Longest well[s] – Sakhalin-I project
The current world record holder for longest well is located in the Chayvo field, offshore from Sakhalin Island on Russia’s east coast (and just north of Japan).
The consortium drilling program began in 2003 and has set nine world records using extended reach drilling.
In April 2015 the project beat all previous records with the Sakhalin-1 O-14 production well.
Using extended reach technology, the well was drilled to a depth of 44,291 feet with a horizontal reach of 39,478 feet.
It was also drilled in record time using proprietary equipment which allowed “bottleneck identification in the drilling process and solution development to enable optimal drilling and completions.”