发明名称 |
Direct push drilling swivel and method for its use |
摘要 |
A power swivel provides the rotational force to drill consolidated subsurface strata while an unrestricted airflow through the swivel and down a drill string remove cuttings from the borehole. The power swivel is configured to mount on direct push/driven-vibrating equipment, such as a cone penetrometer, to eliminate the need for a conventional drilling rig when a consolidated layer is encountered during direct push/driven-vibrating operations. A drilling nipple and pack-off are provided near the surface to maintain the air flow during drilling and to direct the cuttings to a desired location. Also, a dual-valved air delivery system provides safe, remote-controlled air flow to the swivel.
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申请公布号 |
US6814166(B1) |
申请公布日期 |
2004.11.09 |
申请号 |
US20020235532 |
申请日期 |
2002.09.06 |
申请人 |
THE UNIVERSITY OF CHICAGO |
发明人 |
LAFRENIERE LORRAINE M.;SURGNIER DAVID H. |
分类号 |
E21B3/02;E21B21/08;E21B21/16;(IPC1-7):E21B3/02 |
主分类号 |
E21B3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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