Material or article handling – Well pipe or rod racking mechanism – With slope change
Patent
1991-08-28
1994-03-15
Dayoan, D. Glenn
Material or article handling
Well pipe or rod racking mechanism
With slope change
414 2262, E21B 1900
Patent
active
052942287
ABSTRACT:
An earth drilling machine of the type having a boom mounted adjacent a mast to move a tubular between a lower, horizontal boom position and an upper, vertical boom position also includes a lifter configured to move a length of downhole tubular between a lower lifter position aligned with a tubular storage device and an upper lifter position aligned with the lower boom position. An automatic sequencing system includes multiple position sensors responsive to the position of at least the boom, the lifter and a length of downhole tubular at selected positions. A sequencing system is responsive to the position sensors for automatically coordinating movement of the lifter and the boom to reduce or eliminate delays occasioned by tubular handling.
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Lingafelter Jerry K.
Willis Clyde A.
Dayoan D. Glenn
Milef Boris
W-N Apache Corporation
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