NO974003L - Posisjonsdeteksjonsanordning - Google Patents
PosisjonsdeteksjonsanordningInfo
- Publication number
- NO974003L NO974003L NO974003A NO974003A NO974003L NO 974003 L NO974003 L NO 974003L NO 974003 A NO974003 A NO 974003A NO 974003 A NO974003 A NO 974003A NO 974003 L NO974003 L NO 974003L
- Authority
- NO
- Norway
- Prior art keywords
- magnetic
- detection device
- position detection
- magnetic poles
- predetermined direction
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title abstract 3
- 230000004907 flux Effects 0.000 abstract 2
- 239000003381 stabilizer Substances 0.000 abstract 2
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)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Vehicle Body Suspensions (AREA)
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
En posisjonsdeteksjonsanordning for deteksjon av posisjonen av stillbare stabilisatorblad (3) i en bunnmontasje i en borestreng (2) i et borehull omfatter en magnetisk krets med variabel reluk- tans, hvilken krets omfatter en indre magnetdel (7) og en ytre, magnetiserbar del (4) som er bevegelige i forhold til hverandre langs en forutbestemt retning (5) mellom to tilstander i hvilke reluk- tansen av den magnetiske krets er for- skjellig på grunn av de forskjellige relative posisjoner av de indre og ytre deler (7, 4). Den indre del (7) omfatter en detektor (8) omfattende en permanent- magnet (9 ) med magnetpoler som er orien- tert slik at det tilveiebringes et mag- netisk felt med et parti som strekker seg på tvers av den forutbestemte ret- ning (5), og en magnetoresistiv fluks- føler (15) med en avfølingsakse (17) som er orientert i forhold til magnetpolene slik at det tilveiebringes et utgangs- signal som indikerer vinkelen mellom den avfølte fluks i nærheten av den ene av magnetpolene og avfølingsaksen (17) og avhengig av de relative posisjoner av de indre og ytre deler (7, 4). En slik ny posisjonsdeteksjonsanordning tilveie- bringer en sikker indikasjon på posi- sjonen av stabilisatorbladene ved en slik anvendelse.
Applications Claiming Priority (2)
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
NO974003D0 NO974003D0 (no) | 1997-09-01 |
NO974003L true NO974003L (no) | 1997-10-31 |
Family
ID=10770488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO974003A NO974003L (no) | 1995-03-02 | 1997-09-01 | Posisjonsdeteksjonsanordning |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0811107A1 (no) |
CA (1) | CA2213849A1 (no) |
GB (1) | GB9504151D0 (no) |
NO (1) | NO974003L (no) |
WO (1) | WO1996027068A1 (no) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2108678B (en) * | 1981-10-17 | 1985-09-11 | 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 |
DE3735066A1 (de) * | 1987-10-16 | 1989-04-27 | Bochumer Eisen Heintzmann | Drucksensor |
WO1993018369A1 (en) * | 1992-03-02 | 1993-09-16 | Seiko Epson Corporation | Displacement sensor |
US5311953A (en) * | 1992-08-07 | 1994-05-17 | Baroid Technology, Inc. | Drill bit steering |
US5318137A (en) * | 1992-10-23 | 1994-06-07 | Halliburton Company | Method and apparatus for adjusting the position of stabilizer blades |
-
1995
- 1995-03-02 GB GBGB9504151.3A patent/GB9504151D0/en active Pending
-
1996
- 1996-02-29 CA CA002213849A patent/CA2213849A1/en not_active Abandoned
- 1996-02-29 EP EP96904185A patent/EP0811107A1/en not_active Ceased
- 1996-02-29 WO PCT/GB1996/000444 patent/WO1996027068A1/en not_active Application Discontinuation
-
1997
- 1997-09-01 NO NO974003A patent/NO974003L/no unknown
Also Published As
Publication number | Publication date |
---|---|
EP0811107A1 (en) | 1997-12-10 |
GB9504151D0 (en) | 1995-04-19 |
NO974003D0 (no) | 1997-09-01 |
WO1996027068A1 (en) | 1996-09-06 |
AU690822B2 (en) | 1998-04-30 |
CA2213849A1 (en) | 1996-09-06 |
AU4837896A (en) | 1996-09-18 |
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