Thru-Tubing Inflatable Permanent Bridge Plug The Thru-Tubing Permanent Bridge Plug (TTPBP) is a non-retrievable inflatable bridge plug used to permanently plug the casing below the production tubing. Applications include: permanent shutoff of lower gas zone, shutoff of a watered-out zone, and well abandonment. Thru-Tubing Inflatable Permanent Bridge Plug Body OD [inch] Element OD [inch] Specification Length with Running Tool [inch] Length without Running Tool [inch] Fishing Neck Size and Type Guide Ring OD [inch] Min. Restriction to Pass Through [inch] 1.690 1.690 123 98 - 1.753 1.859 2.125 2.125 123 98 1.37 OD External 2.188 2.338 2.500 2.563 2.750 2.750 2.813 3.025 3.000 3.000 125 100 2.5 OD External 3.063 3.300 3.375 3.438 3.713