#TITLE_ALTERNATIVE#

• Main Author: Dewi Rahmawati (NIM: 201 050 18), Silvya
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/6776
• Institution: Institut Teknologi Bandung

Abstract: <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> Gas Lift method is one of the most frequently used artificial lift methods in petroleum industries. The principle of this method is to maintain low bottomhole pressure by injecting high pressure gas into the annulus, in order to enable the reservoir fluid to be delivered to the surface. Dual continuous gas lift is one type of gas lift installation. This method is appropriate for building one well system of two adjusted wells. Based on the field experiences, excessive gas usage frequently occurs in oil fields which are using dual gas lift well installation. Due to the high price of natural gas, this condition forces the oil company to optimize their gas consumption for injection. Gas Lift production is represented by Gas Lift Performance Curve which mathematically could be evaluated using fluid flow equation in the tubing and the formation. Those systems of equation are evaluated using Runge Kutta 4th order and shooting method. This approached is applied for each string in the dual gas lift wells. However, similar to the case of single string gas lift method, this method mostly experiencing production instability. These problems occur due to hydrodynamics instability that resulting cyclic variations in well head pressure, oil <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> production and gas injection rate. The objective of this research is to maximize oil production by proper gas allocation injection, taking into account production stability and equal production slope, using genetic algorithm. The results of optimization gas injection allocation using genetic algorithms are shown for given field data.