Method and device for determining a space position of the axis o

Details Method and device for determining a space position of the axis o Method and device for determining a space position of the axis o

1996-10-28

2000-03-28

Fulton, Christopher W.

Geometrical instruments

Indicator of direction of force traversing natural media

Borehole direction or inclination

33313, 33544, E21B 47022, G01C 900

Patent

active

060415096

ABSTRACT:
The essence of the proposed method resides in that assumed as the datum point of measurement of the well azimuth is an azimuthally stabilized housing of a down-the-hole inclinometer and the magnitude of the azimuth is determined by measuring the angle of rotation of the housing of the down-the-hole instrument (1) round its longitudinal axis, which rotation occurs in response to an azimuthal deviation of the longitudinal axis of a well (5). According to a first embodiment of the proposed device, it comprises a plurality of spring-loaded arcuate elements (3) secured on an external surface (2) of the housing of the down-the-hole instrument (1) so as to form at least three rows, each row consisting of at least three elements (3), each of the latter establishing, together with an internal surface (4) of the well (5), a contact spot (6) whose portion having a greater size (h) is arranged lengthwise the longitudinal axis of the well (5).

REFERENCES:
patent: 4192077 (1980-03-01), Van Steenwyk et al.
patent: 4199869 (1980-04-01), Van Steenwyk
patent: 4611405 (1986-09-01), Van Steenwyk
patent: 4835876 (1989-06-01), Petermann et al.
"Directional Surveying of Wells", V. Kh. Isachenko, Nedra PH, 1987 (English translation) (No Month Provided).

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