US2927078A - Prevention of paraffin deposition - Google Patents
Prevention of paraffin deposition Download PDFInfo
- Publication number
- US2927078A US2927078A US636853A US63685357A US2927078A US 2927078 A US2927078 A US 2927078A US 636853 A US636853 A US 636853A US 63685357 A US63685357 A US 63685357A US 2927078 A US2927078 A US 2927078A
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- waxy
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- petroleum
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- deposits
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Classifications
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- 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
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
-
- 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/106—Liquid carbonaceous fuels containing additives mixtures of inorganic compounds with organic macromolecular compounds
-
- 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/12—Inorganic compounds
- C10L1/1233—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof
- C10L1/125—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof water
-
- 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/192—Macromolecular compounds
- C10L1/198—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid
- C10L1/1985—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid polyethers, e.g. di- polygylcols and derivatives; ethers - esters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S507/00—Earth boring, well treating, and oil field chemistry
- Y10S507/927—Well cleaning fluid
- Y10S507/929—Cleaning organic contaminant
- Y10S507/931—Organic contaminant is paraffinic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
Definitions
- This invention relates to the transportation of waxy fluids through conduits. More particularly, this invention relates to the transportation of waxy crudes or waxy petroleum products and the like or other liquids which tend to deposit waxy materials on the interior surfaces of conduits transporting the same, such as crude pipe lines, well flow lines, petroleum product pipe lines and conduits and the like.
- Another object of this invention is to provide an improved and relatively simple method for inhibiting the deposition and/or build-up of waxy deposits within pipe lines and the like employed in the transportation of waxy crudes and waxy petroleum products.
- Another object of this invention is to provide a method for treating transportation conduits and pipelines in such a manner so as to inhibit the deposition of waxy materials thereon when the thus-treated conduits or pipe lines are employed in the transportation of waxy crudes and the like.
- Still another object of this invention is to provide a conduit specifically treated so that wax deposition thereon is inhibited.
- Wax separation or wax precipitation from waxy liquids is not prevented but rather wax deposition upon the surface of the conduit or pipe line in contact with these waxy liquids is inhibited, thereby tending to avoid the build-up of a waxy layer within said conduits.
- waxy materials which otherwise would ice build-up deposits within a conduit or pipe line carrying the same, tend to be continuously moved along or trans ported with the waxy liquids within the conduit.
- alkyl aryl polyether alcohol particularly suitable in the practice of this invention is a nonyl phenol-ethylene.
- Triton X-lOO is a non io nic
- liquid nonyl phenol-ethylene oxide adduct containing ap- liquid nonyl phenol-ethylene oxide adduct containing ap-.
- alkyl aryl polyether alcohol is manufactured and sold by the Jefferson Chemical Company under the trade name Jefferson Surfonic N 95.
- This material like Triton X-lOO, is also an alkyl aryl polyether alcohol, namely, a nonyl phenol-ethylene oxide adduct.
- Other non-ionic water-soluble alkyl aryl polyether alcohols are also suitable in the practice of this invention.
- These other materials like Triton X-lOO and Jefferson Surfonic N-95, might be made from an alkyl phenol wherein the alkyl group contains from 5-12 carbon atoms and an alkylene oxide wherein the alkylene pro portion thereof contains from 2-5 carbon atoms.
- alkyl aryl polyether alcohol employed in the practice of this invention should be effective to inhibit wax deposition.
- a suitable effective amount is in the range 0.00050% to 0.05000% by volume of theresulting admixture, preferably in the range 0.00l00%- 0.01000% by volume, more or less.
- the initial flow rate through the test apparatus was 900- In, one
- Still another well was treated in substantially the same manner as set forth hereinabove.
- This well had a history of producing relatively large amounts of paraflin or wax in the crude. After a period of at least six months the flow line of this last Well was broken open and also found to be substantially free and clean of paraflin.
- non-ionic surfactant material alkyl aryl polyether alcohol can be added to the waxy fluids undergoing treatment in a substantially continuous or intermittent manner.
- conduit which is particularly useful for the transportation of waxy :rudes.
