Journal issues: 2/2013

Pages: 168-183

Language: (RU)

1 March, 2013

## Simulation of the network of cracks

This article discusses the results of computational experiments carried out in the hydrodynamic simulation HydraSym conditions for modeling the process of man-made fracturing caused by the work of the water injection system. The main object of study in this work is the formation BK1-3 Em-Egovskoye license area Krasnoleninskoye oil and gas field. To assess the reliability of the previously proposed models must first be ascertained according to their qualitative physics and the nature of the process. The primary tool for assessing the quality characteristics of the hydrodynamic model (GDM) with the crack appears computational experiment. The results of computational experiments contradict or conflict with the nature of the process, and may also reveal some of the new aspects of the behavior of the object. Thus, the brewing important conclusion that the high pressure injection and excess pressure gradients over all components of the vector-burst-pressure gradient is necessary and sufficient for an infinitely long crack development. It is connected with both the filtration pressure loss in the cracks and aligned distribution reservoir pressure with increasing distance from the discharge zone. The need to study this process is dictated by the fact that the need to clarify the nature of the profile of crack propagation through the thickness of the reservoir. As you know the results of simulation in the foreign simulator (FracSim etc.) fracture, the size (length) of cracks reduced to near impenetrable borders: the roof, floor and clay interlayers

- Patent owner A.V. Strekalov Certificate of ROSPATENT number 2002611864 for registration of a computer program. The complex is a universal model of technical hydraulic pressure maintenance Hydraulic Symuiator (Hydra'Sym) laboratory software development SunEXe. M. 2002. 1 p. [in Russia]
- Strekalov Mathematical models of hydraulic systems for management systems to maintain reservoir pressure. Tyumen: OJSK «Tyumen house printing», 2007. 664 p. [in Russia]
- S.K.Grachev, A.V. Strekalov, K.V. Yaroslavtsev, Theoretical basis of hydrodynamic finite element model in education inor-orthogonal cracks. M.: "Oil and Gas", 2012.V.2. P. 65-70. [in Russia]
- D.K. Faddeev, V.P. Kublanovskaya, V.N. Fadtseeva Solution of linear systems with rectangular matrices. Proceedings of the Steklov Institute of Mathematics. L: "Science", 1968, vol 96, p. 76-92. [in Russia]
- N.M. Zykov Introduction to systems and system analysis. Tyumen: OJSC "Tyumen Printing House", 2000, 385 p. [in Russia]
- K.E. Morozov Mathematical modeling in scientific knowledge. M.: "Thought", 1969, 212 p. [in Russia]
- O.V. Bradulina, E.S. Zakirov, T.M. Mamedov The probing depth in anisotropic reservoirs in order to build a 3D model of the formation. The first international teach Conf. oil recovery. 2003. May 19-23, 2003, Moscow Gubkin Russian State University of Oil and Gas. M.: Publishing House "Oil and Gas", 2003. V.3., p. 40-45 [in Russia]
- P.S.Ringrose, G.E. Pickup, J.L. Jensen and K.S. Sorbie The use of correlation statistics for modelling petroleum reservoirs. 3rd European Conference on the Mathematics of Oil Recovery, 17-19 June, 1992, University of Delft, Netherlands, p. 15-23

filtration capacity properties(FCP); hydraulic fracturing; hydrodynamic modeling; the fracture network; гидродинамическое моделирование; гидроразрыв; сети трещин; фильтрационно-емкостные свойства (ФЕС) References to this article (GOST) S.K. Gracheva, A.V. Strekalov, A.T. Khusainov. Simulation of the network of cracks // Electronic scientific journal "Oil and Gas Business". 2013. №2. P.168-183. URL: http://ogbus.ru/authors/GrachevaSK/GrachevaSK_1.pdf