Neutron absorber-doped drilling mud and characterization of natural fractures
US11480046B2 · kind B2 · utility
1Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2020 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Dec 23, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Gadolinium- or boron-doped drilling mud is used during drilling so that it will penetrate all natural cracks in the formation that intersect with the wellbore. Once cased, cemented and washed, the doped mud will only be in the fractures. Pulsed neutron logging is performed, and natural factures thereby characterized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.