In-situ Stress Measurements in Tsukuba Deep Borehole.
نویسندگان
چکیده
منابع مشابه
Effect of borehole stress concentration on compressional wave velocity measurements
Formation elastic properties near a borehole may be altered from their original state due to the stress concentration around the borehole. This could lead to a biased estimation of formation elastic properties measured from sonic logging data. To study the effect of stress concentration around a borehole on sonic logging, we first use an iterative approach, which combines a rock physics model a...
متن کاملتعیین ارزش غذایی برخی از ضایعات کشاورزی با استفاده از روشهای ,in vitro,in situ in vivo
چکیده ندارد.
15 صفحه اولSeismoelectric and Seismomagnetic Measurements in Fractured Borehole
Seismoelectric and seismomagnetic fields generated by acoustic waves in fluid-saturated fractured borehole models are experimentally investigated with an electrode and a Halleffect sensor. In a borehole with a horizontal fracture, the Stoneley and flexural waves induce seismoelectric and seismomagnetic fields on the borehole wall and an electromagnetic wave propagating with light speed at the h...
متن کاملSeismoelectric Laboratory Measurements in a Borehole
The seismoelectric logging method is based on measuring the electric field generated by seismic waves in a fluid-filled borehole. Two kinds of electromagnetic (EM) fields can be generated within the formation and at the interface of formations. One is a stationary or local EM wave and the other is a radiating EM wave. In this paper, we make various fractured borehole models with artificial mate...
متن کاملModeling Borehole Stoneley Wave Propagation across Permeable In-situ Fractures
The characterization of hydraulic transmissivity of permeable fracture reservoirs is a very important task in the exploration of water resources and hydrocarbons. Previous studies that model the permeable structure as a single fluid-filled fracture failed to explain the observed significant Stoneley wave attenuation across the permeable structure. In this paper, the structure is modeled as a pe...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Engineering Geology
سال: 2000
ISSN: 0286-7737,1884-0973
DOI: 10.5110/jjseg.41.41