Modify Chock Performance Equation for Tertiary Reservoir Wells in Khabaz Oil Field

[摘要] Gilbert correlation has been modified to determine the performance of multiphase fluid-flow through the wellhead and choke. The modification present two sets of new correlations based on statistical analysis of 33 production tests data from 12 wells produce from Tertiary Reservoir in Khabaz oil field, first correlation is modified of Gilbert equation to predict liquid flow rates as a function of wellhead flowing pressure, gas-liquid ratio and choke size, the second correlation takes the effect of water cut and sediment (BS & W) as an effective parameter to minimize error. A comparison between the results of each correlation with measured date has been made to select the best correlation to predict flow rate in newly drilled wells. The oil flow rates predicted by the new correlations show excellent agreement with the measured rates and the second modified Gilbert correlation are found to be closest to all ranges of flow rate variables with an average error of 10 % and R2=0.9493.

[发布机构] North Oil Company, Kirkuk, Iraq^1

[关键词] Effect of water;Effective parameters;Flowing pressures;Gas-liquid ratio;Liquid flow rates;Multi-phase fluid flow;New correlations;Production test