Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Patent
1986-01-27
1987-08-11
Stodola, Daniel P.
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Flexible coupling between fluid-conducting rotary shafts
Relative angular displacement of axes of shafts
175325, E21B 1710, E21B 1720
Patent
active
046858954
ABSTRACT:
A stabilizing mechanism for guiding drill direction of a flexible drill string when drilling the straight portion of a deviated well bore. The stabilizing mechanism comprises a tubular mandrel adapted for connection between the flexible drill string and a drill bit. The mandrel has at least two, reduced diameter areas spaced apart and disposed axially along its length. A non-rotating type stabilizer sleeve is positioned on each of the reduced diameter areas. Bearing means is provided at each end of each of the sleeves to reduce wear. The mandrel is capable of traversing a short radius curve of a deviated well.
REFERENCES:
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patent: 4456080 (1984-06-01), Holbert
"Drilco Stabilizers . . . Total Stabilization", Drilco, Div. of Smith International, Inc., publication No. 86, 5/79.
Stodola Daniel P.
Texas Eastern Drilling Systems, Inc.
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