Apparatus and method for treating a subterranean formation using diversion
US8286705B2 · kind B2 · utility
9Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2009 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/057
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus and methods comprising a plurality of particles which are magnetically attracted to one another in response to exposure to an magnetic field, and which maintain attraction to one another after removal of the magnetic field, the attraction being disabled when the particles are demagnetized, whereby the particles operate to alter the rheological properties of a fluid in which the particles are mixed when the attraction is enabled or disabled is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.