Patent Description:
There is a method, which involves producing a fine-grained polymer that is soluble in carbonaceous liquids. The polymer is synthesized by (co) polymerization of higher α-olefins under the action of a Ziegler-Natta catalyst. The (co)polymer of higher α-olefins used is a casting polymerization product. A fine dispersion of the polymer is obtained by thermal re-precipitation of the polymer in a liquid that is nonsolvent for the polymer at room temperature and capable of dissolving it at a higher temperature (see <CIT> dtd.

The disadvantages of this method for producing a polymer are low commodity form productive capacity, significant energy costs, loss of the spatial structure when a polymer is dissolved at high temperatures, the need for increased dosing of the agent prepared in this way to preserve optimal efficiency.

There is a method of producing a non-aqueous suspension reducing the drag of hydrocarbons in pipelines (see <CIT>), which method involves forming a heat stable, non-aqueous suspension of a solid hydrocarbon soluble polyolefin friction-reducing agent formed from olefines capable of reducing drag in hydrocarbon flowing through conduits, comprising: (a) finely dividing (low temperature) said solid polyolefin in the presence of a partitioning agent to provide a free-flowing polyalphaolefin material coated with said partitioning agent, (b) dispersing the coated polyalphaolefin particles in a substantially non-aqueous suspending medium selected from the group consisting of alcohols containing (<<NUM> carbon atoms), glycols containing (<<NUM> carbon atoms) and dipropylene glycol methyl ether, tripropylene glycol methyl ether, tetrapropylene glycol methyl ether or glycol ethyl ethers, wherein the partitioning agent is a fatty acid wax. Mixtures of simple glycol ethers can be used as suspending agents.

<CIT> discloses a processes for producing polymeric drag reducing agents in a finely divided particulate form based on poly-alpha-olefins, a separating agent, a glycol or glycol ether and a mono-alcohol.

The most similar method by its nature and achieved technical result is a method of producing an agent for reducing hydrodynamic resistance of a hydrocarbon stream (see <CIT>), which is a stabilized powdered high-molecular poly-alpha-olefin. The method involves polymerization of higher alpha-olefins in a medium of fluorinated organic compounds using a titanium-magnesium catalyst, modified with an electron-donor compound, followed by extraction of powdered polyalphaolefin and stabilization of latter by adding an anti-agglomerating agent. Electron-donor compound is glycol ethers, phthalic acid esters. Synthesis is carried out at a given ratio of components of the system. Agent for reducing hydrodynamic resistance is characterized by component weight ratio, %: poly-alpha-olefin <NUM>-<NUM> %, adhesion reducing powder <NUM>-<NUM> %.

The disadvantage of this method and its analogs is the low energy efficiency of the method since there is the polymerization process interruption in case of reaching an average conversion of <NUM>-<NUM>%, the addition of a dispersion medium, including an anti-agglomerating agent, decantation of the polyalphaolefin suspension, washing of the (co)polymer suspension using filter materials, vacuum drying at a temperature of <NUM>-<NUM> to remove unreacted monomer and residual halogenous organic solvents. The prepared material cannot be used to inject liquid hydrocarbons transported through a pipeline into the flow without a carrier fluid.

The essential difference is the use of a finely dispersed polymer powder with particle size from <NUM> to <NUM>, and its treatment with auxiliary materials from the group of monofunctional heteroatomic organic compounds, preferably higher fatty alcohols, and bifunctional heteroatomic organic compounds, preferably glycol derivatives, with a carbon skeleton value from <NUM> to <NUM> units with the following ratio of the components, wt%:.

The product prepared in this way has satisfactory mechanical properties and can be used for injection of a hydrocarbon fluid transported through a pipeline using an apparatus for injection of powder polymer materials.

The object of the invention is to prepare a reagent (drag reducing agent) containing a great amount of an active base to reduce the hydrodynamic drag of the flow of liquid hydrocarbons, which reagent can be dosed as a powder.

