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- W133634848 abstract "Fluid-driven fractures, both natural and man-made, occur in a variety of contexts in the earth's crust: (i) in connection with the transport of magma and the formation of intrusive dykes and sills, (ii) in geothermal energy extraction (iii) in explosive volcanism, (iv) in hydraulically induced fracture as a mechanism for enhanced recovery of hydrocarbons; (v) hydrofracture is also a feasible mechanism in the deposition of economic ore deposits. In the lecture theoretical attempts to model the propagation of a crack filled with viscous fluid and surrounded by deformable host rock will be described, the fluid being driven either by buoyancy forces as in (i), (ii) and (iii) above, or by an externally supplied pressure as in (iv) and (v). These begin with the work of Barenblatt [20] and Weertman [5]. They give rise to complex fluid-elastic problems, which must be treated simultaneously. Similarity solutions exist for certain hydrofracture problems, and reference will be made to recent work on time-dependent solutions for unsteady magma transport. Theoretical treatments are aimed at gaining fundamental understanding, and make use of simplifying assumptions, usually treating the host rock as elastic and the fluid viscosity as constant. These, and phenomena such as “leak-off” and solidification, will be discussed." @default.
- W133634848 created "2016-06-24" @default.
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- W133634848 date "1989-01-01" @default.
- W133634848 modified "2023-09-27" @default.
- W133634848 title "FLUID-DRIVEN FRACTURES" @default.
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- W133634848 doi "https://doi.org/10.1016/b978-0-444-87302-6.50025-9" @default.
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