A system for sealing a wellbore annulus, comprising: a base pipe having inner and outer radial surfaces and defining an elongate orifice; an opening seat movably arranged within the base pipe and having a setting pin and extending radially from the opening seat and through the elongate orifice, the setting pin being axially translatable within the elongate orifice as the opening seat axially translates In a first direction; a piston movably arranged on the outer radial surface and coupled to the setting pin such that axial translation of the opening seat correspondingly moves the piston, the piston having a piston biasing shoulder; a lower shoe extending about the outer radial surface and having a mandrel biasing shoulder; a packer disposed about the outer radial surface and Interposing the piston and the lower shoe, the packer having a first packer element adjacent the piston and a second packer element adjacent the lower shoe; a ramped collar arranged about the base pipe and Interposing the first and second packer elements, the ramped collar having a first ramp and an opposing second ramp, and a first biasing shoulder and an opposing second biasing shoulder, wherein the first ramp is arranged axially adjacent the first packer element and the second ramp is arranged axially adjacent the second packer element; a wellbore device disposable within the base pipe to engage and move the opening seat In the first direction, wherein, as the opening seat axially translates in the first direction, the first and second packer elements are arranged to compress against the piston and mandrel biasing shoulders, respectively, and the first packer element is arranged to form a first seal in the wellbore annulus and the second packer element is arranged to form a second seal in the wellbore annulus; and wherein the first and second seals define a cavity therebetween, the seals being configured to trap fluid therein and to provide a hydraulic seal. a base pipe having inner and outer radial surfaces and defining an elongate orifice; an opening seat movably arranged within the base pipe and having a setting pin and extending radially from the opening seat and through the elongate orifice, the setting pin being axially translatable within the elongate orifice as the opening seat axially translates In a first direction; a piston movably arranged on the outer radial surface and coupled to the setting pin such that axial translation of the opening seat correspondingly moves the piston, the piston having a piston biasing shoulder; a lower shoe extending about the outer radial surface and having a mandrel biasing shoulder; a packer disposed about the outer radial surface and Interposing the piston and the lower shoe, the packer having a first packer element adjacent the piston and a second packer element adjacent the lower shoe; a ramped collar arranged about the base pipe and Interposing the first and second packer elements, the ramped collar having a first ramp and an opposing second ramp, and a first biasing shoulder and an opposing second biasing shoulder, wherein the first ramp is arranged axially adjacent the first packer element and the second ramp is arranged axially adjacent the second packer element; a wellbore device disposable within the base pipe to engage and move the opening seat In the first direction, wherein, as the opening seat axially translates in the first direction, the first and second packer elements are arranged to compress against the piston and mandrel biasing shoulders, respectively, and the first packer element is arranged to form a first seal in the wellbore annulus and the second packer element is arranged to form a second seal in the wellbore annulus; and wherein the first and second seals define a cavity therebetween, the seals being configured to trap fluid therein and to provide a hydraulic seal.