WO1993025798A1 - Procede d'inhibition de la formation d'hydrates de gaz - Google Patents
Procede d'inhibition de la formation d'hydrates de gaz Download PDFInfo
- Publication number
- WO1993025798A1 WO1993025798A1 PCT/EP1993/001519 EP9301519W WO9325798A1 WO 1993025798 A1 WO1993025798 A1 WO 1993025798A1 EP 9301519 W EP9301519 W EP 9301519W WO 9325798 A1 WO9325798 A1 WO 9325798A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vinyl
- pvp
- additive
- pyrrolidone
- water
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/20—Use of additives, e.g. for stabilisation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/003—Additives for gaseous fuels
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/22—Hydrates inhibition by using well treatment fluids containing inhibitors of hydrate formers
Definitions
- This invention relates to a process for inhibiting the formation of gas hydrates in systems containing low-boiling hydrocarbons and water.
- Low-boiling hydrocarbons such as methane, ethane, propane, butane and iso-butane
- water is also present in varying amounts, the mixture of low-boiling hydrocarbons and water (such as present in natural gas), under conditions of elevated pressure and reduced temperature, tends to form hydrate crystals (gas hydrate crystals).
- thermodynamic measures are possible in principle: removal of free water, maintaining elevated temperatures and/or reduced pressures or the addition of melting point depressants
- antifreeze In practice, in most cases the last-mentioned measure is applied. However, the antifreezes, such as the lower alcohols and glycols, have to be added in substantial amounts (of the order of 30 per cent by weight of the water present) to be effective. An additional disadvantage of such amounts is that recovery of the added antifreezes is usually required during further processing of the mixture.
- Plants and poikilothermic animals such as insects and cold-water fish are known to protect themselves from freezing, both by antifreezes such as glycols and by special peptides and glycopeptides (termed Antifreeze Proteins, AFP's and Antifreeze Glycoproteins, AFGP's) which interfere with ice crystal growth (A.L. de Vries, Comp. Biochem. Physiol. 73 1982 627).
- antifreezes such as glycols and by special peptides and glycopeptides (termed Antifreeze Proteins, AFP's and Antifreeze Glycoproteins, AFGP's) which interfere with ice crystal growth (A.L. de Vries, Comp. Biochem. Physiol. 73 1982 627).
- the present applicants found such cold-water fish peptides and glycopeptides also to be effective in interfering with the growth of gas-hydrate crystals. However, their production and use for this purpose are currently considered to be uneconomical.
- Polyvinyl pyrrolidone is a well-known water-soluble polymer, currently used in particular in pharmacy. PVP is known to interfere with the growth of different crystals, such as the crystal growth of several drugs in aqueous suspension (K.H. Zillerand H.H. Ruppert, Pharm. Ind. 52 1990 1017), and also with the growth of ice crystals. However, in suppressing the growth of ice crystals PVP has been noted to be much less effective than the glycoproteins isolated from dialysed blood serum of the antarctic fish Notothenia neglecta (F. Frank et al. Nature 325 1987 146).
- PVP polyethylene glycol
- the invention therefore relates to a method for inhibiting the formation, growth and/or agglomeration of gas hydrate crystals in a mixture containing low-boiling hydrocarbons and water, characterized by adding to the mixture an effective amount of at least one additive selected from the group of polymers and copolymers of N-vinyl-2-pyrrolidone, and mixtures thereof.
- a preferred group of additives according to the invention are the homopolymers of N-vinyl-2-pyrrolidone (PVP). These are available commercially, e.g. from BSA under the trade name K0LID0N, in average molecular weights ranging from about 5000 daltons (K12) or less to about 400000 daltons (K90) and more. In general the present inventors found the lower molecular weight PVP's, especially those of between 5000 and 40000 daltons, to be the more effective in inhibiting the formation of gas hydrate crystals.
- PVP N-vinyl-2-pyrrolidone
- copolymers for use as additives according to the invention which are available commercially, are the copolymers of N-vinyl-2-pyrrolidone with 1-butene, with 1-hexene, with 1-decene, with vinyl chloride, with vinyl acetate, with ethyl acrylate, with 2-ethylhexyl acrylate, and with styrene.
- Copolymers of N-vinyl-2-pyrrolidone with mixtures of the above can also be used.
- the copolymers for use according to the invention will contain at least 30 mol% of the N-vinyl-2-pyrrolidone component.
- the amount of additive according to the invention is generally between 0.05 and 4 wt%, preferably between 0.25 and 1 wt%, based on the amount of water in the hydrocarbon-containing mixture.
- the additives according to the invention can be added to the subject mixture of low-boiling hydrocarbons and water, as their dry powder or.preferably, in concentrated aqueous solution. While the polymers and copolymers according to the invention interfere effectively with the growth of hydrate crystals, it may be advantageous also to interfere with agglomeration of any remaining crystallites and with their adhesion to the wall of the conduit. For this purpose film-formers, which are known to prevent water-wetting of metal surfaces, can be added.
