连续油管酸洗在WAA-1井应用效果评价

Application effect evaluation of coiled tubing acid washing in Well WAA-1

袁辉 杨柳

YUAN Hui YANG Liu

中海石油中国有限公司湛江分公司，广东湛江　524057

Zhanjiang Branch Company of CNOOC Ltd., Zhanjiang 524057, China

针对南海西部油田WAA-1井的实际生产情况，在堵塞机理分析基础上提出了适合该井解堵的连续油管酸洗措施，对连续油管酸洗作业实施背景、方案设计、施工过程及效果进行了阐述。通过对水平井段采取连续油管拖动以及控制连续油管的上提速度和注入排量来实现水平井段均匀布酸；冲洗头通过脉冲震荡,在管柱内产生压力激动作用于筛管，达到深度清洗、解除污染的目的。

Considering the practical production figures and block mechanism analysis of Well WAA-1, the coiled tubing acid washing measure for removing pollution is proposed, and then the operation background, project design, operation process as well as effect evaluation of coiled tubing acid washing treatment are illustrated in this paper. By adopting the way of tripping the coiled tubing and controlling the lift speed and injecting rate, the acidizing fluid can be distributed equally in the horizontal interval. While wash head impulse vibrate, it will produce pressure agitation to screen pipe to wash deeply and remove damage.