Abstract
It is highly significant to determine precisely and rapidly the compressibility factor (Z-factor) of natural gases, a commonly used parameter in many engineering calculations concerning oil and gas reservoir development, such as material balance analysis, estimation of oil/gas in place, gas flow theory, numerical reservoir simulation, pipeline design and so on. A new Z-factor correlation, based on the Bender E (1970) equation of state and corresponding state principle, is developed in this paper, and then a new method for estimating gas compressibility factors continuously is proposed with the nonlinear regression analysis technique. The calculated results of DPR, HY, DAK correlations, commonly used in oil and gas reservoir engineering at present, are compared with those of the new method presented here, using standard data of Z-factor modified by the paper. The results of comparative analysis, based on isotherm error statistics and error distribution maps, show that the new method boasts a wider scope of application and a smoother error distribution. For the standard data points of Z-factor within the general pressure-temperature range (i.e., 0.2 ≤ ppr ≤ 15 & 1.05 ≤ Tpr ≤ 3.0) and relatively high-temperature & high-pressure range (i.e., 15 ≤ ppr ≤ 30 & 1.4 ≤ Tpr ≤ 2.8), its average absolute error (AAE) is 0.305% and 0.065% respectively, distinctly superior to the above three methods. Those approaches for determining gas compressibility factors based on correlations avoid the shortcomings of experimental measurements and type curves which are inefficient, time-consuming, and incapable of continuous estimations. Thus, the new method is recommended to determine Z-factor. The pseudo-critical parameters (i.e., ppc & Tpc) should be corrected beforehand in the presence of non-negligible non-hydrocarbon impurities in the gas mixture. The new method for calculating gas compressibility factors based on Bender (1970) equation of state can estimate the Z value quickly, accurately, and continuously under various pressure and temperature conditions through a simple iteration procedure, helpful to provide valuable reference for relevant engineering applications by virtue of its desirable calculation accuracy.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Van der Waals, J.D.: Over de Continuiteit van den Gas-en Vloeistoftoestand. Leiden University, Leiden (1873)
Van der Waals, J.D.: The equation of state for gases and liquids. Nobel Lect. Phys., 254–265 (1910)
Giglio, F., Landolfi, G., Moro, A.: Integrable extended Van der Waals model. Physica D 333, 293–300 (2016)
Pennini, F., Plastino, A.: Statistical complexity, virial expansion, and Van der Waals equation. Physica A 458, 239–247 (2016)
Wei, Z., Changming, X., Yongkai, Z.: Modified Van der Waals equation and law of corresponding states. Physica A 471, 295–300 (2017)
Redlich, O., Kwong, J.N.S.: On the thermodynamics of solutions. V. An equation of state. Fugacities of gaseous solutions. Chem. Rev. 44(1), 233–244 (1949)
Djordjević, B.D., Mihajlov, A.N., Grozdanić, D.K., et al.: Applicability of the Redlich-Kwong equation of state and its modifications to polar gases. Chem. Eng. Sci. 32(9), 1103–1107 (1977)
Lielmezs, J., Howell, S.K., Campbell, H.D.: Modified Redlich-Kwong equation of state for saturated vapour-liquid equilibrium. Chem. Eng. Sci. 38(8), 1293–1301 (1983)
Soave, G.: 20 years of Redlich-Kwong equation of state. Fluid Phase Equilib. 82, 345–359 (1993)
Markocic, E., Knez, Z.: Redlich-Kwong equation of state for modelling the solubility of methane in water over a wide range of pressures and temperatures. Fluid Phase Equilib. 408, 108–114 (2016)
Soave, G.: Equilibrium constants from a modified Redlich-Kwong equation of state. Chem. Eng. Sci. 27(6), 1197–1203 (1972)
Kadhem, O.M.A., Al-Sahhaf, T.A., Hamam, S.E.M.: Parameters of the modified Soave-Redlich-Kwong equation of state for some chlorofluorocarbons, hydrofluorocarbons and fluorocarbons. J. Fluorine Chem. 43(1), 87–104 (1989)
