Abstract: The traditional mixing cement slurry for well cementing operation not only has large labor intensity, and it is also more difficult to accurately modulate dry ash metering valve. Furthermore, slurry density fluctuates greatly, directly affecting the mixing quality, and the data could not be analyzed after operation. Through the application of the automatic mixing cementing trucks manufactured by the Petroleum Machinery Factory of CNPC Bohai Equipment Manufacturing Co., Ltd., the density and liquid level could be controlled automatically, based on accurate measurement of slurry density, recording the work condition, equipment status and work data truly and thoroughly, improving the degree of automation, and reducing the intensity and difficulty in mixing operation. This paper introduced the main technical parameters, the dynamic actuating system, the mixing slurry system and the prominent characteristics of the equipment. Its reasonable design, advanced techniques, convenient and reliable operation enable it to reach the world's most advanced level in terms of mixing slurry density control.

Key words: high energy cement slurry mixing, proportional controller, bi-directional automatic control

摘要： 传统固井水泥混浆作业,不仅劳动强度大,更难以准确调节干灰计量阀,水泥浆密度波动大,直接影响混浆质量,且作业后无法对数据进行分析。中国石油渤海石油装备制造有限公司石油机械厂生产的自动混浆固井水泥车,可以在精确测量水泥浆密度的基础上自动控制密度与液位,真实、全面地记录作业状态、设备状态与作业数据,提高了自动化程度,减轻了混浆作业强度、降低了混浆作业难度。文章介绍了该设备的主要技术参数、动力传动系统、混浆系统及突出特点,指出其设计合理、技术先进、操作方便、运行可靠,在混浆密度控制技术方面达到了国际先进水平。

关键词: 高能泥浆混合, 比重控制器, 双向自动控制