油水井套管探伤应用关键技术研究

发布时间：2018-08-24 15:16

【摘要】：以油气田生产中的套管损伤检测为背景,研究相关的电磁学基础理论及瞬变电磁法在生产井环境下套管损伤检测的原理方法,对探伤模型和信号特征进行了分析和计算,为应用研究奠定理论基础。针对现有套损检测系统的不足,进一步完善了相关功能模块,改进了探头的绕制、优化了数据采样方案、提高了深度计量精度和数据通信的可靠性,缩短了仪器研发和调试周期,提升了系统样机整体的稳定性。结合不同的应用领域,通过对比实际检测结果,分析系统发射功率、探头线圈系设计、测井速度、仪器偏心、磁化干扰及环境温度等因素对生产井套损检测的瞬变电磁法影响,讨论了这些干扰因素的判别和校正方法。针对套损数据反演和解释方法^u展了研究,讨论瞬变电磁探伤仪的仪器刻度方案、缺陷类型识别与分辨、测量的精度和稳定性,为套损成像提供了理论依据。在理论研宄的基础上^u展了大量的室内外试验,进行了模拟刻度和油田现场测井,对仪器性能进行了验证,为开展大规模应用研宄进行了必要的准备。
[Abstract]:Based on the casing damage detection in oil and gas field production, the basic theory of electromagnetism and the principle and method of transient electromagnetic method for casing damage detection in production well environment are studied, and the flaw detection model and signal characteristics are analyzed and calculated. It lays a theoretical foundation for applied research. In view of the deficiency of the existing casing damage detection system, the related functional modules are further improved, the winding of the probe is improved, the data sampling scheme is optimized, and the depth measurement accuracy and the reliability of data communication are improved. The cycle of instrument development and debugging is shortened, and the overall stability of the system prototype is improved. Combined with different application fields, by comparing the actual test results, this paper analyzes the effects of system transmitting power, probe coil system design, logging speed, tool eccentricity, magnetic interference and ambient temperature on the transient electromagnetic method for casing damage detection in production wells. The methods of discriminating and correcting these interference factors are discussed. In this paper, the method of inversion and interpretation of casing damage data is studied, the calibration scheme of transient electromagnetic flaw detector, the identification and resolution of defect type, the accuracy and stability of measurement are discussed, which provides a theoretical basis for casing damage imaging. On the basis of theoretical research, a large number of indoor and outdoor tests are carried out, simulation calibration and field logging are carried out, the performance of the tool is verified, and necessary preparations are made for large-scale application research.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE931.2

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