The technical result of the invention is to prepare a product, which has a <NUM> wt% active substance that is ultra-high molecular weight polyalphaolefin, which is stable and can be injected into the pipeline for transportation of oil or gas condensate under high pressure using any powder injection apparatus, which makes it possible to reduce the drag of the flow of pumped oil or gas condensate, as well as a to reduce the cost of transporting oil and gas condensate.

The object and the technical result are achieved by preparing a reagent for reducing the hydrodynamic drag of a turbulent flow of liquid hydrocarbons in pipelines that is a drag reducing agent with a great amount of an active base, at least <NUM> wt% polymer content, by mixing a polymer that has the properties of reducing the hydrodynamic drag of the turbulent flow of liquid hydrocarbons <NUM> - <NUM> microns of size prepared according to any known method, with solvents that do not dissolve it, subject to the following ratio of the components, wt%:.

The polymer is mixed with polymer non-dissolving solvents, preferably using any polymer powder mixing equipment.

In case of the specific embodiment, the polymer powder is mixed with a mixture of glycol with carbon atoms from <NUM> to <NUM> and fatty alcohol with carbon atoms from <NUM> to <NUM> in the ratio of polymer powder/mixture of glycol and fatty alcohol: <NUM> parts by weight/<NUM> parts by weight.

The product prepared according to the described method is preferably injected into the flow of hydrocarbon fluid transported through the pipeline using the injection apparatus that mechanically moves the product through the screw auger or screw feeder, for example, a screw extruder for polymeric materials, either directly into the flow of a hydrocarbon fluid or into an intermediate container for mixing the material with the liquid of the flow and by flowing the prepared mixture into the main flow of the pipeline.

This section describes the main embodiment of the invention, which, however, does not limit other possible embodiments explicitly described in the application materials and apparent for a person skilled in the art.

The method for preparation of a reagent reducing the hydrodynamic drag of a turbulent flow of liquid hydrocarbons in pipelines is realized according to the following main procedure.

This method includes the use of a primary polymer reducing the hydrodynamic drag of the flow of liquid hydrocarbons, which is prepared, for example, according to a method described in patent <CIT>, journal No. <NUM>), in which polymer (UHMPAO) with a molecular weight of <NUM>·<NUM><NUM>-<NUM>·<NUM><NUM> a. , molecular weight distribution less than <NUM>, conversion above <NUM> wt % is prepared, which makes it possible to reduce grinding related energy costs, for example, in liquid nitrogen at a temperature not above minus <NUM> and not below minus <NUM> deg. Celsius, in the process of preparation of dry polymer dispersions with a concentration of more than <NUM> wt% in a mixture with polymer non-dissolving solvents for drag reducing agents, protect the polymer against the oxidative degradation during storage, reduce significantly the cost price of the reagents reducing the hydrodynamic drag of oil and oil products prepared according to the proposed method and transported through pipelines.

The polymer blocks prepared according to patent <CIT> are ground to the required size using proper cryogenic grinding equipment, and then mixed with polymer non-dissolving solvents, preparing a product with a polymer content of at least <NUM> wt%, which is fed into the flow of the hydrocarbon fluid pumped through the pipeline using an adapted injection apparatus for polymer powders.

Alpha-olefins C6-C14, preferably hex-<NUM>-ene, oct-<NUM>-ene, dec-<NUM>-ene, dodec-<NUM>-ene, tetradec-<NUM>-ene, and mixtures thereof, even more preferably hex-<NUM>-ene, dec-<NUM>-ene, dodec-<NUM>-ene, and mixtures thereof containing at least <NUM> wt% of basic alpha-olefin, are used as monomers to prepare the polymer blocks.

The mixtures of a monofunctional heteroatomic organic compound (MHOC) and a bifunctional heteroatomic organic compound (BHOC) are used as a polymer non-dissolving solvent, in which organic compounds containing oxygen, nitrogen as a heteroatom can be used as the MHOC that is isomers of propanol, butanol, pentanol, hexanol, heptanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, isomers of tripropylamine, tributylamine, tripentylamine, trihexylamine, triheptylamine, trioctylamine, trinonylamine, tridecylamine. triundecylamine, tridodecylamine, tritridecylamine, tritetradecylamine, tripentadecylamine, trihexadecylamine; organic compounds containing oxygen, nitrogen, sulfur, phosphorus as a heteroatom can be used as the BHOC that is tripropyl phosphate, tributyl phosphate, tripentyl phosphate, propylene glycol, butylene glycol, butyl cellosolve, hexylene glycol, ethyl cellosolve, texanol, diethylene glycol, triethylene glycol, isophorone, morpholine, dioxane, dimethyl sulphoxide, dimethylformamide.

