Tagged propping agents and related methods
US7921910B2 · kind B2 · utility
30Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2005 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Nov 23, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/11
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A proppant composition comprises a non-radioactive, detectable tracer at least partially embedded in a ceramic composition. The composition may be prepared by agglomerating granules of the ceramic material and granules of the non-radioactive, detectable material to produce the particle by compression. Backflow of proppants in a fractured subterranean formation into which a plurality of particles of the proppant composition have been introduced may be tracked by analyzing a sample of the backflow by detecting for presence of the tracer in the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.