1
Jose Ferreira
Jose Luiz Arias Vidal, Manoel Felician da Silva Júnior, Ricardo Munoz Freitas, Arthur Martins Barbosa Braga, Luiz Carlos Guedes Valente, Rogério Dias Regazzi, Alexandre Sant Anna Ribeiro, Lincoln Homero Thomé Ferreira, Joao Luiz dos Santos Lorenzo: Optical transducer and method for the simultaneous measurement of pressure and temperature in oil and gas wells. Petroleo Brasileiro Petrobras, Nixon & Vanderhye PC, December 11, 2007: US07308165 (9 worldwide citation)

An optical transducer 100, 200 and method for the simultaneous measurement of downhole pressure and temperature in a single- or multi-point configuration including a body 10a/10b with an elastic membrane 50 onto which at least one Bragg grating 60a/60b is attached, and at least an additional Bragg g ...


2
Carlos Alberto D C Goncalves: Process of electric pipeline heating utilizing heating elements inserted in pipelines. Petroleo Brasileiro Petrobras, Sughrue Mion Zinn Macpeak & Seas, January 26, 1993: US05182792 (237 worldwide citation)

A process to clear pipelines carrying fluids viscous and/or rich in organic residues includes the introduction of a heating element inside a pipeline carrying the fluids through a coupling spool which is intercalated in the fluid-carrying pipeline. Simultaneously an electric current is applied to th ...


3
Carlos N Khalil, Zadson de Franco: Continuous process of hydraulic fracturing with foam. Petroleo Brasileiro Petrobras, Sughrue Mion Zinn Macpeak & Seas, July 11, 1989: US04846277 (86 worldwide citation)

A continuous process of hydraulic fracturing of a well with in situ nitrogen foam generation, comprising the steps of:


4
Gomes Jefferson Roberto, Da, Silva Raissa Maria Cotta Ferreira, Oddone Rogerio, Ferreira de, Souza Adriana, Fernandes Nelmo Furtado: Process for hydroconversion of a mixture of organic oils of different origins. Petroleo Brasileiro Petrobras, Benson John Everett, Gomes Jefferson Roberto, Da, Silva Raissa Maria Cotta Ferreira, Oddone Rogerio, Ferreira de, Souza Adriana, Fernandes Nelmo Furtado, BENSON John Everett, November 8, 2007: WO/2007/125332 (69 worldwide citation)

A process is described for hydroconversion of a mixture of organic oils of different origins in a conventional hydrotreatment unit, constituted by at least two catalyst beds, under moderately severe process conditions to obtain diesel fuel oil. The process includes injection of a stream of oil of an ...


5
Paulo Cesar Ribeiro Lima, Divonsir Lopes, Fernando Antonio Costa Sidrim: Method and equipment for the flow of offshore oil production. Petroleo Brasileiro Petrobras, Nixon & Vanderhye PC, June 27, 2000: US06079498 (61 worldwide citation)

This invention relates to a method and equipment to assist the flow of offshore oil production. At least three production flow lines are used, which are interconnected close to offshore well-heads or manifolds forming two U-shaped lengths of pipe acting as circuits for passage of the hydrocarbon mix ...


6
Luiz Cesar Ferreira Barbosa, Sérgio Luiz Pereira De Freitas Coelho, Carlos Roberto Carvalho De Holleben, Geraldo Maria Ramos De Godoy: Process for the reduction of the relative permeability to water in oil-bearing formations. Petroleo Brasileiro Petrobras, Sughrue Mion PLLC, November 5, 2002: US06474413 (58 worldwide citation)

A process for the selective and controlled reduction of permeability to water in oil-bearing formations made up of sandstone or limestone, the process comprising the injection of a slug of polymer aqueous solutions having a polarity opposite to the polarity of the rock, followed by the injection of ...


7
Rolf Dieter Behling, Klaus Viktor Peinemann, L acute over: Process for the separation/recovery of gases. GKSS Forschungszentrum Geesthacht, Petroleo Brasileiro Petrobras, Sughrue Mion Zinn Macpeak & Seas PLLC, January 30, 2001: US06179900 (52 worldwide citation)

A process for the separation/recovery of gases is described where the desired component to be separated from the gaseous mixture is present in low/very low molar amount and/or low/moderate pressure, the process comprising contacting the gaseous mixture with a separation membrane unit containing high ...


8
Carlos Nagib Khalil, Nelson De Oliveira Rocha, Lucia Cristina Ferreira Leite: Process for the thermo-hydraulic control of gas hydrates. Petroleo Brasileiro Petrobras, Sughrue Mion Zinn Macpeak & Seas PLLC, March 14, 2000: US06035933 (40 worldwide citation)

A process for the thermo-hydraulic control of gas hydrates in subsea production and injection wells as well as pipelines which transport liquid or gaseous hydrocarbons is described, the process making use of a Nitrogen Generating System foamed or in solution. The control may signify the prevention o ...


9
Wilhelm Bruening, Inai M R de Andrade Bruening, Francisco J Martinez Concha: Apparatus for the determination of chemical compounds by chemiluminescence with ozone. Petroleo Brasileiro Petrobras, Sughrue Rothwell Mion Zinn and Macpeak, March 18, 1980: US04193963 (37 worldwide citation)

The invention relates to a process and detector for determining organic and inorganic chemical substances by chemiluminescence with ozone, the selectivity and specificness of the detector being a function of the degree of reactivity of the chemical substances with ozone in distinct temperature range ...


10
Marcelo Jose Barbosa Teixeira, Kazuhiko Kochi: Method and apparatus for connecting an underwater flexible riser to a structure on the surface. Petroleo Brasileiro Petrobras, Nixon & Vanderhye P C, September 7, 1999: US05947642 (33 worldwide citation)

The present invention relates to an apparatus and to a method for facilitating the connection of underwater flexible risers coming from the sea bed at any point located above the sea surface on a surface structure. Two principal components are used, namely a guide device (1,51), and a connection dev ...