Messoyakhaneftegaz completes construction of a highly complex production well at its Vostochno-Messoyakhskoye field

21 December 2017

Messoyakhaneftegaz, the Gazprom Neft—Rosneft joint venture, has completed construction of a unique and highly complex production well — a horizontal well with two pilot (“rathole”) and two lateral wells, drilled using “fishbone” technology — at its Vostochno-Messoyakhskoye field.*

At a depth of 825 metres, the horizontal deviation from the main well equals 2,001 metres. The Drilling Complexity Index on this well (at 7.03), and the ratio between the horizontal offset and the vertical depth of the pilot borehole (at 3.06) make this well genuinely unique. This construction has made it possible to increase coverage of oil-bearing sections of productive strata, which are characterised by a complex geological structure. Initial flow rate at this high-technology well is running at 94 tonnes of oil per day.

The complex geology of the Messoyakha licence areas does not allow a uniform approach to be taken in developing hard-to-recover reserves, with non-standard enhanced oil recovery (EOR) techniques proving more effective here, together with cutting-edge drilling technology and geological prospecting. Implementation of the Messoyakha project has allowed the participating companies to enhance their skills and competencies in applying high-technology solutions to developing hard-to-recover reserves.

A total 130 wells have been built at the Vostochno-Messoyakhskoye field since the start of 2017, nine of which utilise “fishbone” technology. Construction of a further 44 high-complexity wells is planned at the northernmost onshore field under development in 2018, using multi-hole completion technology.