Norman Carnahan

Houston, Texas Area
Oil & Energy

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Norman Carnahan's Overview


500+ connections

Norman Carnahan's Certifications

  • Amateur Radio Operator - Extra Class

    • Federal Communications Commission
    • License KG5PP

Norman Carnahan's Volunteer Experience & Causes

  • Volunteer Interests

    • Organizations I support:

      • AIChE, SPE, UE&FA Forum, MTS, Society of Rheology, TMS, AADE, OTC

Norman Carnahan's Publications

  • Developments in Surface Contamination and Cleaning, Volume Six; Chapter Two: Microemulsions for Cleaning Applications

    • Elsevier Inc.
    • 2013

    This chapter presents a comprehensive contemporary review of microemulsion fundamentals and applications for cleaning of surfaces.

  • Paraffin Deposition in Petroleum Production

    • JPT, vol 41, number 10, pp. 1024-1025
    • October 1989
    Authors: Norman Carnahan

    Technology Today Series
    This invited contribution summarizes thermodynamics, phase behavior and fundamentals of paraffins in petroleum systems and their tendency to precipitate and deposit in petroleum production operations.

  • Equation of State for Nonattracting Rigid Spheres

    • Journal of Chemical Physics, volume 51, number 2, pp 635-636
    • 1969
    Authors: Norman Carnahan, Kenneth E Starling

    Accurate equation of state model for fluid phase of rigid nonattracting sphere system.

  • Anchor-PiIe Design for Ocean FIoor Enivronments Using Finite-Element Analysis

    • Offshore Technology Conference, 5-8 May , 1975
    • 1975
    Authors: Norman Carnahan, Robert A Zimmer, Frank L. Carnahan

    Study of subsea anchor pile phenomena using finite-element analysis.

  • Shape factors in equations of state Part II. Repulsion phenomena in multicomponent chain fluids

    • Physical Chemistry and Chemical Physics, 2006,8, 2619-262
    • 2006
    Authors: Norman Carnahan, Erich A. Muller

    An equation of state for the multicomponent fluid phase of nonattracting rigid particles of arbitrary shape is presented. The equation is a generalization of a previously presented equation of state for pure fluids of rigid particles; the approach describes the volumetric properties of a pure fluid in terms of a shape factor, ζ, which can be back calculated by scaling the volumetric properties of pure fluids to that of a hard sphere. The performance of the proposed equation is tested against mixtures of chain fluids immersed in a “monomeric” solvent of hard spheres of equal and different sizes. Extensive new Monte Carlo simulation data are presented for 19 binary mixtures of hard homonuclear tangent freely-jointed hard sphere chains (pearl-necklace) of various lengths (three to five segments), with spheres of several size ratios and at various compositions. The performance of the proposed equation is compared to the hard-sphere SAFT approach and found to be of comparable accuracy. The equation proposed is further tested for mixtures of spheres with spherocylinders. In all cases, the equation proved to be accurate and simple to use.

  • On Boublík's Application of the CST Rigid‐Sphere Equation

    • Journal of Chemical Physics, v. 53, 472 (1970)
    • 1970
    Authors: Norman Carnahan, Kenneth E. Starling

    A review of an application of the Carnahan-Starling equation of state for rigid nonattracting spheres, pointing out that testing such a model using real fluid data is not a reliable method to evaluate relative validity of equation of state models for the fluid system of rigid nonattracting spheres.

  • Equilibrium Thermodynamic Properties of the Mixture of Hard Spheres

    • Journal of Chemical Physics, 54, 1523 (1971)
    • 1971
    Authors: G.Ali Mansoori, Norman Carnahan, Kenneth E. Starling, Thomas W. Leland

    An equation of state is proposed for the mixture of hard spheres based on an averaging process over the two results of the solution of the Percus–Yevick integral equation for the mixture of hard spheres. Compressibility and other equilibrium properties of the binary mixtures of hard spheres are calculated and they are compared with the related machine‐calculated (Monte Carlo and molecular dynamics) data. The comparison shows excellent agreement between the proposed equation of state and the machine‐calculated data.

  • Intermolecular repulsions and the equation of state for fluids

    • AIChE Journal Volume 18, Issue 6, pages 1184–1189
    • November 1972
    Authors: Norman Carnahan, Kenneth e. Starling

    This investigation demonstrates the advantages of an improved expression for intermolecular repulsions in equations of state. A highly accurate equation of state for the rigid-sphere fluid is used as the model of repulsion behavior in real fluids. A method for general usage of this new rigid-sphere equation in real fluid models is presented via reformulation of van der Waal's equation using the accurate new rigid-sphere equation to describe repulsion effects. To test this reformulation, properties of methane, ethane, propane, n-butane, isobutane, hydrogen sulfide, nitrogen, ethylene, acetylene, methyl chloride, cyclohexane, pentane and octane have been calculated. The advantage of using the accurate rigid-sphere equation was demonstrated by the general improvement in calculated properties relative to the original van der Waals and Redlich-Kwong equations. Calculations of enthalpy departures for mixtures of nitrogen and methane, propane and methane, pentane and cyclohexane, and pentane and octane also indicated the desirability of using the accurate rigid-sphere equation to describe repulsion effects in mixtures.

