Boots – shoes – and leggings
Patent
1988-11-22
1991-04-30
Smith, Jerry
Boots, shoes, and leggings
33302, 33313, E21B 47022
Patent
active
050124129
ABSTRACT:
A method and apparatus is presented for measuring the azimuth angle of a borehole being drilled, the data for determining the azimuth angle being obtained while the drillstring is rotating.
REFERENCES:
patent: 4163324 (1979-08-01), Russell et al.
patent: 4433491 (1982-02-01), Ott et al.
patent: 4472884 (1984-09-01), Engebretson
patent: 4709486 (1987-12-01), Walters
Smith Jerry
Tbui Kim Thanh
Teleco Oilfield Services Inc.
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