Development and application of an automatic online testing instrument for the funnel viscosity and density of drilling fluids

Authors

XIE Hui, Wuhan Yucheng Qianli Construction Co., Ltd., Wuhan 430051, ChinaFollow
ZHENG Liqun, Wuhan Yucheng Qianli Construction Co., Ltd., Wuhan 430051, China
LIU Fulin, Wuhan Yucheng Qianli Construction Co., Ltd., Wuhan 430051, China
LIANG Mengjia, Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
LIU Xuan, Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
CAI Jihua, Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
YANG Xianyu, Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, ChinaFollow
HOU Jiwu, Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, ChinaFollow

Abstract

In recent years, the research on the automatic performance testing technology for drilling fluids has achieved significant progress both domestically and internationally. However, automatic drilling fluid testing instruments face challenges, such as high costs, complicated structures, and restricted working environments. Given these challenges, this study developed an automatic online testing instrument for the funnel viscosity and density of drilling fluids. The testing instrument consists of mud pumping, testing, cleaning, and control modules, which are built using a programmable logic controller (PLC), an Internet of things (IoT) module, a pressure sensor, an ultrasonic sensor, a peristaltic mud pump, an electric ball valve, and a diaphragm pump. It can fulfill functions including the automatic funnel viscosity and density testing of drilling fluids, and the data viewing and operation at the mobile terminal. This study enhanced the accuracy and stability of the testing instrument through sensor data fusion and filtering algorithms. The testing instrument was employed to test the performance of various drilling fluid systems, yielding funnel viscosity and density errors controlled at ±1 s and ±0.01 g/cm³, respectively. Furthermore, it allowed for continuous automatic performance testing for drilling fluids. The laboratory and field testing results suggest that the testing instrument boasts convenient operations, accurate testing results, high repeatability, minimal manual measurement errors, and labor saving. Therefore, it meets the demand for performance testing of drilling fluids in practical drilling construction, demonstrating high universality and great potential for application.

Keywords

drilling fluid, automatic testing, funnel viscosity, density

DOI

10.12363/issn.1001-1986.23.06.0384

Recommended Citation

XIE Hui, ZHENG Liqun, LIU Fulin, et al. (2024) "Development and application of an automatic online testing instrument for the funnel viscosity and density of drilling fluids," Coal Geology & Exploration: Vol. 52: Iss. 3, Article 18.
DOI: 10.12363/issn.1001-1986.23.06.0384
Available at: https://cge.researchcommons.org/journal/vol52/iss3/18

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