Rosneft Expects to Increase Production at Verkhnyaya Chonya
Verkhnechonskneftegaz (VCHNG, part of Rosneft) has begun full-scale development of the Preobrazhensky horizon at the Verkhnechonskoye oil and gas condensate field in the Irkutsk region, Rosneft said in a statement.
The project implies that “additional production at the field will amount to 4 million tons of oil through drilling and reconstruction of more than 200 wells.”
“The company’s specialists selected the most effective well construction technology – drilling with horizontal penetration through a productive formation of at least 1000 meters and subsequent nine-stage hydraulic fracturing (fracturing). A total of 10 such wells were put into operation, the flow rate of which turned out to be at a consistently high level for low-permeability formations – an average of 49 tons of oil per day,” the press release says.
The Preobrazhensky horizon is located at a depth of 1.6 thousand meters above the Verkhnechonsky horizon, which is the main development object of Verkhnechonskneftegaz. It is represented by a carbonate reservoir and is characterized by extremely low permeability of the formation. Initial recoverable reserves amount to more than 28 million tons of oil.
As the company clarifies, the oil-bearing area of the Preobrazhensky horizon extends far beyond the Verkhnechonskoye field to the territory of several license areas in the Irkutsk region.
Verkhnechonskoye oil and gas condensate field (Irkutsk region, operator – Verkhnechonskneftegaz) is part of the Danilovsky cluster of Rosneft. The cluster unites the Severo-Danilovskoye, Yuzhno-Danilovskoye, Verkhneicherskoye fields and the field named after. Lisovsky. Their total recoverable reserves of oil and gas condensate in categories C1+C2 amount to 320 million tons.
VCHNG production, according to the Central Control Department of the Fuel and Energy Complex, in 2021 amounted to 6.712 million tons of oil and 1.24 billion cubic meters of gas.
