Methods for recovery and reuse of lost circulation material
US7568535B2 · kind B2 · utility
14Cited by
53References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2007 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Dec 11, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/063
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for recovering lost circulation material from spent drilling fluid, the spent drilling fluid containing lost circulation material, drilling fluid, and undesirable solids, the system having alternating separation apparatuses, including sizing apparatus, destiny/shear separation apparatus, and sizing apparatus; and methods for using such a system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.