元坝超深水平井提高随钻测量传输信号信噪比技术分析  

TECHNICAL ANALYSIS ABOUT THE IMPROVING THE SNR IN TRANSMISSION SINGALS OF MWD IN ULTRADEEP HORIZONTAL WELLS OF YUANBA AREA

作　　者：刘匡晓[1] 王磊[1] 李文清[1] 

机构地区：[1]中国石化石油工程技术研究院

出　　处：《钻采工艺》2011年第3期6-8,112,共3页Drilling & Production Technology

基　　金：中石化集团公司项目"川东北地区深井水平井钻井技术应用研究"(JP08006)

摘　　要：介绍了以往元坝地区深井随钻测量的工作情况,对随钻测量的测量原理也进行简单的回顾,针对元坝地区超深水平井详细分析了影响增大随钻测量脉冲信号强度的因素,提出了现场施工技术措施;分析了随钻测量传输过程各种噪声的频率特点,提出了排除噪声干扰的措施,从而达到提高随钻测量传输信号信噪比和可靠性,对于元坝地区超深水平井无线随钻顺利施工具有重要意义。This application of MWD in Yuanba area was introduced and the measuring principle of MWD also was reviewed. The influential factors were analyzed in details which interfered the amplification of the pulse signal intensity of MWD in ultradeep horizontal wells in Yuanba, and the technical measures were put forward for field operation. The frequency characters of different noise during MWD transmission were analyzed and the methods which could reduce the noise interference and improve the SNR (Signal-to-noise ratio) and reliability in transmission signal were proposed. It has great significant for the successful implementation of wireless MWD in ultradeep horizontal wells in Yuanba area.

关 键 词：元坝地区 超深水平井 随钻测量 脉冲信号 噪声 信噪比 

分 类 号：TE271[石油与天然气工程—油气井工程]