(function (w, d, s, l, i) { w[l] = w[l] || []; w[l].push({ 'gtm.start': new Date().getTime(), event: 'gtm.js' }); var f = d.getElementsByTagName(s)[0], j = d.createElement(s), dl = l != 'dataLayer' ? '&l=' + l : ''; j.async = true; j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window, document, 'script', 'dataLayer', 'GTM-WW3Q98L');

Tieback Stem

Install new casing strings to cover abrasive wear or protect a weak casing string against shut-off or extreme production pressure

Have a question? Contact us.
  • Description Description
  • Resources Resources
Description

Our tieback stem provides the possibility to install a new casing string to cover abrasive wear caused by drilling or corrosion or to protect a weak casing string against shut-off or extreme production pressure. Additionally, it can also be used to isolate a leaking liner.  

A typical tieback liner system includes a tieback string with a tie back stem below, which is inserted in an existing polished bore receptacle. 

Features and benefits

  • Mule shoe configuration supports stabbing and facilitates reentry with well intervention tools 
  • Available from 6 to 30 ft 
  • High-pressure, high-temperature (HP/HT) seals 
  • Flow optimized gage and shear ring to protect the seal stack during installation 

Applications

  • Tieback strings to surface 
  • Cemented tieback string 
  • Scab liners 
  • Tieback packer runs with liner-top packer 

Materials

  • L80, T95, P110, Q125, 22Cr 125ksi 
  • Other materials on request 
Resources
  • Longest and Heaviest Geothermal Liner Hanger Installation Case Study
  • Successful Germany Geothermal Liner System Installations Case Study

Related Products

GSL Liner Hanger

Designed for tight clearance, our GSL liner hanger assists you in hanging an intermediate liner.
Contact Us

© 2023 NOV Inc. All Rights Reserved.

This website would like to use cookies to store information on your computer which will help to customize your interactions with us and provide you with a better browser experience. You may delete and block cookies from this site, but parts of the site may not function as a result. More information about cookies and your choice can be found in our Privacy Policy. To accept cookies from this site, please click the ‘I Accept’ button below.