrates includes the use of a device, provided adjacent to or in the bulk gas hydrates, for exposing the...
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6028234 |
Process for making gas hydrates
The present invention provides a process for continuously producing clathrate hydrate. This process includes comprising the steps of: (a) pressurizing a hydrate-forming gas to an elevated...
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6025302 |
Quaternized polyether amines as gas hydrate inhibitors
New compositions and methods for inhibiting the formation and/or growth of gas hydrates are described. The compositions are generally polyether ammonium compounds of the formula: [R'R'R"N--(CHRCH...
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6015929 |
Gas hydrate anti-agglomerates
This invention is directed toward a method for inhibiting the formation (nucleation, growth and agglomeration) of clathrate hydrates. The method comprises adding into a mixture of hydrate forming...
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5998681 |
Process for preventing the formation of a solid phase from hydrocarbons in a fluid
A process for preventing the formation of a solid phase from hydrocarbons and water in a fluid is disclosed. A physical disturbance is transmitted to the fluid intermittently in time to prevent the...
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5981816 |
Method for inhibiting or retarding hydrate formation or agglomeration in a production effluent
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...
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5964093 |
Gas hydrate storage reservoir
A gas hydrate storage reservoir includes at least one insulated wall defining an opening and a sunlight permeable top covering the opening. A gas-tight, gas hydrate storage cavity is defined within...
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5958844 |
Method of transporting hydrates suspended in production effluents
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...
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5950732 |
System and method for hydrate recovery
A system for recovering liquid hydrocarbons from hydrates on an ocean floor includes a vessel, a positioning subsystem coupled to the vessel for holding the vessel in a desired location over a...
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5900516 |
Method for predetermining a polymer for inhibiting hydrate formation
A method for inhibiting the formation and/or agglomeration of clathrate hydrates in a petroleum fluid stream containing water is disclosed. The disclosed method uses predetermined inhibitors having...
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5880319 |
Method for controlling clathrate hydrates in fluid systems
Discussed is a process for preventing clathrate hydrate masses from detrimentally impeding the possible flow of a fluid susceptible to clathrate hydrate formation. The process is particularly...
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5877361 |
Process for recycling a dispersing additive used for the transportation of a condensate gas or of an oil with associated gas in the presence of hydrates
A process for transporting a fluid in a pipe under conditions where hydrates may form. In the process, the pipe fluid contains at least one of a gaseous hydrocarbon or liquid hydrocarbon and water...
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5877362 |
Method for producing diphenylmethane
A method for producing diphenylmethane from 1,1-diphenylethane with a high yield and selectivity, wherein the 1,1-diphenylethane is reacted with hydrogen and/or water.
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5841010 |
Surface active agents as gas hydrate inhibitors
This invention is directed toward a method for inhibiting the formation (nucleation, growth and agglomeration) of clathrate hydrates. The method comprises adding into a mixture comprising hydrate...
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5817898 |
Process for inhibiting or retarding the formation, growth and/or aggregation of hydrates in production effluents
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...
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H001749 |
Method for inhibiting hydrate formation
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid...
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5789635 |
Method for inhibiting or retarding hydrate formation, growth and/or agglomeration
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...
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5744665 |
Maleimide copolymers and method for inhibiting hydrate formation
Novel maleimide copolymers have at least two monomeric units, a maleimide unit and a vinyl unit having a pendant group, the pendant group having two to twenty-one carbon atoms, at least one...
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5723524 |
Method for preventing or retarding the formation of gas hydrates
A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a...
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5713416 |
Methods of decomposing gas hydrates
The present invention provides methods of decomposing gas hydrates in subsea or subterranean wells, the equipment associated with the wells and in subterranean reservoirs containing gas hydrates....
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5660603 |
Process for separating selected components from multi-component natural gas streams
A process for separating components of gas mixtures which have different hydrate forming characteristics which uses an aqueous liquid to absorb one of the gases preferentially by attaining...
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5639925 |
Additives and method for controlling clathrate hydrates in fluid systems
Discussed is a process for preventing clathrate hydrate masses from detrimentally impeding the possible flow of a fluid susceptible to clathrate hydrate formation. The process is particularly...
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5536893 |
Method for production of gas hydrates for transportation and storage
Method for the production of gas hydrates for storage and transportation of hydrate forming gases. The gas is pressurized and cooled, whereupon the gas (1b) is supplied to a vessel (6), to which...
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5502266 |
Method of separating well fluids produced from a gas condensate reservoir
The present invention deals with separating well fluids produced from a gas condensate reservoir into a condensate phase and a gas phase. The invention provides combining two stage separation, a...
