Calculation of NMDC length required for various latitudes developed from field measurements of drill string magnetisation

SPE/IADC Drilling Conference, Proceedings

Volumn 1983-February, Issue , 1983, Pages 217-221

  Grindrod, S J ^a   Wolff, J M ^a  

^a Producktie Lab ^*  (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DRILLS; INFILL DRILLING;

AZIMUTH ERROR; FIELD MEASUREMENT; MAGNETIC SURVEYS; MEASUREMENTS OF; NONMAGNETICS;

DRILL COLLARS;

EID: 85054412155     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2118/11382-ms     Document Type: Conference Paper

References (2)

1. Wolff, C.J.M. & de Wardt, J.Pt, Borehole position uncertainty-Analysis of measuring methods and derivation of systematic error model. J.P.T. Dec. 1981 pp. 2339-2350.
2. Magnetic charts issued by the hydrographer of the British Royal Navy.