- Typical examples of such film-formers are long-chain alkyl amines, alkyl diamines and imidazolines, optionally in combination with high molecular-weight organic acids.
- film-formers are monovalent, but preferably divalent, salts of long-chain alkarylsulphonic acids. These are subject of the present applicant's EP-A-457375.
- an aqueous solution of tetrahydrofurane (THF) was used as a model for wet gas, since tetrahydrofurane in water is known to form hydrate (structure II) crystals at about the same temperature as wet gas, but already at atmospheric pressure - for example, an 18.9 wt% aqueous solution of THF has a hydrate melting point of 4.3 ⁇ C at atmospheric pressure (S.R. Couch and D.W. Davidson, Can. J. Chem. 49 1971 2691).
- field conditions were simulated in an experimental set-up as schematically shown in Figure 2, comprising a two-liter stirred high-pressure autoclave 11 connected via a gear pump 12 to a coiled copper pipeline 13 of 16 m length and 6 mm internal diameter which is immersed in a thermostatically controlled bath 14.
- the pressure difference between the inlet and outlet of the pipeline is continuously monitored by a differential pressure transmitter 15.
- the autoclave was loaded at 13 °C with 400 ml of demineralised water (in which additives could be dissolved and with 800 ml of Shellsol D60 (trade name) , a mixture of paraffinic and naphthenic hydrocarbons mainly in the C. _ - C. publish range.
- the autoclave was loaded with ethane until the pressure (at 13 °C) within the autoclave was 20 bara.
- the stirred mixture was circulated through the system at a rate of 6.1 liters/hour.
- the temperature of the bath was lowered gradually, at a rate of 5 C C per hour.
- a piece of dry ice solid C0 deliberately was continuously held against the inlet of the coiled pipeline.
- the pressure drop over the coiled pipeline and the temperature of the bath were continuously monitored as a function of time.
- the temperature at which the pressure drop between the inlet and outlet of the coiled pipeline exceeded 1 bar was considered to be the blocking temperature.
- the hydrate- temperature of the mixture which is the temperature below which hydrates will form if no hydrate inhibitor is added, was approximately 10 C C, and the mixture was transported through the pipeline at a temperature of 1 C C.
- PVP K17 was added to the mixture at the upstream side thereof. It was found that during a period of approximately 17 hours after start of transportation through the line no significant pressure drop occurred within the pipeline along the length thereof. Thereafter hydrate formation in the line caused a gradually increasing pressure drop, until complete blocking of the line at approximately 37 hours after start of transportation. If no PVP would have been added to the mixture, hydrate formation would have caused complete blocking of the line within a much shorter period.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procédé d'inhibition de la formation, de la croissance et/ou de l'agglomération de cristaux d'hydrate de gaz dans un mélange contenant des hydrocarbures à faible point d'ébullition et de l'eau, caractérisé par l'addition audit mélange d'une quantité efficace d'au moins un additif sélectionné dans le groupe de polymères et de copolymères de N-vinyle-2-pyrrolidone, et de mélanges de ceux-ci. Un composé filmogène peut également être ajouté facultativement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU43259/93A AU675227B2 (en) | 1992-06-11 | 1993-06-10 | A method for inhibiting gas hydrate formation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92201725.6 | 1992-06-11 | ||
EP92201725 | 1992-06-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993025798A1 true WO1993025798A1 (fr) | 1993-12-23 |
Family
ID=8210684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1993/001519 WO1993025798A1 (fr) | 1992-06-11 | 1993-06-10 | Procede d'inhibition de la formation d'hydrates de gaz |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU675227B2 (fr) |
WO (1) | WO1993025798A1 (fr) |
Cited By (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994012761A1 (fr) * | 1992-11-20 | 1994-06-09 | Colorado School Of Mines | Procede de regulation d'hydrates de clathrate dans des systemes a fluide |
