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大斜度注水井大修打捞技术研究

China Petroleum and Chemical Standard and Quality(2021)

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Abstract
渤海油田受海上地理位置限制,常常采用大斜度定向井完井开采,且长期分层开采、分层注水导致部分油田各层位层间压力差异较大,大修作业过程中常常会出现溢流、井漏、上吐下泻、层间出砂等异常情况.在实际大修施工过程中,需充分辨认相关现象和风险,保证施工的安全性与连续性.以近年渤海油田一口层间干扰严重的大斜度井为例,探讨此类井大修打捞的工艺优化思路与经验,对以后海上油田大斜度注水井大修打捞具有一定指导意义.
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