Evaluation of the irreversible dimensions of radial-circular cracks opened in rock subjected to hydraulic fracturing

Autor: A. V. Mikhalyuk, A. A. Vovk, A. F. Beloivan, Yu. I. Voitenko
Rok vydání: 1985
Předmět:
Zdroj: Strength of Materials. 17:829-835
ISSN: 1573-9325
0039-2316
Popis: The authors propose a method to determine the parameters of radial-circular cracks on the basis of analysis of the interaction between a viscoelastic fluid and an elastobrittle rock under impulse-injection conditions. They examine the horizontal fracture of rock at a depth characteristic for geotechnological wells, where the effect of structural nonuniformities of the rock is insignificant, owing to the presence of a field of compressive stresses, and an initial crack of the required dimensions which initiates the failure is created by familiar technical methods. The viscous flow of fluid in the crack is a basic factor that slows crack development in the absence of vigorous seepage of fluid. In the case of hydraulic fracturing with a fluid having a high viscosity with other conditions equal, the authors expect that the radius of the crack will be smaller than that during fracturing with a low-viscosity fluid.
Databáze: OpenAIRE
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