| 摘要 |
The equipment for drilling and reinforcing a borehole (1) of a well comprises a drill pipe string (5) carrying a drill tool (7) at its lowermost end and a downhole treatment device (19) held on the drill pipe string (5) for applying a liner (17) of polymer material at the surface of the borehole (1). The polymer material is a fusible and/or curable material dissolved and/or emulsified and/or dispersed in drilling fluid (9) or mud circulated through the drill pipe string (5) and an an-nulus between the drill pipe string (5) and the wall (15) of the borehole (1). The treatment device (19) is adapted to concentrate energy for fusing and/or curing the polymer material contained in the drilling fluid (9) in a limited space (25) at the vicinity of the wall (15) of the borehole (1). The treatment device (19) thus focuses its energy in the vicinity of the wall (15) and allows a continu-ous reinforcing of the borehole (1) simultaneously while drilling. |
