Gas-Lift Design to Increase Oil Flow Rate in Well “X” Field “Y” Based on Equilibrium Curve Analysis Design Gas-lift Untuk Peningkatan Laju Alir Minyak Pada Sumur X Lapangan Y Berdasarkan Analisis Equilibrium Curve Section Articles

Abstract

During mid-to late-life of producing wells, reservoir pressure depletion and liquid loading depress is inevitable. While reservoir pressure drop can be difficult to combat furthermore requires large scale solution, a liquid-loaded production well is generally easy to remedied on-site by artificial lift. Artificial lift solution such as electrical submergible pumping, sucker rod pumping, plunger lift or gas lift, to name a few can be applied to tackled these issues. Generally, gas lift worked by decreasing the overall fluid density by mixing a lower density injection gas with the higher density production fluid inside the tubing, decreasing the total hydrostatic pressure thus serving the flow to reach certain distance. Well “X” is a 9000 ft-oil well which has experienced a decrease in flow rate so it was decided to use the gas lift method instead. This paper aims to design gas lift method using combination of graphical and analytical methods. By constructing an equilibrium curve which is the basis for determining the unloading valve depths, 4 unloading valves and 2 extended bracketing valves at depths of 2800, 5220, 5950, 7550, 8050 and 8550 ft are obtained in this paper. In addition, the operational gas lift valve depth point for well “X” is 7550 ft offered a 703 B/D production flow rate.