Drilling progress and technological improvement of ultradeep wells in Russia

In Russia, there are abundant oil and gas resources and the drilling of ultradeep wells starts earlier. In this paper, the drilling summary of key ultradeep wells in the period of former Soviet Union was investigated, and the drilling target, drilling process and technological achievement of Kola ultradeep well were analyzed. Then, the progress of Sakhalin-1 project was tracked, and oilfield distribution, development progress, drilling status of ultradeep wells and application of new drilling technologies were described. It is indicated that the progress of Russia’s ultradeep well drilling technologies provides valuable reference for our drilling technologies, while Russia’s drilling technologies have some weaknesses, which provides the opportunity for our drilling technologies to enter Russian market. We shall strengthen introducing the Russia’s ultradeep well drilling technologies, provide Russia with petroleum engineering technology service and participate in Russia’s oilfield development, so as to promote the development of our ultradeep well drilling technologies.