Flow Characteristics of Solid-Liquid Mixture Flow in a Slim Hole Annulus

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2008 Vol.45, Issue 1 Preview Page Next Page

Flow Characteristics of Solid-Liquid Mixture Flow in a Slim Hole Annulus 고-액 혼합유체의 Slim Hole 환형관내 유동특성에 관한 연구: 우남섭, 김영주, 황영규, 윤치호, 한상목, 이동길, 박종명, 박용찬
Nam Sub Woo, Young Ju Kim, Young Kyu Hwang, Chi Ho Yoon, Sang-Mok Han, Dong Kil Lee, Jong Myung Park and Yong Chan Park

29 February 2008. pp. 8-17

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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).

Keywords

Solid-liquid Flow

Concentric Annulus

Rotating Flow

Shear Stress

안쪽축이 회전하는 수직과 경사진 환형관 내에서 고-액 혼합 유동의 수력학적 이송 특성을 실험과 수치해석을 이용하여 고찰하였다. 액체에 섞인 입자에 작용하는 양력은 경사 굴착에서 암편의 제거, 골재 채취장에서의 골재 이송 및 침전물 이송 등과 같은 분야에서 중요한 역할을 수행한다. 본 연구에서는 환형관 바깥 실린더를 투명한 아크릴로 제작하여 고체 입자의 거동 특성을 관찰할 수 있도록 하였다. 입자 이송 유체로 물과 CMC 수용액(aqueous solutions of sodium carboxymethyl cellulose)을 이용하여 완전 발달된 유동장에 대해서 시추액의 입자 이송능력, 입자 이송속도 및 환형관내 축방향 압력손실에 대한 환형관 경사각과 안쪽축 회전의 영향을 고찰하였다.

키워드

석유시추

고-액 혼합유동

동심환형관

회전유동

전단응력

References

Escudier, M. P. and Gouldson, I. W., 1995, “Concentric annular flow with center body rotation of a Newtonian and a shear-thinning liquid,” International Journal of Heat and Fluid Flow, Vol. 16, 156-162.
Hwang, Y. K. and Kim, Y. J., 2002, “Helical flow Study on Non-Newtonian Fluid in an Inclined Annulus with Rotating Inner Cylinder,” Proceeding of the KSME, 1944-1949.
Iyoho, A. W., 1980, Drilled-Cuttings Transport by Non-Newtonian Drilling Fluids Through Inclined Eccentric Annuli, Ph.D. Dissertation, University of Tulsa, Tulsa, OK-USA.
Larsen, T. I., 1990, A Study of Critical Fluid Velocity in Cuttings Transport for Inclined Wellbores, M.S. Thesis, University of Tulsa, Tulsa, OK-USA.
Lauzon, R. V. and Reid, K. I. B., 1979, “New Rheological Model offers Field Alternatives,” Oil and Gas Journal, Vol. 77, 51-57.
Nouri, J. M. and Whitelaw, J. H., 1994, “Flow of Newtonian and Non-Newtonian Fluids in a Concentric Annulus With Rotation of the Inner Cylinder,” Journal of Fluids Engineers, Vol. 116, 821-827.
Pinho, F. T. and Whitelaw, J. H., 1990, “Flow of non-Newtonian Fluids in a Pipe,” International Journal of Non-Newtonian Fluid Mech., Vol. 34, 129-144.
Tomren, P. H., 1979, The Transport of Drilled Cuttings in an Inclined Eccentric Annulus, M. S. Thesis, University of Tulsa, Tulsa, OK-USA.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society for Geosystem Engineering
Journal Title(Ko) :한국지구시스템공학회지
Volume : 45
No :1
Pages :8-17

[1] Escudier, M. P. and Gouldson, I. W., 1995, “Concentric annular flow with center body rotation of a Newtonian and a shear-thinning liquid,” International Journal of Heat and Fluid Flow, Vol. 16, 156-162.

[2] Hwang, Y. K. and Kim, Y. J., 2002, “Helical flow Study on Non-Newtonian Fluid in an Inclined Annulus with Rotating Inner Cylinder,” Proceeding of the KSME, 1944-1949.

[3] Iyoho, A. W., 1980, Drilled-Cuttings Transport by Non-Newtonian Drilling Fluids Through Inclined Eccentric Annuli, Ph.D. Dissertation, University of Tulsa, Tulsa, OK-USA.

[4] Larsen, T. I., 1990, A Study of Critical Fluid Velocity in Cuttings Transport for Inclined Wellbores, M.S. Thesis, University of Tulsa, Tulsa, OK-USA.

[5] Lauzon, R. V. and Reid, K. I. B., 1979, “New Rheological Model offers Field Alternatives,” Oil and Gas Journal, Vol. 77, 51-57.

[6] Nouri, J. M. and Whitelaw, J. H., 1994, “Flow of Newtonian and Non-Newtonian Fluids in a Concentric Annulus With Rotation of the Inner Cylinder,” Journal of Fluids Engineers, Vol. 116, 821-827.

[7] Pinho, F. T. and Whitelaw, J. H., 1990, “Flow of non-Newtonian Fluids in a Pipe,” International Journal of Non-Newtonian Fluid Mech., Vol. 34, 129-144.

[8] Tomren, P. H., 1979, The Transport of Drilled Cuttings in an Inclined Eccentric Annulus, M. S. Thesis, University of Tulsa, Tulsa, OK-USA.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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