Dynamic sag monitor for drilling fluids
US6330826A · kind A · utility
31Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 8, 2000 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Feb 8, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and a method are described for measuring the sag properties of a drilling fluid by using a conically or frustro-conically shaped inner body and an outer body having an opening with contours closely matching those of inner body such that in conjunction inner and outer body are separated by a narrow gap defining a conically or frustro-conically volume with a vertex; a motor drive for rotating the inner body with respect to the outer body; and a sampling access to determine the density of said drilling fluid within a localized part of said volume, wherein said sampling is permanently located in vicinity on said vertex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.