Magnetic resonance pulse sequences having wait times based on carrier speed
US10267946B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2016 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Apr 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2200/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An embodiment of a nuclear magnetic resonance (NMR) apparatus for estimating properties of an earth formation includes an NMR measurement device including a transmitting assembly configured to emit a pulse sequence and a receiving assembly configured to detect an echo train based on the pulse sequence, and a processor. The processor is configured to perform receiving input parameters including an axial speed of the NMR measurement device and a T1 value associated with a selected formation fluid, analyzing polarization data associated with the T1 value, the polarization data describing a dependency between polarization and axial speed, determining a wait time for the pulse sequence based on the polarization data, applying the pulse sequence with the determined wait time to the transmitting assembly, and estimating a property of the earth formation based on the echo train detected by the receiving assembly in response to the pulse sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.