Abstract: The invention relates to a process for improving the characteristics of a fluid and in particular of a cement slurry for the cementing of wells, particularly of oil wells, wherein it consists in applying to this fluid an energy of between 4.8 and 6.3 kJ/kg, by incorporating adapted pressure drops, in line, before the well head and at the outlet of a high-pressure pump, said pressure drops being substantially independent of the flowrate. The invention also relates to a device for carrying out this process.

Abstract: The invention relates to a process for improving the characteristics of a fluid and in particular of a cement slurry for the cementing of wells, particularly of oil wells, wherein it consists in applying to this fluid an energy of between 4.8 and 6.3 kJ/kg, by incorporating adapted pressure drops, in line, before the well head and at the outlet of a high-pressure pump, said pressure drops being substantially independent of the flowrate. The invention also relates to a device for carrying out this process.

Abstract: A funicular type transport device including a variation chain and at least one tractor chain. The variation chain includes a plurality of variation links of variable length forming a continuous loop and a plurality of mobiles interconnected with the plurality of variation links. Each of the plurality of mobile components is provided with an interconnection device selectively engageable with the at least one tractor chain. A sensor measures the tension in the variation chain. A control device responds to the sensor to maintain the tension in the variation chain below a predetermined maximum level.