胜利油田CB26B-ZP1鱼骨状水平分支井钻井技术

Technique of Horizontal Multilateral Well CB26B-ZP1 in Shengli Oilfield

以胜利油田成功设计施工的一口鱼骨状水平4分支井——CB26B-ZP1井为例,从井眼轨迹优化、井身结构设计、钻具组合设计、油气层保护和完井技术等关键要素出发,综合阐述了施工一口鱼骨状水平分支井的技术要点、成功经验以及技术措施。实践表明,胜利油田完全可以依靠自身技术力量设计实施具有自主知识产权的鱼骨状水平分支井,该井的成功,标志着胜利油田在水平分支井钻井研究和应用施工方面取得了重大突破,为今后进一步应用和推广水平分支井钻井、完井技术,提高油井产能提供了重要依据,积累了宝贵经验。

The horizontal multilateral Well CB26B-ZP1 successfully drilled in Shengli Oilfield was used as an example. Technical considerations, successful experiences, and proper measurements were introduced, including wellbore trajectory optimization, casing schematics design, bottom hole assembly design, pay zone protection, and well completion, etc. The results indicate that Shengli Oilfield is able to design and accomplish horizontal multilateral wells by itself. The success of Well CB26B-ZP1 indicates that a significant breakthrough in horizontal multilateral well drilling technology has been achieved, which provides important guidance for extending multilateral drilling technology and well completion technique, and improving well productivity.