THE STUDY OF COMPOSITION AND FLOW RATE EFFECT TO FLOW PERFORMANCE IN MAIN LINE GAS FIELD

• Main Author: FAJARRENANINGTYAS (NIM: 22208035), URSULA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24597
• Institution: Institut Teknologi Bandung

Multiphase flow phenomenom can be occurred in several hydrocarbon production systems. This is happen due to the pressure and temperature declines along the <br /> <br /> <br /> pipe. The phenomenom often causes a lot of problems to operator due to liquid condensate built and flow performance declines along the pipe. Liquid condensation is occurred by the multicomponent contained in the wet gas in addition to pressure and temperature decline. This condensation will raise the pressure difference and reduce the gas space inside the pipe. <br /> <br /> <br /> To minimize problems caused by high liquid hold up, a good simulation using a dynamic multiphase esimulator, is conducted to predict the gas condensation in the pipeline. Some variation of the wet gas composition and flowrate are simulated to study the effect of those variations to liquid hold up fraction and flow performance. This information will be helpful for engineer in minimizing the risk of liquid hold up built inside wet pipelines and to determining the right time to do pigging. <br /> <br /> <br /> Variations of wet gas flow rate are 50, 100, 200, 300, 400, 500 MMscf/d and three kinds of gas fluids. The result is at the increasing of flow rate from 50 to <br /> <br /> <br /> 500 MMscf/d, liquid hold up decrease from 0,609 to 0,031, increasing of pressure drop happens from 53,051 psia to 247,648 psia and flow index decrease from <br /> <br /> <br /> 0,162 to 0,754. Minimum flow rate due to flow assurance is 200 MMscf/d with minimum gas velocity at 24,817 ft/s. At composition variation, the more weighted component from 20,04 to 26,61 results in increasing of liquid hold up from 0,013 to 0,082 dan pressure drop increase from 141,126 psia to 205,6325 psia. Slug flow happens in low flow rate, 50 and 100 MMscf/d and cause in increasing of <br /> <br /> <br /> liquid hold up up to 0,609.