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Seismic anisotropy of shale: Inversion of microseismic data
SEG Technical Program Expanded Abstracts 2014, 2014Microseismic data recorded in downhole arrays promise a potential way of estimating in situ shale anisotropy, which can be used to verify and calibrate the results of laboratory experiments on shale anisotropy. Reversely, rock physics studies can provide constraints when estimating and interpreting seismic anisotropy of shale in microseismic dataset ...
Changpeng Yu*, Serge Shapiro
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Inversion of microseismic data for triclinic velocity models
Geophysical Prospecting, 2013ABSTRACTModern 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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Microseismic data from Aquistore (Canada).
2016This 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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Survey Design and Microseismic Data Acquisition
2020This 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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Additional Topics in Microseismic Data Processing
2020We 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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Complexities in the quick analysis and interpretation of microseismic data
SEG Technical Program Expanded Abstracts 2007, 2007Given that all points in the display are computed in the same way, the point location estimates likely all suffer in the same way from any bias. This can lead to a plot where the statistical distribution of points is misrepresentative of knowledge of the locations, and open to misinterpretation.
Julian Drew, Joel Le Calvez
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Locating microseismic events using borehole data
Geophysical Prospecting, 2013ABSTRACTConstraining microseismic hypocentres in and around hydrocarbon reservoirs and their overburdens is essential for the monitoring of deformation related to hydraulic fracturing, production and injection and the assessment of reservoir security for CO2 and wastewater storage. Microseismic monitoring in hydrocarbon reservoirs can be achieved via a
Jones, G. A. +3 more
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An integrated processing tool for microseismic data analysis
SEG Technical Program Expanded Abstracts 2014, 2014Summary By this work, a new approach is proposed for the solution of the microseismic event detection problem, as well as the accurate estimation of P- and S- arrival times. This technique consists of an event detection algorithm based on the polarization attributes of the seismic signal on the timefrequency domain, further analysis on the detection ...
Athanasios Lois +5 more
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Shear wave arrivals in surface microseismic data
SEG Technical Program Expanded Abstracts 2012, 2012There 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 +2 more
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Signal enhancement in microseismic data: Application to a field data set
SEG Technical Program Expanded Abstracts 2013, 2013We implement a technique to suppress surface-wave noise in microseismic data based upon the distinct characteristics that microseismic signals and noise display in the τ − p domain. In order to determine an estimated orientation that best accounts for the polarity pattern of any microseismic events with double-couple source mechanisms, we employ a ...
Farnoush Forghani-Arani +4 more
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