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An Investigation on Gas Lift Performance Curve in an Oil-Producing Well

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  • Deni Saepudin
  • Edy Soewono
  • Kuntjoro Adji Sidarto
  • Agus Yodi Gunawan
  • Septoratno Siregar
  • Pudjo Sukarno

Abstract

The main objective in oil production system using gas lift technique is to obtain the optimum gas injection rate which yields the maximum oil production rate. Relationship between gas injection rate and oil production rate is described by a continuous gas lift performance curve (GLPC). Obtaining the optimum gas injection rate is important because excessive gas injection will reduce production rate, and also increase the operation cost. In this paper, we discuss a mathematical model for gas lift technique and the characteristics of the GLPC for a production well, for which one phase (liquid) is flowing in the reservoir, and two phases (liquid and gas) in the tubing. It is shown that in certain physical condition the GLPC exists and is unique. Numerical computations indicate unimodal properties of the GLPC. It is also constructed here a numerical scheme based on genetic algorithm to compute the optimum oil production.

Suggested Citation

  • Deni Saepudin & Edy Soewono & Kuntjoro Adji Sidarto & Agus Yodi Gunawan & Septoratno Siregar & Pudjo Sukarno, 2007. "An Investigation on Gas Lift Performance Curve in an Oil-Producing Well," International Journal of Mathematics and Mathematical Sciences, Hindawi, vol. 2007, pages 1-15, April.
    • Handle: RePEc:hin:jijmms:081519
    DOI: 10.1155/2007/81519
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