Indentifying a stimulated reservoir volume from microseismic data

摘要

In some aspects, a closed boundary is computed based on locations of microseismic events associated with a stimulation treatment of a subterranean region. Based on the boundary, a stimulated reservoir volume (SRV) for the stimulation treatment is identified. The boundary encloses a first subset of the locations and a second, different subset of the locations reside outside the boundary.

主权项

1. A method comprising:
computing, by operation of data processing apparatus, a closed boundary based on locations of microseismic events caused by a stimulation treatment of a subterranean region, the boundary enclosing a first subset of the locations, a second, different subset of the locations residing outside the boundary; identifying a stimulated reservoir volume (SRV) for the stimulation treatment by computing a volume of the boundary, the SRV indicating a volume of the subterranean region that was affected by the stimulation treatment to evaluate an efficiency of the stimulation treatment; refining the boundary by filtering out low event density data points of the microseismic events; and identifying an updated SRV of the stimulation treatment by computing a volume of the refined boundary.