Ghanbari, M., Check, G.R.: New super-critical cohesion parameters for Soave-Redlich-Kwong equation of state by fitting to the Joule-Thomson inversion curve. J. Supercrit. Fluids 62, 65–72 (2012)
Janeček, J., Paricaud, P., Dicko, M., et al.: A generalized Kiselev crossover approach applied to Soave-Redlich-Kwong equation of state. Fluid Phase Equilib. 401, 16–26 (2015)
Ghanbari, M., Ahmadi, M., Lashanizadegan, A.: A comparison between Peng-Robinson and Soave-Redlich-Kwong cubic equations of state from modification perspective. Cryogenics 84, 13–19 (2017)
Peng, D., Robinson, D.B.: A new two-constant equation of state. Ind. Eng. Chem. Fundam. 15(1), 59–64 (1976)
Li, C., Peng, Y., Dong, J., et al.: Prediction of the dew point pressure for gas condensate using a modified Peng-Robinson equation of state and a four-coefficient molar distribution function. J. Nat. Gas Sci. Eng. 27(2), 967–968 (2015)
Kou, J., Sun, S.: Unconditionally stable methods for simulating multi-component two-phase interface models with Peng-Robinson equation of state and various boundary conditions. J. Comput. Appl. Math. 291, 158–182 (2016)
Acqua, D.D., Terenzi, A., Leporini, M., et al.: A new tool for modelling the decompression behaviour of CO2 With impurities using the Peng-Robinson equation of state. Appl. Energy 206, 1432–1445 (2017)
Lopez-Echeverry, J.S., Reif-Acherman, S., Araujo-Lopez, E.: Peng-Robinson equation of state: 40 years through cubics. Fluid Phase Equilib. 447, 39–71 (2017)
Kamerlingh Onnes, H.K.: The equation of state of gases and liquids as a power series. Archives Néelandaises 6, 874–888 (1901)
Beattie, J.A., Bridgeman, O.C.: A new equation of state for fluids. Proc. Am. Acad. Arts Sci. 63(5), 229–308 (1928)
Benedict, M., Webb, G.B., Rubin, L.C.: An empirical equation for thermodynamic properties of light hydrocarbons and their mixtures: I. Methane, ethane, propane and n-butane. J. Chem. Phys. 8(4), 334–345 (1940)
Benedict, M., Webb, G.B., Rubin, L.C.: An empirical equation for thermodynamic properties of light hydrocarbons and their mixtures: II. Mixtures of methane, ethane, propane, and n-butane. J. Chem. Phys. 10, 747–758 (1942)
Orye, R.V.: Prediction and correlation of phase equilibria and thermal properties with the BWR equation of state. Ind. Eng. Chem. Process. Des. Dev. 8(4), 579–588 (1969)
Strobridge, T.R.: The thermodynamic properties of nitrogen from 64 to 300 *K between 0.1 and 200 atmospheres, NBS Technical Note No. 129, pp. 1–16. The Office of Technical Services, US Department of Commerce, Washington D.C. (1962)
Strobridge, T.R.: The thermodynamic properties of nitrogen from 114 to 540 R between 1.0 and 3000 psia supplement A (British Units), pp. 1–16. US Department of Commerce, National Bureau of Standards, Washington D.C. (1963)
Vennix, A.J., Kobayashi, R.: An equation of state for methane in the gas and liquid phases. AIChE J. 15(6), 926–931 (1969)
Sandler, S.I.: Models for Thermodynamic and Phase Equilibria Calculations, p. 137. Marcel Dekker Inc., New York (1994)
Hall, K.R., Yarborough, L.: A new equation of state for Z-factor calculations. Oil Gas J. 71(7), 82–85, 90, 92 (1973)
Carnahan, N.F., Starling, K.E.: Equation of state for nonattracting rigid spheres. J. Chem. Phys. 51(2), 635–636 (1969)
Morsy, T.E.: Extended Benedict-Webb-Rubin equation of state. Application to eight fluorine compounds. J. Chem. Eng. Data 15(2), 256–265 (1970)
Starling, K.E., Powers, J.E.: Enthalpy of mixtures by modified BWR equation. Ind. Eng. Chem. Fundam. 9(4), 531–537 (1970)
Cox, K.W., Bono, J.L., Kwok, Y.C., et al.: Multiproperty analysis. Modified BWR equation for methane from PVT and enthalpy data. Ind. Eng. Chem. Fundam. 10(2), 245–250 (1971)
McFee, D.G., Mueller, K.H., Lielmezs, J.: Comparison of Benedict-Webb-Rubin, starling and Lee-Kesler equations of state for use in P-V-T calculations. Thermochim. Acta 54(1–2), 9–25 (1982)
Lielmezs, J.: Comparison of Benedict-Webb-Rubin and starling equations of state for use in P-V-T calculations of binary mixtures. Thermochim. Acta 152(2), 341–358 (1989)
Modisette, J.L.: Equation of state tutorial. In: Pipeline Simulation Interest Group Annual Meeting, Savannah, pp. 1–21 (2000)
