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P. J. Waltrich
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Proceedings Papers

Is The Dome Pressure Equal to The Closing Pressure in Nitrogen-Charged Gas-Lift Valves?

P. J. Waltrich, F. S. Maciel, M. C. Fernandes
Paper presented at the SPE Artificial Lift Conference and Exhibition - Americas, August 20–22, 2024
Paper Number: SPE-219535-MS
https://doi.org/10.2118/219535-MS
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Proceedings Papers

Distributed Sensing and Real Time Visualization of Gas Kick Dynamics in a Full-Scale Wellbore

W. C. Williams, C. E. Taylor, M. A. Almeida, J. Sharma, P. J. Waltrich, Y. Chen, G. Feo, M. Kunju, O.L.A. Santos, O. A. Ogunsanwo, D. Paulk, D. Kortukov
Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201539-MS
https://doi.org/10.2118/201539-MS
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View Paper titled, Distributed Sensing and Real Time Visualization of Gas Kick Dynamics in a Full-Scale Wellbore
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Proceedings Papers

Experimental investigation of vertical downward two-phase flow in annulus

R. P. Coutinho, P. J. Waltrich
Publisher: BHR Group
Paper presented at the 11th North American Conference on Multiphase Production Technology, June 6–8, 2018
Paper Number: BHR-2018-023
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Proceedings Papers

Experimental investigation of vertical high-velocity two-phase flows in large-diameter pipes

M. S. Capovilla, P. Cavalcanti de Sousa, P. J. Waltrich
Publisher: BHR Group
Paper presented at the 18th International Conference on Multiphase Production Technology, June 7–9, 2017
Paper Number: BHR-2017-103
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Proceedings Papers

A Transient Coupled Wellbore-Reservoir Model Using a Dynamic IPR Function

A. Posenato Garcia, P. Cavalcanti de Sousa, P. J. Waltrich
Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181691-MS
https://doi.org/10.2118/181691-MS
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Proceedings Papers

Modeling vertical flows in churn and annular flow regimes in small- and large-diameter pipes

E. Pagan, W. C. Williams, S. Kam, P. J. Waltrich
Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-191
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