- a conduit prepared or treated in accordance with this invention exhibits a property of inhibiting the build-up of waxy deposits thereon.
- This conduit is prepared in accordance with the teaching of this invention by pretreatiug the conduit, such as a ferruginous pipe or steel pipe, after cleaning to remove waxy deposits there'- from by caustic or other suitable means, with a relatively :oncentrated solution of a non-ionic alkyl aryl polyether alcohol, such as an aqueous solution containing the de- ;ired alkyl aryl polyether alcohol in an amount' in the range 0.05%-10.0% by volume, usually'in the r'zinge ).1l.0% by volume.
- the thus-treated conduit can then an employed for the transportation of waxy crudes'and' :he like, the treatment serving to inhibit the deposition )f wax thereon when employed in the transportation of waxypetroleum liquids and the like.
- free Water should )e present within the conduit or pipe line being treated :o inhibit wax deposition.
- the water may be present or ntroduced' within the conduit or pipe line as an aqueous film wetting the surfaces thereof, or as free water extraneously added, if necessary, to the crude oil or petroleurn product being transported.
- the water may be introduced into the conduit in the form of an aqueous solution of the alkyl aryl polyether alcohol.
- the amount of water present need only be suflicient to yield free, undissolved water or an aqueous solution of the alkyl aryl polyether alcohol Within the conduit being treated, at least in an amount greater than that sufiicient to saturate the crude oil or petroleum product being transported within the conduit.
- a method of inhibiting the deposition of waxy materials upon a surface in contact'with a petroleum fluid which tends to deposit said waxy materials on said surface which comprises initially wetting said surface with an aqueous solution of a nonyl phenol-ethylene oxide adduct prior to contacting said surface with said petroleum fluid, said solution containing said adduct in an amount in the range 0.05 %10.0% by vol.
- nonyl phenol-ethylene oxide adduct has an ethylene oxide to nonyl phenol mol ratio of about 10: 1.
- a method of inhibiting the deposition of waxy materials on the interior surface of a conduit carrying a waxy, water-containing crude oil which tends to deposit a layer of waxy materials on the interior of said surface which comprises during the flow of said crude oil through said conduit introducing into said conduit an amount of a nonyl phenol-ethylene oxide adduct sufiicient to inhibit the deposition of said waxy materials on the interior surface of said conduit, 7 said amount of said adduct being in the range 0.00050%-0.05000% by vol. based on the resulting admixture.
Description
United ttes Patent 2,927,078 PREVENTION OF PARAFFIN DEPOSITION Charles C. Nathan, Bellaire, Tex., assignor to Texaco Inc., a corporation of Delaware No Drawing. Application January 29, 1957 Serial No. 636,853
8 Claims. (Cl. 2528.'3)
This invention relates to the transportation of waxy fluids through conduits. More particularly, this invention relates to the transportation of waxy crudes or waxy petroleum products and the like or other liquids which tend to deposit waxy materials on the interior surfaces of conduits transporting the same, such as crude pipe lines, well flow lines, petroleum product pipe lines and conduits and the like.
Various methods have been proposed for eliminating waxy deposits within the interior of pipe lines and the like. One of these methods includes introducing rock salt or similar water-soluble solid abrasive material into the pipe line during the transportation of waxy liquds therethrough to abrade or wear away the waxy deposits from the walls thereof. This method, however, is objectionable for a number of reasons, one of which is that the solid particulate material introduced thereinto might cause malfunctioning of the valves and other apparatus associated with the pipe line.
Another objection to the methods proposed heretofore is that these methods only are directed to the elimination of the symptoms of the trouble (removal of wax deposits) and do not eliminate or directly attack the basic cause (build-up of wax deposits). J
Accordingly, it is an object of this invention to provide a method for inhibiting the laying down and/or buildup of waxy deposits within transportation lines or conduits employed in the transportation of fluids, such as waxy crudes and waxy petroleum products, which'tend to deposit and/or build up layers of waxy materials on the surfaces of the conduits in contact with said fluids.
