Nmr flow measurement while drilling
Abstract
A method for measuring in-situ formation fluid flow in which an NMR logging sub-drilling tool is placed in a borehole, a modified saturation recovery pulse or flow angiograph pulse is used to mark spin in the formation, and at least two measurements are made by the labeled spins. as they propagate toward the borehole in the underbalanced environment, allowing a determination of fluid velocity from which permeability can be determined. Techniques for performing the method have been shown in both an overbalanced and underbalanced environment.
Term
No projected expiry on record.
- Priority
- Filed and published
- Today
1 claim: 1 independent, 0 dependent
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3 paragraphs, as filed
(71) Seeking (72) Inventor (74) Proxy
Shell International Research Company BV, PO Box 302,2596HR, HAAG, NL Matthias Appel, 38 Cavalier Close, NR70TE NORWICH, GB Martin Alfred Kraaijeld, 10 Cliftonville Road, NR337AY LOWESTOFT, SUFFOLK, GB Tandbergs Patentkontor AS, Postboks 7085 Majorstua, 0306 OSLO, NO (54) Nomenclature NMR flow measurement by drilling (57) Summary
A method for measuring in situ formation fluid flow at which an NMR logging sub-drilling tool is placed in a borehole, a modified saturation recovery pulse or fluid angiograph pulse is used to mark spin in the formation, and at least two measurements are made by the labeled spins as they propagate towards the borehole in the underbalanced environment, allowing a determination of fluid velocity from which permeability can be determined. Techniques for performing the method have been shown in both an overbalanced and underbalanced environment.
14 members in 8 offices
Priority claims6
| Document | Office | Kind | Date |
|---|---|---|---|
| 46576003 | United States of America | A | |
| 2004019610 | United States of America | W | |
| 10465760 | – | – | – |
| PCTUS0419610 | – | – | – |
| US20030465760 | – | – | – |
| WO2004US19610 | – | – | – |
Members14
| Document | Office | Kind | |
|---|---|---|---|
| US2004257074A1 | United States of America | A1 | |
| AU2004250230A1 | Australia | A1 | |
| CA2528472A1 | Canada | A1 | |
| WO2004113952A1 | World Intellectual Property Organization (WIPO) | A1 | |
| US6897652B2 | United States of America | B2 | |
| NO20060269LThis record | Norway | L | |
| EP1664848A1 | European Patent Office (EPO) | A1 | |
| EA200600056A1 | Eurasian Patent Organization (EAPO) | A1 | |
| BRPI0411538A | Brazil | A | |
| EA008071B1 | Eurasian Patent Organization (EAPO) | B1 | |
| AU2004250230B2 | Australia | B2 | |
| AU2004250230B9 | Australia | B9 | |
| EP1664848B1 | European Patent Office (EPO) | B1 | |
| CA2528472C | Canada | C |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Withdrawal, rejection or dismissal of laid open patent applicationFC2A | FC2A |
Numbers
- Publication, DOCDB
- 20060269
- Publication, EPODOC
- NO20060269L
- Application
- 269
- Application, DOCDB
- 20060269
- Application, EPODOC
- NO20060000269
Titles2
- Norwegian
- NMR-stromningsmaling ved boring
- English
- NMR flow mill at drilling
Classification
- CPC, 2
- G01V3/32
- E21B21/085
- IPC, 1
- G01V3 32