| 主权项 |
1. A method of operating a well bore, the method comprising:
providing a screen assembly for removing particulates from a fluid in a well bore, the well bore being provided with a fluid transport tubing for transport of fluids inside the fluid transport tubing, the fluid transport tubing being provided with sliding sleeve door apertures through which the fluid flows from the well bore external the fluid transport tubing and into the fluid transport tubing, wherein the screen assembly comprises:
a supportive tube having apertures allowing well bore fluids to pass;a filter made from a ceramic material arranged outside the fluid transport tubing and covering a section of the fluid transport tubing having the sliding sleeve door apertures, such that the filter prevents particles above a predefined size from entering through the sliding sleeve door apertures, the filter further arranged on the inside of the supportive tube, such that the filter is placed between the supportive tube and the section of the fluid transport tubing having the sliding sleeve door apertures so that the filter and the fluid transport tubing define an annular space between an inside surface of the filter that faces a center axis of the fluid transport tubing and an outside surface of the section of the fluid transport tubing having the sliding sleeve door apertures that faces the inside surface of the filter, the annular space extending between axial ends of the filter, wherein the annular space is free of obstructions; and cleaning the ceramic filter material by application of a solution comprising an acid suitable for cleaning the screen assembly. |
