Methods and compositions for treating subterranean formations with swellable lost circulation materials
US9284798B2 · kind B2 · utility
43Cited by
37References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2013 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Feb 19, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods of treating a fluid loss zone in a wellbore in a subterranean formation including providing swellable particles having an initial unswelled volume, wherein the swellable particles upon swelling adopt a specific shape; introducing the swellable particles into the wellbore in the subterranean formation; and swelling the swellable particles so as to adopt a swelled volume beyond the initial unswelled volume; and sealing at least a portion of the fluid loss zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.