Method and device for analyzing the CO2 contained in a drilling fluid
US7666679B2 · kind B2 · utility
4Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2004 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Jun 12, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for estimating the quantity of CO2 present in a geologic formation and a device for implementing the method include the steps of penetrating the formation by a well drilled from the surface contacting formation with a fluid that travels from the formation to the surface sampling a given quantity of return fluid at the surface and transferring it to a cell, ensuring the pH of the quantity of fluid, adding a given quantity of product acidifying the fluid to adjust the pH to a value of less than 4, and measuring the CO2 level of the gas in the cell after the acidification step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.