Al-Shafei
Emad Naji Al-Shafei, Dhahran SA
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20100288494 | MICROWAVE-PROMOTED DESULFURIZATION OF CRUDE OIL - Heavy crude oils having high sulfur content and viscosities are upgraded by a hydrodesulfurization (HDS) process that includes microwave irradiation of a mixture of the sour heavy crude oil with at least one catalyst and optionally, one or more sensitizers, and irradiation in the presence of hydrogen. The process is also adapted to microwave treatment of hard to break emulsions, either above ground or below ground where water-in-oil emulsions are initially formed, followed by the catalytic hydrodesulfurization promoted by application of further microwave energy to the demulsified crude oil stream. | 11-18-2010 |
20130048542 | DESULFURIZATION OF HYDROCARBONS BY SOLVENT EXTRACTION - A high sulfur content hydrocarbon feedstream is treated by mixing one or more selected solvents with a sulfur-containing feedstream for a predetermined period of time, allowing the mixture to separate and form a sulfur-rich solvent-containing liquid phase and a crude oil phase of substantially lowered sulfur content, and withdrawing the sulfur-rich stream and regenerating the solvent. | 02-28-2013 |
20130053578 | Process for In-Situ Electrochemical Oxidative Generation and Conversion of Organosulfur Compounds - Hydrocarbon feedstocks are desulfurized by conversion of organosulfur compounds in a mixture of hydrocarbons into sulfoxides and/or sulfones. The oxidant used to promote oxidation of organosulfur-compounds is electrosynthesized in-situ. | 02-28-2013 |
Emad Naji Al-Shafei, Saihat SA
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20090107890 | Desulfurization of whole crude oil by solvent extraction and hydrotreating - A high sulfur content crude oil feedstream is treated by mixing one or more selected solvents with a sulfur-containing crude oil feedstream for a predetermined period of time, allowing the mixture to separate and form a sulfur-rich solvent-containing liquid phase and a crude oil phase of substantially lowered sulfur content, withdrawing the sulfur-rich stream and regenerating the solvent, hydrotreating the remaining sulfur-rich stream to remove or substantially reduce the sulfur-containing compounds to provide a hydrotreated low sulfur content stream, and mixing the hydrotreated stream with the separated crude oil phase to thereby provide a treated crude oil product stream of substantially reduced sulfur content and without significant volume loss. | 04-30-2009 |
20130026082 | DYNAMIC DEMULSIFICATION SYSTEM FOR USE IN A GAS-OIL SEPARATION PLANT - A dynamic water/oil demulsification system for a gas-oil separation plant (GOSP) includes: | 01-31-2013 |
Emad Naji Al-Shafei, Siehat SA
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20130075305 | SELECTIVE LIQUID-LIQUID EXTRACTION OF OXIDATIVE DESULFURIZATION REACTION PRODUCTS - The present invention provides selective extraction of sulfoxides, or sulfoxides in combination with sulfones, from hydrocarbon mixtures containing these compounds. A significant advantage of the invention is that oxidation products resulting from oxidative desulfurization of hydrocarbon feedstocks are selectively extracted with minimum co-extraction of non-oxidized products such as valuable hydrocarbon fuel components. | 03-28-2013 |
20130341247 | MICROWAVE-PROMOTED DESULFURIZATION OF CRUDE OIL - Heavy crude oils having high sulfur content and viscosities are upgraded by a hydrodesulfurization (HDS) process that includes microwave irradiation of a mixture of the sour heavy crude oil with at least one catalyst and optionally, one or more sensitizers, and irradiation in the presence of hydrogen. The process is also adapted to microwave treatment of hard to break emulsions, either above ground or below ground where water-in-oil emulsions are initially formed, followed by the catalytic hydrodesulfurization promoted by application of further microwave energy to the demulsified crude oil stream. | 12-26-2013 |
Mansour A. Al-Shafei, Saihat SA
Patent application number | Description | Published |
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20110265692 | METHOD AND PRODUCT FOR VARYING THE THICKENING TIME OF A CLASS G CEMENT USED IN COMPLETING A SUBTERRANEAN WELLBORE - Spent Claus catalyst having a high alumina content is used as an ingredient in the manufacture of Portland cements in place of all or a portion of a conventional source of alumina. The spent Claus catalyst is preferably of a small particle size and can be ground to the desired fineness before mixing with the other ingredients that are heated in a conventional kiln to produce the cement composition. Finely ground spent Claus catalyst can also be used as an additive at levels of 0.1% to 2% by weight to increase the thickening time of shallow casing cement slurries. | 11-03-2011 |
20120282470 | GROUND PARTICULATE SPENT CLAUS CATALYST PRODUCT - Spent Claus catalyst having a high alumina content is used as an ingredient in the manufacture of Portland cements in place of all or a portion of a conventional source of alumina. The spent Claus catalyst is preferably of a small particle size and can be ground to the desired fineness before mixing with the other ingredients that are heated in a conventional kiln to produce the cement composition. Finely ground spent Claus catalyst can also be used as an additive at levels of 0.1% to 2% by weight to increase the thickening time of shallow casing cement slurries. | 11-08-2012 |
Mansour A. Al-Shafei, Dhahran SA
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20140262825 | Encapsulated Impressed Current Anode for Vessel Internal Cathodic Protection - Embodiments of a system and method for providing cathodic protection to a vessel include encapsulating a dimensionally stable anode with a wax-repellant cementitious coating. The anode, with the encapsulant, is inserted into a structure to be protected, such as a vessel for handling wet crude. A power supply is connected to the anode and to the vessel, making the vessel a cathode. When power is applied, ions flow from the anode, through the encapsulant and fluids in the vessel, to the vessel structure. The encapsulant prevents paraffin wax from building up on the anode. | 09-18-2014 |