Use of encapsulated tracers
US9290689B2 · kind B2 · utility
12Cited by
52References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2009 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | May 27, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/11
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A process of making observations of a subterranean reservoir penetrated by a wellbore uses distinguishable sets of tracer particles and comprises steps of: The tracer substances are sufficiently distinguishable from each other to enable a tracer substance detected in the produced fluid to identify the set of tracer particles from which it has come and hence identify the location from which it has come. The process may be used in conjunction with hydraulic fracturing, placing sets of particles at different locations within a fracture and/or in different fractures extending from a single wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.