Intevep, S.a.

Emilio Guevara

Gustavo A Nunez

Mayela Rivero

Konstantin Zagustin

Hercilio Rivas

Ignacio A Layrisse

Maria Luisa Chirinos

Domingo R Polanco

Jose P Salazar

Dan Joseph

Valmore Rodriquez

G Euler Jimenez

Lirio Q De Paz

Nelson Carabano

A conduit for transporting an oil and water mixture wherein the conduit has an inner surface is substantially hydrophilic and oleophobic. The surface is characterized by a water absorption capacity of greater than or equal to about 8% by weight, and by a contact angle with the oil of greater than or equal to about 120.degree.. The inner surface material may be a silica containing concrete composition or a polymeric coating composition. A conduit having such an inner surface is wetted by water so as to inhibit adhesion of oil to the conduit.

Conduit having hydrophilic and oleophobic inner surfaces for oil

A process for the preparation of a natural liquid fuel and, more particularly, a process that allows a high sulfur natural fuel to be converted into energy by combustion with a substantial reduction in sulfur oxide emissions.

Process for the production and burning of a natural-emulsified liquid

A process for transporting viscous oil in a pipeline is described which comprises placing a spherical sealed pig within the pipeline at a desired position; filling a fraction of the pipeline upstream of the pig with a low viscosity fluid such as water; and initiating core flow of a viscous oil such as a heavy or extra heavy crude oil after the first fraction has been filled. The process permits the core-flowed viscous oil to be transported in the same pipeline with a non-core-flowed fluid. To do this, a second pig is placed in the pipeline intermediate the core-flowed viscous oil and the non-core-flowed fluid and a second fraction of the pipeline intermediate the second pig and the core-flowed viscous oil batch is filled with a low viscosity fluid such as water.

Core-annular flow process

The present invention relates to a process for restarting core flow with viscous oil after a long standstill period. The process comprises initiating a flow of low viscosity fluid such as water into an inlet portion of a pipeline; gradually increasing the flow of the low viscosity fluid until a desired steady state condition is reached and initiating a flow of viscous oil into the inlet portion of the pipeline after the steady state condition has been reached.

Process for restarting core flow with very viscous oils after a long

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Caracas, Venezuela

Emilio Guevara