Compact & economical retrievable tension-set packer for large bore wells
Features & Benefits
The Evolution ADL-1 Tension Packer (also known as the STP-1L Packer) provides a compact, economical retrievable packer for use where a set-down type packer is impractical due to pressure requirements. Although designed primarily for waterflooding, this packer can also be used for such pressuring operations as formation fracturing in shallow or low-fluid-level wells.
Along with the regular ADL-1, Evolution also offers the AD-1 Packer, a regular bore version of the tool.
To Set Packer
Run the packer to desired setting depth, making the last movement down before attempting actual set. Rotate the tubing to the left one-quarter turn at the tool, and pick-up on the tubing string to obtain pack-off. Refer to chart below for upstrain required to set the various size packers.
Lower the tubing string at least one (1) foot more than is necessary to remove the applied tension (this will move the J-Pin to the top of the J-Slot) and rotate to the right sufficiently to obtain one-quarter turn at the packer..
For use under extreme conditions, two safety release methods are available.
1. The ADL-1 Packer has an emergency Shear Ring installed on the Body, below the Guide. Application of from 25,000 to 50,000 lbs. tension (dependent on strength of Shear Ring) will shear the Shear Ring, permitting the Cone, Packing Element and Guide to drop against the Bottom Sub where they will remain as the Packer is retrieved from the well.
2. If it is not desirable or practical to pull 50,000 lbs. through the tubing, apply approximately 10,000 lbs. strain and rotate the tubing 20 or more turns to the right. This unscrews the left-hand safety thread between the Top Sub and the Body and allows removal of the tubing string and the Top Sub. To remove the remaining portion of the Packer, install a set of Jars made up above an overshot, socket or spear (or the Top Sub), engage the Packer Body and actuate the Jars to free the Packer Body from the casing.
Redress Kits (including such items as packing elements, seal rings, etc.) are available.