凝析气田外输气烃露点控制方法研究.pdfVIP

学兔兔学兔兔 石 油 与 天 然 气 化 工 第44卷 第3期 CHEMICAL ENGINEERING OF OIL＆ GAS 19 凝析气田外输气烃露点控制方法研究 马国光 董文浩 马俊杰 温 许培林 曹迪 1．“油气藏地质及开发工程”国家重点实验室·西南石油大 学 2．中国石油集团川庆钻探工程有限公司 摘 要 凝析气田普遍为高压气田，处理厂采用传统的节流阀制冷控制外输气烃露点工艺，在气田 开发后期出现不适应性现象。为了进一步提高处理工艺对气田开发的适应性，提出了用透平膨胀机代 替节流阀制冷以控制烃露点的工艺。通过对节流阀制冷脱烃工艺和透平膨胀机制冷脱烃工艺的对比分 析认为，透平膨胀机低温脱烃工艺不仅能降低集输压力，延迟工艺调整的时间，而且降低了工程建设投 资及能耗，具有较强的适应性，可为其他凝析气田处理工艺设计提供新的思路。 关键词 凝析气 节流阀制冷 透平膨胀机 烃露点 中图分类号：TE868 文献标志码：A DOI：10．3969／j．issn．1007—3426．2015．03．004 Research on hydrocarbon dew point control method of output gas in condensate gas field Ma Guoguang ，Dong Wenhao ，Ma Junjie ，Wen Xin ，Xu Peilin ，Cao Di (1．State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation，Southwest Petroleum University， Chengdu 610500，China；2．CNPC Chuanqing Drilling Engineering Co．Ltd．，Chengdu 610051，China) Abstract：Most of condensate gas fields are high—pressure gas field．Traditional throttle refrigera— tion de—hydrocarbon process shows inadaptability during the later period of gas field development．In order to improve the adaptability of treatment process，the scheme of replacing the throttle with tur— bine expander was proposed tO control hydrocarbon dew point．By the comparison and analysis of the two processes，it was concluded that the expansion turbine low temperature de—hydrocarbon process could not only reduce the gathering pressure and delay process modification time，but also lower the engineering investment and energy consumption．Therefore，it provides a new idea for process design of the condensate gas field． Key words：condensate gas