Abstract

Drag-reducing polymers and methods of manufacturing drag-reducing polymers are provided. In one aspect, an ultra-high molecular weight terpolymer useful as a drag reducer for hydrocarbons having a molecular weight greater than 1 million is provided. The terpolymer includes (a) a first monomer including a first alpha-olefin monomer having a carbon chain length of between 4 and 9 carbon atoms. The terpolymer further includes (b) a second monomer including a second alpha-olefin monomer having a carbon chain length of between 12 and 15 carbon atoms. The terpolymer further includes (c) a third monomer including a third alpha-olefin monomer having a carbon chain length of between 10 and 11 carbon atoms, wherein the second monomer is present at greater than or at 25% (molar content).

IPC Classes  ?

• C08F 210/14 - Monomers containing five or more carbon atoms
• F15D 1/00 - Influencing the flow of fluids
• F17D 1/16 - Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity

Abstract

A drag reducing composition, methods of forming a drag reducing composition, and methods of using a drag reducing composition to reduce the pressure drop of a liquid hydrocarbon through a conduit are provided. The drag reducing composition includes a latex polymer, a cationic surfactant, optionally a nonionic surfactant, and a continuous phase. The cationic surfactant is selected from quaternary ammonium-based cationic surfactants, imidazolium-based cationic surfactants, pyridinium-based cationic surfactants, or a combination thereof.

IPC Classes  ?

• C09K 8/035 - Organic additives
• F17D 1/16 - Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity

Abstract

Implementations described herein generally relate to a drag reducing agent (DRA) for improving flow of crude oils having high asphaltene content through pipelines. The DRA is a terpolymer having a glass transition temperature (Tg) of 6 degrees Celsius or below. The terpolymer is formed by a first monomer, a second monomer, and a third monomer. The first and second monomers are chosen based on the glass transition temperatures of corresponding homopolymers. The glass transition temperature of the homopolymer formed with the first monomer is at least 120 degrees Celsius higher than the glass transition temperature of the homopolymer formed with the second monomer. The DRA comprised of the terpolymer formed with the second monomer produces softer solids and fewer solids due to the low glass transition temperature of the terpolymer. The softer solids are more easily handled by the pump to keep the injection system clear.

IPC Classes  ?

• C09K 8/035 - Organic additives
• F17D 1/16 - Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity

Abstract

Implementations described herein generally relate to methods for purifying alpha-olefins. The alpha-olefins may be used to form drag reducing agents for improving flow of hydrocarbons through conduits, particularly pipelines. In one implementation, a method of increasing alpha-olefin content is provided. The method includes providing an olefin feedstock composition having an alpha-mono-olefin and at least one of a diolefin having an equal number of carbon atoms to the alpha-mono-olefin and/or a triolefin having an equal number of carbon atoms to the alpha-mono-olefin. The method further includes contacting the olefin feedstock composition with ethylene in the presence of a catalyst composition including an olefin metathesis catalyst. The method further includes reacting the olefin feedstock composition and ethylene at metathesis reaction conditions to produce an alpha-olefin product comprising the alpha-mono-olefin and alpha-olefins having fewer carbon atoms than the alpha-mono-olefin.

IPC Classes  ?

• C07C 6/04 - Metathesis reactions at an unsaturated carbon-to-carbon bond at a carbon-to-carbon double bond

Abstract

Embodiments of the present disclosure generally relate to a drag reducing suspension capable of dissolving in cold hydrocarbon fluids at usage level. In one embodiment, the drag reducing composition comprises a drag reducing polymer, a partitioning agent comprises a one or more of a coal-tar resin, a C5 aliphatic petroleum resin, a C9 aromatic petroleum resin, C5/C9 aliphatic/aromatic petroleum resin, a cycloaliphatic diene-based petroleum resin, a pure monomer resin, a terpene resin, a terpene phenol resin, a styrenated terpene resin, a rosin resin, a rosin resin derivative, one or more of an alkylphenol resin, a modified alkylphenol resin, and fully or partially hydrogenated form thereof, and suspending fluid medium. The partitioning agent has a good solubility (greater than 8 ppm) in a hydrocarbon stream, such as in a cold refined hydrocarbon stream, for example a diesel stream at a temperature of 0C or less.

IPC Classes  ?

• C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
• C08L 91/06 - Waxes
• C08L 93/04 - Rosin
• C08L 61/04 - Condensation polymers of aldehydes or ketones with phenols only
• F17D 1/17 - Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid