NEFU-2 Sliding Sleeve

The NEFU-2 Non-Elastomeric Sliding Sleeve is a communication device with a ported inner sleeve that can be opened or closed using a shifting tool by standard slickline or coiled tubing methods. Equalising holes in the inner sleeve provide pressure equalisation between the tubing and casing annulus as the sleeve is opened. The Sliding Sleeve is made up and forms part of the tubing string. The NEFU-2 Sliding Sleeve is a shift-up-to-open tool.

The NEFU-2 Non-Elastomeric Sliding Sleeve uses common machined parts that allow the shift-open direction to be changed from up-to-open to down-to-open by simply substituting different end subs. 

The NEFU-2 Non-Elastomeric Sliding Sleeve is designed for use in high temperature wells to establish a means of communication between the tubing string and casing annulus for single-string or multiple-string completions. The NEFU-2 Sliding Sleeve may be used for directing flow from the casing to tubing in alternate or selective completions. Other applications include well control, spot acidizing and fracturing or equalising pressure between an isolated formation and the tubing string.

Features & Benefits

• Proven non-elastomeric sealing design that is cost effective, reliable and with a long operating life.
• No o-rings or standard chevron style seals used.
• Manufactured standard in 4140 18-22Rc Alloy Steel
• GF Selective Nipple Profile to land slickline tools. (Comparable to Baker Hughes F® Landing Nipple Profile)
• Available for 7,500 psi to 10,000 psi maximum working pressures.