Advanced Search
DSpace@MIT

Downhole microseismic monitoring of hydraulic fracturing: a full-waveform approach for complete moment tensor inversion and stress estimation

Research and Teaching Output of the MIT Community

Show simple item record

dc.contributor.author Song, Fuxian
dc.contributor.author Toksoz, M. Nafi
dc.contributor.author Li, Junlun
dc.contributor.other Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.date.accessioned 2012-01-13T19:52:01Z
dc.date.available 2012-01-13T19:52:01Z
dc.date.issued 2010
dc.identifier.uri http://hdl.handle.net/1721.1/68581
dc.description.abstract Downhole microseismics has gained in popularity in recent years as a way to characterize hydraulic fracturing sources and to estimate in-situ stress state. Conventional approaches only utilize part of the information contained in the microseismic waveforms such as the P/S amplitude ratio and/or P first motion polarity to determine the microearthquake focal mechanisms and infer stress state. Thus, additional con-straints like double-couple assumption must be made to stabilize the inversion for conventional methods. The situation becomes even worse for downhole monitoring where only limited azimuthal coverage is available. In this study, we have developed a full-waveform based approach to invert for complete moment tensor. We use the discrete wavenumber integration approach as the fast forward modeling tool to calculate the synthetic waveforms for one-dimensional layered velocity models. By matching full three-component waveforms across the array, a stable moment tensor solution can be obtained without imposing additional constraints. We also derive the source radius from the far-field displacement spectrum with the Madariaga’s model and determine the stress drop afterwards. We test our method on a downhole microseismic dataset from hydraulic fracturing treatments in East Texas. The result indicates the existence of the isotropic component in some events. A clear difference is observed that non-double-couple events tend to have smaller stress drops, which is consistent with other studies. The derived fracture plane direction also agrees with that derived from multiple event location. en_US
dc.description.sponsorship Halliburton Company (Pinnacle) en_US
dc.description.sponsorship Song, Fuxian; Toksoz, M. Nafi; Li, Junlun en_US
dc.publisher Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.relation.ispartofseries Earth Resources Laboratory Industry Consortia Annual Report;2010-06
dc.subject Microseismic
dc.subject Inversion
dc.title Downhole microseismic monitoring of hydraulic fracturing: a full-waveform approach for complete moment tensor inversion and stress estimation en_US
dc.type Technical Report en_US
dc.contributor.mitauthor Song, Fuxian
dc.contributor.mitauthor Toksoz, M. Nafi
dc.contributor.mitauthor Li, Junlun


Files in this item

Name Size Format Description
paper6_Song_hydro ... 244.5Kb PDF

This item appears in the following Collection(s)

Show simple item record

MIT-Mirage