Abstract: The water source well of an offshore platform carries a large amount of associated gas during the production process. Since the water treatment system of the platform water source well is not equipped with a degassing device,when the water source well operates at a high frequency,a large amount of associated gas flows into the downstream production equipment. The on-site inclined plate oil skimmer cannot meet the gas treatment and discharge requirements,resulting in partial floor leakage and natural gas overflow from the open-drain breathing port,which brings serious hidden dangers to safety production and also restricts the water supply efficiency of the water source well. It is urgent to study the water treatment process to explore solutions to high gas content in water source wells on offshore platforms. By analyzing the degassing characteristics of the water source well,combined with the existing conditions of the platform,a set of efficient and reliable water source well water degassing device is designed,which realizes the purification of the water source and the recovery of associated natural gas,which provides technical support for the safe and stable operation of the offshore platform. At the same time,the associated gas from the water source well is effectively recovered, creating additional value for the platform.

Key words: water source well, associated gas, degassing device, water purification