1
Arun K Sharma, Eric B Sirota, Michael F Raterman: Fouling reduction in a paraffinic froth treatment process by solubility control. ExxonMobil Upstream Research Company, ExxonMobil Upstream Research Company Law Department, January 15, 2013: US08354020 (8 worldwide citation)

The disclosure relates to improved bitumen recovery processes and systems. In particular, the disclosure teaches processes and systems for recovering heavy crude oil while avoiding fouling of equipment by recycling at least a portion of a product bitumen from a solvent recovery unit for mixing with ...


2
Rainer Kolb, Sudhin Datta, Liehpao Oscar Farng, Vera Minak Bernero, Eric B Sirota, Thomas Tungshi Sun, Mun Fu Tse: Ethylene-based copolymers, lubricating oil compositions containing the same, and methods for making them. ExxonMobil Chemical Patents, November 13, 2012: US08309501 (7 worldwide citation)

Provided are ethylene-based copolymers, methods of preparing the same, lubricating oil compositions including the same, methods for preparing such lubricating oil compositions, and end uses for such ethylene-based copolymers and lubricating oil compositions. The ethylene-based copolymers may include ...


3
Thomas G Mason, James C Sung, Zhengdong Cheng, Eric B Sirota, Michael Siskin: Asphaltene aggregation in petroleum oil mixtures determined by small angle light scattering. ExxonMobil Research and Engineering Company, Ronald D Hantman, January 4, 2005: US06839137 (5 worldwide citation)

The present invention includes a method to determine if asphaltenes are soluble or insoluble in a solution. The solution may be a petroleum oil, a mixture of petroleum oils, petroleum derived oils and mixtures or similar combinations in a solvent. The invention includes the steps of illuminating the ...


4
Daniel P Leta, Walter D Vann, David T Ferrughelli, Eric B Sirota, Howard Freund: Process for producing a high stability desulfurized heavy oils stream. ExxonMobil Research and Engineering Company, Bruce M Bordelon, December 24, 2013: US08613852 (4 worldwide citation)

Self-compatible heavy oil streams are produced from converted and/or desulfurized fractions. In a preferred embodiment, an incompatibility stream is added to the converted and/or desulfurized stream to reduce the solubility number of the stream. After using a water wash to remove incompatible materi ...


5
Bruce R Cook, Eric B Sirota, Hu Gang, Loren L Ansell: Fischer-tropsch wax and crude oil mixtures having a high wax content. ExxonMobil Research and Engineering Company, Jay Simon, July 31, 2001: US06268401 (2 worldwide citation)

The invention is a process for producing a mixture of wax and crude oil which can be pumped at ambient temperature. The wax is preferably a Fisher-Tropsch wax. The temperature of the crude oil is controlled to a level below the dissolution temperature of the wax. The wax crystals are homogenized and ...


6
Sudhin Datta, Jo Ann Marie Canich, Liehpao Oscar Farng, Rainer Kolb, Vera Minak Bernero, Eric B Sirota, Thomas Tungshi Sun, Mun Fu Tse, Manika Varma Nair: Polymeric compositions useful as rheology modifiers and methods for making such compositions. ExxonMobil Chemical Patents, March 5, 2013: US08389452 (1 worldwide citation)

Disclosed are rheology modifiers comprising compositionally disperse polymeric compositions and/or crystallinity disperse polymeric compositions that may be useful in modifying the rheological properties of lubrication fluids, and methods for making such compositions. The compositionally disperse po ...


7
Daniel P Leta, Eric B Sirota, Edward W Corcoran, Anjaneya S Kovvali, Stephen H Brown, Stephen M Cundy: Enhancement of saturates content in heavy hydrocarbons utilizing ultrafiltration. ExxonMobil Research and Engineering Company, Bruce M Bordelon, David M Weisberg, May 15, 2012: US08177965 (1 worldwide citation)

This invention relates to an ultrafiltration process for separating a heavy hydrocarbon stream to produce an enriched saturates content stream(s) utilizing an ultrafiltration separations process. The enriched saturates content streams can then be further processed in refinery and petrochemical proce ...


8
Kirk C Nadler, Daniel P Leta, Halou Oumar Mahamat, Edward W Corcoran, Stephen H Brown, Eric B Sirota, John H Hollenbach, Anjaneya S Kovvali: Process for separating a heavy oil feedstream into improved products. ExxonMobile Research and Engineering Company, Bruce M Bordelon, March 1, 2011: US07897828 (1 worldwide citation)

This invention relates to a process for separating a heavy hydrocarbon stream to produce at least one permeate product stream and at least one retentate product stream. The process utilizes an ultrafiltration process to designed to maximize the quality of the permeate and retenate product streams as ...


9
Eric B Sirota, Owen J Hehmeyer: Solvent separation in a solvent-dominated recovery process. ExxonMobil Upstream Research Company, ExxonMobil Upstream Research Company—Law Department, June 17, 2014: US08752623

In solvent-dominated recovery processes for recovering In situ oil, including bitumen, the produced fluid stream includes oil and solvent. The solvent is preferably recovered and reinjected into the reservoir. In previously described methods, solvent is removed from the oil/solvent mixture. In the p ...


10
Rainer Kolb, Sudhin Datta, Liehpao O Farng, Vera Minak Bernero, Eric B Sirota, Thomas T Sun, Mun Fu Tse: Ethylene-based copolymers, lubricating oil compositions containing the same, and methods for making them. ExxonMobil Chemical Patents, Jennifer A Schmidt, November 3, 2015: US09175240

Provided are ethylene-based copolymers, methods of preparing the same, lubricating oil compositions including the same, methods for preparing such lubricating oil compositions, and end uses for such ethylene-based copolymers and lubricating oil compositions. The ethylene-based copolymers may include ...