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Exxon’s Sakhalin-1 extended-reach record
Exxon Mobil Corp. said Jan. 28 that subsidiary Exxon Neftegas Ltd. has set a record for extended-reach drilling at the Odoptu field, offshore Sakhalin Island in the Russian Far East.
The Odoptu OP-11 well reached a total measured depth of 40,502 feet, 7.67 miles, to set a world record for extended-reach drilling, Exxon said. The well also set a world record with a horizontal reach of 37,648 feet, 7.13 miles.
Exxon said the well was completed in 60 days using ExxonMobil’s fast drill process and integrated hole quality technology to maximize performance in every foot of hole drilled.
Odoptu, one of three Sakhalin-1 project fields, is five to seven miles offshore northeast of Sakhalin Island. The extended-reach drilling process enables drilling offshore beneath the seafloor from an onshore drilling site.
Six world records ExxonMobil said that since the first Sakhalin-1 well was drilled in 2003, six of the world’s 10 record-setting extended-reach wells have been drilled at the project. The specially designed Yastreb rig, used throughout, has set multiple industry records for measured depth, rate of penetration and directional drilling.
Since startup, Sakhalin-1 has produced some 300 million barrels of oil for export and has supplied approximately 235 billion cubic feet of associated natural gas to customers in Khabarovsk Krai, in far eastern Russia, for home heating and to meet growing energy needs.
Sakhalin-1 includes the Chayvo, Odoptu and Arkutun Dagi oil and gas fields off the northeast corner of Sakhalin Island. Potential recoverable resources include 2.3 billion barrels of oil and 17.1 trillion cubic feet of natural gas.
Exxon Neftegas operates the Sakhalin-1 project on behalf of a consortium that includes affiliates of the Russian state company Rosneft RN-Astra and Sakhalinmorneftegas-Shelf, the Japanese corporation Sodeco and the Indian state oil company ONGC Videsh Ltd.
—Petroleum News
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