The JVS-SET -I Retrievable Production Packer effectively meets several requirements for zone isolation, pumping and production. Full opening gives unrestricted flow and allows the passage of wireline tools and other accessories. A mechanical lock-set action holds substaintial pressure from above or below the packer, whether the packer is left in tension, compression or neutral. A large internal bypass reduces swabbing effect when running and retrieving. The bypass closes upon setting the packer. When releasing, the bypass opens first to equalize pressure before releasing the upper slips. The JVS-SET-I also features the upper slip releasing system that reduces the force required to release the Packer. The Packer has a rotational safety release feature, as well as an optional adjustable straight pull shear safety release. The JVS-SET-I can be set by compression or with tension thus making it ideal for shallow wells or wells requiring the use of fiber glass tubing.