Identification of gas reservoirs and determination of their parameters by the combination of radioactive logging methods


  • V. V. Kulyk Institute of Geophysics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
  • M. S. Bondarenko Institute of Geophysics, National Academy of Sciences of Ukraine, Kyiv, Ukraine



gas reservoirs, pressure-temperature conditions of occurrence, combination of neutron logging and density logging, identification of gas reservoirs, apparent porosities, true porosity, gas saturation coefficient


The paper proposes a new approach for using of combination of radioactivity logging, which allows determining a set of gas reservoir parameters (nature of saturation, true porosity, gas saturation coefficient) taking into account influence of the pressure and temperature conditions of occurrence. Analysis of the ways of averaging the neutron-apparent porosity and the density-apparent porosity for obtaining the true porosity was made. Method of determination of gas saturation, which uses the same combination of radioactivity logging as in determining the true porosity of gas reservoirs, was developed. The results presented in the paper, were obtained over a wide range of depth (up to 10 km). Application of developed approaches for determination of petro-physical parameters of gas reservoirs is demonstrated by the example of cased coalbed methane well.


Alger R. P., Dewal J. T., 1969.Сombined sidewall neutron porosity gamma-gamma tool. USA. Pat. 3453433.

Alimoradi A., Moradzadeh A., Bahtiari M. R., 2011. Methods of water saturation estimation: Historical perspective. J. Petroleum Gas Eng. 2(3), 45—53.

Bondarenko М. S., Dokuka O. M., Shulga R. V., Kulyk V. V., 2014. Computer program «Complexional interpretation of radioactive logging data in coalbed methane sections». Ukraine. Certificate of registration 57929 (in Ukrainian).

Chilingar G. V., Serebryakov V. A., Robertson J. O., 2002. Origin and prediction of abnormal formation pressures. Amsterdam: Elsevier, 374 p.

Cholet H., 2000. Well Production Practical Handbook. Paris: Technip, 543 p.

DasGupta U., 1997. Method for determining porosity in an invaded gas reservoir. USA. Pat. 5684299.

Ellis D. V., Singer J. M., 2008. Well Logging for Earth Scientists, 2nd ed. Dordrecht: Springer, 692 p.

Fertl W. H., Chilingarian G. V., Rieke H. H., 1976. Abnormal formation pressures. Implications to exploration, drilling and production of Oil and Gas Resources. Amsterdam: Elsevier, 382 p.

Gaymard R., Poupon A., 1968. Response of neutron and formation density logs in hydrocarbon bearing formations. The Log Analyst 9, 3—12.

Golovatskaia I. V., Gulin Yu. A., Enikeeva F. Kh., Velizhanin V. A., Zhuravlev B. K., Koziar V. F., Ruchkin A. V., Rezvanov R. A., 1984. The determination of capacitive properties and lithology of rocks in section of oil and gas wells by data of radioactive and acoustic loggings. Kalinin: VNIGIK, 112 p. (in Russian).

Hallenburg J. K., 1998. Introduction to geophysical formation evaluation. New York: Lewis Publ., 183 p.

Hunt E., Pursell D., 1997. Fundamentals of log analysis. Part 8: Determination porosity from density, neutron and acoustic logs. World oil July, 173—176.

Ijasan O., Torres-Verdín C., Preeg W. E., 2013. Interpretation of porosity and fluid constituents from well logs using an interactive neutron-density matrix scale. Interpretation 1(2), T143—T155.

Interpretation of logging results of oil and gas wells, 1988. Ed. V. M. Dobrynin Moscow: Nedra, 476 p. (in Russian).

Кulyk V. V., Bondarenko М. S., 2013a. Determination of petrophysical parameters of technogenic methane reservoirs in section of coal-rock massive with the help of radioactive logging. Proceedings of UkrNDMI NAN Ukraine 13(2), 191—210 (in Russian).

Кulyk V. V., Bondarenko М. S., 2013b. Increase of informativity of radioactive logging in the determination of parameters of unconventional gas reservoirs. In: Theoretical and applied aspects of geoinformatics: collection of scientific papers. Kyiv: IG NASU Publ., P. 32—40 (in Ukrainian).

Кulyk V., Bondarenko М., 2014. Method of gas saturated rocks identification and determination of their porosity. Ukraine. State Register of Patents of Ukraine, Kiev, UA, Pat. 95425 (in Ukrainian).

Кulyk V., Bondarenko М., Кryvonos О., 2014. Method of determination of gas-bearing reservoirs parameters. Ukraine. State Register of Patents of Ukraine, Kiev, UA, Pat. 106560 (in Ukrainian).

Lukin A. E., 2014a. Geophysical methods and the problem of unconventional natural gas sources detection. Geologicheskiy zhurnal (1), 7—23 (in Russian).

Lukin A. E., 2014b. Hydrocarbon potential of great depths and prospects of its mastering in Ukraine. Geofizicheskiy zhurnal 36(4), 3—21 (in Russian).

Mao Z. Q., 2012. The physical dependence and the correlation characteristics of density and neutron logs. Petrophysics 42(5), 438—443.

Melik-Pashaev V. S., Khalimov E. M., Seregina V. N., 1983. Abnormal formation pressures in oil and gas deposits. Moscow: Nedra, 181 p. (in Russian).

Nuclear well geophysics. Handbook of geophysist 1990. Eds. O. L. Kuznetsov, A. L. Polyachenko. 2d ed. Moscow: Nedra, 318 p. (in Russian).

Petrenko V. I. Khoroshilova L. V., Saitov R. F., 2004. Thermobaric parameters of hydrocarbon reservoirs and their effect on the gas-phase mass transfer. Transactions of the NCSTU. A series of "Natural science" 1(7) (in Russian).

Reeves S. R., Kuuskraa J. A., Kuuskraa V. A., 1998. Deep gas poses opportunities, challenges to U.S. operators. Oil&Gas J May4, 133—140.

Reid R. S, Prausnitz J. M., Sherwood T. K., 1977. Properties of gases and liquids. 3d ed. New York: McGraw-Hill Book Company, 592 p.

Serra O., 1984. Fundamentals of well-log interpretation. Amsterdam: Elsevier, 423 p.

Thaddeus S. D., Cook T. A., 2001. Summary of Deep Oil and Gas Wells in the United States Through 1998. Geologic Studies of Deep Natural Gas Resources. U. S. Geological Survey Digital Data Series 67.

William C. L., Plisga G. J., 2005. Standard Handbook of Petroleum and Natural Gas Engineering. 2d ed. Amsterdam: Elsevier, 450 p.




How to Cite

Kulyk, V. V., & Bondarenko, M. S. (2016). Identification of gas reservoirs and determination of their parameters by the combination of radioactive logging methods. Geofizicheskiy Zhurnal, 38(2), 106–119.