Another object of this invention is to provide an improved and relatively simple method for inhibiting the deposition and/or build-up of waxy deposits within pipe lines and the like employed in the transportation of waxy crudes and waxy petroleum products. I
Another object of this invention is to provide a method for treating transportation conduits and pipelines in such a manner so as to inhibit the deposition of waxy materials thereon when the thus-treated conduits or pipe lines are employed in the transportation of waxy crudes and the like.
Still another object of this invention is to provide a conduit specifically treated so that wax deposition thereon is inhibited.
How these and other objects of this invention are achieved will become apparent with reference to the accompanying disclosure. In at least one embodiment of the practice of this invention at least one of the foregoing objects will be achieved.
In accordance with the present invention Wax separation or wax precipitation from waxy liquids, such as waxy crudes and waxy petroleum products stored and/ or transported within a conduit or pipe line and the like, is not prevented but rather wax deposition upon the surface of the conduit or pipe line in contact with these waxy liquids is inhibited, thereby tending to avoid the build-up of a waxy layer within said conduits. In the practice of this invention those waxy materials which otherwise would ice build-up deposits within a conduit or pipe line carrying the same, tend to be continuously moved along or trans ported with the waxy liquids within the conduit. The
foregoing is accomplished in the practice of this invention by introducing into the pipe line or conduit em ployed for the transportation and/or movement of waxy liquids an efiective amount of a non-ionic alkyl aryl poly-l ether alcohol. Benefits of the practice of this invention are also obtainable by pro-treating a conduit, pipe line,
well flow or crude gathering line with a surface active,
- waxy liquids.
An alkyl aryl polyether alcohol particularly suitable in the practice of this invention is a nonyl phenol-ethylene.
oxide adduct sold under the trade name Triton X-lOO by Rohm & Haas Company. Triton X-lOO is a non io nic,
liquid nonyl phenol-ethylene oxide adduct containing ap-.
proximately 10 mols of ethylene oxide per mol of nonyl phenol. This material is a transparent, pale, amber,
viscous liquid, slightly hydroscopic and water-soluble' Another suitable alkyl aryl polyether alcohol is manufactured and sold by the Jefferson Chemical Company under the trade name Jefferson Surfonic N 95. This material, like Triton X-lOO, is also an alkyl aryl polyether alcohol, namely, a nonyl phenol-ethylene oxide adduct. Other non-ionic water-soluble alkyl aryl polyether alcohols are also suitable in the practice of this invention. These other materials, like Triton X-lOO and Jefferson Surfonic N-95, might be made from an alkyl phenol wherein the alkyl group contains from 5-12 carbon atoms and an alkylene oxide wherein the alkylene pro portion thereof contains from 2-5 carbon atoms.
The amount of alkyl aryl polyether alcohol employed in the practice of this invention should be effective to inhibit wax deposition. A suitable effective amount is in the range 0.00050% to 0.05000% by volume of theresulting admixture, preferably in the range 0.00l00%- 0.01000% by volume, more or less.
The following experiments are indicative of the prac-. tice of this invention. A Texas crude was weathered to remove the more volatile hydrocarbon constituents therefrom. Paraflin wax was'then dissolved in the weathered crude in an amount to yield a hydrocarbon fluid containing' 3% by weight paraflin. The paraffin containing crude was then pumped through chilled pipes. series of tests, a so-called continuous method, 'a constant pressure was maintained on the test system. In
another series of tests, a so-called slug flow method, the same constant pressure was maintained. throughout the test save that every half hour the test pressure wasdoubled for about one minute. Tests were made both in the presence and in the absence of the wax deposition inhibiting surfactant agent, namely, the alkyl aryl poly-, Set forth'in accompanying ether alcohol (Triton X-lO). Table I are the times required for the flow through the test apparatus to cease due to the plugging of the test flow path within the test apparatus caused by wax deposition.
The initial flow rate through the test apparatus was 900- In, one
As the test data in Table I indicates, wax deposition or build-up of waxy layers within the test conduits was greatly inhibited by introducing into the waxy test fluid an alkyl aryl polyether alcohol, such as Triton X-lOO.
