고-액 혼합유체의 Slim Hole 환형관내 유동특성에 관한 연구
Flow Characteristics of Solid-Liquid Mixture Flow in a Slim Hole Annulus
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초록
Experimental and numerical studies were carried out to investigate solid-liquid mixture upward hydraulic transport of solid particles in vertical and inclined annuli with a rotating inner cylinder. Lift force acting on a fluidized particle plays a central role in many importance applications, such as the removal of drill cuttings in horizontal drill holes, sand transport in fractured reservoirs, sediment transport, and cleaning of particles from surfaces, etc. In this study, a clear acrylic pipe was used in order to observe the movement of solid particles. Effect of annulus inclination and drill pipe rotation on the carrying capacity of drilling fluid, particle rising velocity, and pressure drop in the slim hole annulus have been measured for fully developed flows of water and of aqueous solutions of sodium carboxymethyl cellulose (CMC).
Abstract
Experimental and numerical studies were carried out to investigate solid-liquid mixture upward hydraulic transport of solid particles in vertical and inclined annuli with a rotating inner cylinder. Lift force acting on a fluidized particle plays a central role in many importance applications, such as the removal of drill cuttings in horizontal drill holes, sand transport in fractured reservoirs, sediment transport, and cleaning of particles from surfaces, etc. In this study, a clear acrylic pipe was used in order to observe the movement of solid particles. Effect of annulus inclination and drill pipe rotation on the carrying capacity of drilling fluid, particle rising velocity, and pressure drop in the slim hole annulus have been measured for fully developed flows of water and of aqueous solutions of sodium carboxymethyl cellulose (CMC).
참고문헌 (8)
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- Tomren, P. H., "The Transport of Drilled Cuttings in an Inclined Eccentric Annulus, M. S. Thesis, University of Tulsa, Tulsa, OK-USA", ~ (1979)