Results 171 to 180 of about 9,177 (222)

Shear wave arrivals in surface microseismic data

SEG Technical Program Expanded Abstracts 2012, 2012
There is a common misconception in microseismic monitoring that shear arrivals are more difficult to detect at the surface than compressional arrivals. This is despite the fact that, for common fracture types, the energy released in the form of shear waves is greater than compressional energy. To reconcile such claims, it has been assumed that the near
Ben Witten, Summer Montgomery, Brad Artman   +2 more
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Survey Design and Microseismic Data Acquisition

2020
This chapter explains the common objectives and planning aspects of a microseismic survey. We will see how the information gathered from the available and already completed projects can be useful in the pre-survey design modeling. Moreover, we will discuss the role of full-waveform modeling and ray tracing tools in the evaluation of event detectability
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4D Tomography and Deformation from Microseismic Data

SEG Technical Program Expanded Abstracts 2015, 2015
Microseismic data are used to calculate seismic deformation in response to hydraulic fracturing throughout a reservoir. This information is incorporated into a 4D tomography code that calculates changes in seismic velocity over the volume of the reservoir and as a function of time as deformation progresses.
J.W. Crowley, A.M. Baig, T.I. Urbancic, E. von Lunen   +3 more
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Microseismic data from Aquistore (Canada).

2016
This data set includes microseismic and structural geological data collected at Aquistore (Canada). They cover a period from 26th April - 21st June 2015, during which CO2 was being injected in the Aquistore injection well at 3.5 km depth. The data were collected in the framework of a research project funded by UKCCSRC (EPSRC) and based at Aquistore in ...
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Detection for Anomaly Data in Microseismic Survey

2009 Third International Symposium on Intelligent Information Technology Application, 2009
With the development and application of modern science and technology, many new technical measurement methods have been put forward successively which are of high resolution and high collection rate about microseismic monitoring. We urgently need an effective detection method of abnormal data (mine earthquake) to collect lots of data to make real-time ...
Ji Chang-peng, Liu Li-li
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Imaging hydraulic fracture zones from surface passive microseismic data

First Break, 2007
Vladimir A. Kochnev, Ilya V. Goz, Vitaly S. Polyakov, Issa S. Murtayev, Vladimir G. Savin, Boris K. Zommer, and Ilya V. Bryksin provide some Russian examples of passive microseismic applications for imaging hydraulic fracture zones. Most of the current microseismic methods for hydraulic fracture imaging employ multi-level receiver systems deployed on a
V.A. Kochnev, V.S. Polyakov, I.V. Goz, I.S. Murtayev, V.G. Savin, B.K. Zommer, I.V. Bryksin   +6 more
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What can microseismic data say about fluid flow?

The Leading Edge, 2015
A special session was held at the 2014 Society of Exploration Geophysicists (SEG) Annual Meeting in Denver to brainstorm on the topic of what microseismic data can say about fluid flow. The special session was sponsored by the Research Committee of SEG and coorganized by Oleg Poliannikov (Massachusetts Institute of Technology) and Hugues Djikpesse ...
Oleg V. Poliannikov, Hugues Djikpesse
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Additional Topics in Microseismic Data Processing

2020
We discuss several advanced topics in microseismic data processing, including the estimation of receiver orientation in deviated wells, velocity model calibration in VTI media, simultaneous inversion for velocities and hypocenters, moment tensor inversion and uncertainty analysis.
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Inversion of microseismic data for triclinic velocity models

Geophysical Prospecting, 2013
ABSTRACTModern downhole microseismic surveys often employ geometries in which ray trajectories generated by a collection of locatable events provide full polar and azimuthal coverage, making it possible to estimate the in situ seismic anisotropy. We show that traveltimes and particle motions of the direct P‐ and shear‐waves acquired in such geometries ...
Vladimir Grechka, Sergey Yaskevich
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Toward an Optimized Data Conditioning for Surface-acquired Microseismic Data

78th EAGE Conference and Exhibition 2016, 2016
Noise attenuation is a key challenge for surface-acquired microseismic processing. A number of data conditioning tools have been proposed and applied with various degrees of success to improve the signal-to-noise ratio prior to detection and location of microseismic events.
A. Gendrin, A. Özbek, T. Probert, I. Bradford, J. Le Calvez   +4 more
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