  • A small angle x-ray scattering study of the effect of pressure on the aggregation of asphaltene fractions in petroleum fluids under near-critical solvent conditions

    • Langmuir, 1993, 9 (8), pp 2035–2044
    • August 1993
    Authors: Norman Carnahan, Lirio Quintero, David M. Pfund, John L Fulton, Richard D. Smith, Malcolm Capel, Kosta Leontaritis

    Small-angle X-ray scattering (SAXS) is a technique that can provide information on the colloidal properties of asphaltenes-containing petroleum systems. This investigation is intended as a preliminary study of the tendency for aggregation of asphaltenes resulting from decreasing pressure at isothermal conditions. The results infer that aggregation of asphaltenes increases with reduction of pressure (and corresponding reduction of fluid density) at isothermal near-critical conditions.

  • Experimental pressure-volume-temperature relations for saturated and compressed fluid ethane

    • J. Chem. Eng. Data, 1976, 21 (4), pp 394–397
    • October 1976
    Authors: Arun K. Pal, Gary A. Pope, Yasuhiko Aria, Norman Carnahan, Riki Kobayashi

    High accuracy PVT measurements for ethane.

  • Properties of Resins Extracted from Boscan Crude Oil and Their Effect on the Stability of Asphaltenes in Boscan and Hamaca Crude Oils

    • Energy & Fuels, 1999, 13 (2), pp 309–314
    • February 1999
    Authors: Norman Carnahan, Jean-Louis Salager, Raquel Anton, Antonio Davila

    Experimental results confirm that resins isolated from Boscan crude oil have a stabilizing effect on asphaltenes in Hamaca crude oil and in Boscan crude oil. A simple experimental technique, referred to as the filter drop spreading method, was used to detect the onset of flocculation quite accurately for crude oil mixtures and for mixtures of crude oils plus additives.

Norman Carnahan's Languages

  • Spanish

    (Professional working proficiency)
  • English

    (Native or bilingual proficiency)

Norman Carnahan's Organizations

  • Upstream Engineering and Flow Assurance Forum

    Founding Chair (2011-2012)

    An international professional organization dedicated to ongoing education and training of practitioners of upstream engineering and flow assurance. The UE&FA Forum is hosted by the American Institute of Chemical Engineers. AIChE membership is not a requirement in order to join the UE&FA Forum.

  • Offshore Technology Conference

    Member, Board of Directors

    Member of the Board of Directors of the Offshore Technology Conference, one of the largest international professional conferences and exhibitions dedicated to promotion of safety and advanced technologies for discovery and development of offshore energy resources.

Norman Carnahan's Skills & Expertise

  1. Phase Behavior
  2. Thermodynamics
  3. Troubleshooting
  4. Emulsions
  5. Expert Witness
  6. Litigation Support
  7. Programming Fortran, C, C++, BASIC, HTML, CSS, PHP, SQL, Java, Javascript
  8. Pipeline Systems
  9. Technical Writing
  10. Technical Documentation
  11. Programming Python, PERL, Visual Basic, Michigan Algorithm Decoder (MAD)
  12. Equations of State
  13. Pipelines
  14. Fortran
  15. Chemical Engineering
  16. Phase
  17. Equation
  18. Petroleum Engineering
  19. Multiphase Flow
  20. Upstream
  21. Reservoir Management
  22. Petroleum
  23. Gas
  24. Field Development
  25. Offshore Drilling
  26. Gas Processing
  27. Process Engineering
  28. Subsea Engineering
  29. Reservoir Engineering
  30. Engineering
  31. Modeling
  32. Materials Science
  33. Polymers
  34. Hydraulics
  35. Energy Industry
  36. Natural Gas
  37. Oilfield
  38. Oil/Gas
  39. Petrochemical
  40. Energy
  41. Process Simulation
  42. Simulations
  43. Completion
  44. Onshore
  45. Drilling
  46. FEED
  47. Hydrates
  48. Characterization
  49. Flow Assurance
  50. Fluids

View All (50) Skills View Fewer Skills

Norman Carnahan's Additional Information

Honors and Awards:

Invited Lecture, IUPAP van der Waals Centennial Conference on Statistical Mechanics, RAI Centre, Amsterdam, The Netherlands, 1973;

Plenary Lecturer, VIII Congreso ``Física Estadística'', Universidad Carlos III de Madrid, Getafe, Spain, 25 a 27 de septiembre de 1997;

Plenary Lecturer, 1st Workshop on Global Phase Diagrams (Bunsen-Kolloquium 77), Walberberg, Germany, 21 March 1999;

Invited Plenary Lecture, Statistical Mechanics and Thermodynamics Group, Royal Society of Chemistry, Conference: Thermodynamics 2009, Imperial College London, U.K., September 23-25, 2009;

Fellow of American Institute of Chemical Engineers, (elected March 2010)

Distinguished Service Award, South Texas Section of American Institute of Chemical Engineers, September 2010

Founding Chair, Upstream Engineering and Flow Assurance Forum, American Institute of Chemical Engineers, March 2011

Board of Directors of the Offshore Technology Conference

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