钻井液与完井液2012，Vol.29Issue(6)：79-81,3.
桃平1井钻井液技术
摘要
Abstract
The well of Taopingl is one of the 30 key exploration horizontal wells of CNPC, it is also the first exploration horizontal well without pilot hole to drill Xiagu Ma5-5 formation in Changqing oilfield. The operation of drilling fluid has many challenges because of the most simplified structure, the inclined open hole of 3,950 m long that is combined of many sets of coal layer, and using Halliburton FEWD from the kick-off point. The compound salt polysulfonate drilling fluid system is applied in this well to avoid collapsing and PDC bit balling in Shiqianfeng and Shihezi formations. For the first time, the plugging material G314-FDJ is used to drill through Taiyuan and Benxi coal layers safely with drilling fluid density of 1.23g/cm3 (normal density is over 1.30 g/cm3) that can prevent lost circulation in Liujiagou formation. In horizontal section, the clay-free temporary plugging drilling fluid system is used to ensure drilling fast and casing safety.关键词
气井/水平井/井眼稳定/煤层防塌/聚磺钻井液/防塌封堵剂/复合盐Key words
Gas well/ Horizontal well/ Xiagu/ Anti-collapsing and sealing additive/ Compound salt/ Anti-collapsing of coal layer分类
能源科技引用本文复制引用
李宝军,贾俊,张建斌,陈恩让,赵海峰..桃平1井钻井液技术[J].钻井液与完井液,2012,29(6):79-81,3.基金项目
长庆气田下古储层水平井、分支水平井钻完井技术研究与应用(川庆公司项目,CQ2012C-6-1-3). （川庆公司项目,CQ2012C-6-1-3）
