高含硫气藏开发技术进展与发展方向

四川盆地已探明高含硫天然气储量超过9 000×10⁸m³，占全国同类天然气储量的比例超过90%。作为中国高含硫天然气开发的主战场，四川盆地已有近47年的高含硫气藏开发历史，积累了丰富的开发成果和技术经验，同时“走出去”支持海外天然气合作开发，代表了中国高含硫气藏开发的最高水平，并引领我国高含硫气藏开发的技术发展方向。分析了高含硫气藏开发的特点与难点，总结了高含硫气藏开发方面形成的28项开发特色技术，指出了技术发展方向。

Progress in and developing orientation of technologies for the recovery and production of high-sulfur gas reservoirs in China

The proved high sulfur gas reserves are over 9000×10⁸ m³ in the Sichuan Basin, accounting for more than 90% of the cumulative national gas reserves of the same kind. Over the past nearly 47 years, the operators in the Sichuan Basin as the main field of high sulfur gas exploitation in China have collected rich technical experience and obtained numerous achievements, which can represent the most advanced level for China in the development of high sulfur gas reservoirs and provide guidance for the developing trend in this domain in the future. To further promote the cooperative project of the Right Bank of the Amy Darya River in the Turkmenistan, we analyzed the characteristics and difficulties of high sulfur gas reservoir development. (1) The complexity of geological features of this type reservoirs leads to an extremely high requirement for the involved technologies. (2) Stringent demand has to be first considered for both geographical environment and human settlements. (3) The pre development evaluation quality is required to be perfect. (4) Safety guarantee and cost control are also great challenge. (5) The real time HSE assessment and control techniques have to be guaranteed as well. This paper also summarizes about 28 items of specific technologies of the PetroChina Southwest Company in the past years of producing high sulfur gas in the Sichuan Basin in terms of high sulfur gas reservoir evaluation and development mode optimization, safe drilling and completion, gas production, ground gas gathering & transportation and corrosion control, natural gas sweetening process, HSE, etc. Furthermore, the developing trend for the related technologies is pointed out and technical difficulties await us to overcome in the domains of geology and gas reservoir engineering, drilling and completion engineering, ground gathering & transportation and corrosion control, natural gas sweetening, and HSE; only in this way will a sustained high level be kept of technologies for high sulfur reservoir development.