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The Role of High-Flow Nasal Cannula (HFNC) During Flexible Bronchoscopy in Adult Patients with Moderate Respiratory Dysfunctions: An Observational Study. [PDF]
J Clin MedCoppolino F +8 more
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TiN Plasmonic Metamaterial Arrays Fabricated at Low Temperatures on Versatile Substrates. [PDF]
ACS Appl Opt MaterBower R +9 more
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Numerical modeling of the gas lift process in gas lift wells
AIP Conference Proceedings, 2016In this paper, one-dimensional and two-dimensional axisymmetric motion of gas, liquid and a gas-liquid mixture in a gas-lift well is studied. Numerical simulation of the one-dimensional model of gas-lift process is considered where the movement in a gas-lift well is described by partial differential equations of hyperbolic type.
N. M. Temirbekov +2 more
openaire +1 more source
SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition, 2014
Abstract In Alaska oilfields, non rig tubing repair has become a viable alternative to rig workovers (RWO). Tubing straddles can remediate tubing by casing ("A" annulus) communication at a tremendous savings in areas where rig workover cost is significant. This paper advances the analysis of more than 400 tubing straddles set since 1985.
J. Y. Julian, J. C. Jackson, T. M. White
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Abstract In Alaska oilfields, non rig tubing repair has become a viable alternative to rig workovers (RWO). Tubing straddles can remediate tubing by casing ("A" annulus) communication at a tremendous savings in areas where rig workover cost is significant. This paper advances the analysis of more than 400 tubing straddles set since 1985.
J. Y. Julian, J. C. Jackson, T. M. White
openaire +1 more source
New Gas-Lift Pilot Valve Increases Gas-Lift Efficiency
SPE Latin American and Caribbean Petroleum Engineering Conference, 2001Abstract The most important component in an intermittent gas lift installation is the pilot valve. Its selection and proper calibration determine the success of the gas lift design. Recent tests performed in a field scale installation equipped with an experimental well and careful observations of the performance of real wells on ...
Ali Hernandez +4 more
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Soft Sensing for Gas-Lift Wells
SPE Annual Technical Conference and Exhibition, 2004Abstract This paper considers the use of extended Kalman Filtering as a soft-sensing technique for gas-lift wells. This technique is deployed for the estimation of dynamic variables that are not directly measured. Possible applications are the estimation of flow rates from pressure measurements or the estimation of parameters of a ...
Bloemen, H.H.J. +3 more
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Optimizing Gas Lift Operations Using Disintegrable Gas Lift Valve Plugs
SPE Artificial Lift Conference & Exhibition-North America, 2014Abstract Artificial lift encompasses approximately 96% of the US oil well market. Of the wells that use artificial lift, 10% use gas lift for production. As gas is injected into the well, the viscosity of the fluid and pressure is reduced, promoting flow to the surface.
Bobby J. Salinas +2 more
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Integrated gas lift system optimization
Theoretical Foundations of Chemical Engineering, 2013An intelligent genetic algorithm has been developed to simultaneously optimize all effective factors, namely, gas injection rate, injection depth and tubing diameter towards the maximum oil production rate with the water cut and injection pressure as the restrictions.
H. Rasouli, F. Rashidi, B. Karimi
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Proceedings of SPE Production Operations Symposium, 1991
Abstract Gas lift, a broadly applied method for producing oil, consists of gas injection into production wells to reduce the liquid density in the wells and increase the liquid inflow. Gas lift technology requires large gas volumes to be injected.
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Abstract Gas lift, a broadly applied method for producing oil, consists of gas injection into production wells to reduce the liquid density in the wells and increase the liquid inflow. Gas lift technology requires large gas volumes to be injected.
openaire +1 more source