WO1994024413A1 (fr) * | 1993-04-08 | 1994-10-27 | Bp Chemicals Limited | Procede d'inhibition de la formation de solides et melanges utilises dans ce procede |
WO1994025727A1 (fr) * | 1993-05-04 | 1994-11-10 | Bp Exploration Operating Company Limited | Inhibition de l'hydrate |
WO1995019408A1 (fr) * | 1994-01-13 | 1995-07-20 | Bp Exploration Operating Company Limited | Inhibition de formation d'hydrates |
US5460728A (en) * | 1993-12-21 | 1995-10-24 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
WO1995032356A1 (fr) * | 1994-05-25 | 1995-11-30 | Colorado School Of Mines | Additifs et procede de regulation d'hydrates de clathrate dans des systemes a fluides |
WO1996008672A1 (fr) * | 1994-09-15 | 1996-03-21 | Exxon Production Research Company | Procede d'inhibition de la formation d'hydrates |
WO1996008456A1 (fr) * | 1994-09-15 | 1996-03-21 | Exxon Production Reserch Company | Procede empechant la formation d'hydrates |
WO1996029501A1 (fr) * | 1995-03-23 | 1996-09-26 | Bp Exploration Operating Company Limited | Inhibition d'hydrates |
WO1996029502A1 (fr) * | 1995-03-23 | 1996-09-26 | Bp Exploration Operating Company Limited | Inhibiteurs d'hydrates |
WO1996034177A1 (fr) * | 1995-04-25 | 1996-10-31 | Shell Internationale Research Maatschappij B.V. | Procede destine a empecher le bouchage de conduits par des hydrates de gaz |
WO1996037684A1 (fr) * | 1995-05-26 | 1996-11-28 | Nippon Shokubai Co., Ltd. | Inhibiteur d'hydrates de clathrate et procede permettant d'inhiber la formation des hydrates de clathrate dans lequel il est utilise |
GB2301824A (en) * | 1995-10-04 | 1996-12-18 | Exxon Production Research Co | Clathrate hydrate-inhibiting polymers |
GB2301836A (en) * | 1995-06-08 | 1996-12-18 | Exxon Production Research Co | Inhibiting Clathrate hydrate formation |
WO1996041784A1 (fr) * | 1995-06-08 | 1996-12-27 | Exxon Production Research Company | Procede visant a empecher la formation d'hydrates |
WO1996041786A1 (fr) * | 1995-06-08 | 1996-12-27 | Exxon Production Research Company | Procede permettant d'inhiber la formation d'hydrates |
WO1997007320A1 (fr) * | 1995-08-16 | 1997-02-27 | Exxon Production Research Company | Procede de selection d'un polymere destine a inhiber la formation d'hydrates |
US5648575A (en) * | 1995-01-10 | 1997-07-15 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
EP0812977A1 (fr) * | 1996-06-14 | 1997-12-17 | Institut Francais Du Petrole | Méthode pour réduire la tendance à l'agglomération des hydrates dans les effluents de production contenant des huiles paraffiniques |
US5741758A (en) * | 1995-10-13 | 1998-04-21 | Bj Services Company, U.S.A. | Method for controlling gas hydrates in fluid mixtures |
US5841010A (en) * | 1994-09-15 | 1998-11-24 | Exxon Production Research Company | Surface active agents as gas hydrate inhibitors |
AU707765B2 (en) * | 1993-12-21 | 1999-07-22 | Shell Internationale Research Maatschappij B.V. | Method for inhibiting the plugging of conduits by gas hydrates |
US5936040A (en) * | 1995-06-08 | 1999-08-10 | Exxon Production Research Company | Method for inhibiting hydrate formation using maleimide copolymers |
US6015929A (en) * | 1994-09-15 | 2000-01-18 | Exxon Research And Engineering Co. | Gas hydrate anti-agglomerates |
US6025302A (en) * | 1998-05-18 | 2000-02-15 | Bj Services Company | Quaternized polyether amines as gas hydrate inhibitors |
US6028233A (en) * | 1995-06-08 | 2000-02-22 | Exxon Production Research Company | Method for inhibiting hydrate formation |
US6107531A (en) * | 1995-06-08 | 2000-08-22 | Exxonmobil Upstream Research Company | Method for inhibiting hydrate formation |
US6152993A (en) * | 1997-09-09 | 2000-11-28 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
US6194622B1 (en) | 1998-06-10 | 2001-02-27 | Exxonmobil Upstream Research Company | Method for inhibiting hydrate formation |
US6232273B1 (en) | 1995-06-02 | 2001-05-15 | Nippon Shokubai Co., Ltd. | Clathrate hydrate inhibitor and method of inhibiting the formation of clathrate hydrates using it |
US6319971B1 (en) | 1997-05-22 | 2001-11-20 | Rf-Procom A/S | Composition for controlling clathrate hydrates and a method for controlling clathrate hydrate formation |
DE10059816C1 (de) * | 2000-12-01 | 2002-04-18 | Clariant Gmbh | Verwendung von Additiven zur Inhibierung der Gashydratbildung |