Further, in order to definitely prove the advantages of the practice of this invention actual field trials were carried out. The field trials were concerned with the flow lines of a producing well. The test well chosen was a well which had previously required paraflin cutting every two days. Previous to the test the well produced substantially none or only a negligible amount of water. Prior to the test the well flow line was steam cleaned, washed with a caustic (NaOH) solution and then opened at each end and found to be free of paraffin. Following these preparations gallons of Triton X100 were mixed with 20 barrels of water to yield an aqueous solution containing an alkyl aryl polyether alcohol in an amount in the range 0.1-1% by volume, actually 0.6% by voltime. This solution was pumped through the flow line to treat the flow line, actually a steel pipe. The well was then put back on production and treated with a pint of Triton X-lOO through a lubricator each day for at least 90 days. During this treatment no other means of paraflin control was used on the well.
After three months the flow line was broken open in several places and upon inspection was found to be clean and free of any parafiin deposits.
Other field experiments with actual producing wells were then carried out in view of the marked success of this first field experiment. These additional experiments were carried out on two other wells. One of these wells produced only a slight amount of water, 0.015.0% vol., whereas the other'well produced a substantial amount of water, 5.040.0% vol. or more. The flow lines from these wells were similarly treated as set forth hereinabove. Again, after three months the flow lines from these other two wells were broken open and found to be substantially clean and free of paraffin deposits.
Still another well was treated in substantially the same manner as set forth hereinabove. This well had a history of producing relatively large amounts of paraflin or wax in the crude. After a period of at least six months the flow line of this last Well was broken open and also found to be substantially free and clean of paraflin.
As indicated hereinabove, in the practice of this invention the non-ionic surfactant material alkyl aryl polyether alcohol can be added to the waxy fluids undergoing treatment in a substantially continuous or intermittent manner.
Further, as indicated hereinabove, there has also been provided by the practice of this invention a conduit which is particularly useful for the transportation of waxy :rudes. A conduit prepared or treated in accordance with this invention exhibits a property of inhibiting the build-up of waxy deposits thereon. This conduit is prepared in accordance with the teaching of this invention by pretreatiug the conduit, such as a ferruginous pipe or steel pipe, after cleaning to remove waxy deposits there'- from by caustic or other suitable means, with a relatively :oncentrated solution of a non-ionic alkyl aryl polyether alcohol, such as an aqueous solution containing the de- ;ired alkyl aryl polyether alcohol in an amount' in the range 0.05%-10.0% by volume, usually'in the r'zinge ).1l.0% by volume. The thus-treated conduit can then an employed for the transportation of waxy crudes'and' :he like, the treatment serving to inhibit the deposition )f wax thereon when employed in the transportation of waxypetroleum liquids and the like.
In the practice of this invention free Water should )e present within the conduit or pipe line being treated :o inhibit wax deposition. The water may be present or ntroduced' within the conduit or pipe line as an aqueous film wetting the surfaces thereof, or as free water extraneously added, if necessary, to the crude oil or petroleurn product being transported. The water may be introduced into the conduit in the form of an aqueous solution of the alkyl aryl polyether alcohol. The amount of water present need only be suflicient to yield free, undissolved water or an aqueous solution of the alkyl aryl polyether alcohol Within the conduit being treated, at least in an amount greater than that sufiicient to saturate the crude oil or petroleum product being transported within the conduit.
As will be apparent to those skilled in the art many modifications, substitutions and alterations are possible in the practice of this invention without departing from the spirit or scope thereof.
I claim:
1. in the transportation of petroleum through a conduit wherein the petroleum contains waxy materials which tend to build up objectionable deposits of said waxy materials upon the surface of said conduit in contact with said petroleum, a method of inhibiting the build up of said deposits on the surface of said conduit by introducing into said conduit into admixture with said petroleum a minor amount of a nonyl phenol-ethylene oxide adduct in the presence of free water, said amount of said adduct being in the range 0.00050%0.05000% by vol. based on said admixture.
