公开(公告)号：US5746279A

公开(公告)日：1998-05-05

申请号：US602485

申请日：1996-02-20

申请人： Kenneth Havlinek ,  Thomas D. MacDougall ,  Alan Sallwasser ,  Miles Jaroska ,  Duane LaDue ,  Wayne A. Tyler ,  Mario Flores ,  Mark L. Hinton ,  Thomas D. Svoboda ,  Michele Tesciuba

发明人： Kenneth Havlinek ,  Thomas D. MacDougall ,  Alan Sallwasser ,  Miles Jaroska ,  Duane LaDue ,  Wayne A. Tyler ,  Mario Flores ,  Mark L. Hinton ,  Thomas D. Svoboda ,  Michele Tesciuba

IPC分类号： E21B7/06 ,  E21B19/18 ,  E21B49/06 ,  E21B29/06 ,  E21B43/112

CPC分类号： E21B49/06 ,  E21B19/18 ,  E21B7/061

摘要： An apparatus and method are disclosed for the removal and replacement of the used drill bit after each perforation through casing, cement, and into rock while using a flexible drive shaft. This apparatus involves both a bayonet-style "quick connector" between the flexible shaft and the drill bit and a cartridge that holds the drill bits while they await their turn to be used. The apparatus also has a means for indexing the cartridge so that the flexible shaft can have access to each of the drill bits in the cartridge. The method disclosed involves the process of connecting the flexible shaft to the drill bit at the start of the perforating process, the disconnecting of the used bit at the end of the perforation, and the indexing of the cartridge so that the next drill bit is in line with the flexible shaft for the next perforation.

摘要翻译： 公开了一种装置和方法，用于在使用柔性驱动轴的每个穿孔之后通过套管，水泥和岩石移除和更换二手钻头。 该装置包括柔性轴和钻头之间的卡口式“快速连接器”，以及在等待转动时保持钻头的筒。 该装置还具有用于对盒进行分度的装置，使得柔性轴可以访问盒中的每个钻头。 所公开的方法涉及在穿孔过程开始时将柔性轴连接到钻头的过程，在穿孔末端处的用过的钻头的断开以及筒的分度，使得下一个钻头处于 与用于下一个穿孔的柔性轴线对齐。

公开(公告)号：US5687806A

公开(公告)日：1997-11-18

申请号：US603307

申请日：1996-02-20

申请人： Alan Sallwasser ,  Kenneth Havlinek ,  Thomas D. MacDougall ,  Miles Jaroska ,  Duane LaDue ,  Wayne A. Tyler ,  Mario Flores ,  Mark L. Hinton ,  Thomas D. Svoboda ,  Michele Tesciuba

发明人： Alan Sallwasser ,  Kenneth Havlinek ,  Thomas D. MacDougall ,  Miles Jaroska ,  Duane LaDue ,  Wayne A. Tyler ,  Mario Flores ,  Mark L. Hinton ,  Thomas D. Svoboda ,  Michele Tesciuba

IPC分类号： E21B7/06 ,  E21B49/06 ,  E21B4/16 ,  E21B7/08 ,  E21B17/20

CPC分类号： E21B7/061 ,  E21B49/06

摘要： An apparatus and method are disclosed for applying thrust (weight on bit) to a drill bit when drilling with a flexible drilling shaft while creating perforations in a cased well. The thrust is applied directly to the drill bit instead of applying it to the drill bit through the flexible drilling shaft. A support bracket is also in contact with a piston and is in slidable contact with the tool housing. A portion of the piston is positioned inside a chamber in the housing and is slidably attached to the chamber walls. As hydraulic fluid flows into the chamber opposite the piston, the piston is forced toward the drill bit. As the piston moves toward the drill bit, force is exerted on the support bracket which causes the bracket to move toward the drill bit. This force is transferred to the drill bit during the drilling process, thereby supplying the force (weight on bit) needed by the drill bit to effectively drill through a desired material.

摘要翻译： 公开了一种用于在用柔性钻井轴钻孔的同时在套管井中产生穿孔时将推力（钻头重量）施加到钻头的装置和方法。 推力直接施加到钻头上，而不是通过柔性钻杆将其施加到钻头上。 支撑托架也与活塞接触并且可与工具壳体滑动接触。 活塞的一部分位于壳体内的室内，并且可滑动地附接到室壁。 当液压流体流入与活塞相对的腔室时，活塞被迫朝向钻头。 当活塞向钻头移动时，力被施加在支撑托架上，导致托架向钻头移动。 在钻孔过程中，该力传递到钻头，从而提供钻头所需的力（钻头重量）以有效地穿透所需材料。