DE10122613C1 (de) * | 2001-04-11 | 2002-09-05 | Clariant Gmbh | Additive zur Inhibierung der Gashydratbildung |
WO2002074722A1 (fr) | 2001-03-20 | 2002-09-26 | Isp Investments Inc. | Inhibiteur d'hydrate de gaz |
US6544932B2 (en) * | 1996-11-22 | 2003-04-08 | Clariant Gmbh | Additives for inhibiting gas hydrate formation |
US6596911B2 (en) * | 2000-02-22 | 2003-07-22 | Baker Hughes Incorporation | Composition and method for inhibition of formation of gas hydrates |
DE10163259C1 (de) * | 2001-12-21 | 2003-08-21 | Kuraray Specialities Europe | Additive, Verwendung und Verfahren zur Inhibierung der Gashydratbildung |
DE10163260C1 (de) * | 2001-12-21 | 2003-08-28 | Kuraray Specialities Europe | Additive, Verwendung und Verfahren zur Inhibierung der Gashydratbildung |
WO2004042190A2 (fr) * | 2002-11-06 | 2004-05-21 | Basf Aktiengesellschaft | Copolymerisats de vinyllactame comme inhibiteurs d'hydrates de gaz |
US6905605B2 (en) | 2000-04-07 | 2005-06-14 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
WO2005119004A1 (fr) * | 2004-06-03 | 2005-12-15 | Backer Hughes Incorporated | Additifs pour l'inhibition de la formation d'hydrates dans des fluides gelifies par tensioactifs viscoelastiques |
US7033504B1 (en) | 1999-11-24 | 2006-04-25 | Shell Oil Company | Method for recovering water soluble surfactants |
US7122113B2 (en) | 2001-06-14 | 2006-10-17 | Shell Oil Company | Method for solubilising asphaltenes in a hydrocarbon mixture |
WO2007054225A2 (fr) * | 2005-11-12 | 2007-05-18 | Clariant Produkte (Deutschland) Gmbh | Esters d'acide pyroglutamique a biodegradabilite amelioree |
US7264653B2 (en) | 2003-10-21 | 2007-09-04 | Champion Technologies, Inc. | Methods for inhibiting hydrate blockage in oil and gas pipelines using simple quaternary ammonium and phosphonium compounds |
WO2007107502A1 (fr) | 2006-03-21 | 2007-09-27 | Akzo Nobel N.V. | Additif servant à maintenir la fluidité de fluides contenant des hydrates de gaz |
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EP2031035A1 (fr) | 2007-08-06 | 2009-03-04 | Clariant International Ltd. | Utilisation de polyethylenimines en tant qu'inhibiteurs d'hydrates de gaz ayant une biodégrabilité améliorée |
US7585816B2 (en) | 2003-07-02 | 2009-09-08 | Exxonmobil Upstream Research Company | Method for inhibiting hydrate formation |
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US7893009B2 (en) | 2005-02-12 | 2011-02-22 | Clariant Produkte (Deutschland) Gmbh | Polymers and their production and use as gas hydrate inhibitors |
US7958939B2 (en) | 2006-03-24 | 2011-06-14 | Exxonmobil Upstream Research Co. | Composition and method for producing a pumpable hydrocarbon hydrate slurry at high water-cut |
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WO2016180745A2 (fr) | 2015-05-11 | 2016-11-17 | Akzo Nobel Chemicals International B.V. | Anti-agglomérants azotés servant à maintenir la fluidité de fluides contenant des hydrates de gaz |
US9790104B2 (en) | 2012-02-17 | 2017-10-17 | Hydrafact Limited | Water treatment |
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US11753492B2 (en) | 2019-12-09 | 2023-09-12 | Saudi Arabian Oil Company | Acryloyl based polymers with active end cap as corrosion inhibitors |
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---|---|---|---|---|
CA3214296A1 (fr) * | 2021-07-08 | 2023-01-12 | China Petroleum & Chemical Corporation | Application d'imidazoline naphtenique pour inhiber la formation d'hydrates de gaz naturel et composition en contenant |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1245512A (fr) * | 1956-03-23 | 1960-11-10 | Exxon Research Engineering Co | Produits d'addition sans cendres pour huiles lubrifiantes et combustibles |
FR1258482A (fr) * | 1960-04-20 | 1961-04-14 | Exxon Research Engineering Co | Essences contenant des additifs polymérisés |
US3015546A (en) * | 1958-10-28 | 1962-01-02 | Exxon Research Engineering Co | Gasolines inhibited against the formation of deposits, sludge and varnish |
CA658216A (en) * | 1963-02-19 | Esso Research And Engineering Company | Multi-purpose additive for petroleum fuels | |
FR1390134A (fr) * | 1963-04-27 | 1965-02-19 | Basf Ag | Produits améliorant le point de congélation des combustibles et des carburants |
US3290883A (en) * | 1965-04-29 | 1966-12-13 | Gen Electric | Drag reduction in hydraulic equipment |
