1
Paul C Koehler, Stephen A Geibel, Michael B Whitlock, Reza Hashemi, Christophe A Malbrel: Filter for subterranean wells. PALL Corporation, Leydig Voit & Mayer, September 9, 1997: US05664628 (87 worldwide citation)

A damage-resistant filter for use in subterranean wells has at least one layer of a filter medium, such as a sintered supported porous membrane, coaxially disposed about a perforated support member. The filter may also include a drainage layer disposed between the inner support member and the filter ...


2
Paul C Koehler, Stephen A Geibel, Michael B Whitlock, Reza Hashemi, Christophe A Malbrel: Method of repairing a damaged well. Pall Corporation, Leydig Voit & Mayer, June 8, 1999: US05909773 (36 worldwide citation)

A damage-resistant filter for use in subterranean wells has at least one layer of a filter medium, such as a sintered supported porous membrane, coaxially disposed about a perforated support member. The filter may also include a drainage layer disposed between the inner support member and the filter ...


3
Reza Hashemi, Christophe A Malbrel: Method and apparatus for oil or gas well cleaning. Pall Corporation, Leydig Voit & Mayer, October 17, 1995: US05458198 (26 worldwide citation)

An oil or gas well cleaning method includes inserting tubing, such as a coiled tubing, into a well bore, for example, into a production pipe in a well bore. A cleaning fluid containing a flocculant is passed into the well and the flocculant in the cleaning fluid is mixed with solid particles in the ...


4
Christophe A Malbrel, Reza Hashemi: Method of cleaning an oil or gas well. Pall Corporation, Leydig Voit & Mayer, August 8, 1995: US05439058 (10 worldwide citation)

A method of cleaning an oil or gas well includes mixing a caustic with a saline solution to precipitate hydroxide species from the saline solution and form a milky suspension. The suspension is contacted with contaminants in a well bore to entrap the contaminants. A polymeric flocculant is then mixe ...


5
Mohammad Reza Khattaty, Khaled Forsat, Reza Hashemi, Hossein Manafi Varkiani: Process for removing sulfur particles from an aqueous catalyst solution and for removing hydrogen sulfide and recovering sulfur from a gas stream. Research Institute of Petroleum, Kenyon & Kenyon, November 20, 2007: US07297651 (4 worldwide citation)

The invention relates to a process for removing sulfur particles from an aqueous catalyst solution used to remove hydrogen sulfide from a gas stream (1, 5), comprising the steps of directing a flow of a suspension (12) comprising reduced catalyst solution and sulfur particles to an oxidizer zone (20 ...


6
Salambek Naibovich Khadzhiev, Khusain Magamedovich Kadiev, Vahid Khumaidovich Mezhidov, Jamshid Zarkesh, Reza Hashemi, Seyed Kamal Masoudian Targhi: Process for hydroconverting of a heavy hydrocarbonaceous feedstock. Research Institute of Petroleum, NTI Company, Kenyon & Kenyon, September 8, 2009: US07585406 (4 worldwide citation)

A Process for hydroconverting of a heavy hydrocarbonaceous feedstock comprising a catalyst to produce lower boiling hydrocarbon products. The method can be used for the high- boiling point residues of oil refining (asphaltene, the residues of vacuum and under pressure distillation of oil, and the us ...


7
Mohammad Reza Khattaty, Khaled Forsat, Reza Hashemi, Manafi Varkiani Hossein: Process for removing sulfur particles from an aqueous catalyst solution and for removing hydrogen sulfide and recovering sulfur from a gas stream. Research Institute of Petroleum, Kenyon & Kenyon, September 2, 2008: US07419652 (3 worldwide citation)

The invention relates to a process for removing hydrogen sulfide and recovering sulfur from a gas stream, comprising the steps of: contacting said gas stream with an aqueous catalyst solution of a polyvalent metal redox catalyst in a contacting zone to absorb said hydrogen sulfide and form a reduced ...


8
Salambek Naibovich Khadjiev, Khusain Magamedovich Kadiev, Vahid Khumaidovich Mezhidov, Jamshid Zarkesh, Reza Hashemi, Seyed Kamal Masoudian Toroghi: Process for hydroconverting of a heavy hydrocarbonaceous feedstock. Res Inst Of Petroleum, Nti Company, February 21, 2007: EP1754770-A1 (1 worldwide citation)

A Process for hydroconverting of a heavy hydrocarbonaceous feedstock comprising a catalyst to produce lower boiling hydrocarbon products. The method can be used for the high- boiling point residues of oil refining (asphaltene, the residues of vacuum and under pressure distillation of oil, and the us ...


9
Hamid Reza Hashemi: Apparatus for heating a nozzle with radiant energy. Mold Masters, Ridout & Maybee, January 9, 2007: US07160101

A system and method provide an injection molding apparatus utilizing radiation energy as a heat source. The injection molding apparatus may includes at least a partially transparent nozzle or may include a thermally conductive nozzle having a nozzle body and a nozzle channel that receives a fluid ma ...


10
Reza Hashemi, Christophe H Malbrel: Method and apparatus for oil or gas well cleaning. Pall Corporation, CUI YOUPING ZHANG SHEGAO, November 1, 1995: CN94190374

An oil or gas well cleaning method includes inserting tubing into a well bore (10), for example, into a production pipe (30) in a well bore. A cleaning fluid containing a flocculant is passed into the well and the flocculant in the cleaning fluid is mixed with solid particles (11) in the well bore ( ...