公开(公告)号：US4566545A

公开(公告)日：1986-01-28

申请号：US537115

申请日：1983-09-29

申请人： Arthur L. Story ,  Michael Filshtinsky

发明人： Arthur L. Story ,  Michael Filshtinsky

IPC分类号： E21B25/06 ,  E21B25/12

CPC分类号： E21B25/06 ,  E21B25/12

摘要： An improved coring device that incorporates a nonrotatable inner barrel disposed within the outer driving structure of the drill string which is coupled to the coring bit. A woven metal mesh sleeve is circumferentially mounted outside the inner barrel and tucked around its lower end. The lower end of the mesh sleeve in the inner barrel is in turn connected to a stripper tube which is pulled upwardly during the coring operation. As the core is cut by the coring bit and enters the inner barrel, the woven metal mesh sleeve is disposed about the core and constricts about the core when pulled upwardly by the stripper tube. The opposing end of the woven metal mesh sleeve is under a weight which serves to compress the metal sleeve when outside the inner barrel, thereby increasing its diameter. The plurality of wedge-shaped segments located on the top of the sleeve are collectively brought together to form a core catcher when that end of the woven metal mesh sleeve to which the segments are connected is drawn around and into the lower end of the inner barrel.

摘要翻译： 一种改进的取芯装置，其包括设置在钻柱的外部驱动结构内的不可旋转内筒，其连接到取芯钻头。 编织金属网套筒周向地安装在内筒的外侧并卷绕在其下端。 内筒中的网眼套筒的下端又连接到在取芯操作期间被向上拉的剥离管。 当核心被取芯钻头切割并进入内筒时，编织金属网套筒围绕芯部设置并且在被剥离管向上拉时围绕芯部收缩。 编织金属网眼套筒的相对端处于用于在内筒外侧压缩金属套筒的重量，从而增加其直径。 位于套筒顶部的多个楔形部分被共同地集合在一起形成一个芯捕获器，当该连接件的编织金属网套筒的端部被卷绕到内筒的下端 。

公开(公告)号：US4512423A

公开(公告)日：1985-04-23

申请号：US530783

申请日：1983-09-09

申请人： James T. Aumann ,  Michael Filshtinsky

发明人： James T. Aumann ,  Michael Filshtinsky

IPC分类号： E21B25/06

CPC分类号： E21B25/06

摘要： An improved coring device that incorporates a nonrotatable inner barrel disposed within the outer driving structure of the drill string which is coupled to a coring bit. A woven metal mesh sleeve is circumferentially mounted outside the inner barrel and tucked around its lower end. The lower end of the mesh sleeve in the inner barrel is in turn connected to a stripper tube which is pulled upwardly during the coring operation. As the core is cut by the coring bit and enters the inner barrel, the woven metal mesh sleeve is disposed about the core and constricts about the core when pulled upwardly by the stripper tube. The opposing end of the woven metal mesh sleeve is connected to a weight which serves to compress the metal sleeve when outside the inner barrel, thereby increasing its diameter to prevent binding or jamming.

摘要翻译： 一种改进的取心装置，其包括设置在钻柱的外部驱动结构内的不可旋转的内筒，其连接到取芯钻头。 编织金属网套筒周向地安装在内筒的外侧并卷绕在其下端。 内筒中的网眼套筒的下端又连接到在取芯操作期间被向上拉的剥离管。 当核心被取芯钻头切割并进入内筒时，编织金属网套筒围绕芯部设置并且在被剥离管向上拉时围绕芯部收缩。 编织金属网套筒的相对端连接到用于在内筒外部压缩金属套筒的重物，从而增加其直径以防止结合或堵塞。