Results 171 to 180 of about 7,682 (206)

Excavation-induced microseismicity: microseismic monitoring and numerical simulation

Journal of Zhejiang University SCIENCE A, 2012
The volume of influence of excavation at the right bank slope of Dagangshan Hydropower Station, southwest China, is essentially determined from microseismic monitoring, numerical modeling and conventional measurements as well as in situ observations. Microseismic monitoring is a new application technique for investigating microcrackings in rock slopes.
Nu-wen Xu, Chun-an Tang, Hong Li, Feng Dai, Ke Ma, Jing-dong Shao, Ji-chang Wu   +6 more
openaire   +1 more source

Challenges for microseismic monitoring

SEG Technical Program Expanded Abstracts 2011, 2011
We review important challenges in microseismic monitoring and interpretation of the microseismic events. We start with locations of microseismic events and the impact of temporal changes in velocity during hydraulic fracturing and consider effects of uncertainty in deviation surveys on both downhole and surface monitoring.
Leo Eisner, Michael Thornton, Jessica Griffin   +2 more
openaire   +1 more source

Ambiguity in microseismic monitoring

SEG Technical Program Expanded Abstracts 2011, 2011
Microseismic monitoring is synonymous with shale gas development in North America: experience with shale plays suggests a high degree of variability in rock properties, subsequent completion effectiveness, and ultimately gas production and EUR. There are several modes of acquisition currently in use to obtain microseismic information which is related ...
Rodney Johnston, Jeff Shrallow
openaire   +1 more source

Microseismic Deformation Rate Monitoring

Proceedings, 2009
Microseismic monitoring of hydraulic fractures is an important tool for imaging fracture networks and optimizing the reservoir engineering of the stimulation. The range of magnitudes of the recorded microseisms depends at the lower limit on the array sensitivity; while the upper limit varies significantly from site to site.
D. Kuehn, H.N. Gharti, V. Oye, M. Roth
openaire   +1 more source

Microseismic Deformation Rate Monitoring

SPE Annual Technical Conference and Exhibition, 2008
Abstract Microseismic monitoring of hydraulic fractures is an important tool for imaging fracture networks and optimizing the reservoir engineering of the stimulation. The range of magnitudes of the recorded microseisms depends at the lower limit on the array sensitivity; while the upper limit varies significantly from site to site.
S. C. Maxwell, J. Shemeta, E. Campbell, D. Quirk   +3 more
openaire   +1 more source

Microseismic Monitoring of CO2 Storage

Proceedings, 2012
Geomechanical deformation, if it creates and/or reactivates faults and fractures, can provide a leakage pathway for CO2 to escape the reservoir. By monitoring microseismicity in and around the reservoir, the risks of leakage can be assessed. Although it is a mature technology for monitoring hydraulic fracturing in tight gas reservoirs, microseismic ...
Verdon, J., Kendall, J M, Stork, A.
openaire   +1 more source

Efficient mine microseismic monitoring

International Journal of Coal Geology, 2005
Abstract During the past 20 years, the microseismic technique has grown from a pure research means for rockburst study to a basic industrial tool for daily safety monitoring at rockburst-prone mines. This article examines the important issues for efficient mine microseismic monitoring programs.
openaire   +1 more source

Microseismic Monitoring with FracStar® Array

Proceedings, 2014
In this paper the results of monitor the hydraulic fracture stimulation employing surface microseismic monitoring and using different processing software have shown. Analysis of microseismic activity provides engineering information about azimuth and dimensions of the hydraulic fracture fairway.
V.G. Belyaev, M. Stollenwerk, N.A. Zavyalov, M.I. Kukolev   +3 more
openaire   +1 more source

Uncertainty in surface microseismic monitoring

SEG Technical Program Expanded Abstracts 2011, 2011
SUMMARY Uncertainty in a migration based approach to surface and near surface microseismic monitoring occurs in two ways: uncertainty in the validity of detected events and uncertainty in the estimated position of the event. Synthetic modelling and comparison to case studies show that sign-to-noise-ratio is a key indicator of both types of the ...
Michael Thornton, Leo Eisner
openaire   +1 more source

Anisotropy Effects in Microseismic Monitoring

SPE Annual Technical Conference and Exhibition, 2009
Abstract The accuracy of microseismic monitoring is highly dependent on the quality of the velocity structure used in the analysis of the arrival time or waveform data. Because most rocks associated with hydrocarbon reservoirs are generally anisotropic, methods must be developed to circumvent the effects of anisotropy or to determine the
N. R. Warpinski, C. K. Waltman, J. Du, Q. Ma   +3 more
openaire   +1 more source