Invention Grant
US08485280B2 Core drilling tools with retractably lockable driven latch mechanisms
有权
具有可伸缩锁定驱动闩锁机构的钻芯工具
- Patent Title: Core drilling tools with retractably lockable driven latch mechanisms
- Patent Title (中): 具有可伸缩锁定驱动闩锁机构的钻芯工具
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Application No.: US12968127Application Date: 2010-12-14
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Publication No.: US08485280B2Publication Date: 2013-07-16
- Inventor: Christopher L. Drenth , George Iondov , George Ibrahim
- Applicant: Christopher L. Drenth , George Iondov , George Ibrahim
- Applicant Address: US UT South Jordan
- Assignee: Longyear TM, Inc.
- Current Assignee: Longyear TM, Inc.
- Current Assignee Address: US UT South Jordan
- Agency: Ballard Spahr LLP
- Main IPC: E21B25/02
- IPC: E21B25/02 ; E21B10/02 ; E21B23/02

Abstract:
Implementations of the present invention include a core barrel assembly having a driven latch mechanism. The driven latch mechanism can lock the core barrel assembly axially and rotationally relative to a drill string. The driven latch mechanism can include a plurality of wedge members positioned on a plurality of driving surfaces. Rotation of the drill string can cause the plurality of wedge members to wedge between an inner diameter of the drill string and the plurality of driving surfaces, thereby rotationally locking the core barrel assembly relative to the drill string. The driven latch mechanism can further include a refracted groove adapted to lock the plurality of wedge members radially within the core barrel assembly, thereby allowing for faster travel within the drill string. Implementations of the present invention also include drilling systems including such driven latch mechanisms, and methods of retrieving a core sample using such drilling systems.
Public/Granted literature
- US20110079436A1 CORE DRILLING TOOLS WITH RETRACTABLY LOCKABLE DRIVEN LATCH MECHANISMS Public/Granted day:2011-04-07
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