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首页> 外文会议>Geothermal Resources Council Annual Meeting >High Temperature (400°C) Fluid-Density Logging Tool and Application in Resolving an Unstable Production Mechanism of the Well in Uenotai Geothermal Field in Japan
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High Temperature (400°C) Fluid-Density Logging Tool and Application in Resolving an Unstable Production Mechanism of the Well in Uenotai Geothermal Field in Japan

机译：高温（400°C）流体密度测井工具及其在日本Uenotai地热场中井的不稳定生产机制

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The high temperature fluid-density tool has been developed by JAPEX Research Center under funding by the New Energy and Industrial Technology Development Organization (NEDO) of Japan. The tool is designed to work at temperatures up to 400°C. Since the tool contains a memory chip to store the measured data, it does not require conductor cables. Thus, it is easy to combine with other logging tools, such as PTF production logging tools. The fluid-density tool was used to evaluate an unstable production mechanism in the well, which showed periodic fluctuations in the well head pressure and production rate. Integration of temperature, pressure, flow-velocity and fluid-density data obtained from stationary surveys conducted above and below the production zones showed that the mechanism of unstable production to be the periodic boiling of hot water inside the borehole below the feed zones. The identification of the mechanism allowed remedial action to be taken. The bottom-hole interval below the feed zone was plugged by sand and cement. The workover succeeded not only in restoring stable production but also served to increase the amount of steam production.
机译：高温流体密度工具已根据由新能源与日本产业技术综合开发机构（NEDO）资助开发的JAPEX研究中心。该工具是在温度设计为工作高达400℃。因为该工具包含一个存储器芯片用于存储测得的数据，它不要求导体电缆。因此，很容易与其他测井仪器，如PTF生产测井工具相结合。流体密度工具被用来评估在井的生产不稳定机构，这表明定期波动在井口压力和生产速率。从上面和下面的生产层进行固定的调查获得的温度，压力，流量，速度和流体密度的数据的集成显示，生产不稳定的机制是热水低于进料区域中的井眼内的周期性沸腾。要采取的机制允许的补救措施的鉴定。进料区下面的底部孔间隔是由砂和水泥堵塞。修井恢复稳定生产不但成功，而且有助于提高产汽量。

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