安全仪表保护系统(SIS)在高酸气田的应用

普光气田是国内迄今为止规模最大、含H2S和CO2浓度最高的特大型整装海相气田,因H2S具有剧毒、高腐蚀性,SIS系统的运用对保证生产的正常运行及周边居民的安全至关重要。普光气田投产两年多以来,SIS系统工作正常,保障了集输系统的安全平稳运行。通过介绍普光气田SIS系统的组成、结构和功能,系统总结现场运行和管理经验,客观分析SIS系统在火气监控、逻辑关断等方面的作用,为SIS系统在高酸气田生产中的应用提供借鉴,对今后高酸气田的安全开发具有参考意义。

Application of Safety Instrumented System(SIS) in High Sour Gas Field

Puguang Gas Field is an especially large integrated marine gas field in China so far,which has such features as the largest scale and highest H2S and CO2 concentration.Because of highly toxic and highly corrosivity of H2S,application of the safety instrumented system(SIS) to H2S detection is crucial for normal production of the gas field and the safety of surrounding residents.Since Puguang Gas Field was put into production more than two years ago,its SIS system operates properly,which ensures that the gas gathering and transportation system in the field operates safely and smoothly.Introduced are composition,structure and function of the SIS system in Puguang Gas Field,systematically summarized is the experience in its field operation and management,objectively analyzed are effects of the system in fire and gas monitoring,logic shutdown,etc.,which will provide reference for application of SIS system in high sour gas fields and has important guiding significance for safe development of such gas fields in the future.