US3962110A (en) * | 1970-10-19 | 1976-06-08 | Texaco Inc. | Process and composition for preventing scale build-up |
US4489180A (en) * | 1983-12-12 | 1984-12-18 | Exxon Research And Engineering Co. | Drag reduction agent utilizing water soluble interpolymer complexes |
US4663408A (en) * | 1985-12-30 | 1987-05-05 | Exxon Research And Engineering Company | Tetrapolymers of N-vinyl pyrrolidone/acrylamide/salt of acrylic acid/N-alkyl acrylamide |
US4792412A (en) * | 1982-08-31 | 1988-12-20 | Mobil Oil Corporation | High temperature stable aqueous brine fluids viscosified by polyvinylpyrrolidone |
FR2618876A1 (fr) * | 1987-07-30 | 1989-02-03 | Inst Francais Du Petrole | Procede de traitement et de transport d'un gaz contenant du methane et de l'eau |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4856593A (en) * | 1987-09-21 | 1989-08-15 | Conoco Inc. | Inhibition of hydrate formation |
US5432292A (en) * | 1992-11-20 | 1995-07-11 | Colorado School Of Mines | Method for controlling clathrate hydrates in fluid systems |
US5639925A (en) * | 1992-11-20 | 1997-06-17 | Colorado School Of Mines | Additives and method for controlling clathrate hydrates in fluid systems |
-
1993
- 1993-06-10 WO PCT/EP1993/001519 patent/WO1993025798A1/fr active Application Filing
- 1993-06-10 AU AU43259/93A patent/AU675227B2/en not_active Ceased
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA658216A (en) * | 1963-02-19 | Esso Research And Engineering Company | Multi-purpose additive for petroleum fuels | |
FR1245512A (fr) * | 1956-03-23 | 1960-11-10 | Exxon Research Engineering Co | Produits d'addition sans cendres pour huiles lubrifiantes et combustibles |
US3015546A (en) * | 1958-10-28 | 1962-01-02 | Exxon Research Engineering Co | Gasolines inhibited against the formation of deposits, sludge and varnish |
FR1258482A (fr) * | 1960-04-20 | 1961-04-14 | Exxon Research Engineering Co | Essences contenant des additifs polymérisés |
FR1390134A (fr) * | 1963-04-27 | 1965-02-19 | Basf Ag | Produits améliorant le point de congélation des combustibles et des carburants |
US3290883A (en) * | 1965-04-29 | 1966-12-13 | Gen Electric | Drag reduction in hydraulic equipment |
US3962110A (en) * | 1970-10-19 | 1976-06-08 | Texaco Inc. | Process and composition for preventing scale build-up |
US4792412A (en) * | 1982-08-31 | 1988-12-20 | Mobil Oil Corporation | High temperature stable aqueous brine fluids viscosified by polyvinylpyrrolidone |
US4489180A (en) * | 1983-12-12 | 1984-12-18 | Exxon Research And Engineering Co. | Drag reduction agent utilizing water soluble interpolymer complexes |
US4663408A (en) * | 1985-12-30 | 1987-05-05 | Exxon Research And Engineering Company | Tetrapolymers of N-vinyl pyrrolidone/acrylamide/salt of acrylic acid/N-alkyl acrylamide |
FR2618876A1 (fr) * | 1987-07-30 | 1989-02-03 | Inst Francais Du Petrole | Procede de traitement et de transport d'un gaz contenant du methane et de l'eau |
Cited By (101)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5639925A (en) * | 1992-11-20 | 1997-06-17 | Colorado School Of Mines | Additives and method for controlling clathrate hydrates in fluid systems |
WO1994012761A1 (fr) * | 1992-11-20 | 1994-06-09 | Colorado School Of Mines | Procede de regulation d'hydrates de clathrate dans des systemes a fluide |
US5880319A (en) * | 1992-11-20 | 1999-03-09 | Colorado School Of Mines | Method for controlling clathrate hydrates in fluid systems |
WO1994024413A1 (fr) * | 1993-04-08 | 1994-10-27 | Bp Chemicals Limited | Procede d'inhibition de la formation de solides et melanges utilises dans ce procede |
WO1994025727A1 (fr) * | 1993-05-04 | 1994-11-10 | Bp Exploration Operating Company Limited | Inhibition de l'hydrate |
AU707765B2 (en) * | 1993-12-21 | 1999-07-22 | Shell Internationale Research Maatschappij B.V. | Method for inhibiting the plugging of conduits by gas hydrates |
US5460728A (en) * | 1993-12-21 | 1995-10-24 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
WO1995019408A1 (fr) * | 1994-01-13 | 1995-07-20 | Bp Exploration Operating Company Limited | Inhibition de formation d'hydrates |
GB2307244B (en) * | 1994-05-25 | 1998-12-30 | Colorado School Of Mines | Additives and method for controlling clathrate hydrates in fluid systems |
