Apparatus for stringing well pipe or casing

Tool driving or impacting – Means to drive tool about an axis – Means to hold and relatively rotate sections of tool shaft

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Details

173 73, 166 85, E21B 1916

Patent

active

044429070

ABSTRACT:
An apparatus for use in running a string of threaded well pipe or casing in a vertical configuration in a deep well bore which is adapted to convert a top head drive drilling rig for use in running each length of pipe into the well bore. A drive spindle adaptor is provided which may be securely attached in a removably mounted manner to the rotary drive spindle or sub of a top head drive drilling rig. The drive spindle includes a pair of opposing, outwardly extending lugs disposed at a right angle to the axial direction of the spindle and a true centering guide means. A collar is included which is provided with frictional gripping members for removably securing the collar to one end of a length of conventional pipe and a pair of axially extending, spaced ears which cooperate upon engagement with said lugs on said spindle adaptor to transfer rotary motion of said spindle to said length of pipe.

REFERENCES:
patent: 1264155 (1918-04-01), Chapman
patent: 2054223 (1936-09-01), Le Bus
patent: 2240738 (1941-05-01), Dunn
patent: 3685844 (1972-08-01), Sykes
patent: 3768579 (1973-10-01), Klein
patent: 3915243 (1975-10-01), Hisey et al.
patent: 4361353 (1982-11-01), Vinson

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