| 摘要 |
Method of performing a plug and abandonment operation in a well by the use of a combined perforate and wash tool (1), the tool (1) comprising a perforation tool at a lower end, at least one lower set of sealing arrangement (2) arranged below a fluid displacement arrangement comprising a plurality of radial holes (4), and at least one upper set of sealing arrangement (3) arranged above the plurality of radial holes (4), wherein the method comprises the steps of: a) lowering the tool (1) to the desired location in the well, b) perforating at least a section of the well, if the section is not already perforated c) washing said perforated section (10) by pumping washing and/or cleaning fluid through the radial holes (4) in the displacement arrangement, d) sealing off a lower portion of the well at a location below the perforated section (10) by the use of the at least one lower set of sealing arrangement (2), e) sealing off the well in a lower portion of the perforated section (10) by using the at least one upper set of sealing arrangement (3), f) pumping sealing fluid through the plurality of radial holes (4) in the displacement arrangement, g) lifting the tool (1) through, and above, the perforated section (10), while continuing pumping of the sealing fluid. |
