The rig is now being dismantled for transportation in October to the Sporshevskoje oil field, approximately 10 km from Nojabrsk, Siberia. This will take approximately six to eight weeks and drilling will begin in March 2003.
The rig has a host of special features to allow it to survive the extreme climate conditions in Western Siberia. The temperature in winter drops to as much as minus 50ºC and in the months of June, July and August the temperature soars to as high as 30ºC, with the crew plagued by mosquitoes.
Commenting at the handover, vice-director for the drilling sector at Sibneft, Vasily Lischuk, said; "By using the KCA DEUTAG rig we expect to be able to drill highly-sophisticated horizontal wells that will generate eight to ten times more production than conventional wells."
KCA DEUTAG plans to drill six wells in this cluster and the wells should open five horizons, with the new wells going to lower horizons than previously achieved and a length of up to five km.
"The extreme winter conditions increase the stress on all equipment," explained Claus Chur, MD of KCA DEUTAG Drilling GmbH, "and the rig needs a special heating system utilizing hot air, steam, and electrically heated shelters operating 24 hours a day. New working procedures are also required to handle the equipment in this condition."
"Horizontal drilling will increase the production per well and make the infrastructure more compact, decreasing the live well costs."
The field is a traditional Russian cluster type, which means big distances between the wells and a central mud and power plant is necessary.
Other key features of the rig include a 8600 HP Genset for supplying power to 3 x 1600 HP mud pumps; a 1000 HP top drive; a 2000 HP draw works; box on box substructure and shaker tank with full wind insulation; and heated fuel tanks and fuel cleaning.
KCA DEUTAG has full responsibility for the drilling rig with camp; personnel; catering; engineering support; drill bit supply; and mobilization to Nojabrsk.
"This is KCA DEUTAG's first step into the Siberian market and there are good possibilities for further rigs to follow," commented Claus Chur.
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