Analysis of porosity parameter with involvement of elements of regional petrophysics (electrofacies) and clayness type

Full Text:


The most important estimation parameter – the open porosity coefficient (Kp) - in petrophysical laboratories is, as a rule, determined for the productive formation on the whole and without taking into account its regional heterogeneity. As a basic criterion at selecting the samples to construct the model Rp = f(Kp) a range of the porosity value is taken. In this case it is assumed that the higher is Δ Kp , the higher is the validity of the relation Rp = f(Kp). However, in practice such concept often creates the problems of ambiguity in determining the porosity by the electric resistivity of water saturated samples in different wells even within one field. This phenomenon is resulted from neglecting, on one hand, the specific features of the regional petrophysics object - facies, which are reflected in the form of well logging curves including SP, and, on the other hand, the element of the general petrophysics object – a type of clayness. The breakdown (classification) of the formation by facies, determination and taking into consideration the type of clayness as well as distinguishing and analysis of petrophysical types of rock based on the rock porosity and permeability characteristics within a formation permit to obtain satisfactory relations between electric resistivity and porosity of the rock.

About the Authors

I. B. Ratnikov
LLC «Neftecom»
Russian Federation
Deputy General Director on scientific work

R. S. Shulga
Russian Federation
Head of the Department of petrophysics

E. A. Romanov
Russian Federation
Director of petrophysics Department

S. N. Bastrikov
Russian Federation
General Director


1. Abbaszaden M.D., Fujii H. and Fujimoto F. Permeability Prediction by Hydraulic Flow Units - Theory and Application. SPE Formation Evaluation, December 1996. P. 263-271.

2. Nanz R.H. Genesis of Oligocene sandstone reservoir, Seeligson Field, Jim Wells and Kleberg Counties, Texas. - Bull. Am. Assoc. Petrol. Geologists, 1954, vol. 38. P. 96-117.

3. Pirson S.J. Sedimentalogical studies by log curve shapes. - In: Geologic well log analysis. 1970. P. 36-58.

4. Pirson S.J. SP and EH curves as redoxomorphic logs. - In: Geologic well l og analysis, Houston, Texas, Gulf. Publ. Co, 1970. P. 1-35.

5. Saitta S., Visher G.S. Subsurface study of the Southern portion of the Bluejacket delta. - In: Oklahoma City Geol. Soc. Guidebook, 1968. Pp. 53-68.

6. Shelton J.W. Stratigraphic models and general criteria for recognition of alluvial, barrier - bar, and turbidity - current sand deposits. - Bull. Am. Assoc. Petrol. Geologists, 1967, vol. 51, No. 12. Pp. 2441-2461.

7. Shelton J.W. Correlation sections and log map s in determination of sandstone trends. - Bull. Am. Assoc. Petrol. Geologists, 1972, Vol. 56, No. 8. Pp. 1541-1544.

8. Visher G.S. Depositional framework of the Biujacket-Bartesvill e sandstone. - In:

9. Oklahoma City. Geol. Soc. Guidebook. 1968. Pp. 32-51.

10. Visher G.S. How to distinguish barrier bar and channel sands. - World Oil, 1969, vol. 68, Nо. 6. Pp. 106-108.

11. Bondarik G.K., Jarg L.A. Inzhenerno-geologicheskie izyskanija: Uchebnik. [Geotechnical surveys: Textbook.]  M.: SAM p.

12. Bondarik G.K. Obshhaja teorija inzhenernoj (fizicheskoj) geologii. [The general theory of the engineering (physical) geology.]  M.: Nedra, 1981. 256 p.

13. Vendel'shtejn B.Ju. Issledovanija razrezov neftjanyh i gazovyh skvazhin metodom

14. sobstvennyh potencialov. [Research cuts oil and gas wells by own capacities.]  M.: Nedra, 1966. 271 p.

15. Vendel'shtejn B.Ju., Mancheva N.V., Petersil'e V.I. Kompleksnaja interpretacija

16. diagramm potencialov poljarizacii i estestvennoj radioaktivnosti. [Petersile VI Integrated interpretation of diagrams and polarization potentials of natural radioactivity.]  Proc. Minh and GP  1969.  Vol. 89.  pp. 72-79.

17. Gornye porody [Rocks] // Geological dictionary. Vol. 1. M.: Gosgeoltekhizdat, 1960. Pp. 187-188.

18. Gornaja poroda [The rock] // Russian geological encyclopedia. Vol. 1. SPb.: Publisher VSEGEI, 2010. P. 432.

19. Dahnov V.N. Interpretacija karotazhnyh diagramm. [Interpretation of well logs.]  М.: M .: Gostoptehidat, 1948.  390 p.

20. Latysheva M.G., Vendel'shtejn B.Ju., Tuzov V.P. Obrabotka i interpretacija materialov geofizicheskih issledovanij skvazhin [Processing and interpretation of well logging materials]  M.: Nedra, 1975  271 p.

21. Moskaleva V.N. Gornye porody [Rocks] // Geological dictionary. Vol. 2 M.: Nedra, 1978. P. 121.

22. Muromcev V.S. Jelektrometricheskaja geologija peschanyh tel  litologicheskih

23. lovushek nefti i gaza. [Electrometric geology sand bodies of lithologic oil and gas traps]  L.: Nedra, 1984.  260 p.

24. Muromcev V.S., Petrova P.K. Metodicheskie rekomendacii po vyjavleniju

25. litologicheskih lovushek nefti i gaza. [Guidelines to identify lithologic oil and gas traps.]  L., 1979.  73 p. (VNIGRI).

26. Muromcev V.S. Metodika lokal'nogo prognoza peschanyh tel  litologicheskih lovushek nefti i gaza po jelektrometricheskim modeljam facij. [Methodology local forecast sandbodies - lithologic traps oil and gas electrometric models of facies]  In the book: Methods of predicting lithologic and stratigraphic oil and gas deposits (Proc.)  L., 1981. Pp. 5-23 (VNIGRI).

27. Fertl V.H. Opredelenie glinistosti peschanikov [Determination of clay sandstone] // Neft', gaz i neftehimija za rubezhom. [Oil, Gas and Chemicals abroad]  1983.  № 10.  Pp. 22-28.

28. Chernova L.S. K voprosu o vozmozhnom vyjavlenii pereryvov v osadkonakoplenii litologicheskimi metodami. [To a question about the possible detection of breaks in sedimentation lithological methods.] – In the book: Tectonics and oil and gas regions of Western Siberia. 1971.  Pp. 120-123 (Proc. SNIIGGiMS, vol. 132).

29. Chernyshev N.I. Postroenie paleogeograficheskih kart po dannym jelektrokarotazha. [Construction of paleogeographic maps according to electric logging]  In the book: Questions of processing and interpretation of geophysical observations.  Perm: 1972.  No. 10.  Pp. 129-133.

Supplementary files

For citation: Ratnikov I.B., Shulga R.S., Romanov E.A., Bastrikov S.N. Analysis of porosity parameter with involvement of elements of regional petrophysics (electrofacies) and clayness type. Gornye nauki i tekhnologii = Mining Science and Technology (Russia). 2016;(2):50-65.

Views: 322


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

ISSN 2500-0632 (Online)