1
Rajiv Banavali
Ravindranath Mukkamala, Rajiv Manohar Banavali: Compounds containing amide and carboxyl groups as asphaltene dispersants in crude oil. Rohm and Haas Company, Kenneth Crimaldi, October 17, 2006: US07122112 (3 worldwide citation)


A composition containing: (a) 0.001% to 20% of at least one compound represented by formula (II), wherein R5 is C1–C70 difunctional alkyl or C6–C14 difunctional aryl, and R3and R4 independently are hydrogen, alkyl, heterocyclic, aryl or aralkyl groups; and (b) crude oil. In addition to dispersing as ...


2
Rajiv Banavali
Ravindranath Mukkamala, Rajiv Manohar Banavali: Compounds containing amide and carboxyl groups as asphaltene dispersants in crude oil. Rohm And Haas Company, December 2, 2004: US20040238404-A1


A composition comprising: (a) 0.001% to 20% of at least one compound having: (i) at least one carboxyl group; (ii) at least one amide group; and (iii) at least fifteen carbon atoms; and (b) crude oil; provided that the compound is not represented by formula (I) 1 wherein R1 and R2 independently are ...


3
Bertram T Willman: Method of treating reservoirs containing very viscous crude oil or bitumen. Exxon Production Research Co, E T Wheelock, June 28, 1983: US04390067 (339 worldwide citation)


A method for treating a field containing viscous oil or bitumen for subsequent production is described. The steps central to the process are drilling a horizontal well within the oil-bearing stratum, and heating the oil in the vicinity of the horizontal well to produce a hot liquid corridor. The ope ...


4
John A Masek: Method and apparatus for improved recovery of oil from porous, subsurface deposits (targevcir oricess). Sherman and Shalloway, June 8, 1993: US05217076 (329 worldwide citation)


A method and apparatus for the improved recovery of oil from porous sub-surface deposits such as tar sands comprising mining and drilling a well with upper and lower horizontal rectangular grids extending outward into the deposit and applying steam heat or super heated crude oil vapor through the lo ...


5
Armand A Gregoli, Daniel P Rimmer: Production of synthetic crude oil from heavy hydrocarbons recovered by in situ hydrovisbreaking. World Energy Systems Incorporated, January 25, 2000: US06016868 (283 worldwide citation)


An integrated process is disclosed for treating, at the surface, production fluids recovered from the application of in situ hydrovisbreaking to heavy crude oils and natural bitumens deposited in subsurface formations. The production fluids include virgin heavy hydrocarbons, heavy hydrocarbons conve ...


6
A A Gregoli, Uriel M Oko, Frederic Leder: Process for converting heavy crudes, tars, and bitumens to lighter products in the presence of brine at supercritical conditions. Cities Service Oil and Gas Corporation, John Wade Carpenter, April 4, 1989: US04818370 (268 worldwide citation)


A majority amount of a heavy hydrocarbon crude is reacted with a minor amount of brine, at supercritical temperature and pressure for the brine, for a predetermined period of time in order to upgrade and convert the heavy hydrocarbon crude into a lighter hydrocarbon crude of higher API gravity. The ...


7
William E Showalter: Geopreater heating method and apparatus. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, June 30, 1992: US05126037 (264 worldwide citation)


A separate heat source, such an a skin effect heater, is added to a subterranean heat exchanger and oxygen combustion device for upgrading viscous crude oil feeds. An insulated wire is integrated with combustion oxygen supply piping to form the skin effect heater operating in conjunction with the he ...


8
Valad Venkatesan: Simultaneous recovery of crude from multiple zones in a reservoir. Mobil Oil Corporation, Alexander J McKillop, Michael G Gilman, Charles A Malone, June 2, 1987: US04669542 (244 worldwide citation)


A method for simultaneous recovery of crude oil from multiple zones in a reservoir is disclosed wherein multiple wells, each in fluid communication with at least two hydrocarbon zones separated by an impermeable barrier, are used to produce oil in an enhanced recovery process. The end product from r ...


9
Neil R Edmunds: In-situ recovery of viscous hydrocarbonaceous crude oil. Gulf Canada, R H Saunders, February 26, 1985: US04501326 (238 worldwide citation)


A process for recovering heavy hydrocarbonaceous oil in situ is disclosed. After a communication path is established between injection and production wells, a hot viscous fluid at least 20% of which is produced hydrocarbonaceous oil from the production well is circulated between the wells providing ...


10
Armand A Gregoli, Andrew M Olah, John A Hamshar, Daniel P Rimmer: Preparation of low-viscosity improved stable crude oil transport emulsions. Canadian Occidental Petroleum, John Wade Carpenter, January 8, 1991: US04983319 (236 worldwide citation)


A process for the preparation of low-viscosity improved stable crude oil transport emulsions. The process comprises producing a hydrocarbon crude, and mixing the produced hydrocarbon crude with an emulsifying composition(s) which contains water and is capable of assisting the formation of an oil-in- ...



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