Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent
1986-07-23
1987-09-22
Novosad, Stephen J.
Boring or penetrating the earth
Processes
Boring curved or redirected bores
175 74, 175256, E21B 708
Patent
active
046949143
ABSTRACT:
The present invention relates to drilling a well with a bent bore. A bending device is inserted in a drilling string between a stabilizer and an active motor element. If the drilling string is rotated in one direction the bending device takes up a rectilinear configuration for ensuring rectilinear drilling, and if the drilling string is rotated in the opposite direction it takes up a bent configuration, thereby transforming itself into a bent coupling for curved drilling. The device comprises two superposed sleeves (1, 2) one of which is capable of rotating through a limited angle about a pivot (3) whose axis lies at the same small angle (A) to the axes (10, 10A) of both sleeves. The invention is applicable to drilling oil wells or geothermal wells.
REFERENCES:
patent: 3841420 (1974-10-01), Russell
patent: 4076084 (1978-02-01), Tighe
patent: 4077657 (1978-03-01), Trzeciak
patent: 4220214 (1980-09-01), Bonoit
patent: 4286676 (1981-09-01), Nguyen et al.
patent: 4303135 (1981-12-01), Bonoit
patent: 4319649 (1982-03-01), Jeter
patent: 4374547 (1983-02-01), Nguyen et al.
patent: 4465147 (1984-08-01), Feenstra et al.
patent: 4577701 (1986-03-01), Dellinger et al.
Alsthom
Melius Terry Lee
Novosad Stephen J.
LandOfFree
Drilling string for drilling a bent bore, a method of using said does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drilling string for drilling a bent bore, a method of using said, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling string for drilling a bent bore, a method of using said will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2053383