For mechanical mixing of the polymer powder with polymer non-dissolving solvents, any mixers for polymer powders can be used, for example, Pallmann Maschinenfabrik GmbH & Co KG (Germany), OOO Sibprommash (the Russian Federation, Novosibirsk).

For dosing a product containing great, not less than <NUM> wt% of polymer, injection apparatus can be used that mechanically move the product through a screw auger or screw feeder made by Kinematica AG (Switzerland), IKA-WERKE GmbH & Co. KG (Germany), Krauss Maffei Berstorff AG (Germany) extruders or analogs.

The method for preparation of a reagent for reducing the hydrodynamic drag of a flow of liquid hydrocarbons in pipelines is illustrated by the embodiments given below, but not limited to them.

Heat a three-necked <NUM>-ml flask equipped with an argon-vacuum line and a mechanical stirrer in a vacuum for <NUM>-<NUM> minutes. Place in a flask cooled with ice-water to <NUM>-<NUM> ° C, <NUM> (<NUM>) of perfluoromethylcyclohexane, <NUM> (<NUM>) of hexene-<NUM>, <NUM> of TIBA (<NUM>), and <NUM> the catalyst prepared according to the following procedure: place <NUM> (<NUM> mmol) of magnesium ethylate, <NUM> of absolute toluene, <NUM> of titanium tetrachloride and <NUM> (<NUM>, <NUM> mmol) of dimethyl ether of <NUM>- diethylpropanediol-<NUM>,<NUM> in a <NUM> flask with a magnetic stirrer in a stream of argon. Heat the mixture to <NUM> (external temperature in the bath) for <NUM> hours with stirring. Then decant the liquid layer, wash the precipitate with <NUM>×<NUM> of toluene at <NUM>. After washing, place <NUM> of absolute toluene, <NUM> of titanium tetrachloride in the flask and heat the mixture to <NUM> for <NUM> hours with stirring. Next, wash the precipitate with <NUM>×<NUM> of <NUM>/<NUM> petroleum ether at <NUM>, and suspend the precipitate in <NUM> of <NUM>/<NUM> petroleum ether. <NUM> of a suspension of a catalyst with a titanium concentration of <NUM> mol/L is prepared.

Stir the mixture for <NUM> hours and then warm to room temperature (~<NUM>) and add a suspension of <NUM> of calcium stearate in <NUM> of butyl cellosolve. Stir the mixture vigorously for <NUM> minutes, stop the stirring, and decant the perfluoromethylcyclohexane precipitate in <NUM> minutes. Distill off the residues of perfluoromethylcyclohexane and monomer in vacuo. Then wash the product twice with <NUM> of acetone, filter, and dry. The mass of the prepared polymer powder is <NUM> (<NUM>% conversion). The mass fraction of polymer is <NUM>%.

