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Limits RegistryThe Sakhalin-1 project off Russia's Sakhalin Island, operated by Exxon Neftegas, holds the record for the longest wells ever drilled. Its extended-reach wells from shore reach far out under the sea, and in November 2017 a record well reached 15 km long, beating the project's own earlier records such as the 12,376 m Z-44 Chayvo well of 2012.
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The Sakhalin-1 project off Russia's Sakhalin Island, operated by Exxon Neftegas, holds the record for the longest wells ever drilled. Its extended-reach wells from shore reach far out under the sea, and in November 2017 a record well reached 15 km long, beating the project's own earlier records such as the 12,376 m Z-44 Chayvo well of 2012.
The greatest measured length of any oil or gas well drilled, including extended-reach wells.
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Limits Registry. LR-LONGEST-OIL-WELL. Longest oil well (measured depth). 2026.