Methods for determining oil and water compositions in drilling muds
US10527566B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2016 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jun 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A nuclear magnetic resonance (NMR) system and method for determining oil and water composition in drilling mud by separating out signals from oil and water in a two dimensional relaxation space wherein the oil and water ratio is a function of the separated out signals. The spin-lattice relaxation time distribution or a spin-spin relaxation time distribution of the sample is measured and a spin-lattice versus spin-spin or a spin-spin versus diffusion two-dimensional procedure is applied to separate the components of the drilling fluid. The signal intensities from the oil and water regions of the one-dimensional or two-dimensional NMR measurements are used to quantify the relative portion of the proton NMR signal from the oil and water and to determine the ratio of oil and water in the drilling mud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.