The polymer is prepared according to the following procedure of <CIT>. Load hex-<NUM>-en in the amount of <NUM> wt%, dec-<NUM>-ene in the amount of <NUM> wt%, decalin with a purity of not less than <NUM> wt% in the amount of <NUM> wt%, cyclooctadecane with a purity of not less than <NUM> in the amount of <NUM> wt% in a reactor with a jacket, stirrer, thermocouple, pressure gauge, the supply of nitrogen gas with a purity of <NUM> wt%. Cool the mixture in the reactor in a stream of nitrogen to a temperature of plus <NUM> ± <NUM> by stirring with a stirrer and supplying a coolant to the reactor jacket. Then, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminium chloride and triisobutylaluminum with a mass ratio of <NUM>:<NUM> in the amount of <NUM> wt% (at <NUM> wt% each) and the catalyst is titanium trichloride in the amount of <NUM> wt% in the form of a suspension with a concentration of <NUM> wt% in heptane. Stir the contents of the reactor, keeping the temperature in the range from plus <NUM> to plus <NUM>, for <NUM>. Next, discharge the reaction mass in a stream of nitrogen into sealed gas-tight containers with polyethylene liners so that the height of the mass layer does not exceed <NUM> or discharge into similar polymer containers, hermetically seal, and keep the containers at a temperature of <NUM>±<NUM> for at least <NUM> days without access to an air atmosphere. Crush the resulting polymer blocks subsequently using a cascade of knife mills into particles of <NUM> ± <NUM>, <NUM>±<NUM>, and <NUM>±<NUM> in size. Carry out the last grinding in a medium consisting of liquid nitrogen over <NUM> wt% calcium stearate. Add to the prepared polymer powder, polymer non-solving solvent consisting of a mixture of isopropanol, ethylene glycol in a ratio of <NUM>:<NUM> by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and oil products in pipelines - a stable fine dispersion with a polymer content of <NUM>±<NUM> wt%.

The polymer is prepared according to the following procedure of <CIT>. Load hex-<NUM>-ene in the amount of <NUM> wt%, tetradecene-<NUM> in the amount of <NUM> wt%, dodecane with a purity of not less than <NUM> wt% in the amount of <NUM> wt%, cyclooctane with a purity of not less than <NUM> wt% in the amount of <NUM> wt% in a reactor with a jacket, stirrer, thermocouple, pressure gauge, the supply of nitrogen gas with a purity of <NUM> wt%. Cool the mixture in the reactor to a temperature of plus <NUM> ± <NUM> by stirring with a stirrer and applying cold coolant to the jacket of the reactor. Then, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminium chloride and triisobutylaluminum with a mass ratio of <NUM>:<NUM> in the amount of <NUM> wt% (at <NUM> wt% each) and the catalyst is titanium trichloride in the amount of <NUM> wt% in the form of a suspension with a concentration of <NUM> wt% in heptane. Stir the contents of the reactor, keeping the temperature in the range from plus <NUM> to plus <NUM> for <NUM>. Next, unload the reaction mass in a stream of nitrogen into sealed gas-tight containers with polyethylene liners so that the height of the mass layer does not exceed <NUM>, or hermetically seal and hold similar in size polymer containers at a temperature of <NUM> ± <NUM> for at least <NUM> days without access to an air atmosphere. Crush the resulting polymer blocks subsequently using a cascade of knife mills into particles of <NUM>±<NUM>, <NUM>±<NUM>, and <NUM>±<NUM> in size. Carry out the last grinding in a medium consisting of liquid nitrogen over <NUM> wt% calcium stearate. Add to the prepared polymer powder, polymer non-solving solvent consisting of a mixture of butyl cellosolve and ethylene glycol in the ratio of <NUM>:<NUM> by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and oil products in pipelines - a stable fine dispersion with a polymer content <NUM>±<NUM> wt%.

