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

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

doi:https://doi.org/10.1155/2007/81519

International Journal of Mathematics and Mathematical Sciences

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Research Article | Open Access

Volume 2007 | Article ID 081519 | https://doi.org/10.1155/2007/81519

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

Deni Saepudin,^1,2Edy Soewono,¹Kuntjoro Adji Sidarto,¹Agus Yodi Gunawan,¹Septoratno Siregar,³and Pudjo Sukarno⁴

Academic Editor: Marco Squassina

Received01 Feb 2007

Accepted13 Mar 2007

Published30 Apr 2007

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.

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Copyright

Copyright © 2007 Deni Saepudin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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