Method for measuring critical condensate saturation pressure and critical condensate saturation of condensate gas by combining one-dimensional and two-dimensional nuclear magnetic resonance techniques
US12405236B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2025 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Apr 9, 2045 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method for measuring critical condensate saturation pressure and critical condensate saturation of condensate gas by combining one-dimensional and two-dimensional nuclear magnetic resonance techniques, which solves low measurement precision and complex test method. The present invention detects signal intensity of the hydrogen-containing fluid in a rock core by combining a one-dimensional nuclear magnetic resonance T2 spectrum testing technology and a two-dimensional nuclear magnetic resonance T1-T2 spectrum testing technology, achieves the optimization of an artificial zoning method by an improved difference spectroscopy method to reduce errors, greatly improves condensate signal identification precision, and more quickly and accurately measures the critical condensate saturation pressure and the critical condensate saturation. Therefore, the flow law of condensate oil and gas two-phases in a formation is better studied, a more reasonable development plan is favorably formulated by a gas reservoir, and theoretical guidance is provided for improving condensate recovery ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.