随钻正脉冲发生器阀体设计及其信号特性分析

赵常青; 刘凯; 赵桐; 卫一多; 代志平; 贾桑

doi:10.13433/j.cnki.1003-8728.2014.0513

随钻正脉冲发生器阀体设计及其信号特性分析

doi: 10.13433/j.cnki.1003-8728.2014.0513

1.
西安理工大学机械与精密仪器工程学院, 西安 710048;
2.
中国石油集团测井有限公司随钻测井中心, 西安 710054

基金项目:

“十二五”国家科技重大专项基金项目(2011ZX05020-002)

国家自然科学基金项目(51275409)

陕西省科技计划项目(2012JQ7009)资助

详细信息

作者简介:
赵常青(1984-)，博士研究生，研究方向为现代传动技术和流体力学，zhaochqing@163.com;刘凯(联系人)教授，博士生导师，kliu@mail.xaut.edu.cn

赵常青(1984-)，博士研究生，研究方向为现代传动技术和流体力学，zhaochqing@163.com;刘凯(联系人)教授，博士生导师，kliu@mail.xaut.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2013-02-05
- 刊出日期: 2015-06-10

The Design of the LWD Positive Pulse Valve and Analysis of its Signal Characteristics

1.
Faculty of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048;
2.
Logging While Drilling Center, China Petroleum Logging CO．LTD., Xi'an 710054

摘要

摘要: 泥浆脉冲传输是一种使用最为广泛的无线随钻测量方式,为了改善泥浆脉冲发生器工作性能、提高信号强度和传输距离,需要对旋转阀进行优化。根据流体力学中节流口压力与流量关系式,推导出正脉冲压力波信号的转阀形状曲线方程,并根据方程对定子、转子形状进行了优化。利用计算流体力学(CFD)方法,对转阀的流场特性进行三维仿真分析,并通过实验验证了旋转阀随钻测井仪的传输特性。研究结果表明:转子叶片轮廓设计成极坐标曲线时正脉冲压力波信号稳定;采用曲线阀口可以使水力转矩变化平缓;为了解决冲蚀问题,转阀设计中考虑溢流功能,同时设计转子耐磨套。
- 随钻测量 /
- 计算流体力学 /
- 设计 /
- 转子 /
- 流场
Abstract: Mud pulse transmission is a kind of the most widely used method of wireless measurement while drilling. In order to improve the performance of mud positive pulse generator and to accelerate the generation rate of the pulse signal and its transmission distance in the Logging While Drilling(LWD) system,the stator and the rotor blade should be rationally designed. The equations of valve shape curve to generate desired pressure valve signal can be derived from orifice pressure-flow relationship. Based on the optimized equation,the design of the stator and rotor shape can be rectified. With the help of computational fluid dynamics(CFD) technique,the threedimensional flow fields simulation analysis has been conducted on the characteristics of the rotary valve coverage. Then the transmission characteristics of the rotary valve in LWD system are validated experimentally. The results show that the rotor blade profile can be designed as a polar coordinate curve,which can be used to get stable positive pressure wave signal of positive pulse; The hydraulic torque can be changed mildly using the curved orifice; The overflow valve and wear sleeve are designed to solve the problem of erosion.
- calculations /
- computational fluid dynamics /
- computer simulation /
- design /
- experiments

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参考文献(13)

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