Geological and mathematical description of the rocks strain during behaviour of the producing solid mass in compression (tension)


Affiliations

  • Candidate of geological and mineralogical sciences, Associate Professor, Department of Applied Geophysics, Russian Federation
  • Candidate of Science Engineering, Associate Professor, Head, Department of Oil and Gas Well Drilling, Russian Federation
  • Industrial University of Tyumen, Assistant, Department of Oil and Gas Well Drilling, Tyumen, Russian Federation

Abstract

A new approach is presented for studying the patterns of structural changes in reservoirs in the process of volumetric strains of a producing solid mass during its compression (behaviour in tension) strain according to the identified lithological types limited to sedimentary rocks of Western Siberia. Object: The purpose of this study is to develop analytical expressions in the study of volumetric strain of reservoir rocks (the beginning of dilatancy) in accordance with the individual breakdown point of lithological types of the producing solid mass during its compression (behaviour in tension) strain Methods: The mathematical methods used in this scientific work are presented by the probability theory, and the geo-mechanical features of sedimentary rocks are studied on the basis of the kinetic theory of solids destruction. Findings: Individual patterns of changes have been revealed in the reservoirs breakdown point during the transition from low-permeability to medium- and highpermeability. The time of the initial development of volumetric strains (the beginning of dilatancy) in sand shale reservoirs is calculated. Conclusions: The obtained patterns indicate the fact that low-permeability, medium-permeability and highpermeability rocks should be considered separately when studying the work of the pay zone on tension (this geomechanical process will be characteristic of the production wells operation) and on compression (this geo-mechanical process will be characteristic of the injection wells operation).

Keywords

Strain: Eigenpolarization parameter; sand shale reservoir; producing solid mass; compression and tension of the solid mass; permeability

Full Text:

References

Katanov, Yu. E. (2018): Geological and mathematical modelling of reservoir strain during the oil reserves recovery: 25.00.12: thesis paper. ... Cand. geological and mineralogical sciences/Yu. E. Katanov; FSBEI HE “ Industrial University of Tyumenâ€. - Tyumen, 124 p.

Katanov, Yu. E. (2017): Modelling of strain-spatial variability of diverter technologies in conditions of stochastic uncertainty/Yu. E. Katanov, A.K. Yagafarov// Scientific and technological journal “Oil and Gas Technologies†ISSN 1815-2600. - No.2 (109). - P.49-52.

Katanov, Yu. E. (2016): Estimation of the reservoir rocks strain probability in ambiguous conditions/Yu. E. Katanov, A.K. Yagafarov//Natural and technical sciences, Geophysics, geophysical methods of exploration activity ISSN 1684-2626. - No.4 (94). - P. 41-49.

Katanov, Yu. E. (2017): Numerical modelling of changes in permeability and rock margin stability/Yu. E. Katanov, A.K. Yagafarov//Scientific and technological journal “Oil and Gas Technologies†ISSN 1815-2600. No.1 (108). - P.40-43.

Nedolivko, N. M. (2012): Fundamentals of management theory: college-level study guide/N. M. Nedolivko, A.V. Yezhova. - Tomsk: Tomsk Polytechnic University Publishing House, 172 p.

Polyakov, E. A. (1981): Methods for studying the physical properties of oil and gas reservoirs. A. Polyakov. - Moscow: Publishing house “Nedraâ€, 182p.

Prager, V. (1963): Introduction to Continuum Mechanics, transl. from German/V. Prager. - Moscow: Foreign Literature Publishing House, 311 p.

Yu. E. Katanov, A.K. Yagafarov, I. P. Popov et al (2019): Ministry of Education and Science of the Russian Technologies for increasing well productivity and impact on hydrocarbon deposits at the fields of Western Siberia: monograph/Ministry of Education and Science of the Russian Federation, Industrial University of Tyumen. - Tyumen: Library and Publishing Complex of the Federal State Budgetary Educational Institution of Higher Education “Industrial University of Tyumenâ€, 204 p.

Fesik, S.P. (1982): Mohr’s theory of strength/Guide of material resistance/S.P. Fesik. - 2nd ed., 280 p.

Khanin A.A. (1965): Fundamentals of oil and gas reservoir rocks studies/A. A. Khanin. - Moscow: Publishing house “Nedraâ€, 310 p.

Khanin A.A. (1976): Petrophysics of oil and gas formations/ A. A. Khanin. - Moscow: Publishing house “Nedraâ€, 1976. - 295 p.

Khanin A.A. Oil and gas reservoir rocks, and their study/ A.A. Khanin. - Moscow: Publishing house “Nedraâ€, p. 368.

Yamshchikov, V.S. (1982): Methods and means of research and control of rocks and processes/V.S. - Moscow: Publishing house “Nedraâ€, 296 p.

Fossen H. (2007): Deformation bands in sandstone/H. Fossen, R. A. Schultz, Z. K. Shipton, K. Mair. - a review// J.Geolog. Soc. of London. No. 164. - P. 755-769.

Bied A. El. (2002): Microstructure of shear zones in Fontainebleau sandstone/A. El. Bied, J. Sulema, F. Martineau//Int. J. Rock Mech. Min., V. 39. - P. 917-932.

Rudnicki J. W. (1975): Condition for localization of plastic deformation in pressure sensitive dilatant material/J. W. Rudnicki, J. R. Rice//J. Mech. Phys. Solids, V. 23, No.6. - P. 371-390.

Wilkins M. L. (1999): Computer Simulation of Dynamic Phenomena/M. L. Wilkins. - Berlin-Heidelberg-New York : Springer-Verlag, 246 p.

Stefanov Yu. P. (2004): Numerical investigation of deformation localization and crack formation in elastic brittleplastic materials/Yu. P. Stefanov//Int. J. Fract., V.128 (1), P. 345-352.

Grueschow E. (2005): Elliptic yield cap constitutive modelling for high porosity sandstone/E. Grueschow, J. W. Rudnicki//Int. J. Sol. Struct.,V. 42. - P. 4574-4587.20. Jaeger C. (2009): Rock Mechanics and Engineering/C. Jaeger. - 2nd ed. Cambridge University Press, XII. p.523.


Refbacks

  • There are currently no refbacks.