TST-1 - MECHANICAL PACKER  
                					  
The PARVEEN TST-1 Retrievable Packer is a heavy duty service packer ideally suited for all types of squeeze cementing, formation fracturing, high pressure acidizing, etc. 
It is a large opening compression set packer with hydraulic button-type hold down. It withstands high pressure from above or below and uses a three-element packing system, L-slot, and a drag block mechanism for easy setting. 
The tool features a proven three element packing system and hydraulically controlled balance sleeve designed to keep the by-pass valve closed when set.