91
Albert F Chan, Michael D Erwin: Water block removal with surfactant based hydrocarbonaceous liquid system. ConocoPhillips Company, F Lindsey Scott, June 28, 2005: US06911417 (40 worldwide citation)

A composition, formulation, and method for removing water from a near-wellbore portion of a subterranean formation containing a crude oil and penetrated by a wellbore. The formulation contains alkylpolyglycoside, ethoxylated alcohol and linear alkyl alcohols. The composition contains a hydrocarbonac ...


92
George R Norman: Process for treating used motor oil and synthetic crude oil. Maky Renner Otto & Boisselle, February 21, 1984: US04432865 (40 worldwide citation)

A process for treating used motor oil or synthetic crude oil comprising: (i) contacting said used motor oil or synthetic crude oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) a polyhydroxy compound to react undesired contaminants contained ...


93
Chang Y Cha, John E Boysen, Jan F Branthaver: Process for removing heavy metal compounds from heavy crude oil. Western Research Institute, Browdy and Neimark, August 20, 1991: US05041209 (40 worldwide citation)

A process is provided for removing heavy metal compounds from heavy crude oil by mixing the heavy crude oil with tar sand; preheating the mixture to a temperature of about 650.degree. F.; heating said mixture to up to 800.degree. F.; and separating tar sand from the light oils formed during said hea ...


94
Winston R Shu: Method for transporting viscous crude oils. Mobil Oil Corporation, Alexander J McKillop, James F Powers Jr, Lawrence O Miller, December 13, 1983: US04420008 (40 worldwide citation)

Viscous crude oil is mixed with an oil diluent having a relatively low viscosity and the resulting mixture having a predetermined viscosity and flow rate is pumped in a pipeline to a point of use. The flow rates of the viscous crude oil and the diluent are controlled with the aid of a digital comput ...


95
Bibhas R De, Paul L Donoho, David E Revus, Russell E Boyer: Microwave system for monitoring water content in a petroleum pipeline. Chevron Research Company, Edward J Keeling, February 20, 1990: US04902961 (39 worldwide citation)

A method and apparatus for determining the water content of crude oil in a pipeline is disclosed. The device consists of S-band tarnsmitting and receiving antennas, and X-band transmitting and receiving antennas. These are used to determine the complex dielectric constant of the fluid in a pipeline. ...


96
Alf Silkeberg, S Parkash Kochhar: Refining of edible oil retaining maximum antioxidative potency. Lipidia Holding, Jordan and Hamburg, March 7, 2000: US06033706 (39 worldwide citation)

Crude edible specialty oils, namely, sesame seed oil, rice bran oil, wheat germ oil, oat germ oil, coffee oil, tea seed oil, and pine seed oil are refined so as to minimize the destruction of antioxidants and antioxidant precursors naturally occurring in the crude oil. This specially processed or "d ...


97
Don C Shell, Edward C Hayward: Using an antifoulant in a crude oil heating process. Nalco Chemical Company, Hill Gross Simpson Van Santen Steadman Chiara & Simpson, May 17, 1977: US04024051 (39 worldwide citation)

Inorganic phosphorus-containing acids and salts thereof in small amounts function as antifoulant additives in crude oil systems employed as feedstocks in petroleum refining which are subjected to elevated temperatures of from about 100.degree. to 1500.degree. F. and which are prone to produce foulin ...


98
Dennis C Wegener, David R Zornes, Daniel R Maloney, Michael E Vienot, Michael Lee Fraim: Heavy oil viscosity reduction and production. Phillips Petroleum Company, Gary L Haag, August 28, 2001: US06279653 (38 worldwide citation)

This invention provides an apparatus and process for producing heavy crude oil from a subterranean formation penetrated by a well bore. In accordance with the process, an aqueous alkaline chemical solution is introduced into or formed in the well bore penetrating the formation. The aqueous alkaline ...


99
F Glenn Lively: Insulated pipe. Douglas W Miller, June 4, 2002: US06397895 (38 worldwide citation)

Pipes or pipelines insulated and optionally coated on their interior surface or surfaces are described. Pipes or pipelines insulated and optionally coated on their exterior surface or surfaces are also contemplated, The pipes or pipelines may be for submerged service, below the surface of water. The ...


100
Don C Shell, Edward C Hayward: Mono and di organophosphite esters as crude oil antifoulants. Nalco Chemical Company, Hill Gross Simpson Van Santen Steadman Chiara & Simpson, May 17, 1977: US04024049 (38 worldwide citation)

Thio-phosphate and -phosphite mono- and di-esters in small amounts function as antifoulant additives in crude oil systems employed as feedstocks in petroleum refining which are subjected to elevated temperatures of from about 100.degree. to 1500.degree. F and which are prone to produce material that ...