Abstract: Blowout preventer (BOP) systems and methods for providing additional redundancy and reliability are provided. A BOP system for providing additional redundancy can include a first set of components including a BOP control pod with a primary regulator and a secondary regulator, where the primary regulator and the secondary regulator are arranged in a parallel configuration; a hydraulic supply line in communication with the BOP control pod; a pod select valve in communication with the primary regulator and the secondary regulator; and a bypassable hydraulic regulator in communication with the pod select valve; and a second set of components, the bypassable hydraulic regulator disposed between the pod select valve and the second set of components, where a hydraulic regulator bypass line bypasses the bypassable hydraulic regulator between the pod select valve and the second set of components.

Abstract: Blowout preventer (BOP) systems and methods for providing additional redundancy and reliability are provided. A BOP system for providing additional redundancy can include a first set of components including a BOP control pod with a primary regulator and a secondary regulator, where the primary regulator and the secondary regulator are arranged in a parallel configuration; a hydraulic supply line in communication with the BOP control pod; a pod select valve in communication with the primary regulator and the secondary regulator; and a bypassable hydraulic regulator in communication with the pod select valve; and a second set of components, the bypassable hydraulic regulator disposed between the pod select valve and the second set of components, where a hydraulic regulator bypass line bypasses the bypassable hydraulic regulator between the pod select valve and the second set of components.

Abstract: A variable bore packer used in a blowout preventer to form a seal against different diameter tubular members for oil and gas drilling operations. The variable bore packer includes a packer member molded of elastomeric material with certain mechanical properties and including an inside curved surface. The packer also includes a plurality of packer inserts molded within the packer member to form an insert array. Additionally, the packer includes a protrusion extending from and bonded to the packer member inside curved surface, the protrusion including increased mechanical properties compared to the packer member. The packer member, the insert array, and the protrusion are molded into a unitary structure and sized to form a seal against the different diameter tubular members upon closure of the blowout preventer. Also, the insert array and the protrusion diminishing extrusion of the elastomeric material between the packer inserts and the tubular members.

Abstract: A variable bore packer used in a blowout preventer to form a seal against different diameter tubular members for oil and gas drilling operations. The variable bore packer includes a packer member molded of elastomeric material with certain mechanical properties and including an inside curved surface. The packer also includes a plurality of packer inserts molded within the packer member to form an insert array. Additionally, the packer includes a protrusion extending from and bonded to the packer member inside curved surface, the protrusion including increased mechanical properties compared to the packer member. The packer member, the insert array, and the protrusion are molded into a unitary structure and sized to form a seal against the different diameter tubular members upon closure of the blowout preventer. Also, the insert array and the protrusion diminishing extrusion of the elastomeric material between the packer inserts and the tubular members.