November 2020

Maintenance and Reliability

High-pressure gas compressor dry gas seal system enhancement case study

The Khurais producing department (KhPD) consists of four oil trains: each oil train is responsible for receiving, stabilizing and purifying the crude oil from the wells by removing sand, water, gas and hydrogen sulfide (H2S) contents to make the oil ready for use and shipment to refineries.

The Khurais producing department (KhPD) consists of four oil trains: each oil train is responsible for receiving, stabilizing and purifying the crude oil from the wells by removing sand, water, gas and hydrogen sulfide (H2S) contents to make the oil ready for use and shipment to refineries. Each oil train relies on a high-pressure (HP) gas compressor for its processes, making the compressor an important part of production. The HP compressors are fit with a dry gas sealing (DGS) system, which consists of two entering gases: fuel gas to the primary seal, and nitrogen to the separation seal, as seen in FIG. 1. There are two leakage lines: the primary leak line directs the fuel gas to the flare

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