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Bolshekhetskaya Depression (Northern part of West Siberia)

Bolshekhetskaya
Depression

The Bolshekhetskaya Depression fields are the Company’s key gas producing assets in Russia. LUKOIL’s largest gas field is Nakhodkinskoye, which was put on stream in 2005. Oil production at the Pyakyakhinskoye field commenced in 2016, and its gas production infrastructure with a plateau annual production level of 5 billion cubic meters was launched in 2017. The Company is also planning to develop the Yuzhno-Messoyakhskoye and Khalmerpayutinskoye fields of the Bolshekhetskaya Depression.

Pyakyakhinskoye field is the Group’s second field put on stream in Bolshekhetskaya Depression. The average daily flow rates of the gas and oil wells at the field are over 300 thousand cubic meters and approximately 70 tonnes, respectively, which is two times higher than the average company-wide flow rates of the new wells.

The Pyakyakhinskoye field’s oil production infrastructure includes a metering station, a field support base, a pumping station to maintain reservoir pressure, an oil treatment unit, and a petroleum gas compressor station. The field’s major gas producing facility is a complex gas treatment unit.

Pyakyakhinskoye field has a challenging geology complicated by gas caps and oil rims; therefore its core assets are developed through the horizontal drilling, including drilling of multilateral wells. The unique for Russia oil reservoir development method of using both multilateral production wells and horizontal injection wells is protected by the patent.

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