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Wednesday 1 April 2015  

Sakhalin-1 Drilling Program Sets Extended Reach Drilling Record

- The O-14 well sets a new mark with a measured depth of 13,500 meters and a horizontal each of 12,033 meters

Yuzhno-Sakhalinsk, Russia – Exxon Neftegas Limited, on behalf of the Sakhalin-1 consortium, today announced the completion of the O-14 well at the Chayvo offshore field, achieving a new world-record measured depth of 13,500 meters and a horizontal reach of 12,033 meters.

The well was completed in 156 days with ExxonMobil proprietary technology which allows for optimal drilling and completion performance.With this accomplishment, the Sakhalin-1 consortium currently holds drilling records for 9 of the 10 world’s longest wells.

“We are proud that Sakhalin-1 continues to prove its leadership by achieving these records in a challenging environment while maintaining the highest precision in a safe and environmentally responsible manner,” said Wayne Warwick, executive vice president of Exxon Neftegas Limited.

In 2013, the Exxon Neftegas Limited drilling team set two consecutive world records for measured depth at the Chayvo field. In April of that year, the Z-43 well reached 12,450 meters of measured depth and in June the Z-42 well reached a measured depth of 12,700 meters and a horizontal reach of 11,739 meters.

In April 2014, the Z-40 well was completed and held the most recent world record, with a measured depth of 13,000 meters and horizontal reach of 12,130 meters.

Sakhalin-1 extended reach drilling success is made possible by utilizing several ExxonMobil proprietary technologies to drill and complete wells. ExxonMobil’s proprietary Fast Drill process identifies limiters in the drilling process and designs solutions to enable optimal drilling, while patented technologies enable optimum completions.

Successful implementation of these state-of-the-art technologies protect the environment by reducing the footprint involved in drilling and production operations. They also reduce costs associated with additional offshore facilities, pipelines and other production infrastructure.

Notes to editors:

The Sakhalin-1 Project is being implemented by an international consortium which includes the Japanese consortium SODECO (30 percent); affiliates of the Russian state company Rosneft – RN-Astra (8.5 percent) and Sakhalinmorneftegas-Shelf (11.5 percent); the Indian state oil company, ONGC Videsh Ltd., (20 percent); and Exxon Neftegas Limited (30 percent), a subsidiary of Exxon Mobil Corporation and the Sakhalin-1 project operator.

Sakhalin-1 includes three oil and gas blocks - Chayvo, Odoptu, and Arkutun Dagi - located off the northeast coast of Sakhalin Island in the Russian Far East. More detailed information on the Sakhalin-1 Project can be found on