Elastic clamp head stopper on drill stem

The invention relates to an elastic clamp head stopper on a drill stem. The elastic clamp head stopper comprises an elastic clamp head body, wherein a stop lug is arranged at the threaded end of the elastic clamp head body, the stop lug is of an arc-shaped plate structure and is arranged on one side...

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Bibliographic Details
Main Authors BAO XINYI, SU GANG, YAO FENGLEI
Format Patent
LanguageChinese
English
Published 10.12.2014
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:The invention relates to an elastic clamp head stopper on a drill stem. The elastic clamp head stopper comprises an elastic clamp head body, wherein a stop lug is arranged at the threaded end of the elastic clamp head body, the stop lug is of an arc-shaped plate structure and is arranged on one side of the end of the elastic clamp head stopper, and the width degree of the arc ranges from 35 degrees to 40 degrees. According to the elastic clamp head stopper, original two narrow stop lugs are changed into the wide stop lug on one side, so that the anti-extruding strength of the stop lug is improved, it is guaranteed that the stop lug does not deform or fracture in the rotating operation process of the drill stem, and the stability and safety of the drill stem in operation are improved.
Bibliography:Application Number: CN20141447385