Jacobsen, R.T., Stewart, R.B.: Thermodynamic properties of nitrogen including liquid and vapor phases from 63 K to 2000 K with pressures to 10,000 bar. J. Phys. Chem. Ref. Data 2(4), 757–922 (1973)
Lee, B.I., Kesler, M.G.: A generalized thermodynamic correlation based on three-parameter corresponding states. AIChE J. 21(3), 510–527 (1975)
Dranchuk, P.M., Purvis, R.A., Robinson, D.B.: Computer calculation of natural gas compressibility factors using the standing and Katz correlation. In: Petroleum Society of Canada Annual Technical Meeting, Edmonton (1973)
Standing, M.B., Katz, D.L.: Density of natural gases. Trans. AIME 146(1), 140–149 (1942)
Dranchuk, P.M., Abou-Kassem, J.H.: Calculation of Z factors for natural gases using equations of state. J. Can. Pet. Technol. 14(3), 34–36 (1975)
Takacs, G.: Comparisons made for computer Z-factor calculations. Oil Gas J. 74(51), 64–66 (1976)
Takacs, G.: Comparing methods for calculating Z-factor. Oil Gas J. 87(20), 43–46 (1989)
Tiab, D.: Gas Reservoir Engineering, pp. II.37–II.41. University of Oklahoma, Oklahoma (2000)
Li, S.L.: Natural Gas Engineering, 2nd edn., pp. 31–33. Petroleum Industry Press, Beijing (2008)
Zhang, M.L., Hu, J.G., Qu, X.F.: Evaluating the methods of calculating gas deviation factor by use of state equation. Nat. Gas. Ind. 23(2), 69–71 (2003)
Bender, E.: Equations of state exactly representing the phase behavior of pure substances. In: Proceedings of the 5th Symposium on Thermophysical Properties, pp. 227–235. American Society of Mechanical Engineers, New York (1970)
Bender, E.: An equation of state for predicting vapour-liquid equilibria of the system N2-Ar-O2. Cryogenics 13(1), 11–18 (1973)
Bender, E.: Equations of state for ethylene and propylene. Cryogenics 15(11), 667–673 (1975)
Bühner, K., Maurer, G., Bender, E.: Pressure-enthalpy diagrams for methane, ethane, propane, ethylene and propylene. Cryogenics 21(3), 157–164 (1981)
Mohr, P.J., Newell, D.B., Taylor, B.N.: CODATA recommended values of the fundamental physical constants: 2014. J. Phys. Chem. Ref. Data 45(4), 043102-1–043102-74 (2016)
Mohr, P.J., Newell, D.B., Taylor, B.N.: CODATA recommended values of the fundamental physical constants: 2014. Rev. Mod. Phys. 88(3), 035009-1–035009-73 (2016)
Poettmann, F.H., Carpenter, P.G.: The multiphase flow of gas, oil, and water through vertical flow strings with application to the design of gas-lift installations. Drill. Prod. Pract. API-52-257, 280–291 (1952)
Katz, D.L., Cornell, D., Vary, J.A., et al.: Handbook of Natural Gas Engineering, pp. 106–107, 710–717. McGraw-Hill Book Company, New York (1959)
Smith, R.V.: Practical Natural Gas Engineering, 2nd edn., pp. 255–277. Pennwell Publishing Company, Tulsa (1990)
Zhang, L.X., Guo, C.Q.: A calculation method for Z-factor of natural gas based on BWRS equation. Oil Drill. Prod. Technol. 40(6), 775–781 (2018)
Zhang, L.X., Guo, C.Q.: A new method for determining the natural gas compressibility factor. Chem. Eng. Oil Gas 48(1), 91–98 (2019)
Liu, H.Y.: Computational Methods, pp. 15–16. Beijing University of Posts and Telecommunications Press, Beijing (2010)
Acknowledgments
The project is supported by the National Science and Technology Major Project of China (Grant No. 2016ZX05015002 & 2017ZX05030003). The authors of the paper would like to express heartfelt gratitude to the Department of Middle East E&P and Department of Asia-Pacific E&P, Research Institute of Petroleum Exploration and Development (RIPED), PetroChina.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Zhang, Lx. et al. (2022). A New Method for Estimating Compressibility Factors of Natural Gases Based on Bender Equation of State. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2021. IFEDC 2021. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-2149-0_196
Download citation
DOI: https://doi.org/10.1007/978-981-19-2149-0_196
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-19-2148-3
Online ISBN: 978-981-19-2149-0
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)