Dow Global Technolgoies LLC

Rohm and Haas Company

Troy E Knight

Pramod D Patil

Amit Katiyar

Susan K Falcone-Potts

Martha P Hernandez

Matthew E Crosley

Aaron W Sanders

Biplab Mukherjee

Sayeed Abbas

David L Frattarelli

Yifan Wang

Phillip D Kardenetz

Roger L Kuhlman

Christopher John Tucker

Sean W Ewart

Wanglin Yu

Peng Gao

Lixin Sun

Robert M Campbell

Caroline Woelfle-Gupta

Adam L Grzesiak

Joydeep Mukherjee

Mechelle Ann Churchfield

Jacob Crosthwaite

Roxanne M Jenkins

David Koenigs

Pritish M Kamat

Neeraj Rohilla

Brenna White

Martha Hernandez

Christopher J Tucker

The present disclosure provides a drag reducing agent. In an embodiment, the drag reducing agent includes a polymer and a liquid carrier. The polymer is composed of one or more C-Cα-olefin monomers. The polymer includes a residual amount of zirconium. The polymer has an absolute weight average molecular weight (Mw) greater than 1,300,000 g/mol and a (Mw/Mnfrom 1.3 to 3.0.

Drag reducing agent

A surfactant composition including a CAOS and/or CAOS, and an effective amount of at least one solubilizing component so as to increase brine tolerance of the composition is disclosed. The solubilizing component comprises a mixture of where X is H, an alkali metal, alkaline earth metal or ammonium, and R is a linear C-Calkyl group. A method of recovering hydrocarbons from a reservoir during gas injection into said reservoir is also disclosed which involves at least periodically injecting the gas and a foam-forming surfactant composition into the reservoir so as to assist in the recovery of hydrocarbons from the reservoir.

Surfactant formulations for aqueous foam stability at high temperature and high salinity conditions

A surfactant composition including a CAOS and/or CAOS, and an effective amount of at least one solubilizing component so as to increase brine tolerance of the composition is disclosed. The solubilizing component comprises a mixture of

The present disclosure provides for a sandstone-containing oil reservoir additive composition that includes (a) a nonionic wettability alteration agent having Formula (I): and (b) an injection fluid. For Formula (I), R is an alkyl residue from a branched secondary alcohol initiator, where R can have a carbon number of C4 to C10, x is from 3 to 10 and y is from 1 to 20. The injection fluid can be selected from the group consisting of sea water, engineered water, injection brine, produced brine or combinations thereof. The nonionic wettability agent in the sandstone reservoir additive composition can be from 0.01 weight percent (wt %) to 20 wt % based on the total weight of the sandstone reservoir additive composition. The sandstone-containing oil reservoir additive composition can be used in enhance oil recovery operations, such as a waterflooding operation or a carbon dioxide flooding operation.

Enhanced crude oil recovery from subterranean crude oil-bearing sandstone reservoirs

A method of enhanced oil recovery that includes injecting a composition including an hyperbranched polyglycerol into an injection well in a subterranean oil-bearing reservoir, the hyperbranched polyglycerol being a primary alcohol that is a reaction product of a C2 to C25 carbon alcohol and a plurality of glycidols; and displacing oil in the subterranean oil-bearing reservoir using the composition.

Additive for enhanced oil recovery

Embodiments of the present disclosure are directed towards methods of enhanced oil recovery from a subterranean reservoir, the method includes co-injecting a gas and a foam formulation into the subterranean reservoir, wherein the gas comprises steam and the foam formulation comprises a sulfonate composition, a glycol compound, and water.

Enhanced oil recovery methods and compositions

Disclosed is a temperature stabilized aqueous wettability composition and method of use for the recovery of petroleum from subterranean formulations. Said aqueous wettability composition comprises a polyethylene oxide nonionic surfactant, a disulfonated anionic surfactant, and one or more alcohol.

Low-temperature stabilized surfactant blend for enhanced oil recovery

The present invention includes a foam-forming composition for use in enhanced oil recovery, and a method of using said foam-forming composition for recovering oil. The foam-forming composition of the present invention comprises a nonionic surfactant, in particular an alcohol-alkoxylate, and an anionic surfactant, in particular an alkyl diphenyloxide (di)sulfonate, where the foam-forming composition promotes a formation of a stable foam formed of a COand water.

Co-surfactant foam-forming composition for enhanced oil recovery

The present invention provides for a method of using a mixture of two or more nonionic surfactants for enhanced oil recovery and for an emulsion that includes carbon dioxide, a diluent and a mixture of two or more nonionic surfactants, where each nonionic surfactant is prepared with a double metal cyanide catalyst.

Nonionic surfactant compositions for enhanced oil recovery

Embodiments of the present disclosure include modified nonionic surfactant formulations having a nonionic surfactant and a pour point depressant, where the modified nonionic surfactant formulations have a pour point of &#x2212;54&#xb0; C. to &#x2212;75&#xb0; C. In one or more embodiments, the modified nonionic surfactant formulations can be introduced into a flow of carbon dioxide, where the flow of carbon dioxide and the modified nonionic surfactant formulation are injected into an oil containing reservoir. In one or more embodiments, an emulsion of the carbon dioxide and the nonionic surfactant form in the oil containing reservoir, where the use of the pour point depressant provides minimal interference in forming the emulsion.

Modified nonionic surfactant formulations for enhanced oil recovery

This invention relates to a foam-forming composition having good low temperature stability and method of use thereof for enhanced oil recovery. Said foam-forming composition comprises an anionic sulfonate surfactant, preferably an alpha-olefin sulfonate, a alkyl ether solvent, and water and is preferably stable to at least &#x2212;5 C. A preferred alkyl ether solvent has the formula C8H18O3, C8H16O3, or mixtures thereof. Preferred alpha-olefin sulfonate have 10 to 18 carbons, preferably 12 carbons. A preferred method for recovering oil from a reservoir comprises the periodic injection of gas and said foam-forming composition into the reservoir and contacting the oil in the reservoir with the foam so as to assist in the recovery of oil from the reservoir.

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Missouri City, TX, United States of America

Troy E Knight