The Benoit® Sliding Sleeve (BSS™) is a premium flow control valve, designed to offer dependable service in a wide range of applications. The BSS™ consists of a ported outer housing with packing stacks adjacent to the ports, and a slotted inner sleeve. When the inner sleeve is shifted such that inner and outer ports are aligned, communication between the tubing and casing annulus is achieved. When the inner sleeve is shifted to the closed position, the inner ports are isolated from the outer ports by the packing stack, and the tubing and casing annulus are isolated from each other.
The Benoit® Sliding Sleeve has a Landing Nipple profile in the Top Sub, and polished bore in the Bottom Sub, thus allowing the installation of other flow control devices as required.
The BSS™ can be configured to shift up to open (BSS-U™), or down to open (BSS-D™), utilizing the same parts. Either orientation can also be configured with a Standard (POS 2) inner sleeve, for use with an industry standard shifting tool, or with a Selective (POS 1) inner sleeve, shifted with a Selective 1 shifting tool. The Standard shifting tool will shift both the Standard & Selective sleeves, while the Selective shifting tool will shift only the Selective sleeve. This sliding sleeve can be shifted thru use of standard wireline techniques, or by coiled tubing.
Sliding sleeves can be used in multiple applications, including:
PACKOFF TOOL - The Packoff Tool is used in the event that a sleeve cannot be fully closed. The tool contains two sets of packing at each end of a hollow tube. The packing sets in the seal bore of the Top Sub & Bottom Sub, effectively sealing the body ports of the sliding sleeve and allowing flow from below the sliding sleeve to pass through the Packoff Tool and the Lock Mandrel. It is run on a standard industry lock mandrel which holds the Packoff Tool in place.
SEPARATION TOOL - The Separation tool is used to seal off the tubing below the sliding sleeve, while allowing flow through the body ports to the tubing. It is run on a lock mandrel which holds the Separation Tool in place.
SHIFT CONFIRMATION TOOL - The Shift Confirmation Tool is used to assure that the sliding sleeve has been fully shifted. the SCT-U confirmes the sliding sleeve is shifted completely up, and the SCT-D confirms that the sliding sleeve is shifted completely down. Both tools are run on a lock mandrel, with a tattletale connected to the Running Tool. If the tattletale comes up with the running tool when the running tool is pulled out of the well, the test is positive and the sleeve is shifted completely. If the tattletale does not come up with the running tool, the test is negative and the sleeve is not shifted completely.