| 摘要 |
A washing assembly having at least one nozzle in fluid communication with at least one fluid source. The at least one nozzle is angled slightly inwards and downwards towards the internal bore of the washing assembly. The washing assembly is placed in functional relation to a wellbore. The tubular within the wellbore is passed along the washing assembly and through pressurized fluid supplied thereby, whereby NORM and other materials are washed from the tubular down into the wellbore. Further, the methods disclosed include use of the disclosed washing assembly or other washing assemblies used for the purpose of removing material from downhole tubular and like materials. The washing assembly is positioned within a wellbore such that it is sufficiently retained therein. A fluid source is coupled to the washing assembly to provide pressurized fluid thereto. The fluid provided may be augmented with cleaners or other chemicals to aid in the removal of the NORM and/or other material contained on the tubulars, and/or to aid in neutralizing the NORM. The pressurized fluid is introduced into the wellbore and the tubular is extracted through the exerted fluid. The NORM and other material is washed down into the borehole. One or more washing assemblies may be positioned along the length of the wellbore as needed.
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