振动波井下通讯技术

发布时间：2018-01-23 19:18

本文关键词： 振动波井下通讯开关键控调制曼彻斯特编码磁致伸缩材料微振加速度传感器　出处：《石油勘探与开发》2017年02期 　论文类型：期刊论文

【摘要】：为了克服传统井下通讯方法的不足,提出一种振动波井下通讯技术,开发了振动波井下通讯系统,进行了现场试验,并将该技术应用于分层注水。理论和实验研究表明,油套管振动波传输呈通阻带交替分布,据此制定了多基频传输策略,采用开关键控调制和曼彻斯特编码方式对振动信号进行处理,将控制信息加载到振动波。研发了振动信号发生系统,实现电能到振动波能量的可控转换。研发了振动波接收解码系统,以微振加速度传感器作为信号拾取元件。设计了振动波井下远程传输测试系统,并进行了井下通讯现场试验,验证了振动波井下通讯技术的可行性以及通讯系统的准确性和可靠性,得到了套管振动波信号的衰减特性。该技术已成功应用于分层注水,在井筒控制领域有广阔的应用前景。
[Abstract]:In order to overcome the shortcomings of the traditional underground communication methods, a vibration wave underground communication technology is proposed, and the vibration wave underground communication system is developed, and the field test is carried out. The theoretical and experimental studies show that the vibration wave transmission of oil casing exhibits alternate distribution of pass-stop band, and a multi-fundamental frequency transmission strategy is established. The vibration signal is processed by open key modulation and Manchester coding, and the control information is loaded into the vibration wave. A vibration signal generating system is developed. To realize the controllable conversion from electrical energy to vibration wave energy, the vibration wave receiving and decoding system is developed, and the micro-vibration acceleration sensor is used as the signal pickup element. The remote transmission and testing system of vibration wave underground is designed. The feasibility of the vibration wave underground communication technology and the accuracy and reliability of the communication system are verified. The attenuation characteristics of casing vibration wave signal have been obtained. This technique has been successfully applied to stratified water injection and has a broad application prospect in wellbore control field.
【作者单位】：中国石油勘探开发研究院;
【基金】：国家高技术研究发展计划(863)项目“采油井筒控制工程关键技术与装备”(2012AA061300)
【分类号】：TE46
【正文快照】： 0引言随着油藏开发技术的发展,分层注采、储集层改造等技术对井筒控制要求越来越高。井下通讯技术是实现地面与井下远程控制和数据传输的关键,但由于井下条件复杂,传统的通讯技术(如无线通讯)无法在井下通讯过程中直接应用。目前普遍使用的井下通讯方法包括电缆通讯技术、压力

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