| 近钻头短距离声波通信 |
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| 引用本文： | 李志刚,管志川,王以法. 近钻头短距离声波通信[J]. 中国石油大学学报(自然科学版), 2010, 34(2). DOI: 10.3969/j.issn.1673-5005.2010.02.012 |
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| 作者姓名： | 李志刚 管志川 王以法 |
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| 作者单位： | 中国石油大学,石油工程学院,山东,东营,257061 |
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| 基金项目： | 国家自然科学基金，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 建立螺杆钻具本体的有限元模型,采用有限元法模拟计算声纵波在螺杆钻具中的传输特性,同时在实际钻具上对模拟结果进行试验验证,并选择4 kHz频率的声波在螺杆钻具上进行通信试验.结果表明:螺杆钻具及其上部钻具具有较宽的通信频带,类似于一个低通滤波器,可以利用声波实现近钻头信息的短距离传输,并可能获得较高的数据传输速率;80 bits/s的数据传输速率可实现稳定通信;钻具接头处的尺寸和介质变化所引起的衰减和反射不可忽视,须通过增加隔声或消声结构减少干扰.
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| 关 键 词： | 近钻头 短距离 声波 通信 |
Acoustic communication near-bit short distance |
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| LI Zhi-gang,GUAN Zhi-chuan,WANG Yi-fa. Acoustic communication near-bit short distance[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 2010, 34(2). DOI: 10.3969/j.issn.1673-5005.2010.02.012 |
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| Authors: | LI Zhi-gang GUAN Zhi-chuan WANG Yi-fa |
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| Affiliation: | LI Zhi-gang,GUAN Zhi-chuan,WANG Yi-fa(College of Petroleum Engineering in China University of Petroleum,Dongying 257061,China) |
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| Abstract: | Based on a finite element analysis model of a screw drill tool,the transmission properties of acoustic longitudinal wave in the body of the screw drill tool were analyzed using ANSYS software.Meanwhile an experiment on a real screw drill tool was done to verify the calculated results.A communication test was executed by using 4 kHz acoustic wave.The results show that the screw drill tool and its upper tools have a wide pass band like a low pass filter,which can be used as the channel of near-bit acoustic co... |
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| Keywords: | near bit short distance acoustic wave communication |
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