新型套管接箍磁定位仪的电气控制系统设计及实现

发布时间：2018-04-05 20:54

本文选题：磁定位　切入点：新型特殊螺纹　出处：《西安工程大学》2015年硕士论文

【摘要】：在生产测井中,通过磁定位仪测量井下套管接箍的个数来确定仪器所在的地层深度。原磁定位仪在新型特殊螺纹套管接箍井中,无法实现套管接箍的测量。目前,国内市场至今无检测新型特殊螺纹套管接箍的定位仪器。因此,本文以开发新型特殊螺纹套管接箍磁定位仪为研究目的,研究课题为该仪器的电气控制系统设计及其实现。该系统主要由测井数据采集、测井数据上传和测井数据解释三部分组成。由霍尔元件代替原检测探头中的线圈,提高检测探头灵敏度,并减小体积,使得仪器精准测出特殊螺纹套管接箍;测井数据上传至地面系统时采用曼彻斯特码编码方式,解决了系统时钟同步的关键问题;采用动态地调整门限幅值和深度窗口法,有效地识别了特殊螺纹套管接箍信号;根据平差法计算出套管接箍深度位置,实现了仪器深度定位。本文详细论述了磁定位仪电气控制系统的软、硬件设计及其实现。通过对新型磁定位仪系统的实验数据的分析表明,采用本文的新型检测探头和接箍的识别方法,能够精准测量新型特殊螺纹套管接箍,实现了仪器精准定位。因此,本文研究设计的磁定位仪具有良好的应用价值。
[Abstract]:In production logging, the formation depth of the instrument is determined by measuring the number of casing hoops in downhole by magnetic locator.The measurement of casing coupling can not be realized by the magnetic locator in a new type of special threaded casing coupling well.At present, the domestic market has not detected a new type of special thread casing coupling positioning equipment.Therefore, the purpose of this paper is to develop a new magnetic locator for special threaded casing coupling, and to study the design and implementation of the electrical control system for this instrument.The system consists of logging data acquisition, log data upload and log data interpretation.Hall element is used to replace the coils in the original detection probe to improve the sensitivity and reduce the volume of the probe, so that the instrument can accurately measure the special thread casing coupling, and when the logging data is uploaded to the surface system, the Manchester code coding method is adopted.The key problem of system clock synchronization is solved, the special thread casing coupling signal is effectively identified by dynamically adjusting the threshold amplitude and depth window method, the casing coupling depth position is calculated according to the adjustment method, and the instrument depth positioning is realized.In this paper, the software and hardware design and realization of the electric control system of the magnetic locator are discussed in detail.Through the analysis of the experimental data of the new magnetic positioner system, it is shown that the new detection probe and the identification method of the hoop in this paper can accurately measure the new type of special thread casing coupling and realize the accurate positioning of the instrument.Therefore, the magnetic locator designed in this paper has good application value.
【学位授予单位】：西安工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.83;TM921.5

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