A METHOD OF PLUGGING AND ABANDONING A WELL

• Main Authors: DAHL, ARNT, OLAV, ANDERSEN, PATRICK, STVOLD, ARNOLD, LARSEN, ARNE, GUNNAR, MYHRE, MORTEN, JENSEN, ROY, INGE
• Format: Patent
• Language: English
• Published: 08.08.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

A method of plugging and abandoning a well (1), comprising: (A). lowering a perforation tool (31) into a pipe string (5) onto a longitudinal section (L1); (B). with the perforation tool (31), forming perforations (51) along said longitudinal section (L1); (C). with a flushing tool (33) attached to a work string (3) and lowered onto said longitudinal section (L1), pumping a flushing fluid (35) through the work string (3), out through at least one flushing outlet (331) in the flushing tool (33), into the pipe string (5) and into said annulus (8) via the perforations (51), wherein an outlet axis (b) of said flushing outlet (331) is non-perpendicular to a longitudinal axis (a) of the flushing tool (33); (D). pumping a fluidized plugging material (37) through the work string (3) and into the pipe string (5) at said longitudinal section (L1); (E). placing the fluidized plugging material (37) in the pipe string (5) along at least said longitudinal section (L1), thereby also placing the fluidized plugging material (37) in said annulus (8) via the perforations (51); (F). pulling the work string (3) out of the well (1); and (G). abandoning the well (1). Figure 6