Real-Time Estimation and Management of Hydrate Plugging Risk During Deep-Water Gas Well Testing

Authors
Jianbo Zhang (China University of Petroleum East China) | Zhiyuan Wang (China University of Petroleum East China) | Wenguang Duan (CNPC Xibu Drilling Engineering Company Limited and China University of Petroleum East China) | Weiqi Fu (China University of Petroleum East China) | Shikun Tong (China University of Petroleum East China) | Baojiang Sun (China University of Petroleum East China)
DOI
https://doi.org/10.2118/197151-MS
Document ID
SPE-197151-MS
Publisher
Society of Petroleum Engineers
Source
Abu Dhabi International Petroleum Exhibition & Conference, 11-14 November, Abu Dhabi, UAE
Publication Date
2019
Document Type
Conference Paper
Language
English
ISBN
978-1-61399-672-0
Copyright
2019. Society of Petroleum Engineers
Keywords
Hydrate plugging risk, Hydrate formation and deposition, Real-time estimation and management, Deep-water gas well testing, Wellhead pressure variation
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Abstract

Hydrate formation and deposition usually exist during deep-water gas well testing, which easily cause plugging accident in the testing tubing if it was not found and handled in time. A method to estimate and manage hydrate plugging risk in real-time during deep-water gas well testing is developed in this work. This method mainly includes the following steps: predicting hydrate stability region, calculating hydrate behaviors, analyzing the effect of hydrate behaviors on the variation of wellhead pressure, monitoring the variation of wellhead pressure and estimating hydrate plugging risk in real-time, and managing hydrate plugging risk in real-time. As hydrates continue to form and deposit, the effective inner diameter of the tubing decreases, and the wellhead pressure also decreases accordingly. The risk of hydrate plugging can be estimated by monitoring the variation of wellhead pressure. When the wellhead pressure decreases to the critical value for safety at a given gas production rate, it is indicated that hydrate plugging is likely to occur. Under this condition, hydrate inhibitor is needed to inject into the tubing to reduce the severity of hydrate plugging, and real-time monitoring of wellhead pressure variation is also needed to guarantee the risk of hydrate plugging in the testing tube is within safe range. By using this method, the real-time estimation and management of hydrate plugging during the testing process can be achieved, which can provide basis for the safe and efficient testing of deep-water gas wells.

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Trummer, S., Mohallem, R., Assis, J., Hydrate remediation during well testing operations in the deepwater Campos Basin, Brazil. SPE/ICoTA Coiled Tubing & Well Intervention Conference & Exhibition. 2013.

Turner, D., Boxall, J., Yang, S., Kleehamer, D., Koh, C., Miller, K., Sloan, E.D., Xu, Z., Mathews, P., Talley, L. Development of a hydrate kinetic model and its incorporation into the OLGA2000 transient multiphase flow simulator. The Fifth International Conference on Gas Hydrates. 2005.

Wang, Z., Sun, B., Wang, X., Zhang, Z. Prediction of natural gas hydrate formation region in wellbore during deep water gas well testing, J. Hydrodyn. 2014, 26(4): 568–576.

Wang, Z., Zhang, J., Sun, B., Chen, L., Zhao, Y., Fu, W. A new hydrate deposition prediction model for gas-dominated systems with free water. Chem Eng Sci 2017, 163:145–154.

Wang, Z., Zhao, Y., Zhang, J., Wang, X., Yu, J., Sun, B. Quantitatively assessing hydrate-blockage development during deepwater-gas-well testing. SPE J 2018, 23(04):1166–1183.

Wang, Z., Zhao, Y., Sun, B., Chen, L., Zhang, J., Wang, X. Modeling of hydrate blockage in gas-dominated systems. Energy Fuels 2016, 30:4653–4666.

