Method for determining aggregate fracture properties for evaluation of fracture procedures
US9897711B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2014 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Aug 12, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for imaging microseismic events includes determining a hypocenter of microseismic events generated by at least one stage of a hydraulic fracturing procedure from recorded signals detected by seismic sensors disposed above a wellbore in the subsurface. Spatial position of the microseismic events occurring sequentially in the fracturing procedure is determined with reference to a center of fracturing procedure. Each microseismic event is assigned to one of a plurality of selected size bins defined positionally with reference to the center of the fracturing procedure. A property of each microseismic event assigned to each bin is aggregated and an image of the aggregated property is generated with respect to position referenced to the center of the fracturing procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.