Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids
US7758734B2 · kind B2 · utility
10Cited by
12References
33Claims
0Family size
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Key dates
| Filing date | May 28, 2003 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Jun 16, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/184
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrochemical sensor for measuring the amount of hydrogen sulphide or thiols in a fluid in a wellbore comprises a temperature- and pressure-resistant housing containing a flow path for the fluids. The fluids flow over one side of a gas permeable membrane made of zeolite or a suitable ceramic material, the other side of the membrane being exposed to a chamber containing a reaction solution which together with the hydrogen sulphide or thiols create a redox reaction resulting in an electrical current dependent upon the amount of hydrogen sulphide or thiols in the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.