NO923132L - PROCEDURE FOR AA CORRECT MAGNETIC MEASUREMENTS MADE IN A BROWN WITH A MEASURING DEVICE, FOR AA DETERMINE ITS ASIMUT - Google Patents
PROCEDURE FOR AA CORRECT MAGNETIC MEASUREMENTS MADE IN A BROWN WITH A MEASURING DEVICE, FOR AA DETERMINE ITS ASIMUTInfo
- Publication number
- NO923132L NO923132L NO92923132A NO923132A NO923132L NO 923132 L NO923132 L NO 923132L NO 92923132 A NO92923132 A NO 92923132A NO 923132 A NO923132 A NO 923132A NO 923132 L NO923132 L NO 923132L
- Authority
- NO
- Norway
- Prior art keywords
- drill string
- asimut
- brown
- procedure
- measuring device
- Prior art date
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
Et måleverktøy som omfatter en enhet (4), for å måle jor- dens magnetfelt, fores inn i en borestreng (2) som forbinder et boreverktøy (3) med en overflateinstallasjon. Fremgangs- måten gjer det mulig å skille ut forstyrrelser som påvirker det målte jordmagnetfeltet, og som skyldes f.eks. borestren- gen. Den omfatter stegene å stoppe verktøyet i løpet av dettes fremdrift i brønnen i suksessive stopp-posisjoner plassert i avstand fra hverandre langs borestrengens akse, hvor vinkelposisjonen av måleenheten (4) i disse posisjonene er tilfeldig, og ved å benytte en statistisk beregningsmetode for å kombinere de forskjellige målingene og bestemme det forstyrrende feltet. Mulige anvendelser er f.eks. bestemmelse av en brønns asimut og helningsvinkel.A measuring tool comprising a unit (4), for measuring the earth's magnetic field, is fed into a drill string (2) connecting a drilling tool (3) to a surface installation. The method makes it possible to distinguish disturbances affecting the measured earth magnetic field, which are due, for example, to the drill string. It comprises the steps of stopping the tool during its progress in the well in successive stop positions spaced apart along the axis of the drill string, where the angular position of the unit of measurement (4) in these positions is random, and by using a statistical calculation method to combine the various measurements and determine the interfering field. Possible uses are e.g. determination of a well's azimuth and inclination angle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9015656A FR2670532B1 (en) | 1990-12-12 | 1990-12-12 | METHOD FOR CORRECTING MAGNETIC MEASUREMENTS MADE IN A WELL BY A MEASURING APPARATUS FOR THE PURPOSE OF DETERMINING ITS AZIMUT. |
PCT/FR1991/001000 WO1992010642A1 (en) | 1990-12-12 | 1991-12-11 | Method for correcting magnetic measurements made to determe the azimuth of a well |
Publications (2)
Publication Number | Publication Date |
---|---|
NO923132D0 NO923132D0 (en) | 1992-08-11 |
NO923132L true NO923132L (en) | 1992-10-12 |
Family
ID=26228382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO92923132A NO923132L (en) | 1990-12-12 | 1992-08-11 | PROCEDURE FOR AA CORRECT MAGNETIC MEASUREMENTS MADE IN A BROWN WITH A MEASURING DEVICE, FOR AA DETERMINE ITS ASIMUT |
Country Status (1)
Country | Link |
---|---|
NO (1) | NO923132L (en) |
-
1992
- 1992-08-11 NO NO92923132A patent/NO923132L/en unknown
Also Published As
Publication number | Publication date |
---|---|
NO923132D0 (en) | 1992-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DK168125B1 (en) | PROCEDURE FOR REMOVING THE INFLUENCE OF BORING STRENGTH MAGNETIZATION ON AN AZIMUT MEASUREMENT IN A BOREHOLE | |
US4761889A (en) | Method for the detection and correction of magnetic interference in the surveying of boreholes | |
US6179067B1 (en) | Method for magnetic survey calibration and estimation of uncertainty | |
SE8304214L (en) | DRILLING MONITORING MONITORING | |
CA2063218A1 (en) | Stand-off compensated formation measurements apparatus and method | |
GB2256492A (en) | Method for correcting magnetic measurements made to determe the azimuth of a well | |
BR9900528A (en) | Apparatus and process for determining a drilling mode to optimize the formation assessment measures. | |
CA2455581A1 (en) | Downhole calibration system for directional sensors | |
CA2381107A1 (en) | Standoff compensation for nuclear measurements | |
WO2010096653A2 (en) | Multi-station analysis of magnetic surveys | |
US20090037110A1 (en) | Wellbore surveying | |
NO20035608L (en) | Detection of borehole currents in well logging | |
WO2005116392A1 (en) | Core analysis | |
DE3673575D1 (en) | METHOD AND DEVICE WITH HOLE HOLE COMPENSATION. | |
Thorogood et al. | Surveying techniques with a solid-state magnetic multishot device | |
EA001224B1 (en) | Method of qualifying a borehole survey | |
BR9909794A (en) | Measurement of porosity and permeability of underground formations containing crude oil using epr response data | |
NO924117L (en) | PROCEDURE FOR AUTOMATIC MONITORING OF VIBRATION CONDITIONS OF A DRILL STRING | |
NO923132L (en) | PROCEDURE FOR AA CORRECT MAGNETIC MEASUREMENTS MADE IN A BROWN WITH A MEASURING DEVICE, FOR AA DETERMINE ITS ASIMUT | |
Francis et al. | Evaluation of the precision of using absolute gravimeters to calibrate superconducting gravimeters | |
US3025398A (en) | Method and apparatus for determining depth of well samples | |
US5272629A (en) | Method for determining the slowing down length and the porosity of a formation surrounding a borehole | |
CA2261712A1 (en) | Detection of water constituents | |
EP1088152B1 (en) | Method of determining azimuth of a borehole | |
SE8602406D0 (en) | SET TO DETERMINE DENSITY FOR UNDERLYING STOCK |