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 (61 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 ...

Bernard M Gillespie, Michael S Sarli, Kenneth W Smith: Manufacture of lube base stock oil. Mobil Oil Corporation, Charles A Huggett, Vincent J Frilette, January 1, 1980: US04181598 (60 worldwide citation)

Lube base stock oil of low pour point and excellent stability is produced from a waxy crude oil fraction by solvent refining, catalytic dewaxing over a zeolite catalyst in the nature of zeolite ZSM-5 and hydrotreating under specified conditions.

Ivan C Cheetham, Jack M Lowe, Glyn H Redmond: Crude oil pipe having layers of graduated permeability to hydrogen sulfide. Dunlop, Stevens Davis Miller & Mosher, September 6, 1983: US04402346 (59 worldwide citation)

A pipe for transporting crude oil comprises a layer of polymeric material for containing oil within the bore of the pipe, the polymeric material being surrounded and supported by a reinforcement structure comprising high tensile reinforcement elements which are protected from corrosion by gases pass ...

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 (59 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 ...

Nick Baiton: Horizontal drilling method for hydrocarbon recovery. Jerry T Kearns, April 4, 1995: US05402851 (59 worldwide citation)

A method for recovering fluids such as crude oil, associated solution gas, formation water, injected water, natural gas and other gases, and natural gas liquids, from a hydrocarbon producing reservoir or formation in which fluids collected in one or more substantially horizontal wells are routed to ...

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 (59 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 ...

Nathan H Canter, Max L Robbins, Edward G Baker: Oil recovery process using polymer microemulsion complexes. Exxon Research and Engineering Co, James H Takemoto, November 23, 1982: US04360061 (58 worldwide citation)

A process for the enhanced recovery of oil from a subterranean formation using a polymer-microemulsion complex is disclosed. The polymer is polyethylene oxide or polyvinyl pyrrolidone and interacts with the surfactant of the microemulsion to form a physical association. The resulting complex is char ...

Donald F Best, Gary N Long, Regis J Pellet, Jule A Rabo, Edward T Wolynic, Frank P Gortsema, Albert R Springer: Hydrocracking catalyst and hydrocracking process. UOP, Vincent J Vasta Jr, January 30, 1990: US04897178 (57 worldwide citation)

A process for hydrocracking a crude oil feed, a hydrocracking catalyst employed therein, and a process for the preparation of this catalyst are disclosed. The hydrocracking catalyst comprises a zeolitic aluminosilicate which has an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 6 and which has ...

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 (55 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 ...

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 ...