• wet crude treatment vessel
    Petroleum - English

    Optimizing Wet Crude Treatment

    Emulsion Treatment Steps In general, the treatment of water emulsions in crude oil consists of 3 stages: emulsion breaking: includes breaking the film that surrounds the water droplet, by the aid of heat and demulsifier. water droplet coalescence: water droplets combine with each other after breaking the emulsion and being free forming big droplets, coalescence is a function of time, when there is enough time; more coalescence happens, this happens with the aid of an electrostatic field and water washing. settling: because of gravity, bigger droplets settles and go downward the vessel. These steps should happen consecutively, the main step of all the process is the coalescence, it is the…

  • Petroleum - English

    Emulsion Treating Part.2

    Emulsion-Treating Methods An emulsion-treating unit or system will use one or more of the methods to aid in destabilizing, coalescence, and/or gravity separation. Each of these treating methods is discussed separately below. Heating. Using heat to treat crude-oil emulsions has four basic benefits: Heat reduces the viscosity of the oil, which allows the water droplets to collide with greater force and to settle more rapidly. Crude-oil viscosities vary widely, and the curves on this chart should be used only in the absence of specific data. If a crude oil’s viscosity is known at two temperatures, it can be approximated at other temperatures by drawing a straight line along those temperature/viscosity points on…

  • emulsion
    Petroleum - English

    Emulsion Treating Part.1

          Most of the world’s oil reservoirs now produce a mixture of oil and water. The liquids are subjected to shear forces through pumps or other lifting methods, or are sheared as they pass through pressure-reducing devices in the production line. The shear forces disperse one liquid into the other with variations in drop size and stability that are related to the shear force encountered and the physicochemical nature of the production stream. Such dispersions commonly are referred to as emulsions, although many are not true emulsions. In a true emulsion, either the drop size must be small enough that forces from thermal collisions with molecules of the continuous phase produce Brownian motion…