VAM BOLT-II Selected by LUKOIL for Caspian Sea Well
LUKOIL Nizhnevolzhskneft has chosen Vallourec to deliver its VAM BOLT-II solution with a large 18 inches outer diameter for the Caspian Sea Khazri-2
LUKOIL Nizhnevolzhskneft has chosen Vallourec to deliver its VAM BOLT-II solution with a large 18 inches outer diameter for the Caspian Sea Khazri-2 well. Its high performance levels were proven when the connection was successfully deployed with zero reject on a Neptune jack up drilling rig. This is the first time VAM BOLT-II ran on this diameter range. The most recent design-improved generation of VAM flush connections gives higher torque capacity and outstanding performance. Vallourec supplied LUKOIL with 5 casing strings and 345 tons of VAM BOLT-II as well as accessories such as lifting and handling circulation head. The VAM BOLT-II solution has a double-start thread design and make up is quick and easy, it saves platform installation time and make for perfect connection to large bore subsea well heads.
LUKOIL has been especially technically demanding, as the nearest gas formation was at approximately 12,500 feet and the planned setting depth was roughly 6,000 feet. Consequently, the customer specified an outer diameter constraint because of the blowout preventer size of almost 19 inches and a liquid tight shouldered connection with an OD of 18 inches and wall thickness of 0.64 inches with a maximum make-up torque not exceeding 109.9 klb per ft.
LUKOIL Nizhnevolzhskneft is a wholly owned subsidiary of LUKOIL and specializes in oil and gas field development and production in the Caspian and Azov Seas. Since its foundation in 1995, one of the company’s priorities has been to implement the Caspian project, the search for and future development of hydrocarbon deposits in this Sea. These deposits are some of the most complex to get at. The company is now developing Khazri-2, the successor to the 2017 Khazri-1. This offshore exploratory well has one of the most complicated designs in Russia owing to high pressure hydrogen sulfide. Successful implementation of Khazri-2 is extraordinarily vital as it will prime further developments of this Caspian oil field. For example, the Titonskaya-1 well is set for 2021 development with an almost similar design.