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Sakhalin-1 Consortium successfully completes drilling of world's longest well


Published Apr 15, 2015
Sakhalin-1 project

Rosneft as part of Sakhalin-1 Consortium has successfully completed drilling of the world's longest well at the Chayvo field.

O-14 production well was drilled with Orlan drilling platform in direction of the field's south-eastern point. The well has the world-record measured depth of 13,500 meters and a horizontal reach of 12,033 meters.

Since the beginning of drilling program in 2003, Sakhalin-1 has set several world records in extended reach well drilling. With this accomplishment, the Sakhalin-1 consortium currently holds drilling records for 9 of the 10 world's longest wells.

In 2013, two consecutive world records for measured depth were set as part of the Sakhalin-1 project. In April of that year, the Z-43 well reached 12,450 meters of measured depth and in June the Z-42 well reached 12,700 meters and a horizontal reach of 11,739 meters. In April 2014, the drilling team drilled and completed Z-40 well at the offshore field Chayvo of the Sakhalin-1 project. Until the completion of O-14 well this well had a record measured depth of 13,000 meters and horizontal reach of 12,130 meters.

Tags: Rosneft




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