Plexus Regulatory News (POS)

Plexus Holdings PLC / Index: AIM / Epic: POS / Sector: Oil equipment & services

30 August 2011

Plexus Holdings PLC ('Plexus' or 'the Company')

Extended Contract with Transocean Drilling U.K. Limited

Plexus Holdings PLC, the AIM quoted oil and gas engineering services business and owner of the proprietary POS-GRIP® friction-grip method of wellhead engineering, has signed a further two year frame work agreement with Applied Drilling Technology International ('ADTI'), the turnkey drilling division of Transocean Drilling U.K. Limited, the world's largest offshore drilling contractor, to supply its standard 10,000 psi POS-GRIP wellhead technology. The estimated value of this agreement is £2 million over the next two years, with initial revenues anticipated to commence in Q2 2012 of Plexus' financial year.

This two year frame work agreement is the fourth successive supply contract signed with ADTI and marks an eight year working relationship to date. ADTI will utilise Plexus' POS-GRIP wellhead systems for oil and gas drilling activities in the North Sea region.

Plexus CEO Ben van Bilderbeek said, "We are delighted that ADTI has signed a further frame work agreement with Plexus and has chosen to utilise our POS-GRIP wellhead technology, known for its superior safety, time and cost saving capabilities ahead of strong multi-national competition for the contract. We believe that this acts as testament to the commercial strength of our wellhead technology and we look forward to continuing to work with ADTI in the North Sea market."

**ENDS**

For further information please visit www.posgrip.com or contact:

Notes to Editors:

Plexus Holdings PLC, which began trading on AIM in December 2005, is an oil and gas engineering and services business, which supplies wellhead and mudline suspension equipment for exploration and production applications. Based in Aberdeen, with offices in London, Cairo, Kuala Lumpur and a presence in Houston, Texas, it has developed and patented a friction-grip method of engineering for oil and gas field wellheads and connectors, POS-GRIP®, which involves deforming one tubular member against another to effect gripping and sealing.

The Company plans to accelerate the roll out of POS-GRIP wellhead equipment as a superior alternative to current technology and for it to become the future industry standard for wellhead design. In particular, the technology has advantages in High Pressure/High Temperature (HP/HT) and Extreme HP/HT (X-HP/HT) oil and gas environments, for which there is growing global demand and where Plexus is being increasingly recognised as the supplier of choice. Importantly, the Company is focussed on extending its proprietary technology into an increasing number of subsea applications. In line with this, in March 2011 the Company launched an initiative to develop a new subsea wellhead design, HGSS™, utilising its friction-grip technology in collaboration with key oil and gas operators and service companies. The HGSS subsea wellhead design will include a combination of key features never before seen in a subsea wellhead which include being rated to 15,000 psi, 4,000,000 pounds of 'instant' casing lockdown capacity, annulus pressure monitoring and access for 'bleed off' capability to address sustained casing pressure ('SCP') issues which are recognised by the API as a serious industry problem, and rigid metal annular seal technology qualified to match the performance of premium casing.  Field trials of HGSS are targeted for deployment Q3 2012.

To date, POS-GRIP wellhead systems have been used or selected to be used in over 150 oil and gas wells by international companies including Apache Energy Australia, BHP Billiton, BG International, Bowleven plc, BP, Brunei Shell Petroleum, Cairn Energy, Centrica, ConocoPhillips, Dana Petroleum, Dubai Petroleum, GDF SUEZ, Global Santa Fe, Maersk, Niko Resources, Petro-Canada Trinidad & Tobago, Red Sea Petroleum Operating Company, Repsol, RWE, Senergy Limited, Shell Egypt, StatoilHydro, Silverstone Energy, Talisman Energy, Tullow Oil, and Wintershall.