Acoustic and Seismic Emission in Hydraulic Fracturing of Cement Block under Loading
S. V. Serdyukov, L. A. Rybalkin, A. N. Drobchik, V. I. Vostrikov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Rock mass, underground opening, stress state, hydraulic fracturing, physical modeling, laboratory experiment, acoustic and seismic emission, power fluid pressure, measurement equipment
Abstract
The article describes the lab-scale testing data on acoustic and seismic emission generated in hydraulic fracturing of a cement block under volumetric loading by nonequal stresses. The connection of the acoustic and seismic emission with the rate of injection of power fluid and the change in the fluid pressure in the course of the fracture initiation, growth and arrest is demonstrated. The authors recommend on improvement of receiving equipment and on using the research findings in the hydraulic fracturing control.
|