GB2307244A (en) * | 1994-05-25 | 1997-05-21 | Colorado School Of Mines | Additives and method for controlling clathrate hydrates in fluid systems |
WO1995032356A1 (fr) * | 1994-05-25 | 1995-11-30 | Colorado School Of Mines | Additifs et procede de regulation d'hydrates de clathrate dans des systemes a fluides |
CN1058781C (zh) * | 1994-09-15 | 2000-11-22 | 埃克森生产研究公司 | 抑制水合物形成的方法 |
US6015929A (en) * | 1994-09-15 | 2000-01-18 | Exxon Research And Engineering Co. | Gas hydrate anti-agglomerates |
WO1996008456A1 (fr) * | 1994-09-15 | 1996-03-21 | Exxon Production Reserch Company | Procede empechant la formation d'hydrates |
US5841010A (en) * | 1994-09-15 | 1998-11-24 | Exxon Production Research Company | Surface active agents as gas hydrate inhibitors |
USH1749H (en) * | 1994-09-15 | 1998-09-01 | Exxon Production Research Company | Method for inhibiting hydrate formation |
WO1996008672A1 (fr) * | 1994-09-15 | 1996-03-21 | Exxon Production Research Company | Procede d'inhibition de la formation d'hydrates |
US5600044A (en) * | 1994-09-15 | 1997-02-04 | Exxon Production Research Company | Method for inhibiting hydrate formation |
US5648575A (en) * | 1995-01-10 | 1997-07-15 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
WO1996029502A1 (fr) * | 1995-03-23 | 1996-09-26 | Bp Exploration Operating Company Limited | Inhibiteurs d'hydrates |
AU709772B2 (en) * | 1995-03-23 | 1999-09-09 | Bp Exploration Operating Company Limited | Hydrate inhibition |
WO1996029501A1 (fr) * | 1995-03-23 | 1996-09-26 | Bp Exploration Operating Company Limited | Inhibition d'hydrates |
GB2313841A (en) * | 1995-03-23 | 1997-12-10 | Bp Exploration Operating | Hydrate inhibition |
WO1996034177A1 (fr) * | 1995-04-25 | 1996-10-31 | Shell Internationale Research Maatschappij B.V. | Procede destine a empecher le bouchage de conduits par des hydrates de gaz |
CN1066513C (zh) * | 1995-04-25 | 2001-05-30 | 国际壳牌研究有限公司 | 防止管道堵塞的方法 |
US5879561A (en) * | 1995-04-25 | 1999-03-09 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
WO1996037684A1 (fr) * | 1995-05-26 | 1996-11-28 | Nippon Shokubai Co., Ltd. | Inhibiteur d'hydrates de clathrate et procede permettant d'inhiber la formation des hydrates de clathrate dans lequel il est utilise |
US6232273B1 (en) | 1995-06-02 | 2001-05-15 | Nippon Shokubai Co., Ltd. | Clathrate hydrate inhibitor and method of inhibiting the formation of clathrate hydrates using it |
GB2301836A (en) * | 1995-06-08 | 1996-12-18 | Exxon Production Research Co | Inhibiting Clathrate hydrate formation |
WO1996041784A1 (fr) * | 1995-06-08 | 1996-12-27 | Exxon Production Research Company | Procede visant a empecher la formation d'hydrates |
GB2301836B (en) * | 1995-06-08 | 1997-05-07 | Exxon Production Research Co | A method for inhibiting hydrate formation |
US5936040A (en) * | 1995-06-08 | 1999-08-10 | Exxon Production Research Company | Method for inhibiting hydrate formation using maleimide copolymers |
WO1996041786A1 (fr) * | 1995-06-08 | 1996-12-27 | Exxon Production Research Company | Procede permettant d'inhiber la formation d'hydrates |
US6028233A (en) * | 1995-06-08 | 2000-02-22 | Exxon Production Research Company | Method for inhibiting hydrate formation |
US6107531A (en) * | 1995-06-08 | 2000-08-22 | Exxonmobil Upstream Research Company | Method for inhibiting hydrate formation |
WO1997007320A1 (fr) * | 1995-08-16 | 1997-02-27 | Exxon Production Research Company | Procede de selection d'un polymere destine a inhiber la formation d'hydrates |
GB2301824A (en) * | 1995-10-04 | 1996-12-18 | Exxon Production Research Co | Clathrate hydrate-inhibiting polymers |
US6331508B1 (en) | 1995-10-13 | 2001-12-18 | Bj Service Company, U.S.A. | Method for controlling gas hydrates in fluid mixtures |
US5741758A (en) * | 1995-10-13 | 1998-04-21 | Bj Services Company, U.S.A. | Method for controlling gas hydrates in fluid mixtures |
FR2749774A1 (fr) * | 1996-06-14 | 1997-12-19 | Inst Francais Du Petrole | Methode pour reduire la tendance a l'agglomeration des hydrates dans des effluents de production contenant des huiles paraffiniques |
US5848644A (en) * | 1996-06-14 | 1998-12-15 | Institut Francais Du Petrole | Process for reducing the tendency of hydrates to agglomerate in production effluents containing paraffin oils |
EP0812977A1 (fr) * | 1996-06-14 | 1997-12-17 | Institut Francais Du Petrole | Méthode pour réduire la tendance à l'agglomération des hydrates dans les effluents de production contenant des huiles paraffiniques |
