第39参第4期 2017年7月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017)04041304
DOI:10.13639/j.odpt.2017.04.004
Vol. 39 No. 4 July 2017
阀式连续循环钻并技术在番禺油田大位移并的应用
田志欣李文金张武辈‘贾银鸽”
1.中海石油（中国)有限公司鲁禹作业公司；2.深刚市远东石油钻采工程有限公司
弓用格式：图志欣，手文金，张式擎，實银码，间式连续循环钻井技术在需高油图大位移并的应用J」，石油钻采工艺 2017,39(4):413-416
摘要：针对备离10-8油田大位移并0215.9mm井段钻井液安全密度窗口窄（最小1.30~1.70g/cm)、需穿趋断层，且上部 0311.2mm稳斜并段长（3508m)、井斜角大（最大达到80°）屑易堆积等问题，引入阅式连续德环钻井技术，结合实例分新了该技术的现场应用效果，总结了出现的问题及改进措施。通过分析需高10-8油田PY10-8-A3并0215.9mm并段的钻并技术难点，阐述了引入连续循环钻并技术的必要性，介绍了该技术的工作原理和主要设备，分新了该钻并技术的作业特点及应用效果。结果表明：全并段钻并液循环当量密度（ECD）变化率小于7.6%，井内循环压力稳定，平均机械钻速高达21.7m/h，并眼清洗效聚良好，安全平稳钻过断层，未发生任何漏跨卡等复杂情况，
关键词：阀式连续循环钻井；大位移井；ECD控制；禺油田
中图分类号：TE52
文献标识码：B
Applicationof valve-type continuous circulation drillingtechnologyto
the extended reach wells in Panyu Oilfield TIAN Zhixin', LI Wenjin', ZHANG Wunian', JIA Yin'ge
1. CNOOC Pany Operating Company, Shenzhen 518067, Garangdong, China;
2. Shenzhen Hirandong Petroleum Drilling and Prodiection Engineering Compary Limited, Shenzhen 518068, Guangdong, Chino
Citation: TIAN Zhixin, LI Wenjin, ZHANG Wunian, JIA Yin'ge. Application of valve-type continuous circulation drilling technol-ogy to the extended reach wells in Panyu Oilfield [J ] . Oil Drilling & Production Technology, 2017, 39(4): 413-416.
Abstract: In Panyu 10-8 Oilfield, the hole section of o215.9 mm in an extended reach well has to run through faults and its safety density window of drilling fluid is narrow (minimum 1.30~1.70 g/cm'). Besides, its angle holding section of O311.2 mm in the upper part is long (3 508 m) with high deviation angle (maximum 80°), and cutting tends to accumulate easily. The valve-type continuous circula tion drilling technology was introduced in this paper. Its filed application results were analyzed based on case study, and the problems and improvement measures were summarized. The necessity to introduce the valve-type continuous circulation drilling technology was illustrated by analyzing the technological difficulties which were encountered during the drilling of o215.9 mm hole section of Well PY10-8-A3 in Panyu 10-8 Oilfield. Then, the working principles and main equipments involved in this technology were introduced, and its operational characteristics and application effects were analyzed. It is indicated that the variance ratio of drilling fluid ECD (Equiv-alent circulation density) in the whole well is less than 7.6%, borehole circulation pressure is stable and average ROP is up to 21.7 m/h. Furthermore, borehole is well cleaned and faults are drilled through safely and smoothly without any leak, collapse or sticking.
Key words: valve-type continuous circulation drilling; extended reach well; ECD control; Panyu Oilfield 阀式连续循环钻井是一项先进的钻井技术【1]，
的当量循环密度，不间断地排出钻屑，减少接单根或
它能在接单根或者立柱期间保持钻并液的连续循环，从而在整个钻进期间减轻或消除压力激动，实现稳定
立柱前的划眼时间，改善钻井液管理和井眼状况，有效避免漏塌卡等复杂情况的发生，提高复杂地层钻井
第一作者：田志欣，2005年毕业于西南石油大学石油工程专业，现从事海泽石油钻完并作业和研究工作，中海油香高作业公司钻完井总
监。通讯地址：(518067)广东深圳中海石油（中国）有限公司鲁禹作业公司。E-mail；tzx_009@163.com
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