Design and use of an online drilling fluid pipe viscometer. (October 2022)

• Record Type: Journal Article
• Authors: Liu, Naipeng; Gao, Hui; Xu, Yuan; Chai, Xiaoran; Hu, Yule; Duan, Longchen
• Is Part Of: Flow measurement and instrumentation. Volume 87(2022)
• Publication Date: 2022-10
• Subjects: Drilling fluid -- Rheological properties -- Online viscometer; Fluid dynamic measurements -- Periodicals; Flow meters -- Periodicals; Fluides, Dynamique des -- Mesure -- Périodiques; Débitmètres -- Périodiques; 681.2805
• DOI: 10.1016/j.flowmeasinst.2022.102224
• Languages: English
• ISSNs: 0955-5986

Abstract

Abstract: The accurate and frequent measurement of the drilling fluid's rheological properties is essential for drilling engineering. To measure drilling fluid's rheological properties automatically and frequently, we design an online pipe viscometer. First, we introduce the measurement principle, calculation flow chart, and design scheme. The pulsation damper and back pressure valve are used to stabilize flowrate and pressure which can improve the accuracy of the pipe viscometer. Then the errors under various static hole sizes are measured, and the static hole with the smallest error is selected as the measurement pipe of the pipe viscometer. Finally, various drilling fluids are tested. Compared with the standard six-speed viscometer, the shear stress error of the six standard shear rates (1022, 511, 340, 170, 10, 5s −1 ) is within 1Pa. The designed pipe viscometer can frequently measure drilling fluid's rheological properties and meets the needs of on-site online testing. Highlights: A small size drilling fluid rheometer is designed. The method to reduce the measurement error is provided. Compared with the standard six-speed viscometer, the shear stress error of the six standard shear rates is within 1Pa.