Comparative appraisal of various types of pulsation bottles used in oil and gas separators
The paper presents six types of pulsation bottles, namely, leveling devices (LD), without gas withdrawal, inclined pipe pulsation bottles with gas withdrawal – devices of preliminary gas withdrawal (DPGW); horizontal pulsation bottles – flow distributors (PBFD), pulsation bottles of flow distribution (PBFD),with gas withdrawal. Leveling devices usage violates the process of emulsion division into oil and water due to plugs formed under liquid emulsion surface. The paper considers usage of two types of inclined and three types of horizontal pulsation bottles as well as gives comparative appraisal of devices of preliminary gas withdrawal (DPGW) and pulsation bottles of flow distribution (PBFD) for 51 typical sizes of standardized oil and gas separators (OGS) and oil and gas separators with water withdrawal (OGSWW). The basic parameters, such as pulsation bottle length and height, cross section square and height of liquid plugs lifting in a mixing pipeline, and at last, pulsation bottle price, guarantee 2...3 times less size of pulsation bottles of flow distribution (PBFD) than that of devices of preliminary gas withdrawal (DPGW). Advantages of pulsation bottles of flow distribution (PBFD) are justified by remarkably less overall dimensions, usage of Venturi nozzle, essentially large length of pipes between gas collector and mixture collector, availability of regulated liquid discharge and gas withdrawal after liquid degasification.