Estimating the crust permeability from fluid-injection-induced seismic emission at the KTB site
Estimating the crust permeability from fluid-injection-induced seismic emission at the KTB site
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DOI：
10.1111/j.1365-246x.1997.tb01215.x
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发表时间：
1997-11-01
影响因子：
2.8
通讯作者：
Borm, G
中科院分区：
文献类型：
--
作者：
Shapiro, SA;Huenges, E;Borm, G
During the hydraulic-fracturing experiment in the German Continental Deep Drilling Borehole (KTB) in December 1994, microseismic activity was induced. Here we develop a technique for estimating permeability using the spatio-temporal distribution of the fluid-injection-induced seismic emission. The values we have obtained for the KTB experiment (0.25x10(-16) to 1.0x10(-16) m(2)) are in a very good agreement with the previous hydraulic-type permeability estimates from KTB deep-observatory studies. In addition, our estimates of the hydraulic diffusivity support the previously calculated value for the upper crust, which is of the order of 1 m(2) s(-1). However, this estimate now relates to the depth range 7.5-9 km.
