Boring or penetrating the earth – Processes
Patent
1985-07-12
1986-12-23
Leppink, James A.
Boring or penetrating the earth
Processes
175325, 403370, 403371, E21B 1710
Patent
active
046306900
ABSTRACT:
The present invention includes a tubular body member with a central bore which has two spiralling or threaded interior surfaces, each interior surface having a leading edge at nearly right angles to the longitudinal axis of the body and a sloped or tapered trailing edge along the bore from an end portion toward the central portion of the bore. The upper portion of the body has a left-hand spiralling or threaded surface. The lower portion of the body has a right-hand spiralling or threaded surface. Inserted into the central portion of the body member from each end is a slip segment or member. The outer surface of the upper slip segment has a left-hand spiralling or threaded surface, whereas the outer surface of the lower slip segment has a right-hand spiralling or threaded surface. Each such spiralling or threaded surface conforms to the spiralling or threaded surface of the corresponding interior surface of the stabilizer body. The interior surface of each slip segment opposite a spiralling outer surface of the segment is serrated to firmly engage a drill collar.
In the event the stabilizer becomes stuck in the hole the stabilizer is capable of being further tightened onto the collar by a right-hand rotation, an up pull or a down push.
REFERENCES:
patent: 2671641 (1954-03-01), Hinkle
patent: 3253332 (1966-05-01), Howlett et al.
patent: 3343808 (1967-09-01), Howlett
patent: 3754609 (1973-08-01), Garrett
patent: 3916998 (1975-11-01), Bass et al.
patent: 4000549 (1977-01-01), Brumley et al.
patent: 4101179 (1978-07-01), Barron
patent: 4105262 (1978-08-01), Richey
patent: 4131167 (1978-12-01), Richey
patent: 4245709 (1981-01-01), Manuel
patent: 4258804 (1981-03-01), Richey et al.
patent: 4337088 (1982-06-01), Moses
patent: 4349050 (1982-09-01), Bergstrom et al.
patent: 4378135 (1983-03-01), Enen et al.
patent: 4384626 (1983-05-01), Derouin
patent: 4438822 (1984-03-01), Russell
Beasley Thomas R.
Teng Chuan C.
Dailey Petroleum Services Corp.
Dang Hoang C.
Leppink James A.
LandOfFree
Spiralling tapered slip-on drill string stabilizer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spiralling tapered slip-on drill string stabilizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spiralling tapered slip-on drill string stabilizer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-167178