Method and system for sealing a wellbore

摘要

Systems and methods for sealing a wellbore are provided. The wellbore has a pipe therein for the passage of fluid therethrough. The system is provided with a BOP positionable about the pipe and at least one seal assembly positionable about the BOP. Each of the seal assemblies has a plurality of blocks positionable within the BOP, at least one actuator for selectively moving the blocks to a contact position surrounding the pipe, and a plurality of pipe seals carried by the blocks for creating a seal about the pipe of the wellbore. Each block has an opening extending into a cavity therein. Each pipe seal is positionable in one of the cavities and flowable through the opening thereof as the blocks are moved into the contact position whereby at least a portion of a pressure applied to the pipe seals is released from the blocks.