The Sakhalin-1 project. Image courtesy of Rosneft.

Rosneft broke another world record Tuesday after drilling the world’s longest well at the Chayvo field off the coast of Russia’s Sakhalin Island.

The O-14 production well was drilled to a record breaking depth of 44,291 feet with a horizontal reach of 39,478 feet.

The well is part of the Sakhalin-1 project that includes the offshore Chayvo, Odoptu and Arkutun-Dagi fields.

Since the start of drilling at Sakhalin-1 the company has broken nine world records including setting two consecutive records for measured depth in 2013.

Russia’s Rosneft said the extended reach drilling was among the fastest ever thanks to ExxonMobil’s proprietary Fast Drill process.

“This well continues successful implementation of our outstanding project. I would like to express my thanks to our partners – ExxonMobil. Usage of their drilling technologies made this achievement possible,”Rosneft head Igor Sechin said.

The Sakhalin-1 project has produced 80 million tons of oil and 16 billion cubic meters of gas since Rosneft turned on the tap at Chayvo in 2005.

Ultimate recoverable reserves at the project are estimated at 236 million tons of oil and 487 billion cubic meters of gas.

Rosneft holds a 20 percent stake, ExxonMobil holds a 30 percent stake, Sakhalin Oil and Gas Development Co. (SODECO) holds a 30 perncent stake and India-based ONGC Videsh holds a 20 percent stake.



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