Method for determining the content of at least one given gas in a drilling mud, associated device and rig
US7392138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2006 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Apr 22, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method includes the phases of measuring the quantity of a given gas in the gases extracted from a calibration sample of a calibration mud, in at least two stages for extraction under predetermined conditions. A family of curves representing the extraction, under the predetermined conditions, of the given gas from the drilling mud, is established on the basis of the measurements carried out. The method also includes the phases of measuring the quantity of given gas in the gases extracted from an analysis sample of the drilling mud in an extraction stage, under the predetermined conditions; and computing the given gas content of the drilling mud on the basis of the measured quantity of given gas and of a curve of the family.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.