Experimental investigation on the water hammer characteristic of stalling fluid in eccentric casing-tubing annulus. (15th August 2022)

• Record Type: Journal Article
• Authors: Xi, Bin; Wang, Chuan; Xi, Wang; Liu, Yang; Wang, Hui; Yang, Yang
• Is Part Of: Energy. Volume 253(2022)
• Publication Date: 2022-08-15
• Subjects: Eccentric -- Annulus flow channel -- Dynamic loss -- Flow field -- Pressure field -- Vorticity; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2022.124113
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: This study aims to analyze the water hammer characteristics of water hammer on tubing offset center in oil project for providing reference for water injection and well washing. An analysis is conducted by utilizing a test apparatus, particle image velocimetry, and a transient pressure measurement system. The characteristic of dynamic fluid loss is investigated in eccentric annulus flow channel and tubing and in flow line in terms of velocity, vorticity, and pressure field. Results show that water hammer occurs, and the pressure of oil casing annulus increases at the inside and outside walls with the increase in eccentricity. The water hammer pressure forms double imbalance in the internal and external walls of eccentric annulus tubing. With the increase in eccentricity, flow velocity decreases in the small flow passage, and flow velocity attenuation is fast at oil casing annulus. Highlights: The oil sleeve annular PIV experimental system is designed. The oil sleeve annular PIV experimental procedure and data acquisition method are presented. The stall flow field of the medium with different eccentric distances of the tubing is captured experimentally. The effect of different tubing eccentric distances on the medium stall flow field is analyzed by comparison.