☆ 4.6 Article

Mechanical model for geomechanical pumped storage in horizontal fluid-filled lenses

INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS (2023)

Multiscale tip asymptotics for a deflating hydraulic fracture with leak-off

Anthony Peirce et al.

Summary: This paper discusses the construction of tip asymptotes for a hydraulic fracture in a permeable elastic medium. It describes the changing nature of the asymptotic fields during the arrest and recession phases of the fracture after fluid injection has ended. The paper shows that as the fracture deflates, the dominance of the linear elastic fracture mechanics tip asymptote shrinks, giving way to an intermediate asymptote. The front velocity affects the development of a linear asymptote at the fracture tip, with the intermediate asymptote reappearing. These universal multiscale asymptotes are crucial for determining the decaying stress intensity factor, transition from arrest to recession, and front velocity during recession using computational algorithms.

JOURNAL OF FLUID MECHANICS (2022)

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Article Materials Science, Multidisciplinary

The arrest and recession dynamics of a deflating radial hydraulic fracture in a elastic medium

Anthony Peirce

Summary: In this paper, the post injection deflation dynamics of a radially symmetric hydraulic fracture in a permeable elastic medium are described. The study focuses on the arrest and recession phases of the deflation process, and investigates the characteristic power laws for various parameters. The research findings are important for understanding the dynamic behavior of hydraulic fractures and optimizing engineering designs.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2022)

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Article Mechanics