发明名称 Integral tubing head and rotator
摘要 A tubing head is provided for accommodating a rotator. The rotator includes a drive gear and a swivel tubing hanger which engages an internal surface of the tubing head and comprises a driven gear for engaging the drive gear. The tubing head defines a gear housing for the drive gear so that the drive gear may releasably engage the driven gear. The internal surface, gear housing and drive and driven gears are configured such that when the drive gear is in the gear housing, the tubing hanger engages the internal surface and the drive and driven gears are engaged, the tubing hanger may be removed from the tubing head by pulling it through the upper end without first disengaging the drive and driven gears. An apparatus is also provided comprising the tubing head, the swivel tubing hanger and the drive gear.
申请公布号 US6026898(A) 申请公布日期 2000.02.22
申请号 US19970967439 申请日期 1997.11.11
申请人 CAMPBELL INDUSTRIES LTD. 发明人 BLAND, LINDEN H.;CAMPBELL, DAVID W.
分类号 E21B33/04;E21B43/12;(IPC1-7):E21B33/04 主分类号 E21B33/04
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