Methods and apparatus to estimate fluid component volumes
US8813554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2011 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Sep 11, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/081
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods of and apparatus to estimate one or more volumes of one or more components of a fluid in a sample chamber of a downhole tool are described. An example method includes obtaining a sample chamber volume measurement, a flowline volume measurement and a supplemental volume measurement. The example method includes drawing the fluid into the sample chamber until the sample chamber is substantially full and measuring a characteristic of the fluid in the sample chamber at a first time to obtain a first characteristic measurement. The example method also includes adding a supplemental volume corresponding to the supplemental volume measurement to over-pressurize the sample chamber after measuring the characteristic at the first time and measuring the characteristic of the fluid in the sample chamber at a second time to obtain a second characteristic measurement. The second time is after the sample chamber is over-pressurized. In addition, the example method includes calculating a first volume of a first component of the one or more components of the fluid based on the first characteristic measurement, the second characteristic measurement, the sample chamber volume measurement, the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.