The polymer is prepared according to the following procedure of <CIT>. Load hex-<NUM>-en in the amount of <NUM> wt%, decen-<NUM> in the amount of <NUM> wt%, decalin with a purity of not less than <NUM> wt% in the amount of <NUM> wt%, cyclooctadecylcyclooctadecane with a purity of not less than <NUM> wt% in the amount of <NUM> wt% in a reactor with a jacket, stirrer, thermocouple, pressure gauge, the supply of nitrogen gas with a purity of <NUM> wt%. Cool the mixture in the reactor to a temperature of plus <NUM>±<NUM> by stirring with a stirrer and applying cold coolant to the jacket of the reactor. Then, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminium chloride and triisobutylaluminum with a mass ratio of <NUM>:<NUM> in the amount of <NUM> wt% (<NUM> wt% and <NUM> wt%, respectively) and the catalyst is titanium trichloride in the amount of <NUM> wt% in the form of a suspension with a concentration of <NUM> wt% in heptane. Stir the contents of the reactor, keeping the temperature in the range from plus <NUM> to plus <NUM> for <NUM>. Next, unload the reaction mass in a stream of nitrogen into sealed gas-tight containers with polyethylene liners so that the height of the mass layer does not exceed <NUM>, or seal similar in size polymer containers hermetically and hold at a temperature of <NUM> ± <NUM> for at least <NUM> days without access to an air atmosphere. Crush the resulting polymer blocks subsequently using a cascade of knife mills into particles of <NUM>±<NUM>, <NUM>±<NUM>, and <NUM>±<NUM> in size. Carry out the last grinding in a medium consisting of liquid nitrogen over <NUM> wt% calcium stearate. Add to the prepared polymer powder, polymer non-solving solvent consisting of a mixture of ethyl cellosolve and propylene glycol in the ratio of <NUM>:<NUM> by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and oil products in pipelines - a stable fine dispersion with a polymer content <NUM>±<NUM> wt%.

The polymer is prepared according to the following procedure of <CIT>. Load hex-<NUM>-en in the amount of <NUM> wt%, dec-<NUM>-ene in the amount of <NUM> wt%, decane with a purity of not less than <NUM> wt% in the amount of <NUM> wt%, cyclohexadecane with a purity of not less than <NUM> wt% in the amount of <NUM> wt% in a reactor with a jacket, stirrer, thermocouple, pressure gauge, the supply of nitrogen gas with a purity of <NUM> wt%. Cool the mixture in the reactor to a temperature of plus <NUM>±<NUM> by stirring with a stirrer and applying cold coolant to the jacket of the reactor. Then, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminium chloride and triisobutylaluminum with a mass ratio of <NUM>:<NUM> in the amount of <NUM> wt% (<NUM> wt% and <NUM> wt%, respectively), and the catalyst is titanium trichloride in the amount of <NUM> wt% in the form of a suspension with a concentration of <NUM> wt% in heptane. Stir the contents of the reactor, keeping the temperature in the range from plus <NUM> to plus <NUM>, for <NUM>. Then discharge the reaction mass in a stream of nitrogen into sealed gas-tight containers with polyethylene liners so that the height of the mass layer does not exceed <NUM> or discharge into similar polymer containers, hermetically seal, and keep the containers at a temperature of <NUM>±<NUM> for at least <NUM> days without access to an air atmosphere. Crush the resulting polymer blocks subsequently using a cascade of knife mills into particles of <NUM>±<NUM>, <NUM>±<NUM>, and <NUM>±<NUM> in size. Carry out the last grinding in a medium consisting of liquid nitrogen over <NUM> wt% calcium stearate. Add to the prepared polymer powder, polymer non-solving solvent consisting of a mixture of octanol and ethylene glycol in the ratio of <NUM>:<NUM> by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and oil products in pipelines - a stable fine dispersion with a polymer content <NUM>±<NUM> wt%.

The polymer is prepared according to the following procedure of <CIT>. Load octene-<NUM> in the amount of <NUM> wt%, hexene-<NUM> in the amount of <NUM> wt%, decane with a purity of not less than <NUM> wt% in the amount of <NUM> wt%, cyclotetradecylcyclohexadecane with a purity of not less than <NUM> wt% in the amount of <NUM> wt% in a reactor with a jacket, stirrer, thermocouple, pressure gauge, the supply of nitrogen gas with a purity of <NUM> wt%. Cool the mixture in the reactor to a temperature of plus <NUM>±<NUM> by stirring with a stirrer and applying cold coolant to the jacket of the reactor. Then, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminium chloride and triisobutylaluminum with a mass ratio of <NUM>:<NUM> in the amount of <NUM> wt% (at <NUM> wt% each) and the catalyst is titanium trichloride in the amount of <NUM> wt% in the form of a suspension with a concentration of <NUM> wt% in heptane. Stir the contents of the reactor, keeping the temperature in the range from plus <NUM> to plus <NUM>, for <NUM>. Then discharge the reaction mass in a stream of nitrogen into sealed gas-tight containers with polyethylene liners so that the height of the mass layer does not exceed <NUM> or discharge into similar polymer containers, hermetically seal, and keep the containers at a temperature of <NUM>±<NUM> for at least <NUM> days without access to an air atmosphere. Crush the resulting polymer blocks subsequently using a cascade of knife mills into particles of <NUM>±<NUM>, <NUM>±<NUM>, and <NUM>±<NUM> in size. Carry out the last grinding in a medium consisting of liquid nitrogen over <NUM> wt% calcium stearate. Add to the prepared polymer powder, polymer non-solving solvent consisting of a mixture of phosphonobutane and ethylene glycol in the ratio of <NUM>:<NUM> by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and oil products in pipelines - a stable fine dispersion with a polymer content <NUM>±<NUM> wt%.

