Application of binomial-edited CPMG to shale characterization
Journal of Magnetic Resonance
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Abstract
Unconventional shale resources may contain a significant amount of hydrogen in organic solids such as kerogen, but it is not possible to directly detect these solids with many NMR systems. Binomial-edited pulse sequences capitalize on magnetization transfer between solids, semi-solids, and liquids to provide an indirect method of detecting solid organic materials in shales. When the organic solids can be directly measured, binomial-editing helps distinguish between different phases. We applied a binomial-edited CPMG pulse sequence to a range of natural and experimentally-altered shale samples. The most substantial signal loss is seen in shales rich in organic solids while fluids associated with inorganic pores seem essentially unaffected. This suggests that binomial-editing is a potential method for determining fluid locations, solid organic content, and kerogen–bitumen discrimination.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Application of binomial-edited CPMG to shale characterization |
| Series title | Journal of Magnetic Resonance |
| DOI | 10.1016/j.jmr.2014.06.014 |
| Volume | 246 |
| Year Published | 2014 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Central Energy Resources Science Center |
| Description | 7 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Magnetic Resonance |
| First page | 72 |
| Last page | 78 |
| Google Analytic Metrics | Metrics page |