Double Compression Set Packer

摘要

A device and method allow a longer sealing element to be used on a packer or other downhole tool while providing an increase in the total amount of setting force that can be used and providing for more uniform or balanced setting of the sealing element. The packer may be first set using internal bore pressure to radially expand one end of the sealing element with a first hydraulic setting mechanism. The packer may then be set a second time using annulus pressure to continue the radial expansion of the sealing element with a second hydraulic setting mechanism.

主权项

1. A packer for a borehole, comprising:
a sealing element for sealing in the borehole, the sealing element disposed on the packer and having first and second ends; a first setting mechanism disposed on the packer adjacent the first end of the sealing element and being hydraulically actuated; and a second setting mechanism disposed on the packer adjacent the second end of the sealing element and being hydraulically actuated; wherein the first and second setting mechanisms sequentially compress against the first and second ends of the sealing element.