TECHNOECONOMY ANALYSIS OF COMPRESSOR STATION ON RECYCLE LINE AND JUMPER LINE OPERATION MODE

• Main Author: Suharnes, Dito
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/83066
• Institution: Institut Teknologi Bandung

X gas well was projected to decline its production capacity until 2030. This reduction will affect the whole natural gas transmission system, especially compressor stations. The production capacity exceeds the minimum allowable flow rate of compressor so that surging phenomena tend to appear. Two solutions to overcome this condition are recycle operation mode or jumper line operation mode. In technical analysis, using Aspen Hysys software, modeling was done to estimate the change of compressor station operating conditions when these two operation modes were carried out. Based on modeling result, economic analysis was done to estimate operational expenses when one of these two operation modes were carried out. Recycling some amount of gas will increase compressor suction temperature. At 800 psig station output pressure, increase of compressor suction temperature will increase compressor power by 83 hp compared to normal condition at 82.5 MMSCFD. Increase of compressor power will also increase gas turbine fuel consumption to 1.082 MMSCFD. At the same output pressure, compressor discharge pressure will increase to 215 °F. Compressor station operational expense is projected to be Rp231.548.322,00/day or equivalent to 2.41 MMSCFD gas sold. 1 train minimum capacity scenario is the most economic operating scenario for this compressor station. In this scenario, compressor suction temperature is projected to decrease to 72 °F. At 800 psig station output pressure, compressor power will decrease by 63 hp compared to normal condition. As a result, gas turbine fuel consumption will decrease to 1.061 MMSCFD. At the same station output pressure, compressor discharge pressure is projected to decrease to 215 °F. Compressor station operational expense is projected to be Rp229.529.612,00/hari or equivalent to 2.39 MMSCFD gas sold