The RTTS packer is a full-opening, hook wall packer used for testing, treating, and squeeze cementing operations. In most cases,he tool runs with a circulating valve assembly. The packer body includes a J-slot mechanism, mechanical slips, packer elements, and hydraulic slips. Large, heavy-duty slips in the hydraulic hold down mechanism help prevent the tool from being pumped up the hole. Automatic J-slot sleeves are standard equipment on all packer bodies. Features 1. Full-opening design of the packer mandrel bore allows large volumes of fluid to pump through the tool. 2. Can be set and relocated as many times as necessary with simple tubing manipulation. 3. Tungsten carbide slips provide greater holding ability and improved wear resistance in high-strength casing. 4. Optional integral circulating valve locks into open or closed position during squeezing or treating operations and opens easily to allow circulation above the packer