Recently proposed peak-frequency method is used to estimate the P-and S-wave quality factors from microseismic events. We use a downhole monitoring dataset of 10 high signal-to-noise ratio microseismic events to calculate P-and S-wave... more
Recently proposed peak-frequency method is used to estimate the P-and S-wave quality factors from microseismic events. We use a downhole monitoring dataset of 10 high signal-to-noise ratio microseismic events to calculate P-and S-wave effective attenuation of a carbonate reservoir. We benchmark these results with the spectral ratio method and obtain mutually consistent results. Additionally we develop and test two techniques of peak frequency determination. We show that the peak frequency method can be successfully used in the estimation of the quality factor and it provides precise measurements of attenuation.
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Summary The results of microseismic monitoring of hydraulic fracture treatments are significantly more valuable when a high-confidence interpretation of results can be done. The most common approach is to look for trends, or directions,... more
Summary The results of microseismic monitoring of hydraulic fracture treatments are significantly more valuable when a high-confidence interpretation of results can be done. The most common approach is to look for trends, or directions, along which microseismic events line up that would indicate the direction of induced fractures. This type of interpretation is more difficult when the signal is low
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Research Interests: Geophysics and North Sea
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The objectives of our program are to evaluate the cost and effectiveness of the AH-64 (Apache) and UH-60 (Blackhawk) helicopters' on-board vibration monitoring (VM) system, to provide an annual cost savings analysis of the vibration... more
The objectives of our program are to evaluate the cost and effectiveness of the AH-64 (Apache) and UH-60 (Blackhawk) helicopters' on-board vibration monitoring (VM) system, to provide an annual cost savings analysis of the vibration management enhancement program (VMEP) for the AH-64 and UH-60 aircraft fleets, and to initially correlate vibration signals with the ULLS-A (logistics) database to create a
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Hydraulic fracturing is a common tool to increase the productivity of hydrocarbon reservoirs, which suffer of decreasing hydrocarbon pressure and permeability of gas/oil-bearing sediments. We analyzed a microseismic data set from... more
Hydraulic fracturing is a common tool to increase the productivity of hydrocarbon reservoirs, which suffer of decreasing hydrocarbon pressure and permeability of gas/oil-bearing sediments. We analyzed a microseismic data set from hydraulic fracture stimulation of the gas field in West Texas. The data were recorded by an array of 8 three-component geophones deployed in a nearby vertical borehole. We used
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Page 1. Noise suppression for detection and location of microseismic events using a matched filter Leo Eisner*, David Abbott, William B. Barker, James Lakings and Michael P. Thornton, Microseismic Inc. Summary Detection ...
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... monitoring geophones' orientation is determined from back-azimuths of P waves generated by the ... Borehole Deviation Surveys Are Necessary for Hydraulic Fracture Monitoring P. Bulant, Charles U.; L ... 40o for measured depths... more
... monitoring geophones' orientation is determined from back-azimuths of P waves generated by the ... Borehole Deviation Surveys Are Necessary for Hydraulic Fracture Monitoring P. Bulant, Charles U.; L ... 40o for measured depths below 5000 ft and a well-head separation of less ...
Abstract A matched filter technique that uses cross-correlation and migration of the recorded waveforms has been successfully used to relatively locate microseismic events. In addition to producing consistent relative locations, the... more
Abstract A matched filter technique that uses cross-correlation and migration of the recorded waveforms has been successfully used to relatively locate microseismic events. In addition to producing consistent relative locations, the matched filter corrects for radiation pattern ...
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Research Interests: Algorithms, Hydraulics, Principal Component Analysis, Fracture, Localization, and 23 moreStress field, Multidisciplinary, Oil Industry, Growth, Models, Depth, Maximum Likelihood, Direction, Space Time, Sediments, Sediment, Fluid flow, Infiltration, Time Dependent, Shale, Geophysical, High Density Concrete, Two Dimensions, Sedimentary Rocks, Location Problem, Physical Properties, Fracture Propagation, and Amplitude
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