Messoyakhaneftegaz, a joint venture of Rosneft and Gazprom-Neft, has begun full-scale development of geologically complex Lower Cretaceous Achimov deposits in Vostochno-Messoyakhskoye oil and gas field in West Siberia.
A horizontal well with total length of 3,200 m flowed naturally at an initial rate of 435 tonnes/day, eight times the average of other wells in the field, the companies said.
They plan two exploratory wells and continued geophysical studies of Achimov strata, which have abnormal reservoir pressures and high GORs.
The Messoyakha group of fields includes the Vostochno (Eastern) and Zapando (Western) Messoyakhskoye blocks on the Gydan Peninsula in the Tazovsky district of the Yamalo-Nenets Autonomous Okrug. Production totaled 4.5 million tonnes of oil in 2018.
Messoyakhaneftegaz holds licenses to both blocks. Gazprom-Neft is operator.
