五参数组合测井仪设计及应用研究

发布时间：2019-01-16 08:14

【摘要】：五参数组合测井仪是一种综合测井仪器,以自然伽马仪为基础,再结合流量计、井温仪、压力计以及磁性定位仪。该测井仪器在测试过程中能够同时获得井温、伽马、磁定位、井压和流量多个参数,并且通过多个参数的互补和相关解释,将半定量的资料分析变为井下情况的全面综合判断。随着油田开发难度的加大和井下环境的日益恶劣,五参数组合测井仪能够持续可靠地发挥作用。本文分析和研究了五参数组合测井仪的各项技术指标和内部结构,并对遥传磁定位短节、井温压力短节、自然伽马短节、超声流量计短节、油管扶正器短节和同位素释放器短节进行原理和作用解析。其次分析了五参数组合测井仪中同位素示踪原理和流量测量原理。设计五参数组合测井仪的整体通信电路,对井温仪、压力仪、磁定位仪、自然伽玛仪、超声流量计和遥测编码模块六个部分进行了设计。在信号传输上,各个参数通过单片机之间的寻址、传输和编码,转换成曼彻斯特码。为了减少传输功率损耗,曼彻斯特码信号在送往电缆向上传输时被调制变成窄脉冲,最后通过单芯测井电缆传输到地面数控系统处理、存储和解释。本文根据实际工作经验,应用现场测井资料对吸水层、地下井况进行了解释,以提高各部分研究的可靠性。
[Abstract]:The five-parameter combined logging tool is a kind of comprehensive logging tool, which is based on natural gamma instrument and combined with Flowmeter, well temperature meter, pressure gauge and magnetic locator. The logging tool can simultaneously obtain multiple parameters such as well temperature, gamma ray, magnetic location, well pressure and flow rate. Through the complementation and interpretation of multiple parameters, the semi-quantitative data analysis can be turned into a comprehensive judgment of downhole conditions. With the increasing difficulty of oilfield development and the worsening downhole environment, the five-parameter combined logging tool can continue to function reliably. In this paper, the technical specifications and internal structure of the five-parameter combined logging tool are analyzed and studied, and the remote magnetic location knots, well temperature and pressure knots, natural gamma knots, ultrasonic Flowmeter segments are analyzed and studied. The principle and action of tubing centralizer and isotope release are analyzed. Secondly, the isotope tracer principle and flow measurement principle in five-parameter combined logging tool are analyzed. The whole communication circuit of five-parameter combined logging tool is designed. Six parts of well thermometer, pressure meter, magnetic locator, natural gamma instrument, ultrasonic Flowmeter and telemetry coding module are designed. In signal transmission, each parameter is transformed into Manchester code by addressing, transmitting and coding. In order to reduce transmission power loss, Manchester code signal is modulated to narrow pulse when it is sent up to cable. Finally, it is transmitted to surface numerical control system for processing, storage and interpretation by single core logging cable. Based on the practical working experience, the field logging data are used to explain the water absorption layer and underground well conditions in order to improve the reliability of each part of the study.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P631.83
，

本文编号：2409633