公开(公告)号：US4129771A

公开(公告)日：1978-12-12

申请号：US795641

申请日：1977-05-10

申请人： Jacques Pinettes ,  Jean Chaix

发明人： Jacques Pinettes ,  Jean Chaix

IPC分类号： B23K26/00 ,  B23K9/028 ,  B23K9/038 ,  B23K9/12 ,  B23K9/23 ,  B23K13/00 ,  B23K13/01 ,  B23K15/04 ,  B23K26/08 ,  B23K26/20 ,  B23K31/02 ,  B23K9/02

CPC分类号： B23K31/02 ,  B23K13/00 ,  B23K15/04 ,  B23K26/0823 ,  B23K9/0282 ,  B23K9/23

摘要： The disclosure relates to a method and a device for butt-welding rotational cylindrical metallic rods without filler metal and without forming a rim or deformation in the welded area. The method consists of bringing the two ends coaxially to be welded into contact proximity without compression and applying welding power while simultaneously rotating the two rods in relation to the welding heat source around their common rotational axis to an extent of more than one complete revolution.

摘要翻译： 本公开涉及一种用于对接没有填充金属的旋转圆柱形金属棒并且在焊接区域中不形成边缘或变形的方法和装置。 该方法包括将待焊接的两个端部同轴地接合而不受压缩并施加焊接功率，同时将两个杆相对于焊接热源围绕它们的共同旋转轴线旋转到多于一个整个旋转的程度。

公开(公告)号：US5141057A

公开(公告)日：1992-08-25

申请号：US698209

申请日：1991-05-10

申请人： Jean Chaix

发明人： Jean Chaix

IPC分类号： E21B17/18 ,  E21B33/122 ,  E21B34/10 ,  E21B43/12 ,  E21B43/14 ,  E21B43/28

CPC分类号： E21B17/18 ,  E21B33/122 ,  E21B34/10 ,  E21B43/121 ,  E21B43/14 ,  E21B43/28

摘要： In order to provide safety in a borehole communicating in particular with a cavity washed out from rock salt and containing gas under pressure, the prior art provides devices suffering from the drawback of reducing the flow sections through the tubes in the borehole. The present invention minimizes this section reduction by means of a hollow cylindrical sleeve closed inside by a plug and including ducts formed in its wall in such a manner as to cross over the flows of fluid taking place respectively in a central tube of the borehole and in the annular space between the central tube and a peripheral tube. In one embodiment of the present invention, the sleeve is sandwiched between portions of the central tube and of the peripheral tube, with safety valves advantageously being mounted on the portions of central tube above and below the sleeve. This provides a safety system suitable for implementing the method of the invention by being connected in line with the central tube and the peripheral tube of the borehole. As a result, both the flow established in the central tube and the flow established in the annular space can be stopped in the event of an accident by the valves without the valves significantly reducing the normal flow section of the central tube. When exploiting a well in "dual completion" mode, this structure also provides significantly larger flow sections than provided by prior art tube systems.

摘要翻译： 为了提供特别是与从岩盐中冲洗并在压力下容纳气体的空腔相通的钻孔的安全性，现有技术提供了减少通过钻孔中的管的流动部分的缺点的装置。 本发明通过一个通过塞子在内部封闭的中空圆柱形套筒来最小化该部分的减少，并且包括形成在其壁中的管道，以便分别在钻孔的中心管中交叉流动的流动，并且 中心管和外围管之间的环形空间。 在本发明的一个实施例中，套筒被夹在中心管和周边管的部分之间，安全阀有利地安装在套管上方和下方的中心管的部分上。 这提供了一种适于实现本发明方法的安全系统，其通过与钻孔的中心管和外围管连接。 结果，在没有阀的阀发生事故的情况下，在中心管中建立的流量和建立在环形空间中的流动可以停止，从而显着地减少了中心管的正常流动部分。 当以“双重完井”模式利用井时，该结构还提供比现有技术的管系统提供的明显更大的流动截面。