The shale oil wells in the Subei Basin of East China Oil and Gas Field,after hydraulic fracturing,experience large liquid volume,elevated liquid temperature,and high gas-oil ratio at the early stage of production,which all bring certain difficulties to the fluid calibration of the wells,and the existing calibration methods fail to meet the requirements of on-site fluid calibration.Using 3D software modeling and importing the model into ANSYS FLUENT for numerical simulation,this study analyzes the factors influencing liquid rate by simulating the process before and after the surface choke.The main control factors identified include pre-choke pressure,post-choke pressure,choke diameter,and water cut,with their respective weights analyzed.The numerical simulation results are then used for mathematical regression to develop a mathematical model for the liquid rate of self-flowing shale oil wells.Comparing the mathematical model with field data,the model accurately reflects the changes in production parameters and production regimes,providing a certain guidance significance to the fluid volume calibration of self-flowing shale oil wells in the field.This approach can effectively improve the accuracy of the fluid volume calibration and reduce the labor intensity on-site.
NETL
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万方数据