2. A method in accordance with claim 1 wherein said petroleum is crude oil.
3. A method in accordance with claim 1 wherein said adduct is added in an amount to comprise 0.00100% 0.01000% by volume of said admixture.
4. A method of inhibiting the deposition of waxy materials upon a surface in contact'with a petroleum fluid which tends to deposit said waxy materials on said surface which comprises initially wetting said surface with an aqueous solution of a nonyl phenol-ethylene oxide adduct prior to contacting said surface with said petroleum fluid, said solution containing said adduct in an amount in the range 0.05 %10.0% by vol.
5. A method in accordance with claim 4 wherein said nonyl phenol-ethylene oxide adduct has an ethylene oxide to nonyl phenol mol ratio of about 10: 1.
6. A method of inhibiting the deposition of waxy materials on the interior surface of a conduit carrying a waxy, water-containing crude oil which tends to deposit a layer of waxy materials on the interior of said surface which comprises during the flow of said crude oil through said conduit introducing into said conduit an amount of a nonyl phenol-ethylene oxide adduct sufiicient to inhibit the deposition of said waxy materials on the interior surface of said conduit, 7 said amount of said adduct being in the range 0.00050%-0.05000% by vol. based on the resulting admixture.
7. A method in accordance with claim 6 wherein said adduct is continuously introduced into said conduit into admixture with said crude oil therein.
8. A method in accordance with claim 6 wherein said adduct is intermittently introduced into said conduit into admixture with said crude oil therein.
References Cited'in' the file of this patent UNITED STATES PATENTS 1,382,337 Bellis June 21, 1921 2,602,778 Snyder et al. July 8, 1952 2,753,939 Carpenter et al. July 10; 1956 2,817,635 Goldman et a1. Dec. 24,1957 2,818,079 Garrison Dec. 31, 1957 OTHER' REFERENCES McCutcheon: Synthetic Detergents From Soap and Sanitary Chemicals, vol. 25, October 1949 (page 50).
Claims (1)
1. IN THE TRANSPORTATION OF PETROLEUM THROUGH A CONDUIT WHEREIN THE PETROLEUM CONTAINS WAXY MATERIALS WHICH TEND TO BUILD UP OBJECTIONABLE DEPOSITS OF SAID WAXY MATERIALS UPON THE SURFACE OF SAID CONDUIT IN CONTACT WITH SAID PETROLEUM, A METHOD OF INHIBITING THE BUILD UP OF SAID DEPOSITS ON THE SURFACE OF SAID CONDUIT BY INTRODUCING INTO SAID CONDUIT INTO ADMIXTURE WITH SAID PETROLEUM A MINOR AMOUNT OF A NONYL PHENOYL-ETHYLENE OXIDE ADDUCT IN THE PRESENCE OF FREE WATER, SAID AMOUNT OF SAID ADDUCT BEING IN THE RANGE 0.00050%-0.05000% BY VOL. BASED ON SAID ADMIXTURE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US636853A US2927078A (en) | 1957-01-29 | 1957-01-29 | Prevention of paraffin deposition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US636853A US2927078A (en) | 1957-01-29 | 1957-01-29 | Prevention of paraffin deposition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2927078A true US2927078A (en) | 1960-03-01 |
Family
ID=24553608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US636853A Expired - Lifetime US2927078A (en) | 1957-01-29 | 1957-01-29 | Prevention of paraffin deposition |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2927078A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3067134A (en) * | 1960-04-28 | 1962-12-04 | Dow Chemical Co | Inhibition of deposition of hydrocarbonaceous solids from oil |
| US3096777A (en) * | 1960-04-28 | 1963-07-09 | Dow Chemical Co | Inhibition of deposition of hydrocarbonaceous solids from oil |
| US3162601A (en) * | 1962-01-10 | 1964-12-22 | Pan American Petroleum Corp | Paraffin removal and prevention |
| US3241614A (en) * | 1963-07-08 | 1966-03-22 | Socony Mobil Oil Co Inc | Cleaning of wellbores |
