| http://www.w3.org/ns/prov#value | - In a further aspect of the present invention there is a provided a method of sealing the wall of a wellbore as it is being drilled through a subterranean formation using a drill string having a drill bit on the lower end thereof which method comprises fitting the device of the present invention comprising the receptacle, the gathered pack of tubing and the radially expandable locking means to the
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