Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent
1998-04-13
2000-12-12
Tsay, Frank
Boring or penetrating the earth
With tool shaft detail
Shaft carried guide or protector
175 73, E21B 708
Patent
active
061585335
ABSTRACT:
A downhole drilling assembly including a housing having an upper end for connection to a drill string and a lower end, a fluid passage extending through the housing from the upper end to the lower end, a power unit contained within the housing, a drive assembly extending within the housing between the power unit and the lower end of the housing such that a mandrel chamber is defined between the drive assembly and the housing, a radially movable stabilizer associated with the housing, and an axially movable mandrel contained within the mandrel chamber, the mandrel being associated with a stabilizer actuator for causing radial movement of the stabilizer in response to axial movement of the mandrel.
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Sperry-Sun Drilling Services, a division of Dresser Industries, Inc., Operations Manual for Adjustable Gauge Stabilizer (AGS.TM.) dated 1997 (62 pages).
Sperry-Sun Drilling Services, Inc., catalogue entitled "Sourcebook", 1996, pp. 46-52 ("Downhole Motors") and pp. 53-55 ("Drilling Tools").
Sperry-Sun Drilling Services, Inc., "Sperry Drill Technical Information Handbook," undated, pp. 2-17.
Comeau Laurier E.
Crase Gary M.
Gillis Ian
Reid Charles M.
Roberts Paul
Halliburton Energy Service,s Inc.
Kuharchuk Terrence N.
McCollum Patrick H.
Montalvo Eugene R.
Tsay Frank
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