device such as the extreme sur set u00ae locking system however other anchoring mechanisms may be utilized as well the blanking plug device has a lower plug portion that incorporates a screening section the screening section permits flow of fluid through the sidewall of the plug portion while substantially preventing the passage of solid particles application_number US 81966304 A description 0012 fig1 depicts an exemplary blanking plug device 10 that has been constructed in accordance with the present invention the blanking plug device 10 is adapted to be run into a production tubing string not shown or other well conduit on slickline or wireline as such operations are well known in the art they are not described in any detail here the blanking plug device 10 depicted has two separate components a plug 12 and a blanking member specifically prong 14 which is shown removably disposed within the plug 10 in operation the plug 12 is run into the tubing string first and then the prong 14 is run into the tubing string and seated inside the plug 12 the plug 12 has an upper anchoring lock portion 16 the upper end of which is shown at 18 in preferred embodiments the lock portion 16 is a locking device of the type described in u s pat no 4 510 995 preferably the lock portion 16 comprises an extreme sur set u00ae locking system because the structure and operation of this type of lock portion 16 is well known it will only be described briefly herein while in preferred embodiments of the present invention the lock portion 16 is a locking mechanism of the type described in u.