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Abstract

Summary

Microseismic monitoring is a conventional technique used for mapping hydraulic fracturing. Accurate locations of microseismic events are strongly dependent on an accurate velocity model. The velocity model is generally obtained by model calibration from inverting perforation data. In some cases, however, perforations may only illuminate layers between the perforations and receivers. While some of microseismic events may occur outside these layers. To derive the velocity structure covering all of the microseismic events, we add velocity inversion capability into recently developed Cross double-difference (CDD) method, which is a location approach that can provide both relative and absolute event locations by utilizing cross traveltime differences between P and S phases over different events. In order to reduce the trade-off between the event location and velocity model, both perforations and microseismic events are used in a joint inversion. Both synthetic and field data result show that the CDD joint inversion method can provide more reasonable result.

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/content/papers/10.3997/2214-4609.201601482
2016-05-30
2024-04-26

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201601482
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Joint Inversion of Perforations and Microseismic Events
Conference Proceedings 2016, 1 (2016); https://doi.org/10.3997/2214-4609.201601482
/content/papers/10.3997/2214-4609.201601482
/content/papers/10.3997/2214-4609.201601482
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