Maximization of Condensate Production by Revamping of Gas-Oil Separation Plant in Gulf of Suez

Abstract

The present work is a retrofit of the gas processing train of a gas-oil separation plant (GOSP) located in Gulf of Suez in Egypt to produce the NGL. Three modification schemes based on self-refrigeration and external refrigeration of raw natural gas are proposed. Applying either of the mentioned methods causes the heavy components in the raw gas (C4+) to condense and then get separated. Steady-state simulation of the GOSP is conducted using HYSYS software based on the actual plant data. The first and second revamps are based on “self-refrigeration” while the third one relies on “external refrigeration”. The expected outcome of the retrofit schemes is to increase the condensate recovery of GOSP by approximately 10 %. Also adjust the Reid vapor pressure (RVP) of the GOSP condensate product according to export specifications i.e. maximum RVP = 82.74 kPa. The three schemes succeeded to maximize the condensate production and yielded about 9.7 % increase in GOSP condensate product. The RVP issue is managed by addition of re-boiled absorber tower in all schemes (RVP = 65.5 kPa).