Arrieta, V., Torralba, A., Hernandez, P., García, E., Maia, C., Guajardo, M. Case history: Lessons learned from retrieval of coiled tubing stuck by massive hydrate plug when well testing in an ultradeepwater gas well in Mexico. SPE. Prod. Oper. 2011, 26(4): 337–342.

Zhang, J., Wang, Z., Sun, B., Sun, X., Liao, Y. An integrated prediction model of hydrate blockage formation in deep-water gas wells. Int. J. Heat Mass Transf 2019a, 140:187–202.

Aspenes, G., Dieker, L. E., Aman, Z. M., Hoiland, S., Sum, A.K., Koh, C. A., Sloan, E. D. Adhesion force between cyclopentane hydrates and solid surface materials. J. Colloid Interface Sci. 2010, 343(2): 529–536.

Zhang, J., Wang, Z., Liu, S., Zhang, W., Yu, J., Sun, B. Prediction of hydrate deposition in pipelines to improve gas transportation efficiency and safety. Appl Energy 2019b, 253:113521.

Zhao, Y., Wang, Z., Yu, J., Pan, S., Zhang, J., Sun, B. Hydrate plug remediation in deepwater well testing- a quick method to assess the plugging position and severity. SPE Annual Technical Conference and Exhibition. 2017.

Zhu, W., Huang, B., Mi, L., Wilkins, R., Fu, N., Xiao, X. Geochemistry, origin, and deep-water exploration potential of natural gases in the Pearl River Mouth and Qiongdongnan basins, South China Sea. AAPG Bulletin 2009, 93 (6):741–761.

Bassani, C.L., Barbuto, F.A.A., Sum, A.K., Morales, R.E.M. Modeling the effects of hydrate wall deposition on slug flow hydrodynamics and heat transfer, Appl. Therm. Eng. 2017, 114: 245–254.

Chen, G.J., Guo, T.M. A new approach to gas hydrate modelling, Chem. Eng. J. 1998, 71(2): 145–151.

Creek, J.L. Efficient hydrate plug prevention. Energy Fuels 2012, 26: 4112–4116.

Dai, Z., Luo, D., Liang, W. Gas hydrate prediction and prevention during DST in deep water gas field in South China Sea. Abu Dhabi International Petroleum Exhibition and Conference. 2015.

Lorenzo, M.D., Aman, Z.M., Kozielski, K., Norris, B.W.E., Johns, M.L., May, E.F. Underinhibited hydrate formation and transport investigated using a single pass gas-dominant flowloop. Energy Fuels 2014, 28: 7274–7284.

Finnemore, E.J., Franzini, J.B. Fluid mechanics with engineering applications, McGraw-Hill Education, New York, October 25, 2001.

Freitas, A.M., Gaspari, E., Vitullo, L.H.S., Carvalho, P. R.R. Formation and removal of a hydrate plug formed in the annulus between coiled tubing and drill string. Offshore Technology Conference. 2005.

Haaland, S.E. Simple and explicit formulas for the friction factor in turbulent pipe flow. J. Fluid. Eng, 1983, 105:89–90.

Liu, W., Hu, J., Li, X., Sun, F., Sun, Z., Zhou, Y. Research on evaluation method of wellbore hydrate blocking degree during deepwater gas well testing. J Nat Gas Sci Eng 2018, 59: 168–182.

Pang X., Yang, S., Zhu, M., Li, J. Deep-water fan systems and petroleum resources on the northern slope of the South China Sea. Acta Geologica Sinica 2004, 78(3):626–631.

Reyna. E., Stewart, S. Case history of the removal of a hydrate plug formed during deep water well testing. SPE/IADC Drilling Conference. 2001.

Sloan, E.D., Koh, C.A., Sum, A.K. Natural Gas Hydrates in Flow Assurance, Gulf Professional Publishing, Oxford, 2010.

Sun, B., Fu, W., Wang, Z., Xu, J., Chen, L., Wang, J., Zhang, J. Characterizing the rheology of methane hydrate slurry in a horizontal water-continuous system. SPE J 2019.

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