Caracas, Venezuela
Caracas, Venezuela

Petróleos de Venezuela, S.A. is the Venezuelan state-owned oil and natural gas company. It has activities in exploration, production, refining and exporting oil, as well as exploration and production of natural gas. Since its founding on 1 January 1976 with the nationalization of the Venezuelan oil industry, PDVSA has dominated the oil industry of Venezuela, the world's fifth largest oil exporter.Oil reserves in Venezuela are the largest in the world, and the state-owned PDVSA provides the government of Venezuela with substantial funding resources. The government of Venezuela treats PDVSA as a cash-cow, and the company only hires political supporters of the president. Between 2004 and 2010 PDVSA contributed $61.4 billion to the government's social development projects. Around half of this went directly to various Bolivarian Missions, with the remainder distributed via the National Development Fund. Incompetence has led to serious inefficiencies and accidents. Wikipedia.


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Patent
Pdvsa | Date: 2015-10-09

A high pressure trap for separating sand and asphaltene from a high pressure stream of oil includes a vessel having a longitudinal axis arranged substantially vertically; an oil inlet for introducing a high pressure stream of oil with entrained sand and asphaltene into the vessel; an impact plate in the vessel and arranged at the inlet so that the high pressure stream of oil impacts the plate such that the entrained sand and asphaltene separate from the stream and collect in a bottom portion of the vessel; and a chemical inlet at the bottom portion for introducing chemicals to contact separated sand and asphaltene in the bottom portion to facilitate removal of the separated sand and apshaltene from the vessel.


Patent
Pdvsa | Date: 2015-10-09

A process for the removal of acid gas from fluid produced from a subterranean formation into a subterranean well includes the steps of producing fluid from the subterranean formation into an area selected from the group consisting of the subterranean well, a production tube in the well, an annular space defined therebetween, and combinations thereof so as to produce a production fluid containing acid gas; and introducing an aqueous solution of an active ingredient selected from the group consisting of Na_(2)CO_(3), NaOH, and combinations thereof into the area so as to contact the aqueous solution with the fluid as the fluid travels from a down-hole production tube to a surface well facility so as to contact the active ingredient with the acid gas and thereby remove the acid gas from the production fluid.


A system for controlling thermal changes using air injection including a coke drum having a cylindrical outer surface, a material surrounding the cylinder defining an annular space between the material and the cylindrical outer surface, and an air injection system communicated with the annular space for introducing air into the annular space. A method of operating the system is also included.


A process for the production of petroleum tar pitch with the using a fresh hydrocarbon feedstock, preheating it, treating the heated feedstock and passing fractionating the treated feedstock into gases, light distillates and a bottom fractionation stream, then dividing the bottom fraction stream into a recycle stream and a cracked fraction stream and using the cracked fraction stream in a reduced pressure distillation tower so that the light cracked fraction is fractionated light vacuum gas oil, heavy vacuum gas oil and a high quality petroleum tar pitch.


A coke drum includes a coke drum vessel having a substantially cylindrical wall and a conical bottom portion; a skirt downwardly depending from a transition of the cylindrical wall into the conical bottom portion, an inner annular space being defined between the skirt and the conical bottom portion; and a fluid injection system communicated with the inner annular space for injecting fluid at a desired temperature to heat or cool the inner annular space. The fluid injection system allows the inner annular space and junction of the skirt with the coke drum vessel to be heated or cooled to minimize temperature difference between these areas and a batch of coke to be introduced into the drum.


A method for controlling filtration loss during drilling to a downhole hydrocarbon bearing formation by drilling with a drilling fluid containing a filtration control additive that is made up of petroleum coke particles impregnated with a cationic surfactant and coated with a butadiene-styrene polymer.


A method for making a nanocatalyst includes the steps of forming a mixture of a catalyst precursor, and a crude oil media, wherein the catalyst precursor is insoluble in the oil media, then heating the mixture in the presence of a stability agent, thereby liberating the catalyst particles from the precursor while the stabilizing agent prevents growth of the catalyst particle so that nanocatalyst particles form and are maintained in the oil media. The resulting catalyst composition as well as a hydroconversion process using the catalyst are also disclosed.


Patent
Pdvsa | Date: 2015-05-29

An aqueous well completion/workover fluid, including a surfactant, at least one salt and an alkaline material, wherein the surfactant comprises a mixture of a phosphate ester and a non ionic ethoxylated alcohol, wherein the fluid has a pH between 6 and 8, and wherein the fluid generates an interfacial tension with crude oil of less than or equal to 1 dyne/cm. The fluid is not harmful to a formation if it penetrates the formation, and further exhibits an excellent detergency which can be beneficial as well.


A method for upgrading a hydrocarbon using active hydrogen, includes the steps of: feeding a hydrocarbon to a two-compartment cell having a first compartment, a second compartment and a membrane dividing the compartments, wherein the hydrocarbon is fed to the first compartment which functions as a chemical compartment; feeding a source of hydrogen to the second compartment which functions as an electrochemical compartment; and pulsing an electric current or cathodic current across the second compartment.


Patent
Pdvsa | Date: 2015-02-05

A regenerable sorbent for the removal of acid gas from a fluid stream. The regenerable sorbent is made from raw materials such as iron mineral, expansive clay and starch. Acid gas is removed from the fluid stream by a process where the raw materials are obtained, crushed, sifted, possibly pelletized, calcined and contacted with the fluid stream containing the acid gas.

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