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Microearthquake occurred due to hydraulic fracturing during well injection processes in the Malabar complex. The microearthquake monitoring have been done for 44 days and obtained selected 216 events with high to noise ratio signal. We used these data to invert for velocities structure using double-...

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Main Author: NUR RACHMAN (NIM : 223 09 304), ASEP
Format: Theses
Language:Indonesia
Online Access:https://digilib.itb.ac.id/gdl/view/21280
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Institution: Institut Teknologi Bandung
Language: Indonesia
id id-itb.:21280
spelling id-itb.:212802017-10-09T10:24:10Z#TITLE_ALTERNATIVE# NUR RACHMAN (NIM : 223 09 304), ASEP Indonesia Theses INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/21280 Microearthquake occurred due to hydraulic fracturing during well injection processes in the Malabar complex. The microearthquake monitoring have been done for 44 days and obtained selected 216 events with high to noise ratio signal. We used these data to invert for velocities structure using double-difference tomography (TomoDD) method in this study. We improved P-and S-wave arrival times phases by applying waveform cross-correlation method (WCC) as input for TomoDD inversion. For the WCC processes, we selected a master event for each station and then the slave events are alignment. <br /> <br /> <br /> <br /> The tomographic inversion results show low Vp, low Vs, and high Vp/Vs ratio of 1.85 at depth of about 1.5 km close to edge of the well injection that may be associated with water content from the well. The high Vp/Vs value of water content in this region seems to have North-East direction. The relocated hypocenters show more concentrated around the local faults. text
institution Institut Teknologi Bandung
building Institut Teknologi Bandung Library
continent Asia
country Indonesia
Indonesia
content_provider Institut Teknologi Bandung
collection Digital ITB
language Indonesia
description Microearthquake occurred due to hydraulic fracturing during well injection processes in the Malabar complex. The microearthquake monitoring have been done for 44 days and obtained selected 216 events with high to noise ratio signal. We used these data to invert for velocities structure using double-difference tomography (TomoDD) method in this study. We improved P-and S-wave arrival times phases by applying waveform cross-correlation method (WCC) as input for TomoDD inversion. For the WCC processes, we selected a master event for each station and then the slave events are alignment. <br /> <br /> <br /> <br /> The tomographic inversion results show low Vp, low Vs, and high Vp/Vs ratio of 1.85 at depth of about 1.5 km close to edge of the well injection that may be associated with water content from the well. The high Vp/Vs value of water content in this region seems to have North-East direction. The relocated hypocenters show more concentrated around the local faults.
format Theses
author NUR RACHMAN (NIM : 223 09 304), ASEP
spellingShingle NUR RACHMAN (NIM : 223 09 304), ASEP
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author_facet NUR RACHMAN (NIM : 223 09 304), ASEP
author_sort NUR RACHMAN (NIM : 223 09 304), ASEP
title #TITLE_ALTERNATIVE#
title_short #TITLE_ALTERNATIVE#
title_full #TITLE_ALTERNATIVE#
title_fullStr #TITLE_ALTERNATIVE#
title_full_unstemmed #TITLE_ALTERNATIVE#
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url https://digilib.itb.ac.id/gdl/view/21280
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