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5473904 |
Method and apparatus for generating, transporting and dissociating gas hydrates
Methods and apparatus for generating, transporting and dissociating gas hydrates are disclosed. The preferred apparatus includes a mobile tank initially containing liquid water. Compressed...
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5434323 |
Method for reducing the agglomeration tendency of hydrates in production effluents
The invention relates to a process for reducing the agglomeration tendency of hydrates within a fluid containing water and gas by adding a nonionic, amphiphilic compound obtained by reacting at...
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5426258 |
Process for reducing the agglomeration tendency of hydrates in the production effluent
A description is given of a process for reducing the agglomeration tendency of hydrates within a fluid incorporating at least water and hydrocarbons, liable to form hydrates, under conditions where...
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5331105 |
Method for inhibiting hydrate formation
A method for inhibiting or retarding gas hydrate formation comprises adding a solution of a compound of formula: ##STR1## wherein R=OH, OCH 3 , OC 2 H 5 , NHNH 2 or H R'=NH 2 or NH 3 + ...
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5276248 |
Process for the storage and transportation of liquid hydrocarbons
The present invention relates to the use of hydrocarbon-rich gels as a safe storage or transportation form for liquid hydrocarbons and to a process for the safe storage and safe transportion of...
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5244878 |
Process for delaying the formation and/or reducing the agglomeration tendency of hydrates
A process for delaying the formation and/or reducing the agglomeration tendency of hydrates in conditions under which a hydrate may be formed, these hydrates being formed from water and gas. The...
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5139621 |
Azeotropic distillation process for recovery of diamondoid compounds from hydrocarbon streams
An azeotropic distillation method for separating diamondoids from a near-boiling solvent. The method is particularly useful for recovering diamondoids extracted from a produced natural gas stream...
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5055178 |
Process for extraction of water mixed with a liquid fluid
The invention relates to a process for extracting water mixed with a liquid fluid. The process is characterized in particular by carrying out the following steps: forming a dispersion of...
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4966635 |
Method of making a compound cable
The invention relates to a compound cable, such as an aluminum cable, an aluminum alloy cable, aluminum cable steel reinforced or an aluminum alloy cable steel reinforced with reduced audible noise...
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4920752 |
Apparatus and process for storing hydrate-forming gaseous hydrocarbons
The apparatus for storing a frozen hydrate includes a reservoir which is filled with frozen granulated hydrate. Heat for decomposing the hydrate is obtained from water contained in a water tank. In...
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4670159 |
Process for obtaining purified water from wet sludges and slurries of solid materials
The invention relates to a process for obtaining purified water from wet sludges and slurries of solid materials by treating these materials with a clathrate forming agent at a temperature above...
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4463219 |
Compound cable
The invention relates to a compound cable, such as an aluminum cable, an aluminum alloy cable, aluminum cable steel reinforced or an aluminum alloy cable steel reinforced with reduced audible noise...
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3975167 |
Transportation of natural gas as a hydrate
A method and apparatus is described for transporting a natural gas in the form of a hydrate. The method utilizes the pressure and temperature conditions of a submerged vessel to facilitate the...
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3857686 |
GLYCOL-BUTYROLACTONE MIXTURES
The low temperature viscosity, freeze point depression and hydrocarbon hydrate formation depression characteristics of glycols are improved by replacing some of the glycol with butyrolactone. The...
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3856492 |
HYDRATE FORMING IN WATER DESALINATION
An improved process of water desalinization and in particular a method of producing potable water from sea water by a hydration process using a heat-exchange liquid which is immiscible in water and...
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3834456 |
AQUEOUS ORGANIC HEAT-SINK FLUIDS
This invention comprises aqueous organic hydrate compositions each of which melts at an invariant temperature and has a large latent heat of fusion associated with its liquid-solid phase change...
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3824767 |
DEMISTOR
Demisting of a flowing gas stream under superatmospheric pressure is facilitated by chilling the gas in a liquid separation zone by means of a heat exchanger. To provide a cooling fluid which is...
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3633338 |
GAS METHOD AND APPARATUS FOR DRYING
An improved method and apparatus for drying a gas stream by stagewise injecting and removing streams of drying agents into and from said gas stream. The drying agent streams flow generally...
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3514274 |
TRANSPORTATION OF NATURAL GAS AS A HYDRATE
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3505211 |
SEPARATION OF HYDROCARBONS BY TYPE II HYDRATE FORMATION
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3465055 |
XYLENE SEPARATION PROCESS
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