普光气田地面集输系统硫沉积原因分析及对策  

REASON OF SULFUR DEPOSITION IN SURFACE GATHERING SYSTEM OF PUGUANG GASFIELD AND ITS COUNTERMEASURE

作　　者：李宁[1] 何洋[2] 任斌[1] 郭冬冬[3] 姜敏[1] 

机构地区：[1]中国石化西北油田分公司油气运销部 [2]中国石化中原油田普光分公司采气厂 [3]中国石化中原油田分公司油气储运管理处

出　　处：《天然气勘探与开发》2012年第3期69-72,共4页Natural Gas Exploration and Development

摘　　要：普光气田所产天然气富含H2S和CO2,自投产以来,地面集输管线和设备装置硫沉积现象较为普遍,往往造成分酸分离器压差过大、节流阀堵塞、排液不畅等问题,直接影响到气井正常生产。通过对硫堵情况较为严重的P3011-1井进行现场勘察和原因分析,依托集气站原有流程利用硫溶剂加注配套工艺对广泛存在于地面集输管线和设备装置的单质硫及其混合物进行溶解清洗,2011年1月31日～2011年2月4日对P3011-1井进行了现场硫溶剂加注作业,最终使分酸分离器前后压差恢复至正常范围,下游集输管线及设施硫沉积现象基本消除,外输天然气气质得到改善,效果较为明显,硫溶剂加注配套工艺的成功应用,为普光及其它同类气田解决分酸分离器硫堵问题提供了宝贵的经验及可借鉴的技术手段,具有较强的推广价值和应用前景。Natural gas from Puguang gasfield is rich in H2S and CO2.Since the field commissioned,sulfur deposition has existed widely in surface gathering system.That results in big pressure difference of acid trap separator,throttle valve plugging and slow flowing back.These problems can have negative effects on normal production.According to the spot reconnaissance and analysis on serious sulfur plugging of P3011-1 well,based on the original process of gas gathering station,the widely existed elemental sulfur and its mixture are washed and dissolved by sulfur solvent injecting matching technology.From Jan.31st to Feb.4th,2011,sulfur solvent injecting process was done for the well.Finally the pressure difference of acid trap separator returned to normality.The sulfur deposition was eliminated basically and the quality of outer transporting gas was improved obviously.The successful application of the matching technology provides experiences for solving sulfur plugging in Puguang gasfield and other similar ones.

关 键 词：普光气田 硫沉积 分酸分离器 硫溶剂加注配套工艺 效果 

分 类 号：TE866[石油与天然气工程—油气储运工程]