| 摘要 |
A method and an apparatus for connection with a tubing string for use in a wellbore for regulating the flow of a fluid within a wellbore annulus between the tubing string and the wellbore. The apparatus includes a tubing rotator and at least one packer valve for connection with the tubing string, wherein the packer valve is actuatable through rotation of the tubing string by the tubing rotator. Rotation of the tubing string actuates the packer valve between a closed flow position wherein the packer valve substantially seals the wellbore annulus and an open flow position wherein the flow of the fluid is permitted through the wellbore annulus. The method includes the steps of suspending the tubing string in the wellbore by the tubing rotator, connecting the packer valve with the tubing string and rotating the tubing string by the tubing rotator in the first direction to actuate the packer valve to the closed flow position.
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