US6544932B2 (en) * | 1996-11-22 | 2003-04-08 | Clariant Gmbh | Additives for inhibiting gas hydrate formation |
US6319971B1 (en) | 1997-05-22 | 2001-11-20 | Rf-Procom A/S | Composition for controlling clathrate hydrates and a method for controlling clathrate hydrate formation |
US6152993A (en) * | 1997-09-09 | 2000-11-28 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
US6214091B1 (en) | 1997-09-09 | 2001-04-10 | Shell Oil Company | Method and compound for inhibiting the plugging of conduits by gas hydrates |
US6025302A (en) * | 1998-05-18 | 2000-02-15 | Bj Services Company | Quaternized polyether amines as gas hydrate inhibitors |
US6194622B1 (en) | 1998-06-10 | 2001-02-27 | Exxonmobil Upstream Research Company | Method for inhibiting hydrate formation |
US7033504B1 (en) | 1999-11-24 | 2006-04-25 | Shell Oil Company | Method for recovering water soluble surfactants |
US6596911B2 (en) * | 2000-02-22 | 2003-07-22 | Baker Hughes Incorporation | Composition and method for inhibition of formation of gas hydrates |
US6905605B2 (en) | 2000-04-07 | 2005-06-14 | Shell Oil Company | Method for inhibiting the plugging of conduits by gas hydrates |
US7297823B2 (en) | 2000-12-01 | 2007-11-20 | Clariant Produkte (Deutschland) Gmbh | Additives for inhibiting the formation of gas hydrates |
DE10059816C1 (de) * | 2000-12-01 | 2002-04-18 | Clariant Gmbh | Verwendung von Additiven zur Inhibierung der Gashydratbildung |
WO2002074722A1 (fr) | 2001-03-20 | 2002-09-26 | Isp Investments Inc. | Inhibiteur d'hydrate de gaz |
DE10122613C1 (de) * | 2001-04-11 | 2002-09-05 | Clariant Gmbh | Additive zur Inhibierung der Gashydratbildung |
US7122113B2 (en) | 2001-06-14 | 2006-10-17 | Shell Oil Company | Method for solubilising asphaltenes in a hydrocarbon mixture |
DE10163259C1 (de) * | 2001-12-21 | 2003-08-21 | Kuraray Specialities Europe | Additive, Verwendung und Verfahren zur Inhibierung der Gashydratbildung |
DE10163260C1 (de) * | 2001-12-21 | 2003-08-28 | Kuraray Specialities Europe | Additive, Verwendung und Verfahren zur Inhibierung der Gashydratbildung |
US7696393B2 (en) | 2002-09-03 | 2010-04-13 | Shell Oil Company | Method and compositions for inhibiting formation of hydrocarbon hydrates |
WO2004042190A2 (fr) * | 2002-11-06 | 2004-05-21 | Basf Aktiengesellschaft | Copolymerisats de vinyllactame comme inhibiteurs d'hydrates de gaz |
WO2004042190A3 (fr) * | 2002-11-06 | 2004-07-08 | Basf Ag | Copolymerisats de vinyllactame comme inhibiteurs d'hydrates de gaz |
US7585816B2 (en) | 2003-07-02 | 2009-09-08 | Exxonmobil Upstream Research Company | Method for inhibiting hydrate formation |
US7264653B2 (en) | 2003-10-21 | 2007-09-04 | Champion Technologies, Inc. | Methods for inhibiting hydrate blockage in oil and gas pipelines using simple quaternary ammonium and phosphonium compounds |
US7381689B2 (en) | 2003-10-21 | 2008-06-03 | Champion Technologies, Inc. | Methods for inhibiting hydrate blockage in oil and gas pipelines using amide compounds |
WO2005119004A1 (fr) * | 2004-06-03 | 2005-12-15 | Backer Hughes Incorporated | Additifs pour l'inhibition de la formation d'hydrates dans des fluides gelifies par tensioactifs viscoelastiques |
US7879767B2 (en) | 2004-06-03 | 2011-02-01 | Baker Hughes Incorporated | Additives for hydrate inhibition in fluids gelled with viscoelastic surfactants |
US7893009B2 (en) | 2005-02-12 | 2011-02-22 | Clariant Produkte (Deutschland) Gmbh | Polymers and their production and use as gas hydrate inhibitors |
WO2007054225A3 (fr) * | 2005-11-12 | 2007-07-19 | Clariant Produkte Deutschland | Esters d'acide pyroglutamique a biodegradabilite amelioree |
WO2007054225A2 (fr) * | 2005-11-12 | 2007-05-18 | Clariant Produkte (Deutschland) Gmbh | Esters d'acide pyroglutamique a biodegradabilite amelioree |
US9452981B2 (en) | 2005-11-12 | 2016-09-27 | Clariant Produkte (Deutschland) Gmbh | Pyroglutamic acid esters with improved biodegradability |
US8735332B2 (en) | 2005-11-12 | 2014-05-27 | Clariant Produkte (Deutschland) Gmbh | Use of pyroglutamic acid esters as gas hydrate inhibitors with improved biodegradability |
NO342499B1 (no) * | 2005-11-12 | 2018-06-04 | Clariant Produkte Deutschland | Anvendelse av pyroglutaminsyreestere som gasshydratinhibitorer |
