Utilization of Continuous Measured Wellhead Pressure for Evaluating Reservoir Properties

Abstract

The study aims at the possible application of continuous measured wellhead pressure and transient wellbore simulator for evaluating reservoir properties. The first step of the programs is to conduct the continuous measurement of fluid flow and pressure at the wellhead. The procedure of obtaining reservoir properties is carried out by giving the measured mass flow rate at the wellhead, wellbore and reservoir data for the specified time length into the simulator. The continuous calculated wellhead pressures then are compared with the respective measured wellhead pressures. In order to get the best matching between calculated and measured wellhead pressure, the reservoir properties, especially the permeability-thickness (kh) are changed to obtain the best reservoir properties (e.g., kh) values. The more measured data and properties are given as input for the simulator, the more accurate will be the calculated results.