公开(公告)号：US20140353039A1

公开(公告)日：2014-12-04

申请号：US14375081

申请日：2012-01-27

申请人： ATLAS COPCO CANADA INC.

发明人： Paul Lambert ,  Patrick Salvador ,  Patrick Lu

IPC分类号： E21B34/06

CPC分类号： E21B34/08 ,  E21B25/02 ,  E21B34/06 ,  F16K35/06 ,  Y10T137/0396 ,  Y10T137/7069 ,  Y10T137/7854

摘要： A valve assembly for use in an inner tube member of a core barrel head assembly positionable within a drill string of a drilling apparatus. The valve assembly works using two separate surfaces A and B and a biasing element with a force FS. When hydrostatic pressure is present forces are created on these surfaces: FA and FB. These forces have a direct relationship with pressure, as an increase in pressure will increase the force and vice versa. The surface areas are designed such that: FA>FB+FS, which will maintain the valve closed while under a predetermined fluid pressure, indicating to the driller that the inner tube has landed. When the driller relieves the fluid pressure and the pressure decreases, the force difference between FA, FB and FS decreases until FA

摘要翻译： 一种阀组件，用于可定位在钻井设备的钻柱内的芯筒头组件的内管构件。 阀组件使用两个独立的表面A和B以及具有力FS的偏置元件来工作。 当存在静水压力时，在这些表面上产生力：FA和FB。 这些力与压力有直接关系，因为压力的增加会增加力，反之亦然。 表面积被设计成：FA> FB + FS，其将在预定流体压力下保持阀门关闭，向钻机指示内管已经降落。 当司钻减轻流体压力并且压力降低时，FA，FB和FS之间的力差减小直到FA

公开(公告)号：US20150014065A1

公开(公告)日：2015-01-15

申请号：US14375107

申请日：2013-01-25

申请人： ATLAS COPCO CANADA INC.

发明人： Paul Lambert ,  Patrick Salvador ,  Patrick Lu

IPC分类号： E21B34/08 ,  F16K35/06

CPC分类号： E21B34/08 ,  E21B25/02 ,  E21B34/06 ,  F16K35/06 ,  Y10T137/0396 ,  Y10T137/7069 ,  Y10T137/7854

摘要： A valve assembly for use in an inner tube member of a core barrel head assembly positionable within a drill string of a drilling apparatus. The valve assembly works using two separate surfaces and a biasing element with a force. When hydrostatic pressure is present forces are created on these surfaces, these forces have a direct relationship with pressure, as an increase in pressure will increase the force and vice versa. The surface areas are designed such that the valve will maintain closed while under a predetermined fluid pressure, indicating to the driller that the inner tube has landed. When the driller relieves the fluid pressure and the pressure decreases, the force difference between the respective forces decreases until the valve opens for drilling through the force from the biasing element.

摘要翻译： 一种阀组件，用于可定位在钻井设备的钻柱内的芯筒头组件的内管构件。 阀组件使用两个独立的表面和一个带有力的偏置元件工作。 当存在静水压力时，在这些表面产生力，这些力与压力有直接关系，因为压力的增加会增加力，反之亦然。 表面区域被设计成使得阀门在预定流体压力下保持关闭，向钻机指示内管已经降落。 当司钻减轻流体压力并且压力降低时，各个力之间的力差减小，直到阀打开以通过来自偏置元件的力来钻孔。