Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Deep drilling first for Chinese shale gas

Shale gas extraction by the China National Petroleum Corporation is set to get underway by the end of the year with delivery of Herrenknecht Vertical’s first Terra Invader 350 deep drilling rig.

The 1,000t rig has been dispatched from Herrenknecht’s factory in Germany to the production site in Sichuan Province. Once built on site, the modular rig, which has been specially developed to serve the shale gas market, is expected to start production before the end of 2014.

The rig can be raised on four hydraulic cylinders and then skidded, which means that multiple wells can be drilled from a single location - pad drilling - without having to move location.

The technique has been called the XY Stepping System by Herrenknecht, which says this allows the acceleration of the drilling and completion operations, reducing the environmental impact considerably.

According to Herrenknecht, the rig also contains a number of other innovations that will offer substantial time and cost savings over conventional drilling techniques, as well as improving safety. The innovations include automation for the supply of the drill string and casing to the well centre and a central control area that means only four people are needed to operate each shift.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.