发明授权
- 专利标题: High productivity core drilling system
- 专利标题(中): 高效核心钻井系统
-
申请号: US13717421申请日: 2012-12-17
-
公开(公告)号: US09359847B2公开(公告)日: 2016-06-07
- 发明人: Christopher L. Drenth
- 申请人: Longyear TM, Inc.
- 申请人地址: US UT Salt Lake City
- 专利权人: Longyear TM, Inc.
- 当前专利权人: Longyear TM, Inc.
- 当前专利权人地址: US UT Salt Lake City
- 代理机构: Ballard Spahr LLP
- 主分类号: E21B25/02
- IPC分类号: E21B25/02 ; E21B23/00 ; E21B10/02
摘要:
High productivity core drilling systems include a drill string, an inner core barrel assembly, an outer core barrel assembly, and a retrieval tool that connects the inner core barrel assembly to a wireline cable and hoist. The drill string comprises multiple variable geometry drill rods. The inner core barrel assembly comprises a non-dragging latching mechanism, such as a fluid-driven latching mechanism that contains a detect mechanism that retains the latches in either an engaged or a retracted position. The inner core barrel assembly also comprised high efficiency fluid porting.
公开/授权文献
- US20130105227A1 HIGH PRODUCTIVITY CORE DRILLING SYSTEM 公开/授权日:2013-05-02