公开(公告)号：EP3087244A2

公开(公告)日：2016-11-02

申请号：EP14809110.1

申请日：2014-10-22

申请人： Centrum Badan Kosmicznych Polskiej Akademii Nauk ,  Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie

发明人： SEWERYN, Karol ,  GRASSMANN, Kamil ,  KUCINSKI, Tomasz ,  BURATOWSKI, Tomasz ,  UHL, Tadeusz ,  ZWIERZYNSKI, Adam Jan ,  TEPER, Wojciech ,  BEDNARZ, Stanislaw ,  GONET, Andrzej ,  RZYCZNIAK, Miroslaw ,  ZLOTKOWSKI, Albert

IPC分类号： E21B7/20

CPC分类号： E21B19/22 ,  E21B7/20 ,  E21B17/20 ,  E21B25/00

摘要： The object of the invention is a spragging mechanism for application in a tube. It is provided with a band and clamping means. The clamping means are arranged within the tube, outside of which the band is provided. The object of the invention is also a system for guiding bore head, provided with an spragging mechanism, head, means transferring the pressing force to the bore head, and also a curled tube fed from the drum into the wellbore. The curled tube (1) constitutes means transferring the pressing force, exerted by the pressing mechanism (2) via a mechanism releasably connected to the curled tube (1). The object of the invention is also a method of drilling a wellbore, wherein a bore head with an drill bit is lowered down the wellbore and pressed against its bottom, simultaneously inserting a tube into to wellbore. For pressing the head (9) with the drill bit (8) a tube (1) curled of strip (T1) drawn from a drum is used, wherein the pressing force is applied to the tube via a mechanism (11, 13, 2) releasably connected thereto.