摘要
中国华北地区的碳酸盐岩热储层是优质的地热资源储层,由于储层内部裂缝发育,钻井过程中常伴有严重的钻井液漏失,导致钻屑堵塞地层内的渗流通道,影响地热井的出水量。本文根据气举-酸化联合洗井技术在南华北地区地热井的实际应用情况,对该技术的基本原理、施工方法和应用效果进行了说明,同时探讨了注气泵压和注气方式对洗井效果的影响,综合考虑各类因素得出适用于实际生产的洗井技术参数,对指导地热资源开发具有一定的实用价值。
Carbonate thermal reservoirs in North China are high-quality geothermal resource reservoirs. Due to the development of internal fractures in the reservoirs, serious loss of drilling fluid are often accompanied in drilling process, resulting in drilling cuttings blocking the seepage channels in the formation, and influencing the output of geothermal wells. Based on the practical application of gas lift-acidification combined well-cleaning technology in geothermal wells in South China and North China, the basic principles, construction methods and application effects of this technology are described. At the same time, the influence of gas injection pumping and gas injection on the well-cleaning effect is discussed, and comprehensively considering various factors, the technical parameters of well washing suitable for actual production are obtained, which has a certain practical value on the development of geothermal resources.
作者
凌安航
谭扬军
LING An-hang;TAN Yang-jun(Sinopec Star Co.,Ltd.,Beijing 100083,China;Sinopec Star（Beijing）New Energy Research Institute Co.,Ltd.,Beijing 100083,China)
出处
《价值工程》
2018年第21期139-140,共2页
Value Engineering
关键词
地热资源
碳酸盐岩热储
洗井
geothermal resources
carbonate rock thermal storage
well cleaning
