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WinPipeD
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5090 Richmond Avenue, No. 378,
Houston, TX 77056; USA
713/827-2662, Fax: 713/850-9135, dshaw@neosoft.com
http://www.neosoft.com/~dshaw/winpiped.html
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Technical Description of WinPipeD V.1.0.
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WinPipeD is designed to carry out all the standard calculations required in
designing multiphase pipe systems. It performs pressure, temperature, holdup
and flow regime calculations in a single pipe, using black-oil assumptions
about the fluids, for steady-state flow. Sufficient correlations are
provided to allow the correct equations to be used for the situation being
analyzed and to allow for a sensitivity analysis.
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Technology
Multiphase Flow
The following multiphase steady-state flow correlations are provided as
standard:
Aziz, Govier and Fogarasi
Mukherjee and Brill
Dukler, Eaton and Flanigan
Beggs and Brill
Orkiszewski
Duns and Ros
Hagedorn and Brown
Poettman and Carpenter
Baxendell and Thomas
Fancher and Brown
Griffith and Wallis correction to Hagedorn and Brown
Triggia correction to Orkiszewski
Palmer correction to Beggs and Brill
More details can be found in the references below.
Temperature
(Professional version only). Temperature effects are fully coupled with the
hydraulics, to allow rigorous prediction of the temperature profile.
Alternatively, fixed linear or exponential profiles can be assumed. A
single liquid enthalpy and gas enthalpy is provided by the user, subject to
black-oil PVT assumptions. A slip-corrected mixture enthalpy is then
computed. As a convenience, thermal conductivity is calculated by the
program for:
Wellbores
Surface pipes
Buried Pipes
PVT
Black-oil PVT calculations are made internally using any combination of
these correlations:
Solution Gas-Oil Ratio and Bubble Point:
Lasater
Standing
Vazquez and Beggs
Glaso
Oil Formation Volume Factor:
Vazquez and Beggs
Standing
Glaso
Z-Factor:
Hall-Yarborough
Standing
Dranchuk, Purvis and Robinson
Gopal
Oil Viscosity:
Beggs and Robinson
Glaso
More details can be found in the references below.
Software
WinPipeD was designed as a Windows program from the start, and includes
numerous ease-of-use features. It integrates with the overall Windows
environment via the clipboard, allowing office productivity tools to be
used together with it. The Basic version runs under Windows 3.x; WinPipeD
Professional comes in a Windows 95 / NT version also.
The program is split in two: a Windows interface program and a calculation
DLL. The interface is written using Borland Delphi and the calculations are
in ANSI C compiled with Microsoft Visual C++. It has been compiled to take
advantage of the 486 math coprocessor: a plain 386 or 286 DLL is available
separately.
Source code is available for either the interface, the DLL or both. The
interface between the two is very flexible, so DLL source for the
calculations makes a very valuable research or training tool.
Differences between the Basic and Professional Versions
The Basic Version of WinPipeD contains all the features for regular,
technical use. However, WinPipeD Professional has the following advantages:
Unrestricted single-user license
Full on-line documentation and Windows Help
Metric units capability
Temperature prediction by energy balance
References
General
Govier, G. W. & Aziz, K. (1972): "The Flow of Complex Mixures in Pipes",
Van Nostrand Reinhold Co., New York.
Brill, J. P. & Beggs, H. D. (1991): "Two-Phase Flow in Pipes" (6th ed.),
University of Tulsa Press, Tulsa.
Chisholm, D. (1983): "Two-Phase Flow in Pipelines and Heat Exchangers",
Pitman Press, Bath.
Katz, D. L. et al (1959): "Handbook of Natural Gas Engineering",
McGraw-Hill Book Co., New York.
Colebrook, C. F. (1938): J Inst Civil Engrs, 11, p. 133.
Moody, L. F. (1944): "Friction Factors for Pipe Flow", Trans ASME, 66, p.
671.
Multiphase Flow
Aziz, K., Govier, G. W. & Fogarasi, M. (1972): "Pressure Drop in Wells
Producing Oil and Gas", J Candn Pet Tech, (July-Sept) pp. 38-48.
Mukherjee, H. (1979): "An Experimental Study of Inclined Two-Phase Flow",
Ph.D. Thesis, U of Tulsa.
Mukherjee, H. & Brill, J. P. (1985): "Empirical Equations to Predict Flow
Patterns in Two-Phase Inclined Flow", Int J Multiphase Flow, 11 (3), pp.
299-315.
Dukler, A. E. et al (1969): "Gas-Liquid Flow in Pipelines, Inst. Research
Results", AGA-API Project NX-28 (May).
Eaton, B. A. et al (1967): "The Prediction of Flow Patterns, Liquid Holdup
and Pressure Losses Occurring During Continuous Two-Phase Flow in
Horizontal Pipelines", Trans AIME, p. 815.
Flanigan, O. (1958): "Effect of Uphill Flow on Pressure Drop in Design of
Two-Phase Gathering Systems", Oil & Gas J, 56, (Mar) p. 132.
Beggs, H. D. & Brill, J. P. (1973): "A Study of Two-Phase Flow in Inclined
Pipes", J Pet Tech, (May) pp. 607-617.
Orkiszewski, J. (1967): "Predicting Two-Phase Pressure Drops in Vertical
Pipes", J Pet Tech, (June) pp. 829-838.
Duns, H. & Ros, N. C. J. (1963): "Vertical Flow of Gas and Liquid Mixtures
in Wells", Proceedings 6th World Petr. Congress, p. 451.
Hagedorn, A. R. & Brown, K. E. (1965): "Experimental Study of Pressure
Gradients Occurring During Continuous Two-Phase Flow in Small-Diameter
Vertical Conduits", J Pet Tech, (April) pp. 475-484.
Poettman, F. H. & Carpenter, P. G. (1952): "The Multiphase Flow of Gas, Oil
and Water Through Vertical Flow Strings With Application to the Design of
Gas-Lift Installations", Drill and Prodn Practices API, pp. 257-317
Baxendell, P. B. & Thomas, R. (1961): "The Calculation of Pressure
Gradients in High-Rate Flowing Wells", J Pet Tech, (Oct) pp. 1023-1028.
Fancher, G. H. & Brown, K. E. (1963): "Prediction of Pressure Gradients for
Multiphase Flow in Tubing", Soc Pet Eng J, (March) pp. 59-69.
Griffith, P. & Wallis, G. B. (1961): "Two-Phase Slug Flow", J Heat
Transfer; Trans ASME, (Aug) pp. 307-320.
Palmer, C. M. (1975): "Evaluation of Inclined Pipe Two-Phase Liquid Holdup
Correlations Using Experimental Data", M.S. Thesis, U of Tulsa.
PVT
Lasater, J. A. (1958): "Bubble Point Pressure Correlation", Trans AIME, p.
379.
Standing, M. B. (1947): "A General Pressure-Volume-Temperature Correlation
... for Mixtures of California Oils and Greases", Drill and Prodn Practices
API.
Vazquez and Beggs (1980) J Petr. Tech. (June) p. 968
Glaso (1980) J Petr. Tech. (May) p. 785
Yarborough, L. & Hall, K. R. (1974): "How to Solve Equation of State for
Z-Factors", Oil & Gas J, (Feb) p. 86.
Standing, M. B. & Katz, D. L. (1942): "Density of Natural Gases", Trans
AIME, p. 140.
Dranchuk, Purvis and Robinson (1974): Institute of Petroleum Technical
Series, No. IP74-008
Gopal (1977): Oil & Gas J, (August 8), p. 58
Beggs and Robinson (1975): J Petr. Tech. ( Sept), p. 1140
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