Schlumberger

Seating & Landing Nipples

Overview Library

Provide a reduced ID and polished bore to anchor and seal a flow control device in the tubing

Landing and seating nipples are no-go devices with a reduced bore smaller than the tubing ID. They prevent flow control tools from passing through and are available for both single and dual completions.

Without locks

For certain applications no locking device is required, such as in setting a hydraulic packer with an equalizing standing valve. In such cases, a nipple with a top no-go shoulder on the uppermost end and a polished bore is used. The standing valve shoulders against the reduced ID of the packing bore and seals in the polished section.

With locks

Nipples with a range of sizes, thread connections, metallurgies, and pressure ratings are available for landing, locking, and sealing locks with attached flow control devices in the production tubing. The internal profile of these nipples includes a shoulder that engages the no-go of the appropriate lock, a locking recess, and a polished bore.

The lock and flow control device are lowered into the tubing using slickline until the no-go of the lock contacts the no-go shoulder in the nipple.  Jarring causes the locking dogs to move out into the locking recess, anchoring the assembly; the lock packing seals in the nipple's polished bore. Multiple bore sizes are available for stacked, multiple-nipple applications.

The CAMX landing nipple has a selective profile instead of a simple shoulder. Any number of these nipples can be run in the completion string. The running tool will locate and lock the attached locking mandrel (with appropriate flow control device) in the nipple of choice.

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