关键词: 一体化装置; 天然气; 集气; 橇装

Abstract: Integrated natural gas gathering unit was developed to solve the bottlenecks facing Changqing gas field, such as short construction time and difficult control over high investment. The procedure and operational management of digital gas-gathering station (GGS) at Sulige gas field were analyzed in research and development of the unit, integrating and optimizing functions of different process areas of the digital GGS. A new three-way valve and a knock-out drum were developed while a series of units was integrated into a skid, such as various pipes, process equipment, pressure vessels, intelligent control system and electrical devices. The unit was mainly used for gas-liquid separation, switching, flashing, automatic drainage, metering, pigging and fuel gas supply. It is suitable for a non-acidic GGS with medium to low pressure. It could replace a conventional non-pressurized GGS of a gas field. With the unit applied, the construction period of a GGS was shortened for more than 12 days and the land use was reduced by more than 35 percent as compared to a digital GGS. The engineering investment for a single GGS could be reduced by more than 1 million yuan.

Key words: integrated unit, natural gas, gas gathering, skid-mounted