Method and tool for determination of fracture geometry in subterranean formations based on in-situ neutron activation analysis
US7933718B2 · kind B2 · utility
20Cited by
25References
20Claims
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Key dates
| Filing date | Nov 11, 2008 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Sep 29, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for determining fracture geometry of a subterranean formation from radiation emitted from a fracture in the formation, including measuring gamma-radiation emitted from the fracture; subtracting background radiation from the measured gamma-radiation to obtain a peak-energy measurement; comparing the peak-energy measurement with a gamma-ray transport/spectrometer response model; and determining formation fracture geometry of the fracture in accordance with values associated with the response model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.