Methods and apparatus for measuring hydrogen sulfide in downhole fluids
US10120097B2 · kind B2 · utility
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22References
19Claims
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Key dates
| Filing date | Apr 5, 2016 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Aug 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/127
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining a concentration of hydrogen sulfide in a fluid comprises exposing a sensor to the fluid, the sensor comprising a pair of electrodes defining a gap therebetween and a sensing material bridging the gap between the electrodes, measuring a value of an electrical parameter of the sensor at an applied frequency of greater than about 10 kHz and a voltage of less than about 1.0 volt when the sensor is exposed to the fluid, and determining the concentration of hydrogen sulfide in the fluid based at least in part on the measured value of the electrical parameter. Related apparatuses and methods are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.