Single-well moment tensor inversion of tensile microseismic events
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F16%3A00463429" target="_blank" >RIV/67985530:_____/16:00463429 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1190/geo2016-0186.1" target="_blank" >http://dx.doi.org/10.1190/geo2016-0186.1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1190/geo2016-0186.1" target="_blank" >10.1190/geo2016-0186.1</a>
Alternative languages
Result language
angličtina
Original language name
Single-well moment tensor inversion of tensile microseismic events
Original language description
Microseismic data acquired in a single observation well parallel to the axis of rotational symmetry of surrounding rocks - typically, in a vertical well drilled through a horizontally layered isotropic or vertically transversely isotropic formation - cannot be uniquely inverted for six independent components comprising the full seismic moment tensor. To constrain the inversion for such a survey geometry and medium symmetry, one might assume certain physical properties of seismic sources, the properties relating otherwise independent moment components to each other, regularizing moment tensor inversion, and helping reduce its ambiguity. Our paper examines one possibility of this kind: the assumption of a tensile fracture, rupturing the focal region along a plane of its greatest weakness. Mathematical formulation of inversion of single-well microseismic records for the parameters of tensile fractures reveals that the true solution, always recoverable from properly acquired data, might be accompanied by two spurious solutions. The analysis of those solutions leads to a criterion that, although not perfect, makes it possible to select the correct solution for the majority of elastic models. After being tested on synthetic, our methodology is applied to a field data set recorded with multiple vertical downhole arrays, demonstrating that the results of dual-well moment tensor inversion can be replicated with single-well data.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DC - Seismology, volcanology and Earth structure
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geophysics
ISSN
0016-8033
e-ISSN
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Volume of the periodical
81
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
"KS219"-"KS229"
UT code for WoS article
000392926400067
EID of the result in the Scopus database
2-s2.0-84997328029