第39参第2期 2017年3月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017)020169-07
DOI:10.13639/j-odpt.2017.02.008
Vol. 39 No. 2 Mar.2017
并下喷射孔结构压降计算中流量系数的探讨
姚利明丨刘巨保’韩雪？刘玉喜”花明泽】董日治
1.东北石油大季机械科学与工程学院；2.大庆油田有限责任公司第四来油广；3.大庆油田并下作业分公司工程地质技术大队
弓用格式：姚利明，对巨保，韩雪，刘喜，花明锋，董日治，井下喷射孔结构压降计算中流量系数的探计（J，，石油钻采工艺,2017,39(2)：169-175.
摘要：石油钻采工程中有大量喷嘴、射孔孔眼等喷射孔结构，在复杂工程流体下，其喷射压降计算流量系数选取范围大，严重影响工艺设计和施工安全。为此，基于钻采、压裂和套管射孔中常见的喷射孔结构压降计算公式，分析了影响喷射孔压降计算的主要图素，采用数值模拟方法，得出了困锥、固总带圆柱出口的喷射孔结构流量系数计算公式，并考虑流体物性对流量系数的影响，给出了流量系数的统一计算公式。经实验和数值仿真计算，验证了该流量系数公式的可掌性，为石油钻采工程中喷嘴、射孔孔眼等喷射孔结构的压降计算提供了理论依据
关键词：喷嘴；压降；流量系数；数值仿真
中图分类号：TE248
文献标识码：A
Discussiononflowratecoefficientusedforthecalculation of
downhole jet orifice pressure drop
YAO Liming,LIU Jubao',HAN Xue',LIU Yuxi, HUAMingze',DONG Rizhi
1. College of Mechanical Science and Engineering, Northeast Petroleam University, Daging 163000, Heilongjiang, China;
2. No.1 Oil Field Process Team, No.4 Oil Prodiction Plan, PeroChina Daqing Oijfield Company, Daqing 163511, Heilongjiang, China;
3. Engineering Geological Technology Team of Downhole Operartion Company, PefroChinr Daging Oifield Company, Daqing 163453, Heilongjiang, China
Citation: YAO Liming, LIU Jubao, HAN Xue, LIU Yuxi, HUA Mingze, DONG Rizhi. Discussion on flow rate coefficient used for the calculation of downhole jet orifice pressure drop [ J] . Oil Drilling & Production Technology, 2017, 39(2): 169-175.
Abstraet: Jet orifices (e.g. nozzle and perforation) are abundantly applied in petroleum drilling and production engineering. In thc case of complex engineering fluid, the flow rate coefficient calculated from jet pressure drop is selected in the large range, so technologi-cal design and construction safety are impacted seriously. In this paper, the main factors influencing the calculation of jet orifice pres-sure drop were analyzed based on the calculation formula of jet orifice pressure drop which is commonly used for drilling, production, fracturing and casing perforation. Then, the formula for calculating the flow rate coefficient of jet orifice at cylinder outlet of taper or arc belt was established by means of numerical simulation. Finally, the identical calculation formula of flow rate coefficient was provided by taking into consideration the effects of physical properties on flow rate coefficient of fluids. And its reliability was verified by virtuc of experiments and numerical simulation. It provides the theoretical basis for calculating the pressure drop of jet orifices (c-g. nozzle and perforation) in oil drilling and production engineering
Key words: nozzle; pressure drop; flow rate coefficient; numerical simulation
基金项目：研究生科技创新项目“页岩沟气蕴压管柱输送流体机理研究"（端号：YJSCX2015-023NEPU)。
第一作者：姚利明(1991-),2014年毕业于东北石油大学工业设计专业，石油与天然气工程专业在读博士生，从事压载管柱、并下工具等
方面的研究。通试地址：(163000)黑龙江省大庆市高新技术开发区发展路199号。E-mail：yaoliming1991@outlook.com
通讯作者：对巨保(1963-),2001年毕业于渐江大学国体力学专业，从事压裂管柱、并下工具等方面的科研与教学工作，教投，搏士生导师。
通讯地址：（163000)黑龙江省大庆市高新技术开发区发展路199号。E-mail；327603785@qq.com
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