ENSCO 120 Ultra-Premium Harsh Environment Jackup Rig Contracted to Nexen

11/14/2011

LONDON--(BUSINESS WIRE)-- Ensco plc (NYSE: ESV), as previously reported, has entered into a drilling contract for ENSCO 120, an ultra-premium harsh environment jackup rig. The initial contract is with Nexen Petroleum for their Golden Eagle Development in the Central North Sea for 10 wells with an estimated initial contract value of approximately $120 million. Contract commencement is scheduled for fourth quarter 2013 following systems integration testing and mobilization. Nexen may extend the term through 11 one-well options that would increase the contract value by an estimated $140 million.

Chairman, President and Chief Executive Officer Dan Rabun commented, “We are very pleased that Nexen has contracted ENSCO 120, which is scheduled for delivery in second quarter 2013. Nexen will receive unmatched value and increased drilling efficiencies from this extremely capable and versatile rig, as well as Ensco’s expertise and experience operating in the North Sea.”

The ENSCO 120 series of jackup rigs (ENSCO 120, ENSCO 121 and ENSCO 122) is being constructed at Keppel FELS shipyard in Singapore. The new jackup rigs will be enhanced versions of the KFELS Super A design capable of operating in water depths up to 400'. The unique design features significantly increase Ensco’s capability to provide high specification, harsh environment jackups across the North Sea.

With high-temperature, high-pressure equipment, a proprietary Ensco high-capacity design cantilever envelope, 2.5 million pound quad derrick, automated hands-free offline pipe handling systems, ultra-high capacity jacking and fixation systems, 150-person quarters and strict noise and ergonomic standards, these rigs feature equipment and capabilities previously found only in the largest ultra-harsh environment jackup fleet and set a new standard in the harsh environment category. These extremely capable and versatile rigs offer customers unprecedented value through increased drilling efficiencies for the most demanding large multi-well platform programs, ultra-deep gas programs and ultra-long reach wells up to 40,000' total drilling depth in oil and gas regions throughout the world.

ENSCO 121 and ENSCO 122 are scheduled for delivery in fourth quarter 2013 and third quarter 2014, respectively.

Ensco uses its website to disclose material and non-material information to investors, customers, employees and others interested in the Company. To receive regular updates on Ensco news or SEC filings, please sign-up for Email Alerts on the Company’s website.

Ensco plc (NYSE: ESV) brings energy to the world as a global provider of offshore drilling services to the petroleum industry. We have the world’s second largest offshore drilling fleet comprised of dynamically-positioned drillships and semisubmersibles, moored semisubmersibles and premium jackups. Ensco is ranked #1 for overall customer satisfaction in the leading independent survey conducted by EnergyPoint Research with #1 ratings in 14 of 16 separate categories. To learn more about Ensco, please visit our website at www.enscoplc.com. Ensco plc is an English limited company (England No. 7023598) with its registered office and corporate headquarters located at 6 Chesterfield Gardens, London W1J 5BQ.

Statements contained in this news release that state Company or management intentions, hopes, beliefs, anticipations, expectations or predictions of future events are forward-looking statements. Such forward-looking statements include references to the expected delivery dates of ENSCO 120, ENSCO 121 and ENSCO 122, mobilization, revenue, commencement and term of the ENSCO 120 contract with Nexen Petroleum.

It is important to note that the Company's actual results could differ materially from those projected in such forward-looking statements. The factors that could cause actual results to differ materially from those in the forward-looking statements include the following: (i) changes or delays in the anticipated rig construction, sea trials, mobilization and commencement, (ii) changes in the actual drilling contract revenues or term, (iii) renegotiation, cancellation, or breach of contracts, (iv) shipyard risks, (v) force majeure events, and (vi) the operational and other risks described from time to time in the Company's SEC filings. Copies of such SEC filings may be obtained at no charge by contacting our Investor Relations Department at 713-917-2112 or by referring to the Investor Relations section of our website at www.enscoplc.com.

The Company disclaims any obligation or undertaking to disseminate any updates or revisions to any forward-looking statements to reflect any change in Company or management expectations or any change in events, conditions or circumstances on which any such statements are based.

Source: Ensco plc