Flowing Bottomhole Pressure Calculation for a Pumped Well under Multiphase Flow
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The ability to monitore bottomhole flowing pressure in pumping oil wells provides important information regarding both reservoir and artificial lift performance. Converting surface pressure measurements to bottomhole is currently accomplished by locating the fluid level in the annulus using a sonic device and then applying a correlation to estimate the density of the gas-cut liquid column above the perforations. This work proposes a flowing bottomhole pressure calculation procedure from fluid level measurements. The model is developed from experimental work and from theoretical arguments. The calculation procedure developed allows to calculate BHP without shutting the well, which is common for fluid level casinghead pressure measurements. Also this method allows to take into account real geometry of the The comparison of the calculated and measured pump intake pressure shows good accuracy of a technique. It allows to draw a conclusion for an opportunity to use this method in practice.
6 pages, 3 figures
6 pages, 3 figures