Abstract: A hydraulic actuator device to activate multiple completion accessories in an oil, gas or other subterranean well from a single hydraulic control line running from the surface, through the wellhead, and down through the well. The hydraulic actuator device is mounted in the control line and selectively diverts flow between a through bore and a conduit in a spur. An embodiment of using the device to activate a chemical injection valve and after installing a lift system with activation of a hydrostatic drain valve to provide the head of fluid, using the device to activate a hydraulic drain valve.

Abstract: A packer for anchoring and sealing to a tubular in a well, the packer including a packer element, an anchoring arrangement, a setting mechanism and a release mechanism. The release mechanism holds a thin-walled section of tubing in the packer in tension using a biasing mechanism. On severing the tubing, the bias releases an engagement mechanism which allows the anchor arrangement and the packing element to move relative to the body and thereby unset the packer. An embodiment of a dual bore packer is described. A method of well isolation is described, with an assembly including the dual bore packer. The primary bore forms the short string and a secondary bore forms the long string. By severing the short string the integrity of the long string is maintained to pull lower devices on the long string and the short string does not require tension below the packer to release.

Abstract: A packer for anchoring and sealing to a tubular in a well, the packer including a packer element, an anchoring arrangement, a setting mechanism and a release mechanism. The release mechanism holds a thin-walled section of tubing in the packer in tension using a biasing mechanism. On severing the tubing, the bias releases an engagement mechanism which allows the anchor arrangement and the packing element to move relative to the body and thereby unset the packer. An embodiment of a dual bore packer is described. A method of well isolation is described, with an assembly including the dual bore packer. The primary bore forms the short string and a secondary bore forms the long string. By severing the short string the integrity of the long string is maintained to pull lower devices on the long string and the short string does not require tension below the packer to release.