The polymer is prepared according to the following procedure of <CIT>. Load hex-<NUM>-ene in the amount of <NUM> wt%, dodec-<NUM>-ene in the amount of <NUM> wt%, hexadecane with a purity of not less than <NUM> wt% in the amount of <NUM> wt%, cyclooctane with a purity of not less than <NUM> wt% in the amount of <NUM> wt% in a reactor with a jacket, stirrer, thermocouple, pressure gauge, the supply of nitrogen gas with a purity of <NUM> wt%. Cool the mixture in the reactor to a temperature of plus <NUM>±<NUM> by stirring with a stirrer and applying cold coolant to the jacket of the reactor. Then, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminium chloride and triisobutylaluminum with a mass ratio of <NUM>:<NUM> in the amount of <NUM> wt% (at <NUM> wt% each) and the catalyst is titanium trichloride in the amount of <NUM> wt% in the form of a suspension with a concentration of <NUM> wt% in heptane. Stir the contents of the reactor, keeping the temperature in the range from plus <NUM> to plus <NUM>, for <NUM>. Then discharge the reaction mass in a stream of nitrogen into sealed gas-tight containers with polyethylene liners so that the height of the mass layer does not exceed <NUM> or discharge into similar polymer containers, hermetically seal, and keep the containers at a temperature of <NUM> ± <NUM> for at least <NUM> days without access to an air atmosphere. Crush the resulting polymer blocks subsequently using a cascade of knife mills into particles of <NUM>±<NUM>, <NUM>±<NUM>, and <NUM>±<NUM> in size. Carry out the last grinding in a medium consisting of liquid nitrogen over <NUM> wt% calcium stearate. Add to the prepared polymer powder, polymer non-solving solvent consisting of a mixture of n-butanol and ethylene glycol in the ratio of <NUM>:<NUM> by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and oil products in pipelines - a stable fine dispersion with a polymer content <NUM>±<NUM> wt%.

The polymer is prepared according to the following procedure of <CIT>. Load dodec-<NUM>-ene in the amount of <NUM> wt%, dec-<NUM>-ene in the amount of <NUM> wt%, decane with a purity of not less than <NUM> wt% in the amount of <NUM> wt%, cyclohexadecane with a purity of not less than <NUM> wt% in the amount of <NUM> wt% in a reactor with a jacket, stirrer, thermocouple, pressure gauge, the supply of nitrogen gas with a purity of <NUM> wt%. Cool the mixture in the reactor to a temperature of plus <NUM>±<NUM> by stirring with a stirrer and applying cold coolant to the jacket of the reactor. Then, feed the catalyst activator into the reactor in the form of a mixture of diethylaluminium chloride and triisobutylaluminum with a mass ratio of <NUM>:<NUM> in the amount of <NUM> wt% (<NUM> wt% each) and a catalyst - titanium trichloride - in the amount of <NUM> wt% in the form of a suspension with a concentration of <NUM> wt% in heptane. Stir the contents of the reactor, keeping the temperature in the range from plus <NUM> to plus <NUM>, for <NUM>. Then discharge the reaction mass in a stream of nitrogen into sealed gas-tight containers with polyethylene liners so that the height of the mass layer does not exceed <NUM> or discharge into similar polymer containers, hermetically seal, and keep the containers at a temperature of <NUM> ± <NUM> for at least <NUM> days without access to an air atmosphere. Crush the resulting polymer blocks subsequently using a cascade of knife mills into particles of <NUM>±<NUM>, <NUM>±<NUM>, and <NUM>±<NUM> in size. Carry out the last grinding in a medium consisting of liquid nitrogen over <NUM> wt% calcium stearate. Add to the prepared polymer powder, polymer non-solving solvent consisting of a mixture of <NUM>-hexanol and propylene glycol in the ratio of <NUM>:<NUM> by weight, preparing a reagent to reduce the hydrodynamic resistance of the flow of oil and oil products in pipelines - a stable fine dispersion with a polymer content <NUM>±<NUM> wt%.

