Tool driving or impacting – Processes
Patent
1989-03-27
1991-02-19
Watts, Douglas D.
Tool driving or impacting
Processes
173 21, 173 28, 173 84, 173 86, 173124, E21B 4902
Patent
active
049935003
ABSTRACT:
An automatic drive hammer system includes an automatic drive hammer apparatus which is carried by a bucket pivotally mounted to a drill rig. The drive hammer apparatus may be pivoted in the bucket from an off-hole storage position to an on-hole loading/unloading position whereby the drive hammer apparatus is lifted out of the bucket by a winch assembly and the bucket is pivoted to the off-hole storage position. An anvil and connector connects to a drill string and sampler which extend upwardly from a hole in the ground. The drive hammer apparatus has a housing which contains a hammer adapted for reciprocal sliding movement therewithin to cyclically strike the anvil to drive the anvil, drill string and sampler combination into the ground. A trip rail is rigidly attached to the anvil and extends within the housing. A follower assembly is pivotally mounted to the hammer. A hammer drop system cyclically lifts the hammer via the follower assembly off the anvil and when the follower assembly reaches the top of the trip rail, the follower assembly falls away from the hammer drop system allowing the hammer to free fall and strike the anvil.
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Greene R. Richard
Sams Rick
Mobile Drilling Company, Inc.
Rada Rinaldi
Watts Douglas D.
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