化学药剂如甲醇、乙二醇等可以防止水下生产系统内水合物的形成及结蜡、结垢等，对于流动保障具有重要作用。水下化学药剂注入计量阀（CIMV) 用于控制和计量注入水下生产系统的各类化学药剂，帮助达到按需精准注入及降本增效的目的。CIMV与常规流量计的结构和测量原理有显著不同，需要进行严格的标定才能确保测量精度符合设计要求。本文基于CIMV产品特点，介绍了国内首套CIMV标定装置的设计、建造，以及如何利用该装置进行自研CIMV测量算法模型的研究。在该装置上验证了CIMV测量精度，结果可达到±3%F.S.。本文的各项工作为CIMV国产化提供了良好借鉴。

Chemicals such as methanol and ethylene glycol can prevent the formation of hydrates， waxing and scaling within subsea production systems， playing a crucial role in flow assurance. Subsea Chemical Injection Metering Valve (CIMV) is used to control and measure the injected chemicals into subsea production systems. It aids in achieving precise ondemand injection as well as cost reduction and efficiency increase. The structure and measurement principle of CIMV differ significantly from conventional flow meters， hence rigorous calibration is required to ensure the measurement accuracy meeting the design requirements. Based on the product characteristics of CIMV， this paper introduces the design and construction of the first domestic CIMV calibration loop， and discusses how to use this loop to study and build a selfdeveloped CIMV measurement algorithm model. The measurement accuracy of CIMV is verified on this loop， with results as good as ±3% F.S. (Full Scale). This paper provides a valuable reference for the localization of CIMV.