A Study on the Gas–Liquid Mixture Flow Characteristics Inside In-Line Type Subsea Separator

A Study on the Gas–Liquid Mixture Flow Characteristics Inside In-Line Type Subsea Separator

Y.J. Kim N.S. Woo S.M. Han

Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Republic of South Korea

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The implementation of subsea separation and liquid boosting is becoming a common development scheme for the exploration of deep water fields. Subsea separation is an attractive and economic solution to develop deep offshore fields producing fluid without hydrate or wax. Recently the subsea separation system is designed for a water depth of 3,000 m and internal design pressure up to 690 bar. Development and application of subsea separation system are relatively common in the developed countries and many studies have been conducted previously, but it is still a new field in Korea and this is the significance of this study. In this study, gas-liquid mixture flow characteristics inside in-line type subsea separation system are investigated by numerical and experimental studies for the development of subsea separator. For the subsea separator designed in this study, it is predicted to have a separating efficiency of 70%.


offshore installation, subsea processing system, subsea separation system


[1] Michaelsen, J., Innovative technology for ultra deepwater gravity-based separators. Offshore Technology Conference 15175, 2003. http://dx.doi.org/10.4043/25698-MS

[2] Di, S.R., Abrand, S., Shaiek, S., Butin, N., Riou, X. & Decrin, M.K., A novel gas/liquid separator to enhance production of deep water marginal fields. Offshore Technology Conference 21394, 2011.

[3] Bymaster, A.S., Olson, M.D., Grave, E.J., Svedeman, S.J., Viana, F., Mikkelsen, R. & Akdim, R., High-pressure gas-liquid separation: an experimental study on separator performance of natural gas streams at elevated pressures. Offshore Technology Conference 21781, 2011.

[4] Hannisdal, A., Westra, R., Dkdim, R., Bymaster, A., Grave, E. & Teng, D., Compact separation technologies and their applicability for subsea field development in deep water. Offshore Technology Conference 23223, 2012.

[5] Rune, F., Toine, H. & Robert, C., Compact subsea separation system with integrated snad handling. Offshore Technology Conference 16412, 2004.

[6] Simon, D., Statoil’s experience with and plans for subsea processing. Deep Offshore Technology International, 2010.

[7] Thomas, M.G., Theodore, E.D., Jim, C., John, R., Colleena, P., Jeffrey, B. S., Gilbert, R., Stuart, S. & Todd Ririe, G., Effects of Subsea Processing on Deepwater Environments in the Gulf of Mexico, OCS Study, MMS 2008-022, 2008.

[8] Bell, J.M., Chin, Y.D. & Hanrahan, S., State of the art of ultra deepwater production technologies. Offshore Technology Conference 17615, 2005.

[9] Woo, N.S., Park, J.M., Kwon, J.K., Kim, Y.J., Kim, S.S. & Jung, S.Y., A study on the subsea separation system development. Transactions of the KSAE (The Korean Society of Automotive Engineers), pp. 2396–2400, 2013.

[10] Yang, H.C. & Ryou, H.S., The effect of turbulence model on the flow field and the spray characteristics. Transactions of the KSAE (The Korean Society of Automotive Engineers), 5, pp. 87–101, 1997.

[11] Schook, R. & Thierens, D., De-bottlenecking of mature field production through the use of very compact and efficient separation equipment, topside or subsea. Offshore Technology Conference 21617, 2011.

[12] Slot, J.J., Campen, L.J.A.M., Hoeijmakers, H.W.M. & Mudde, R.F., In-line oil-water separation in swirling flow. 8th International Conference on CFD in Oil & Gas, Metallurgical and Process Industries SINTEF/NTNU at Trondheim, CFD11-121, 2011.