US8821754B2 (en) | 2006-03-21 | 2014-09-02 | Akzo Nobel N.V. | Additive for preserving the fluidity of fluids containing gas hydrates |
WO2007107502A1 (fr) | 2006-03-21 | 2007-09-27 | Akzo Nobel N.V. | Additif servant à maintenir la fluidité de fluides contenant des hydrates de gaz |
US7958939B2 (en) | 2006-03-24 | 2011-06-14 | Exxonmobil Upstream Research Co. | Composition and method for producing a pumpable hydrocarbon hydrate slurry at high water-cut |
DE102007037016A1 (de) | 2007-08-06 | 2009-02-19 | Clariant International Limited | Verwendung von 1-Alkyl-5-oxo-pyrrolidin-3-carbonsäureestern als Gashydratinhibitoren mit verbesserter biologischer Abbaubarkeit |
EP2022781A1 (fr) | 2007-08-06 | 2009-02-11 | Clariant International Ltd. | Esters d'acide 1-alkyl-5-oxo-pyrrolidine-3-carboxylique ayant une biodégrabilité améliorée |
US8067651B2 (en) | 2007-08-06 | 2011-11-29 | Clariant Finance (Bvi) Limited | 1-alkyl-5-oxopyrrolidine-3-carboxylic esters with improved biodegradability |
EP2031035A1 (fr) | 2007-08-06 | 2009-03-04 | Clariant International Ltd. | Utilisation de polyethylenimines en tant qu'inhibiteurs d'hydrates de gaz ayant une biodégrabilité améliorée |
DE102007037017A1 (de) | 2007-08-06 | 2009-02-19 | Clariant International Ltd. | 1-Alkyl-5-oxo-pyrrolidin-3-carbonsäureester mit verbesserter biologischer Abbaubarkeit |
EP2028247A1 (fr) | 2007-08-06 | 2009-02-25 | Clariant International Ltd. | Utilisation d'esters d'acide de carbone 1-alkyl-5-oxo-pyrrolidine-3 en tant qu'inhibiteurs d'hydrates de gaz ayant une biodégrabilité améliorée |
US8722589B2 (en) | 2007-08-06 | 2014-05-13 | Clariant Finance (Bvi) Limited | Use of 1-alkyl-5-oxopyrrolidine-3-carboxylic esters as gas hydrate inhibitors with improved biodegradability |
US8920542B2 (en) | 2009-06-25 | 2014-12-30 | Clariant Finance (Bvi) Limited | Additives for inhibiting gas hydrate formation |
DE102009030339A1 (de) | 2009-06-25 | 2011-01-05 | Clariant International Ltd. | Additive zur Inhibierung der Gashydratbildung |
WO2011150997A1 (fr) | 2010-06-04 | 2011-12-08 | Clariant International Ltd | Additifs destinés à inhiber la formation d'hydrate de gaz |
US8920543B2 (en) | 2010-06-04 | 2014-12-30 | Clariant Finance (Bvi) Limited | Additives for inhibition of gas hydrate formation |
DE102010022759A1 (de) | 2010-06-04 | 2011-12-08 | Clariant International Ltd. | Additive zur Inhibierung der Gashydratbildung |
RU2481375C1 (ru) * | 2011-12-08 | 2013-05-10 | Открытое акционерное общество "Газпром" | Ингибитор гидратообразования кинетического действия |
US9790104B2 (en) | 2012-02-17 | 2017-10-17 | Hydrafact Limited | Water treatment |
WO2016180745A2 (fr) | 2015-05-11 | 2016-11-17 | Akzo Nobel Chemicals International B.V. | Anti-agglomérants azotés servant à maintenir la fluidité de fluides contenant des hydrates de gaz |
US10876033B2 (en) | 2015-05-11 | 2020-12-29 | Nouryon Chemicals International B.V. | Nitrogen-containing anti-agglomerants for preserving the fluidity of fluids containing gas hydrates |
US10550215B2 (en) | 2016-05-06 | 2020-02-04 | Saudi Arabian Oil Company | Acryloyl-based copolymers, terpolymers, and use as hydrate inhibitors |
US10189986B2 (en) | 2016-05-06 | 2019-01-29 | Saudi Arabian Oil Company | Acrylamide-based copolymers, terpolymers, and use as hydrate inhibitors |
US11060042B2 (en) | 2016-05-06 | 2021-07-13 | Saudi Arabian Oil Company | Succinimide-based copolymers and use as hydrate inhibitors |
US11059926B2 (en) | 2016-05-06 | 2021-07-13 | Saudi Arabian Oil Company | Acryloyl-based copolymers, terpolymers, and use as hydrate inhibitors |
US11225416B2 (en) | 2019-11-26 | 2022-01-18 | Saudi Arabian Oil Company | Dry gel synthesis of nano-sized ZSM-5 |
US11148124B2 (en) | 2019-12-04 | 2021-10-19 | Saudi Arabian Oil Company | Hierarchical zeolite Y and nano-sized zeolite beta composite |
US11247196B2 (en) | 2019-12-04 | 2022-02-15 | Saudi Arabian Oil Company | Zeolite with encapsulated platinum |
US11753492B2 (en) | 2019-12-09 | 2023-09-12 | Saudi Arabian Oil Company | Acryloyl based polymers with active end cap as corrosion inhibitors |
CN111116797A (zh) * | 2019-12-24 | 2020-05-08 | 中国科学院广州能源研究所 | 一种新型的天然气水合物抑制剂 |
CN111116797B (zh) * | 2019-12-24 | 2021-09-14 | 中国科学院广州能源研究所 | 一种天然气水合物抑制剂 |
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