Patent ID: 9004163
Filing Date: 2015-04-14
Classification: C09K,E21B

Abstract:
1. Equipment for drilling and reinforcing a borehole of a well comprising: a drill pipe string comprising a drill tool at a lowermost end of the drill pipe string; a drilling fluid circulation means for circulating drilling fluid through the drill pipe string and the drill tool to an annulus between the drill pipe string and the borehole; a downhole treatment device held on the drill pipe string for applying a liner of polymer material at a surface of the borehole, wherein, the drilling fluid circulated through the annulus is a fluid system containing fusible and/or curable polymer material dissolved and/or emulsified and/or dispersed therein and the treatment device is adapted to concentrate energy for fusing and/or curing the polymer material contained in the drilling fluid in a limited space in the vicinity of the surface of the borehole.