Fully coupled numerical simulation techniques for 3D hydraulic fracturing

Borisov, V. T.; Иванов, А. В.; Kritskiy, Boris Viktorovich; Men’shov, Igor; Рамазанов, М. М.; Савенков, Е. Б.

doi:10.1088/1742-6596/1141/1/012085

Cited by 2 publications

(2 citation statements)

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“…The authors conducted a three-dimensional geomechanical simulation of the stress distribution in the model sample stresses with all the boundary conditions determined from the experimental data. As a result, the correct stress-strain state, specifically the principle minimum stress acting on the sample [5], was determined. The authors simulated the sample itself and the lower disk of the installation in the simulator (Figure 1).…”

Section: Laboratory Experiments On Hydraulic Fracturingmentioning

confidence: 99%

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Backstress Influence on the Formation Stress Field in Hydraulic Fracturing Experiments

et al. 2023

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This work presents an analysis of data obtained through unique laboratory experiments on hydraulic fracturing. In the experiments, sufficiently large artificial samples were used to model a reservoir. Thus, it was possible to simulate several wells simultaneously, given that hydraulic fracture was initiated in one of them. In addition, the setup construction provided a true triaxial stress–strain state. The setup allowed us to investigate parameters that are difficult to access in real conditions. The data processing based on six laboratory experiments on hydraulic fracturing showed discrepancies between the values of the minimum stresses calculated from the fracture closure pressure and the actual values known based on the experimental conditions. There was also a discrepancy between the theoretical values of the fracture breakdown pressure and those obtained through the experiments. This paper examines phenomena such as backstress as the main reasons for this discrepancy. Backstress is stress acting on the walls of a fracture or well and is caused by the filtered hydraulic fracturing fluid. The authors demonstrated that by taking into account this phenomenon, one can significantly reduce the differences between calculated and experimental values. Therefore, the authors call for the careful use of the standard theory when determining the stress state in real fields.

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Section: Laboratory Experiments On Hydraulic Fracturingmentioning

confidence: 99%

“…Numerous papers describe studies of hydraulic fracture propagation using both of the earliest two-dimensional models [1][2][3][4], which are still popular, and three-dimensional models [5][6][7][8]. Fracture initiation and propagation are influenced by stress distribution in the reservoir under development [9][10][11].…”

Section: Introductionmentioning

confidence: 99%