Inoue Kiyoshi: Method employing wave energy for the extraction of sulfur from petroleum and the like. October 26, 1971: US3616375 (85 worldwide citation)

A method of decreasing the sulfur content of crude oil and other petroleum products in which the sulfur is present in an elemental state or in chemical combination with an organic substance (i.e., the crude oil), in which high-energy activation at relatively low temperatures ruptures carbon-sulfur b ...

Omer Refa Koseoglu: Enhanced solvent deasphalting process for heavy hydrocarbon feedstocks utilizing solid adsorbent. Saudi Arabian Oil Company, Abelman Frayne & Schwab, July 28, 2009: US07566394 (81 worldwide citation)

A solvent deasphalting of crude oil or petroleum heavy fractions and residues is carried out in the presence of a solid adsorbent, such as clay, silica, alumina and activated carbon, which adsorbs the contaminants and permits the solvent and oil fraction to be removed as a separate stream from which ...

Daniel S Sullivan III, Allan R Thomas, Juan M Garcia III, Paul Yon Hin: Method of treating sour gas and liquid hydrocarbon. Nalco Exxon Energy Chemicals, Thomas M Breininger, Kelly L Cummings, Robert L Graham, April 28, 1998: US05744024 (79 worldwide citation)

Reaction of 1,3,5-tri-substituted-hexahydro-1,3,5-triazine is accelerated in H.sub.2 S scavenging by the addition of quaternary ammonium compound. The preferred hexahydro triazines are 1,3,5-tri-methyl-hexahydro-1,3,5-triazines and 1,3,5-tri-methoxypropyl-hexahydro-1,3,5-triazines. The blend of the ...

Stephen K Liu: Method of producing hydrogen from heavy crude oil using solvent deasphalting and partial oxidation methods. Atlantic Richfield Company, F Lindsey Scott, September 28, 1999: US05958365 (78 worldwide citation)

Heavy crude oil is recovered and processed at a refinery through (a) a distillation zone(s), (b) a solvent deasphalting unit (c ) a high pressure air partial oxidation gasifier to produce a CO-rich gas mixture including hydrogen, (d) a shift reactor and (e) a purification step to produce 99.9% pure ...

Jerry J Weers: Suppression of the evolution of hydrogen sulfide gases from crude oil, petroleum residua and fuels. Petrolite Corporation, Kenneth Solomon, December 8, 1992: US05169411 (75 worldwide citation)

Hydrogen sulfide gas evolution during storage or transport of petroleum residua is suppressed by the incorporation of an effective amount of certain imines.

Roger G Etter: Production and use of a premium fuel grade petroleum coke. Standley & Gilcrest, January 2, 2001: US06168709 (73 worldwide citation)

A premium “fuel-grade” petroleum coke is produced by modifying petroleum coking technology. Coking process parameters are controlled to consistently produce petroleum coke within a predetermined range for volatile combustible material (VCM) content. The invention includes a process of producing a co ...

James J Krutak, Michael R Cushman, Max A Weaver: Method for tagging petroleum products. Eastman Chemical Company, Karen A Harding, Harry J Gwinnell, June 11, 1996: US05525516 (73 worldwide citation)

This invention provides a method for imparting invisible markings for identification purposes to petroleum hydrocarbons by incorporating one or more infrared fluorescing compounds therein. Certain infrared fluorophores from the classes of squaraines (derived from squaric acid), phthalocyanines and n ...

Wolk Ronald H, Nongbri Govanon, Rovesti William C: Multi-zone method for demetallizing and desulfurizing crude oil or atmospheric residual oil. Hydrocarbon Research, August 26, 1975: US3901792 (73 worldwide citation)

The high level desulfurization of petroleum residuums normally having at least 100 ppm of metals from the groups of vanadium and nickel is accomplished by an initial contact stage with a contact material such as Porocel, having extensive macroporosity with more than 0.15 cc/gram pore volume in pores ...

Oliver C Mullins: Method of distinguishing between crude oils. Schlumberger Technology Corporation, David P Gordon, Leonard W Pojunas, November 30, 1993: US05266800 (72 worldwide citation)

Methods for distinguishing among oil samples, and more particularly between a fluid containing oil base mud and formation oil samples are described. The methods all rely on the discovery that the optical absorption spectrum of all crude oils in the visible and near infrared spectra can be described ...

Armin Sowa, German Munding: Method and apparatus for extracting crude oil from previously tapped deposits. Messerschmitt Bolkow Blohm, McGlew and Tuttle, September 30, 1980: US04224991 (71 worldwide citation)

A device for extracting crude oil out of an extraction bore of a previously tapped deposit, comprises, a combustion chamber having at least one reaction chamber portion and an evaporation chamber portion arranged in axial relationship with a constricted nozzle portion therebetween. Advantageously, a ...