Abstract: A method for producing diesel fuel with improved yield and quality by integration of fluidized catalytic cracking (FCC) and hydrocracking (HC), comprising the following stages: arrangement of FCC and HC processes in parallel; feedstock segregation to each of such processes depending on the content of aromatic hydrocarbons; and a fractioning common stage for both output streams from HC and FCC processes, also comprising recycling the unconverted fraction towards the FCC unit.

Abstract: A method for producing diesel fuel with improved yield and quality by integration of fluidized catalytic cracking (FCC) and hydrocracking (HC), comprising the following stages: arrangement of FCC and HC processes in parallel; feedstock segregation to each of such processes depending on the content of aromatic hydrocarbons; and a fractioning common stage for both output streams from HC and FCC processes, also comprising recycling the unconverted fraction towards the FCC unit.

Abstract: The present invention discloses a sucker rod with high resistance to corrosion, to be used preferably in oil wells. Said sucker rod comprises a core of carbon steel, whether alloyed or not, whose surface is coated by a copper base alloy. Said alloy comprises a 50 to 99.9% copper rate. A process for manufacturing said sucker rod is included.

Abstract: The present invention discloses a sucker rod with high resistance to corrosion, to be used preferably in oil wells. Said sucker rod comprises a core of carbon steel, whether alloyed or not, whose surface is coated by a copper base alloy. Said alloy comprises a 50 to 99.9% copper rate. A process for manufacturing said sucker rod is included.

Abstract: The present invention includes an assembly and method to pump fluids produced by a drilled well within a geological formation having a borehole wall fixed by casing. The invention includes a subsurface pump having a stationary member and a mobile member. A pump anchor fixes the pump to the well casing. A hollow continuous tube or coiled tubing extends within the well bore from the surface down to the lower portion of the well bore. The bottom end of the coiled tubing is connected to the mobile member of the pump. Preferably, the coiled tubing can be coiled and uncoiled from a reel located on the surface. A hollow polished rod has a bottom end coupled to a free top end of the coiled tubing. The hollow polished rod is connected to means to operate the hollow rod according to a selected movement, preferably reciprocating axial movement. The pumped fluids are recovered on the surface from the hollow polished rod and coiled tubing.

Abstract: A process for the obtention of low impurity cyclohexane content, practically methylcyclopentane (MCP) free, by catalytic hydrogenation of benzene in gas phase in the presence of group VIII metal catalyzers. The catalytic hydrogenation is performed in the presence of ammonia or nitrogenated organic basis as MCP formation inhibitors, being incorporated in a 0.2 to 100 ppm concentration.