Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Patent
1990-08-10
1991-09-17
Dang, Hoang C.
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Sectional guide or shaft having means to lock sections in...
175256, 175320, E21B 708
Patent
active
050486217
ABSTRACT:
An adjustable bent housing for controlled directional drilling of well holes. The bend angle of the housing can be conveniently adjusted upon release of the locking nut which is threadably mounted to the motor casing. The locking nut engages an adjusting ring having splines to lockingly engage both the motor casing and the adjustment sub. The adjustment sub and motor casing are lockingly engaged against axial displacement by threads and a plurality of locking balls. An end portion of the outer surface of the motor casing and an end portion of the inner surface of the sub have an angle offset from the central axis to allow angle adjustment. The adjusting ring and locking nut are mounted to the coaxial portions of the components to simplify machining and ensure a clean locking engagement. Adjustment of the bend angle is accomplished by loosening the locking nut to disengage the adjusting ring and allow rotation of the motor casing relative to the universal housing sub.
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Bailey Thomas F.
Campbell John E.
Dang Hoang C.
MASX Energy Services Group, Inc.
Sutherland Malcolm L.
Zarins Edgar A.
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