The method of injection of a drag reducing agent with a great amount of an active base into the flow of hydrocarbon fluid transported through the pipeline is realized according to the following main procedure.

Feed the reagent (DRA) prepared according to the above method into mixer hopper <NUM> equipped with a stirrer and a loading unit in screw feeder <NUM>. Then feed the reagent (DRA) from mixer hopper <NUM> into screw feeder <NUM>, which ensures feeding of the reagent into preparation tank <NUM>, in which the prepared reagent is dissolved. There is a unit for hydrocyclone mixing (hydrocyclone mixer <NUM>) of the reagent with a hydrocarbon fluid and check valve <NUM> before preparation tank <NUM>. While going through hydrocyclone mixer <NUM>, the reagent is mixed with the hydrocarbon fluid supplied from pipeline <NUM> through valve <NUM>, inlet flow meter <NUM>, pressure reducing valve <NUM>. Then, dissolve the reagent in preparation tank <NUM> until it is homogeneous. The prepared slurry is supplied from preparation tank <NUM> through supply flow meter <NUM> to the pipeline using gear pump <NUM> installed in-line. To prevent the reverse flow of the hydrocarbon fluid from the pipeline to preparation tank <NUM> in case of stopping the pump or repair of the station, the supply line is equipped with back valve <NUM> and valve <NUM>. Regulate the dosing of the reagent by turns of screw feeder <NUM> and control by the mass difference of liquids going through inlet flow meter <NUM> and supply flow meter <NUM>.

The above dosing scheme is given in <FIG>).

Assess the efficiency of the prepared products at a laboratory turborheometer (see Table). The drag reduction (DR) of the flow petroleum solvent in the capillary by the reagent was calculated according to the formula: <MAT> where.

The product passes the test if the DR value is at least <NUM>% at the reagent concentration in the petroleum solvent making <NUM> ppm.

Claim 1:
A method for the preparation of a reagent for reducing the hydrodynamic drag of turbulent flow of liquid hydrocarbons in pipelines, characterized by a high polymer content of at least <NUM> wt%, comprising mixing a polyalphaolefin powder reducing the hydrodynamic drag of turbulent flow of liquid hydrocarbons with polymer non-solving solvents and a separating agent (anti-agglomerating agent),
wherein the polymer non-solving solvents are a mixture of a monofunctional heteroatomic organic compound with carbon atoms from <NUM> to <NUM>, and a bifunctional heteroatomic organic compound with carbon atoms from <NUM> to <NUM>, with the following ratio of the components, wt%:

<TAB>

wherein the monofunctional heteroatomic organic compound is at least one of isomers of propanol, butanol, pentanol, hexanol, heptanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, isomers of tripropylamine, tributylamine, tripentylamine, trihexylamine, triheptylamine, trioctylamine, trinonylamine, tridecylamine, triundecylamine, tridodecylamine, tritridecylamine, tritetradecylamine, tripentadecylamine, trihexadecylamine,
wherein the bifunctional heteroatomic organic compound is at least one of tripropyl phosphate, tributyl phosphate, tripentyl phosphate, propylene glycol, butylene glycol, butyl cellosolve, hexylene glycol, ethyl cellosolve, texanol, diethylene glycol, triethylene glycol, isophorone, morpholine, dioxane, dimethyl sulphoxide, dimethylformamide.