1887

Abstract

Summary

A Fayetteville shale stimulation concurrently monitored using a surface seismic array and a wide aperture downhole array is analysed in order to develop a better understanding of the factors influencing the surface expression of perforation shots using a combination of data processing and forward modelling. The perforation shots typically give rise to multiple compressional and shear wave arrivals. A comparison of observed and modelled arrivals reveals the importance of two geological parameters: a 1.6 degree subsurface dip, which had been neglected in previous studies, and a strong Thomsen anisotropy in the Fayetteville shale, typically between 40% and 50%. Of equal importance are shot generated waves (tube waves) travelling through the treatment well which interact with plugs remaining in the well and give rise to secondary high amplitude, low frequency, seismic events. These arrivals, which are related to source, propagation and treatment operation effects, need careful separation and interpretation in order to allow the reliable derivation of velocity models for surface microseismic monitoring.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201413016
2015-06-01
2020-07-15
Loading full text...

Full text loading...

References

  1. Drew, J., Leslie, D., Armstrong, P. and Michaud, G.
    [2005] Automated microseismic event detection and location by continuous spatial mapping. Paper 95513, SPE Annual Technical Conference and Exhibition, Dallas, Texas, USA, 9–12October.
    [Google Scholar]
  2. Peyret, O., Drew, J., Mack, M., Brook, K, Maxwell, S. and Cipolla, C.
    [2012] Subsurface to surface microseismic monitoring for hydraulic fracturing. Paper 159670, SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, 8–10October.
    [Google Scholar]
  3. Probert, T., Raymer, D, and Bradford, I.
    [2013] Comparing Near-Surface and Deep-Well Microseismic Data and Methods for Hydraulic Fracture Monitoring. EAGE Fourth Passive Seismics Workshop, Amsterdam, Netherlands, March17–20.
    [Google Scholar]
  4. Van Renterghem, C.
    [2014] Factors influencing the surface expressions of perforation shots. MSc thesis, Eidgenössische Technische Hochschule (ETH), Zürich, Switzerland.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201413016
Loading
/content/papers/10.3997/2214-4609.201413016
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error