<p>A one trip top to bottom expansion to form a lower end recess on a tubular is described using two swages (26, 38) of different dimensions. The smaller swage (26) is run down hole with the larger swage (38) behind it in a locked collapsed position. When the proper depth is reached the leading swage (26) hits a no go. A pickup force with dogs (20) engaged in a groove (24) releases the lock on the larger swage (38) at which point applied pressure sets an anchor, extends the larger swage to take over the expansion for the recess at the lower end of the tubular (10). An emergency release is provided to pull out of the hole if the swage cannot complete the task.</p>
申请公布号
WO2009017939(A1)
申请公布日期
2009.02.05
申请号
WO2008US69410
申请日期
2008.07.08
申请人
BAKER HUGHES INCORPORATED;SMITH, ROBERT, C.;FARQUHAR, GRAHAM, E.