Abstract
The MRA platform is one of the offshore platforms located in the north of the Java Sea. The MRA platform has 4 production wells, namely MRA-2ST, MRA-4ST, MRA-5, and MRA-6 wells. The 4 production wells are produced using an artificial lift in the form of a gas lift. The limited gas lift at the MRA Platform at 3.1 MMSCFD makes the production of wells at the MRA Platform not optimal because the wells in the MRA Platform are experiencing insufficient gas lift. Optimization of gas lift injection is obtained by redistribution of gas lift injection for each. The results of the analysis in this study indicate that the optimum gas lift injection for the MRA-2ST well is 0.5552 MMSCFD, the MRA-6 well is 1.0445 MMSCFD, the MRA-5 well is 0.7657 MMSCFD, finally the MRA-4ST well with gas injection. lift is 0.7346 MMSCFD. The manual gas lift in the MRA-4ST is also replaced based on an economic feasibility analysis to ensure that the gas lift injection for each well can be kept constant. The redistribution of gas lift carried out by the author has increased the total production rate of the MRA Platform by 11,160 BO/year or approximately USD 781,200/year. Keywords: Gas lift; Insufficient; Optimization
Highlights
(Khamehchi, 2017) The gas lift method uses the gas injection method
(Mayhill, 1974) Evaluation and optimization of the gas lift well production begin with evaluating the gas lift performance curve as the basis for the gas injection optimization method
The rate of gas injected into the well (n-1) is the remaining gas injected into the well (n) so that it can be directly determined how much gas is allocated for (n-1), as a function of the rate of gas injection injected into the well (n). -1), so on until the total injection gas is injected into the last well
Summary
(Khamehchi, 2017) The gas lift method uses the gas injection method. The gas is injected through the annulus the gas enters the tubing through the GLV and mixes with the hydrocarbon fluid. A gas injection rate that is too high can cause a slippage effect where the gas will move faster than the fluid so that the rate of oil production will decrease. This occurs when the gas injection rate has passed the optimum limit. Excessive gas injection rate will cause a slippage effect where the gas phase will move faster than the liquid phase This will lead to reduced profitability even to a decrease in production. Prepared to simplify the Equal Slope Optimization method, so that the optimum allocation of injection gas for all wells can be obtained directly and without doing iterations in the form of trial scenarios or graphical methods. From the research references described above, the Ricky Model is chosen because it is one of the methods that can determine the optimum gas injection rate with the amount of gas injection available, the manual gas lift valve in the MRA4ST is replaced based on an economic feasibility analysis to ensure that gas injection for each well can be kept constant
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