公开(公告)号：WO2014105081A1

公开(公告)日：2014-07-03

申请号：PCT/US2012/072307

申请日：2012-12-31

Applicant: HALLIBURTON ENERGY SERVICES INC.

Inventor： CRAWFORD, Micheal B. ,  WILLIAMS, Mark E. ,  LEE, Young H. ,  DUCKWORTH, David P. ,  SHAN, Zhaohui

IPC: E21B10/25

CPC classification number: E21B10/25 ,  E21B2010/225

Abstract: A downhole seal system for roller cone drill bits includes a seal gland having a width larger than it depth. In one implementation, the seal gland includes a protrusion along its base on which a seal element seats. The seal element is a single, annular seal element with a recess formed therein so as to define two lobes. The seal element seats in the gland so that the recess engages the protrusion. The lobes function as separate seal elements, although they are a single unitary seal element disposed in a single gland.

Abstract translation: 用于辊锥钻头的井下密封系统包括具有大于其深度的宽度的密封压盖。 在一个实施方案中，密封压盖包括沿着其底部的突起，密封元件位于该底部上。 密封元件是单个环形密封元件，其中形成有凹部以限定两个凸角。 密封元件位于密封套中，使得凹部与突起接合。 裂片作为单独的密封元件起作用，尽管它们是设置在单个密封件中的单个单一密封元件。

公开(公告)号：WO2014062415A1

公开(公告)日：2014-04-24

申请号：PCT/US2013/063799

申请日：2013-10-08

Applicant: HALLIBURTON ENERGY SERVICES, INC.

Inventor： LEE, Young H.

IPC: E21B10/60 ,  E21B10/573

CPC classification number: E21B10/24 ,  F16C33/66 ,  F16C2352/00

Abstract: According to one embodiment, the disclosure relates to a roller cone drill bit including a bit body having at least one support arm extending therefrom, a cone assembly containing bearings or retaining balls and rotatably mounted on a journal extending from each support arm, a lubricant reservoir disposed in each support arm, a lubricant chamber disposed in each support arm and fluidly coupled to the bearings or retaining balls, a bore disposed in each support arm to communicate lubricant between the lubricant reservoir and the lubricant chamber, and a pressure release mechanism disposed within the bore. The pressure release mechanism may be operable to relieve lubricant from the lubricant reservoir into the lubricant chamber when lubricant pressure within the lubricant reservoir exceeds pressure of the lubricant in the lubricant chamber. According to another embodiment, the disclosure relates to methods of relieving lubricant in such a bit.

Abstract translation: 根据一个实施例，本发明涉及一种滚子锥钻头，其包括具有从其延伸的至少一个支撑臂的钻头体，包含轴承或保持球并且可旋转地安装在从每个支撑臂延伸的轴颈上的锥体组件， 设置在每个支撑臂中的润滑剂室，设置在每个支撑臂中并流体耦合到所述轴承或保持球，设置在每个支撑臂中的孔，以在润滑剂储存器和润滑剂室之间连通润滑剂，以及设置在润滑剂容器内的压力释放机构 孔。 当润滑剂储存器中的润滑剂压力超过润滑剂室中的润滑剂的压力时，压力释放机构可以用于将润滑剂从润滑剂储存器释放到润滑剂室中。 根据另一个实施例，本公开涉及在这样的位中减轻润滑剂的方法。