FIELD: mining.
SUBSTANCE: pressure at the outlet of at least one actuating mechanism capable of diverting a link of drilling string bottom layout is used to detect direction of a diverted link. In one version of realisation, the available pressure at the outlet is correlated with available orientation and/or angular displacement, and measured pressure at the outlet is compared to the available pressure at the outlet to detect orientation and/or angular displacement. In another version of realisation the flow of liquid medium released from the actuating mechanism is produced from the pressure at the outlet. The flow at the outlet is then used to calculate a set of data on condition of actuation parameters, which provide for detection of angles of displacement of the diverting link. Orientation and/or angular displacement relative to the drilling string bottom layout may be set according to inclination and azimuth relative to a bed.
EFFECT: higher accuracy of detecting orientation and angular displacement of a diverting link of drilling string bottom layout.
18 cl, 3 dwg
Authors
Dates
2012-12-27—Published
2008-07-21—Filed