Use of perforation shot S wave attenuation to constrain locations of hydraulic fractures in the Marcellus Shale

Yunhui Tan, Chengping Chai, Terry Engelder

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Water filled open fractures created by hydraulic fracturing will severely attenuate S waves. By comparing with the P and S wave amplitude generated by perforation shots in the Marcellus Shale, we are able to infer the existence and constrain the location of stimulated and probably propped hydraulic fractures. The waveform of the perforation shots in unstimulated virgin shale was first analyzed to check the radiation pattern. Then we present two cases in which the change of perforation shot S wave waveform reveals information about the hydraulic fractures. In case 1 we used S wave attenuation to validate the existence of an off stage hydraulic fracture. In case 2 we show an example of invasion of frack fluid from another neighbor stage identified from S wave attenuation. This method can be potentially used to design cross well survey to better monitor the hydraulic fracturing results.

Original languageEnglish
Title of host publicationSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014
PublisherSociety of Exploration Geophysicists
Pages132-137
Number of pages6
ISBN (Print)9781634394857
DOIs
StatePublished - 2014
Externally publishedYes
EventSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014 - Denver, United States
Duration: Oct 26 2014Oct 31 2014

Publication series

NameSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014

Conference

ConferenceSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014
Country/TerritoryUnited States
CityDenver
Period10/26/1410/31/14

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