公开(公告)号：US20130140029A1

公开(公告)日：2013-06-06

申请号：US13686564

申请日：2012-11-27

申请人： Michael Keith Sullivan ,  Shane Paul Hart ,  Mark Christopher Glaser ,  Ruairidh Cooper

发明人： Michael Keith Sullivan ,  Shane Paul Hart ,  Mark Christopher Glaser ,  Ruairidh Cooper

IPC分类号： E21B17/02

CPC分类号： E21B17/021 ,  E21B17/06 ,  E21B34/06 ,  E21B37/00

摘要： A work string assembly for an oil or gas well has a first and second tubulars, and a torque limiting device connected in the work string. The torque limiting device has a body with an axial bore and two interconnected members that can disconnect to be relatively rotatable. The interconnected members can be repeatedly re-engageable when the torque levels drop below a torque threshold value, or can be connected by a frangible member that is broken when the interconnected members disconnect. A selectively actuable circulation port provided in the string adjacent to and above the torque limiting device allows the annulus between the work string and the casing to be flushed with fluid from the port.

摘要翻译： 用于油井或气井的工作串组件具有第一和第二管，以及连接在工作串中的扭矩限制装置。 扭矩限制装置具有带有轴向孔的主体和两个相互连接的构件，其可断开以相对旋转。 当扭矩水平下降到扭矩阈值以下时，互连构件可以重复地重新接合，或者可以通过在互连构件断开时破裂的易碎构件来连接。 设置在扭矩限制装置中和上方的弦中的选择性致动的循环端口允许用来自端口的流体冲洗工作串和壳体之间的环形空间。