51
George B Arnold: Process for heating a fluid in a geothermal formation. Texaco, Thomas H Whaley, Carl G Ries, Walter D Hunter, December 6, 1977: US04060988 (58 worldwide citation)

An in situ heat exchange process for heating an organic fluid, which can be, for example, a normally liquid hydrocarbon having from 4 to 10 carbon atoms, in a geothermal reservoir formation penetrated by an injection well and a production well comprising injecting the said fluid into the formation v ...


52
Andiappan K S Murthy, Kundanbhai M Patel, Alex Y Bekker: Production of light hydrocarbons by treatment of heavy hydrocarbons with water. Allied Corporation, R C Stewart II, A M Doernberg, G H Fuchs, September 24, 1985: US04543177 (57 worldwide citation)

A process is disclosed for converting heavy hydrocarbons into light hydrocarbons which comprises contacting, in a first zone, a heavy hydrocarbon having an API gravity at 25.degree. C. of less than about 20, such as Boscan heavy crude oil and tar sand bitumen, with a liquid comprising water, in the ...


53
Manabu Yanou, Michio Kanno, Masaru Uehara, Masanori Itakura: Device and method for processing crude oil. Mitsubishi Rayon, Oblon Spivak McClelland Maier & Neustadt P C, October 29, 2002: US06471869 (56 worldwide citation)

A crude oil processing method is provided wherein a membrane module is immersed in the crude oil contained in a processing tank and the crude oil is pressurized or driven by gravity for gravitational filtration, thereby to pass through the membrane, with the dehydrated oil that has passed being take ...


54
Eugene T Premuzic, Mow Lin: Process for producing modified microorganisms for oil treatment at high temperatures, pressures and salinity. Associated Universities, Margaret C Bogosian, February 20, 1996: US05492828 (55 worldwide citation)

This invention relates to the preparation of new, modified organisms, through challenge growth processes, that are viable in the extreme temperature, pressure and pH conditions and salt concentrations of an oil reservoir and that are suitable for use in microbial enhanced oil recovery. The modified ...


55
Magdalena M Ramirez de Aqudelo, Carmen E Galarraga: Catalytic system for the hydroconversion of heavy oils. Intevep, Bachman & LaPointe, June 26, 1990: US04937218 (54 worldwide citation)

The present invention relates to a process for the hydroconversion of heavy crude oil and an improved regenerable catalyst for use therein. The process broadly comprises (a) introducing into a hydroconversion reaction zone a feedstock of crude oil, hydrogen, from about 10 to about 1000 wppm of an ac ...


56
Robert R Dean, Jean L Mauleon, Robert J Newman: Method and means for preparing and dispersing atomed hydrocarbon with fluid catalyst particles in a reactor zone. Carl D Farnsworth, January 24, 1984: US04427537 (54 worldwide citation)

The invention described is concerned with atomizing an oil fraction of crude oil to provide a fog of oil droplets in diluent gaseous material which is sprayed into an upwardly flowing annular dense mass of catalyst particles to form a high temperature suspension therewith and conveyed through a rise ...


57
Guido Sartori, David William Savage, William Neergaard Olmstead, Winston Karl Robbins, David Craig Dalrymple, Bruce Henry Ballinger: Process for treatment of petroleum acids with ammonia. Exxon Research and Engineering Company, Linda M Scuorzo, July 10, 2001: US06258258 (53 worldwide citation)

The present invention is a process for decreasing the acidity of a starting acidic crude oil by contacting an acidic crude with an effective excess of ammonia dissolved in said crude to form an ammonia-continuous oil discontinuous phase at a temperature and conditions sufficient to form the correspo ...


58
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 (52 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 ...


59
Knut Grande, Carsten Sorlie: Process for removing essentially naphthenic acids from a hydrocarbon oil. Den norske stats oljeseskap, Kirkpatrick & Lockhart, May 16, 2000: US06063266 (52 worldwide citation)

A process for removing essentially naphthenic acids from a crude oil which has not previously been fractionated by distillation, or from which only a naphtha fraction has been distilled. The crude oil is hydrogenated at 1-50 bars and 100-300.degree. C. over a catalyst of the kind used for hydrogenat ...


60
Donald H Powers: Olefin production utilizing whole crude oil. Equistar Chemicals, Roderick W MacDonald, June 1, 2004: US06743961 (52 worldwide citation)

A method for utilizing whole crude oil as a feedstock for the pyrolysis furnace of an olefin production plant wherein the feedstock after preheating is subjected to mild cracking conditions until substantially vaporized, the vapors from mild cracking being subjected to severe cracking in the radiant ...



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