Method of estimating physical parameters of a geological formation
US8583378B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2009 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Dec 26, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A well passing through a geological formation is fitted with a tube, open at its bottom end, that is filled with a fluid. Another fluid is in the annular space between the tube and the wall of the well, the two fluids exhibiting an interface situated in the annular space. A hydraulic balance of the fluids of the well is disturbed and the trend of certain quantities is measured. These measurements are moreover simulated by computer by using different sets of values for the physical parameters, and efforts are made to estimate the geological formation. A comparison of the measurements with the simulation results makes it possible to identify an optimum set of values for the parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.