GB2313446B - Position detection devices - Google Patents
Position detection devicesInfo
- Publication number
- GB2313446B GB2313446B GB9717231A GB9717231A GB2313446B GB 2313446 B GB2313446 B GB 2313446B GB 9717231 A GB9717231 A GB 9717231A GB 9717231 A GB9717231 A GB 9717231A GB 2313446 B GB2313446 B GB 2313446B
- Authority
- GB
- United Kingdom
- Prior art keywords
- position detection
- detection devices
- devices
- detection
- 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.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/147—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
-
- 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
- E21B47/02—Determining slope or direction
- E21B47/024—Determining slope or direction of devices in the borehole
-
- 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
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
- E21B47/092—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes by detecting magnetic anomalies
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9717231A GB2313446B (en) | 1995-03-02 | 1996-02-29 | Position detection devices |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9504151.3A GB9504151D0 (en) | 1995-03-02 | 1995-03-02 | Position detection devices |
PCT/GB1996/000444 WO1996027068A1 (en) | 1995-03-02 | 1996-02-29 | Position detection devices |
GB9717231A GB2313446B (en) | 1995-03-02 | 1996-02-29 | Position detection devices |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9717231D0 GB9717231D0 (en) | 1997-10-22 |
GB2313446A GB2313446A (en) | 1997-11-26 |
GB2313446B true GB2313446B (en) | 1999-05-12 |
Family
ID=26306605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9717231A Expired - Fee Related GB2313446B (en) | 1995-03-02 | 1996-02-29 | Position detection devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2313446B (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2108678A (en) * | 1981-10-17 | 1983-05-18 | Armstrong Patents Co Ltd | Shock absorber or ram position sensing system |
US4719419A (en) * | 1985-07-15 | 1988-01-12 | Harris Graphics Corporation | Apparatus for detecting a rotary position of a shaft |
GB2211297A (en) * | 1987-10-16 | 1989-06-28 | Bochumer Eisen Heintzmann | A pressure sensor |
EP0594419A1 (en) * | 1992-10-23 | 1994-04-27 | Halliburton Company | Adjustable blade stabilizer for drilling system |
US5311953A (en) * | 1992-08-07 | 1994-05-17 | Baroid Technology, Inc. | Drill bit steering |
EP0629834A1 (en) * | 1992-03-02 | 1994-12-21 | Seiko Epson Corporation | Displacement sensor |
-
1996
- 1996-02-29 GB GB9717231A patent/GB2313446B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2108678A (en) * | 1981-10-17 | 1983-05-18 | Armstrong Patents Co Ltd | Shock absorber or ram position sensing system |
US4719419A (en) * | 1985-07-15 | 1988-01-12 | Harris Graphics Corporation | Apparatus for detecting a rotary position of a shaft |
GB2211297A (en) * | 1987-10-16 | 1989-06-28 | Bochumer Eisen Heintzmann | A pressure sensor |
EP0629834A1 (en) * | 1992-03-02 | 1994-12-21 | Seiko Epson Corporation | Displacement sensor |
US5311953A (en) * | 1992-08-07 | 1994-05-17 | Baroid Technology, Inc. | Drill bit steering |
EP0594419A1 (en) * | 1992-10-23 | 1994-04-27 | Halliburton Company | Adjustable blade stabilizer for drilling system |
Non-Patent Citations (2)
Title |
---|
"Non-contact analog rotary position sensor" * |
IBM Technical Disclosure Bulletin, July 1984, USA Vol.27, No.2, page 1195, Griffing B.M,, * |
Also Published As
Publication number | Publication date |
---|---|
GB2313446A (en) | 1997-11-26 |
GB9717231D0 (en) | 1997-10-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20000229 |