定子偏斜角对正脉冲器压力信号的影响

中国机械工程 ›› 2014, Vol. 25 ›› Issue (8): 1017-1020.

定子偏斜角对正脉冲器压力信号的影响

赵常青1;刘凯1;赵桐1;贾桑2;马颖2

1.西安理工大学,西安,710048
2.中国石油集团测井有限公司,西安,710054

出版日期:2014-04-25 发布日期:2014-05-06
基金资助:
“十二五”国家科技重大专项(2011ZX05020-002)；国家自然科学基金资助项目(51275409)；陕西省科技计划资助项目(2012JQ7009)

Impact of Stator's Inclination Angle on Pressure Signals of Positive Pulse Generator

Zhao Changqing1;Liu Kai1;Zhao Tong1;Jia Sang2;Ma Ying2

1.Xi'an University of Technology,Xi'an,710048
2.CNPC Logging Co., Ltd., Xi'an,710054

Online:2014-04-25 Published:2014-05-06
Supported by:
National Science and Technology Major Project ( No. 2011ZX05020-002);National Natural Science Foundation of China（No. 51275409）；Shanxi Provincial Science and Technology program ( No. 2012JQ7009)

摘要/Abstract

摘要：

为了提高随钻正脉冲测井仪的信号强度,需要对定子偏斜角角度及偏斜特性进行优化。依据计算流体力学的方法建立了不同的定子偏斜角数值计算模型,分析了偏斜角对旋转阀压力信号幅值和速度场分布规律的影响,并通过试验验证了优化结果的合理性。结果表明:定子流域特性对信号强度有很大影响,压力信号幅值随定子偏斜角的减小而减小;单边偏斜比双边偏斜的压力信号强度大。

关键词: 随钻正脉冲测井仪, 信号强度, 旋转阀, 设计

Abstract:

To increase the signal strength of PP-MWD, considerable optimization of the inclination angle and defection characteristics were needed. Numerical simulation models for different inclination angles were developed by means of computational fluid dynamics techniques. Analysis was made to study the impacts of changing the inclination angles of stators on the amplitude and velocity of pressure signals of rotary valves. The reasonability of theoretical analysis was validated by experiments. The results show that the stator's flowing area influences on the pressure signal of logging tools by a large extent. As the inclination angles of stator decrease, the pressure signal amplitude gets smaller. The inclination at the both sides gets stronger pressure signals than unilateral inclination. Research results are instructive and meaningful to the design of rotary valves of PP-MWD.

Key words: positive pulse measurement-while-drilling(PP-MWD), signal strength, rotary valve, design

中图分类号:

TE927

赵常青, 刘凯, 赵桐, 贾桑, 马颖. 定子偏斜角对正脉冲器压力信号的影响[J]. 中国机械工程, 2014, 25(8): 1017-1020.

Zhao Changqing, Liu Kai, Zhao Tong, Jia Sang, Ma Ying. Impact of Stator's Inclination Angle on Pressure Signals of Positive Pulse Generator[J]. China Mechanical Engineering, 2014, 25(8): 1017-1020.

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