巴西深水盐下钻完井配套技术与降本增效措施

China Offshore Oil and Gas(2017)

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Abstract
自2006年巴西超深水海域发现巨型盐下油田以来,深水盐下钻完井技术取得了显著进步.本文总结了巴西深水盐下钻完井面临巨厚盐岩层蠕动危害大、灰岩储层漏失严重、地层可钻性差、超深水钻井装备可靠性及应急管理挑战、巨厚储层完井严重漏失等难题,阐述了盐层段安全钻井及套管设计、控制压力钻井技术、钻井工具及工艺优化提高钻速技术、深水应急专项技术、大尺寸智能完井技术等深水盐下钻完井配套技术,并梳理了深水盐下L油田降本增效举措,最后展望了超深水无隔水管钻井、完井管柱湿式解脱工具、混合式智能完井控制系统等深水盐下钻完井新技术,以期为国内深水油气田钻完井技术发展提供借鉴.
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Key words
Brazil,deep water,pre-salt drilling and completion,technical challenges,matching technologies,cost reduction,L oifield
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