| US3303121A (en) * | 1964-07-01 | 1967-02-07 | Exxon Research Engineering Co | Additives for maintaining a dense dispersion of crystallizable material in countercurrent contact with an immiscible coolant |
| US3355315A (en) * | 1962-09-27 | 1967-11-28 | Shell Oil Co | Process for treating oily surfaces with polyepoxide compositions |
| US3395757A (en) * | 1964-01-16 | 1968-08-06 | Electro Chem Corp | Method and composition for removing and inhibiting paraffin deposition |
| US3437146A (en) * | 1968-01-11 | 1969-04-08 | Midwest Chem & Processing Co I | Method of removing paraffin from a well with heated solvent |
| US3481870A (en) * | 1964-09-28 | 1969-12-02 | Petrolite Corp | Composition and method for inhibiting the formation of in and removing from oil wells and pipelines deposits of paraffin and paraffinlike deposits |
| US3693720A (en) * | 1971-01-29 | 1972-09-26 | Exxon Research Engineering Co | Crude oil recovery method using a polymeric wax inhibitor |
| US4216076A (en) * | 1979-07-16 | 1980-08-05 | Nl Industries, Inc. | Antifoulant additives for hydrocarbon streams |
| US4668408A (en) * | 1984-06-04 | 1987-05-26 | Conoco Inc. | Composition and method for treatment of wellbores and well formations containing paraffin |
| US4751187A (en) * | 1985-04-15 | 1988-06-14 | Exxon Chemical Patents Inc. | Chromatographic method for determining fouling tendency of liquid hydrocarbons |
| US4752587A (en) * | 1985-04-15 | 1988-06-21 | Exxon Chemical Patents Inc. | Chromatographic method for determining fouling tendency of liquid hydrocarbons |
| US6206103B1 (en) * | 1998-08-27 | 2001-03-27 | Jacam Chemicals L.L.C. | Pipeline treatment composites |
| US6213214B1 (en) * | 1998-08-27 | 2001-04-10 | Jacam Chemicals L.L.C. | Pipeline treatment composites |
| US6344431B1 (en) * | 1991-12-30 | 2002-02-05 | Von Tapavicza Stephan | Use of selected inhibitors against the formation of solid organo-based incrustations from fluid hydrocarbon mixtures |
| US20140145006A1 (en) * | 2010-03-24 | 2014-05-29 | Whirlpool Corporation | Flexible wick as water delivery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1382337A (en) * | 1919-03-13 | 1921-06-21 | Thomas H Brown | Method of cleaning oil-wells |
| US2602778A (en) * | 1949-03-10 | 1952-07-08 | Ernest F Snyder | Method and composition for treating wells |
| US2753939A (en) * | 1954-03-15 | 1956-07-10 | Union Oil Co | Removal of waxy sludges from pipelines and oil wells |
| US2817635A (en) * | 1954-07-27 | 1957-12-24 | Texas Co | Prevention of paraffin deposition and plugging |
| US2818079A (en) * | 1954-02-23 | 1957-12-31 | Texaco Development Corp | Prevention of paraffin deposition |
-
1957
- 1957-01-29 US US636853A patent/US2927078A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1382337A (en) * | 1919-03-13 | 1921-06-21 | Thomas H Brown | Method of cleaning oil-wells |
| US2602778A (en) * | 1949-03-10 | 1952-07-08 | Ernest F Snyder | Method and composition for treating wells |
| US2818079A (en) * | 1954-02-23 | 1957-12-31 | Texaco Development Corp | Prevention of paraffin deposition |
| US2753939A (en) * | 1954-03-15 | 1956-07-10 | Union Oil Co | Removal of waxy sludges from pipelines and oil wells |
| US2817635A (en) * | 1954-07-27 | 1957-12-24 | Texas Co | Prevention of paraffin deposition and plugging |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3067134A (en) * | 1960-04-28 | 1962-12-04 | Dow Chemical Co | Inhibition of deposition of hydrocarbonaceous solids from oil |
| US3096777A (en) * | 1960-04-28 | 1963-07-09 | Dow Chemical Co | Inhibition of deposition of hydrocarbonaceous solids from oil |
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