宁216H21-2页岩气井钻井关键技术
Science and Technology & Innovation（2020）
Abstract
宁216H21-2井是部署在四川长宁背斜构造中奥顶构造南翼的一口重点页岩气评价井,该井在钻探过程中受构造变化大、断层发育、地层重复等因素影响,钻井施工难度大.针对施工复杂、频繁井漏、地层可钻性差等难点,采取雾化钻井、优化堵漏措施、优选钻头、优选钻井液体系等技术措施,顺利完成该井施工任务,为宁216区块页岩气井钻井积累了宝贵经验.
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