Oil based drilling mud filtrate contamination monitoring using gas to oil ratio
US9606260B2 · kind B2 · utility
3Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2013 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Dec 28, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/088
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for monitoring oil based mud filtrate contamination is provided including steps of analytically dividing a fluid stream into two parts, determining a gas/oil ratio for a native fluid determining an apparent gas/oil ratio for the contaminated fluid and determining on a volume fraction, an oil based contamination level based upon the gas/oil ratio for the native fluid and the apparent gas/oil ratio for the contaminated fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.