| A novel non-iterative method for the prediction of the PVT behavior of reservoir fluids N Varotsis, V Gaganis, J Nighswander, P Guieze SPE Annual Technical Conference and Exhibition?, SPE-56745-MS, 1999 | 81 | 1999 |
| Accurate determination of aromatic groups in heavy petroleum fractions using HPLC-UV-DAD N Pasadakis, V Gaganis, N Varotsis Fuel 80 (2), 147-153, 2001 | 51 | 2001 |
| Phase behavior of systems comprising North Sea reservoir fluids and injection gases N Varotsis, G Stewart, AC Todd, M Clancy Journal of petroleum technology 38 (11), 1221-1233, 1986 | 51 | 1986 |
| Predicting formation fluid property through downhole fluid analysis using artificial neural network P Hegeman, C Dong, C Woodburn, G Birkett, N Varotsis, V Gaganis US Patent 7,966,273, 2011 | 49 | 2011 |
| Machine Learning Methods to Speed up Compositional Reservoir Simulation (SPE 154505) V Gaganis, N Varotsis 74th EAGE Conference and Exhibition incorporating EUROPEC 2012, cp-293-00247, 2012 | 44 | 2012 |
| An integrated approach for rapid phase behavior calculations in compositional modeling NV Vassilis Gaganis n Journal of Petroleum Science and Engineering 118 (2014) 74–87 118, 74-87, 2014 | 40* | 2014 |
| Application of artificial neural networks to downhole fluid analysis P Hegeman, C Dong, N Varotsis, V Gaganis SPE Reservoir Evaluation & Engineering 12 (01), 8-13, 2009 | 37 | 2009 |
| PVT analysis for oil reservoirs H Freyss, P Guieze, N Varotsis, A Khakoo, K Lestelle, D Simper The Technical Review 37 (1), 4-15, 1989 | 28 | 1989 |
| Gas hydrate dissociation affecting the permeability and consolidation behaviour of deep sea host sediment D Marinakis, N Varotsis, C Perissoratis Journal of natural gas science and engineering 23, 55-62, 2015 | 25 | 2015 |
| Modelling gas hydrate thermodynamic behaviour: theoretical basis and computational methods D Avlonitis, N Varotsis Fluid phase equilibria 123 (1-2), 107-130, 1996 | 25 | 1996 |
| A general framework of model functions for rapid and robust solution of Rachford–Rice type of equations V Gaganis, D Marinakis, N Varotsis Fluid phase equilibria 322, 9-18, 2012 | 24 | 2012 |
| Rapid quantitative determination of aromatic groups in lubricant oils using gel permeation chromatography N Varotsis, N Pasadakis Industrial & engineering chemistry research 36 (12), 5516-5519, 1997 | 24 | 1997 |
| A robust prediction method for rapid phase-behavior calculations N Varotsis SPE reservoir engineering 4 (02), 237-243, 1989 | 23 | 1989 |
| An improved BIP matrix decomposition method for reduced flash calculations V Gaganis, N Varotsis Fluid Phase Equilibria 340, 63-76, 2013 | 22 | 2013 |
| Non-iterative phase stability calculations for process simulation using discriminating functions V Gaganis, N Varotsis Fluid phase equilibria 314, 69-77, 2012 | 20 | 2012 |
| Optimization of the HPLC separation of aromatic groups in petroleum fractions N Pasadakis, N Varotsis Fuel 79 (12), 1455-1459, 2000 | 20 | 2000 |
| Characterization of hydrotreating catalysts using the principal component analysis N Pasadakis, C Yiokari, N Varotsis, C Vayenas Applied Catalysis A: General 207 (1-2), 333-341, 2001 | 17 | 2001 |
| A Novel Approach for the Quantitation of the Hydrocarbon Groups in Heavy Petroleum Fractions by HPLC− RI Analysis N Pasadakis, N Varotsis Energy & fuels 14 (6), 1184-1187, 2000 | 17 | 2000 |
| Reservoir fluid characterisation using gas chromatography-mass spectrometry N Varotsis, P Guieze Journal of Petroleum Science and Engineering 15 (1), 81-89, 1996 | 15 | 1996 |
| Solubility measurements of (methane+ ethane+ propane) mixtures in the aqueous phase with gas hydrates under vapour unsaturated conditions D Marinakis, N Varotsis The Journal of Chemical Thermodynamics 65, 100-105, 2013 | 11 | 2013 |
