| YH23-2-4侧钻水平井钻井实践 |
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| 引用本文： | 左卫青,闫振来,张佃宾,刘洪亮.YH23-2-4侧钻水平井钻井实践[J].中外能源,2010,15(2):52-55. |
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| 作者姓名： | 左卫青 闫振来 张佃宾 刘洪亮 |
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| 作者单位： | 1. 胜利石油管理局钻井工艺研究院,山东,东营,257017
2. 中国石化胜利油田分公司海洋采油厂,山东,东营,257237 |
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| 摘 要： | 位于新疆牙哈地区的YH23-2-4井是在某直井基础上填井侧钻而成的凝析气田水平井。实钻中,克服了斜井段长、水平位移大、井眼轨迹控制难度大,以及摩阻扭矩大、大斜度井段钻井液携岩困难、钻具疲劳破坏等诸多技术难点,井眼轨道设计采用直—增—增—增—平五段制剖面类型;深井侧钻坚持小钻压、小排量和稳定的工具面的原则,优选适宜的钻具组合;斜井段为满足轨迹对造斜率的需要,选用高速牙轮钻头配合1.75°螺杆钻具及MWD施工;水平段钻进中,合理确定滑动钻进和复合钻进的比例,根据LWD实时测井曲线与邻井测井曲线对比结果,及时调整靶点垂深,控制井眼轨迹在储层中有效穿行,降低钻井风险;采用聚磺类钻井液体系,在膏泥岩地层井底温度升高、井壁缩径、黏切升高、失水量大的情况下,适当提高钻井液密度,并加入一定量的原油和抗高温高压、降低失水量的钻井液材料,以增加钻井液的润滑性和流变性,保证井眼稳定和井下安全。
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| 关 键 词： | YH23—2—4 井侧钻水平井 凝析气田 井眼轨迹控制 |
Drilling Practice of YH23-2-4 Sidetrack Horizontal Well |
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| Zuo Weiqing,Yan Zhenlai,Zhang Dianbin,Liu Hongliang.Drilling Practice of YH23-2-4 Sidetrack Horizontal Well[J].China Foreigh Energy,2010,15(2):52-55. |
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| Authors: | Zuo Weiqing Yan Zhenlai Zhang Dianbin Liu Hongliang |
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| Affiliation: | Zuo Weiqing 1,Yan Zhenlai 1,Zhang Dianbin 1,Liu Hongliang 2 (1.Research Institute of Drilling Technology,Shengli Petroleum Administration Bureau,Dongying Sh,ong 257017,2.Offshore Oil Production Plant,SINOPEC Shengli Oilfield Company,Dongying Sh,ong 257237) |
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| Abstract: | YH23-2-4 well is a sidetrack horizontal one in a condensate field located in Yaha district of Xinjiang,which was a straight one before.Many technical difficulties were overcome during the drillling practice of the well,including long deviated well intervals,long horizontal displacement,difficulty on well path control,and big friction torque,being difficult on carrying rock of the drilling fluid in the deviated well intervals and endurance failure on drilling rig and so on.Well trajectory was designed as fiv... |
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| Keywords: | YH23-2-4 well sidetrack horizontal well condensate field well-path control |
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