Rosneft, as part of Sakhalin-1 Consortium, has completed drilling of the “world’s longest well” at the Chayvo field, off the coast of Sakhalin Island.
O-14 production well was drilled with Orlan drilling platform in direction of the field’s south-eastern point. According to Rosneft, 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, the company said. With this accomplishment, Rosneft says that 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.
According to the company, Sakhalin-1 extended reach drilling is among the fastest due to the use of ExxonMobil’s proprietary Fast Drill process. This technology allows bottleneck identification in the drilling process and solution development to enable optimal drilling and completions, Rosneft explained.
Rosneft Head Igor Sechin said: “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.”