GB9908575D0 - Downhole electronics protection apparatus - Google Patents
Downhole electronics protection apparatusInfo
- Publication number
- GB9908575D0 GB9908575D0 GBGB9908575.5A GB9908575A GB9908575D0 GB 9908575 D0 GB9908575 D0 GB 9908575D0 GB 9908575 A GB9908575 A GB 9908575A GB 9908575 D0 GB9908575 D0 GB 9908575D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- protection apparatus
- downhole electronics
- electronics protection
- downhole
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/026—Current limitation using PTC resistors, i.e. resistors with a large positive temperature coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9908575.5A GB9908575D0 (en) | 1999-04-16 | 1999-04-16 | Downhole electronics protection apparatus |
AU41287/00A AU4128700A (en) | 1999-04-16 | 2000-04-17 | Downhole electronics protection apparatus |
PCT/GB2000/001377 WO2000064024A1 (en) | 1999-04-16 | 2000-04-17 | Downhole electronics protection apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9908575.5A GB9908575D0 (en) | 1999-04-16 | 1999-04-16 | Downhole electronics protection apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB9908575D0 true GB9908575D0 (en) | 1999-06-09 |
Family
ID=10851550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB9908575.5A Ceased GB9908575D0 (en) | 1999-04-16 | 1999-04-16 | Downhole electronics protection apparatus |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU4128700A (en) |
GB (1) | GB9908575D0 (en) |
WO (1) | WO2000064024A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1314239A2 (en) | 2000-08-31 | 2003-05-28 | Baker Hughes Incorporated | Filter-switched drive operating mode control |
US6667461B1 (en) * | 2002-06-19 | 2003-12-23 | Tyco Electronics Corporation | Multiple load protection and control device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3459256B2 (en) * | 1993-08-23 | 2003-10-20 | レイケム・コーポレイション | Use of Positive Thermistor in Wire Harness |
US5960883A (en) * | 1995-02-09 | 1999-10-05 | Baker Hughes Incorporated | Power management system for downhole control system in a well and method of using same |
-
1999
- 1999-04-16 GB GBGB9908575.5A patent/GB9908575D0/en not_active Ceased
-
2000
- 2000-04-17 WO PCT/GB2000/001377 patent/WO2000064024A1/en active Application Filing
- 2000-04-17 AU AU41287/00A patent/AU4128700A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2000064024A1 (en) | 2000-10-26 |
AU4128700A (en) | 2000-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AT | Applications terminated before publication under section 16(1) |