METHOD FOR ESTABLISHMENT OF A NEW WELL PATH FROM AN EXISTING WELL

摘要

A method for establishment of a new well path (5) from a well (1), comprising: (A) disposing and anchoring a plug base (23) in a casing (21) in the well (1); (B) lowering a perforation tool (33) into the casing (21); (C) forming holes (213) in the casing along a longitudinal section (L1); (D) pumping a flushing fluid (36) out through outlets (351) in a flushing tool (35) and into the casing (21) and further out into an annulus (7); (E) pumping a fluldized plugging material (37) out through the flushing tool (35) and into the casing (21) and further out into the annulus (7); (F) placing the fluidized plugging material (37) along the longitudinal section (L1) so as to form a plug (25) across a cross section (T1) of the well; wherein the outlets (351) in the flushing tool (35) are angled non-perpendicularly relative to a longitudinal axis of the flushing tool (35); and - wherein the method also comprises: (G) removing a portion of the plug (25) until a cross-sectional section (T3) of the plug (25) remains in the annulus (7); (H) disposing and anchoring a direction-guiding element (27) in the casing (21) within the longitudinal section (L1); (I) by means of the element (27), guiding a drilling tool (31) against the inside of the casing (21); and (J) forming an exit hole (38) through the casing (21) and the cross-sectional section (T3) of the plug (25), thereby allowing a new well path (5) to be formed from the well (1).