| CPC E21B 43/38 (2013.01) [E21B 17/18 (2013.01); E21B 43/10 (2013.01); E21B 43/128 (2013.01); E21B 27/005 (2013.01); E21B 33/12 (2013.01)] | 14 Claims |

|
1. A blanking plug having an upper end and a downhole end comprising:
a flow isolation mechanism at the downhole end of the blanking plug;
at least one positioning structure for positioning the blanking plug in a tubing string of a well;
at least one locking device for holding the blanking plug at a first working position in the tubing string; and
a sand trap positioned at the upper end of the blanking plug, the sand trap comprising a particulate accumulation chamber and a filter in a wall of the chamber,
wherein the blanking plug and the sand trap are configured to be run-in and retrieved from the well without being separated.
|